Bad file system performance in OS X Mavericks
After installing OS X Mavericks I experience bad file system performance approx. three times per day: Opening Finder and trying to a access a directory gets my MacBook Air (1.8 GHz Intel Core i7 4 GB 1333 MHz DDR3 with 250 GB Flash) stuck every approx. 10th time, not always. Same on my brandnew MacBook Pro 2.6 GHz Intel Core i7, 16 GB 1600 MHz DDR3 with 1 TB Flash. This is not a hardware problem. It is a Mavericks problem. Under Mountain Lion I did not have any problems.
Is there any way to get rid of the annoying wait cycles?
Output of EtreCheck follows:
Hardware Information:
MacBook Pro (Retina, 15-inch, Late 2013)
MacBook Pro - model: MacBookPro11,2
1 2.6 GHz Intel Core i7 CPU: 4 cores
16 GB RAM
Video Information:
Intel Iris Pro - VRAM: 1024 MB
Audio Plug-ins:
BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
AirPlay: Version: 1.9 - SDK 10.9
AppleAVBAudio: Version: 2.0.0 - SDK 10.9
iSightAudio: Version: 7.7.3 - SDK 10.9
System Software:
OS X 10.9.1 (13B3116) - Uptime: 1 day 20:52:39
Disk Information:
APPLE SSD SM1024F disk0 : (1 TB)
EFI (disk0s1) <not mounted>: 209,7 MB
Macintosh HD (disk0s2) /: 999,7 GB (797,68 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
USB Information:
Apple Internal Memory Card Reader
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Logitech USB Mouse
FireWire Information:
Thunderbolt Information:
Apple Inc. thunderbolt_bus
Kernel Extensions:
org.virtualbox.kext.VBoxDrv (4.1.8)
org.virtualbox.kext.VBoxUSB (4.1.8)
com.avatron.AVExVideo (1.7 - SDK 10.8)
net.telestream.driver.TelestreamAudio (1.0.4 - SDK 10.6)
com.avatron.AVExFramebuffer (1.7 - SDK 10.8)
Problem System Launch Daemons:
Problem System Launch Agents:
Launch Daemons:
[loaded] com.adobe.fpsaud.plist
[loaded] com.barebones.textwrangler.plist
[loaded] com.google.keystone.daemon.plist
[loaded] com.microsoft.office.licensing.helper.plist
[loaded] org.gpgtools.gpgmail.patch-uuid.plist
[loaded] org.macosforge.xquartz.privileged_startx.plist
Launch Agents:
[not loaded] com.adobe.AAM.Updater-1.0.plist
[loaded] com.google.keystone.agent.plist
[loaded] org.gpgtools.gpgmail.enable-bundles.plist
[loaded] org.gpgtools.gpgmail.patch-uuid-user.plist
[loaded] org.gpgtools.Libmacgpg.xpc.plist
[loaded] org.gpgtools.macgpg2.fix.plist
[loaded] org.gpgtools.macgpg2.shutdown-gpg-agent.plist
[loaded] org.gpgtools.macgpg2.updater.plist
[loaded] org.macosforge.xquartz.startx.plist
User Launch Agents:
[loaded] com.adobe.ARM.[...].plist
[not loaded] org.virtualbox.vboxwebsrv.plist
User Login Items:
Aktivitätsanzeige
iTunesHelper
SpeechSynthesisServer
Microsoft Database Daemon
EvernoteHelper
ScreenFlowHelper
AdobeResourceSynchronizer
ScreenFlowHelper
Dropbox
Google Drive
AirDisplayStatusItem
ScreenCapture
Air Display Host
Google Chrome
fuspredownloader
3rd Party Preference Panes:
Flash Player
Flip4Mac WMV
GPGPreferences
Pastebot Sync
Internet Plug-ins::
Flip4Mac WMV Plugin: Version: 3.2.0.16 - SDK 10.8
FlashPlayer-10.6: Version: 11.9.900.170 - SDK 10.6
Default Browser: Version: 537 - SDK 10.9
Flash Player: Version: 11.9.900.170 - SDK 10.6
QuickTime Plugin: Version: 7.7.3
o1dbrowserplugin: Version: 4.9.1.16010
npgtpo3dautoplugin: Version: 0.1.44.29 - SDK 10.5
googletalkbrowserplugin: Version: 4.9.1.16010
Silverlight: Version: 5.1.20913.0 - SDK 10.6
User Internet Plug-ins::
WebEx64: Version: 1.0 - SDK 10.6
Google Earth Web Plug-in: Version: 7.1
Bad Fonts:
None
Old applications:
Audacity: Version: 2.0.3.0 - SDK 10.4
/Applications/Audacity/Audacity.app
Cisco WebEx Meetings: Version: 1211.02.2808.0 - SDK 10.5
.../WebEx Folder/12_1324/Meeting Center.app
Keynote: Version: 5.3 - SDK 10.5
/Applications/iWork '09/Keynote.app
Time Machine:
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Destinations:
My Passport [Local] (Last used)
Total size: 931.16 GB
Total number of backups: 51
Oldest backup: 2011-12-16 12:40:10 +0000
Last backup: 2013-12-08 09:13:22 +0000
Size of backup disk: Excellent
Backup size 931.16 GB > (Disk size 0 B X 3)
Time Machine details may not be accurate.
All volumes being backed up may not be listed.
Top Processes by CPU:
13% coreaudiod
10% thunderbird
9% GarageBand
3% WindowServer
1% Activity Monitor
Top Processes by Memory:
1.52 GB GarageBand
377 MB thunderbird
360 MB WindowServer
279 MB Preview
197 MB Safari
Virtual Memory Statistics:
7.41 GB Free RAM
5.80 GB Active RAM
858 MB Inactive RAM
1.63 GB Wired RAM
1.57 GB Page-ins
0 B Page-outs
Similar Messages
-
Windows 8.1 File System Performance Down Compared to Windows 7
I have a good workstation and a fast SSD array as my boot volume.
Ever since installing Windows 8.1 I have found the file system performance to be somewhat slower than that of Windows 7.
There's nothing wrong with my setup - in fact it runs as stably as it did under Windows 7 on the same hardware with a similar configuration.
The NTFS file system simply isn't quite as responsive on Windows 8.1.
For example, under Windows 7 I could open Windows Explorer, navigate to the root folder of C:, select all the files and folders, then choose
Properties. The system would count up all the files in all the folders at a rate of about
30,000 files per second
the first time, then about 50,000 files per second the next time, when all the file system data was already cached in RAM.
Windows 8.1 will enumerate roughly
10,000 files per second the first time, and around
18,000 files per second the second time -
a roughly 1 to 3 slowdown. The reduced speed once the data is cached in RAM implies that something in the operating system is the bottleneck.
Not every operation is slower. I've benchmarked raw disk I/O, and Windows 8.1 can sustain almost the same data rate, though the top speed is a little lower. For example, Windows 7 vs. 8 comparisons using the ATTO speed benchmark:
Windows 7:
Windows 8:
-Noel
Detailed how-to in my eBooks:
Configure The Windows 7 "To Work" Options
Configure The Windows 8 "To Work" OptionsNo worries, and thanks for your response.
The problem can be characterized most quickly by the slowdown in enumerating files in folders. Unfortunately, besides some benchmarks that show only an incremental degradation in file read/write performance, I don't have any good before/after
measurements of other actual file operations.
Since posting the above I have verified:
My system has 8dot3 support disbled (same as my Windows 7 setup did).
Core Parking is disabled; CPU benchmarks are roughly equivalent to what they were.
File system caching is configured the same.
CHKDSK reports no problems
C:\TEMP>fsutil fsinfo ntfsInfo C:
NTFS Volume Serial Number : 0xdc00eddf00edc11e
NTFS Version : 3.1
LFS Version : 2.0
Number Sectors : 0x00000000df846fff
Total Clusters : 0x000000001bf08dff
Free Clusters : 0x000000000c9c57c5
Total Reserved : 0x0000000000001020
Bytes Per Sector : 512
Bytes Per Physical Sector : 512
Bytes Per Cluster : 4096
Bytes Per FileRecord Segment : 1024
Clusters Per FileRecord Segment : 0
Mft Valid Data Length : 0x0000000053f00000
Mft Start Lcn : 0x00000000000c0000
Mft2 Start Lcn : 0x0000000000000002
Mft Zone Start : 0x0000000008ad8180
Mft Zone End : 0x0000000008ade6a0
Resource Manager Identifier : 2AFD1794-8CEE-11E1-90F4-005056C00008
C:\TEMP>fsutil fsinfo volumeinfo c:
Volume Name : C - NoelC4 SSD
Volume Serial Number : 0xedc11e
Max Component Length : 255
File System Name : NTFS
Is ReadWrite
Supports Case-sensitive filenames
Preserves Case of filenames
Supports Unicode in filenames
Preserves & Enforces ACL's
Supports file-based Compression
Supports Disk Quotas
Supports Sparse files
Supports Reparse Points
Supports Object Identifiers
Supports Encrypted File System
Supports Named Streams
Supports Transactions
Supports Hard Links
Supports Extended Attributes
Supports Open By FileID
Supports USN Journal
I am continuing to investigate:
Whether file system fragmentation could be an issue. I think not, since I measured the slowdown immediately after installing Windows 8.1.
All of the settings in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem
Thank you in advance for any and all suggestions.
-Noel
Detailed how-to in my eBooks:
Configure The Windows 7 "To Work" Options
Configure The Windows 8 "To Work" Options -
Bad Hard Drive or Bad File System?
Good morning.
A few months ago my late 2008 iMac went to the Genius Bar for what I was convinced was a bad hard drive. I was having long "beachball" pauses, until I couldn't do much without waiting several seconds, at least, for the program to respond, even if I wasn't running much of anything. I started seeing I/O errors in the kernel log pointing to the system disk. Finally, the system stopped booting, getting stuck forever at the grey apple screen. The disk utility was unable to repair the file system and the complete hardware test confirmed a problem with the hard drive.
So I was pretty surprised when I lugged the thing to the Genius Bar and they decided the file system was just totally messed up. They reinstalled Snow Leopard (something I could have done at home, had the tech on the phone not agreed with me that it was a physical issue), and I went home. It worked great for a time. I couldn't understand how a system could develop a problem so severe, but it worked and I was happy.
But now it looks like I'm running into the same issue. WoW chokes. Firefox freezes. iTunes 10 makes me want punch a wall. I'm not necessarily running all three at the same time, and other program are starting to act the same way. And as of last night, those I/O errors are appearing in my log again (oh yeah, the console freezes too).
If it's not a physical disk issue, I just don't understand how this could happen twice. IIRC, the Genius explained that the file system is self-healing, but eventually the problems stack up until it just craps itself. Is HFS such a delicate flower? I was gently admonished for doing things like running WoW and having a Bootcamp partition (the latter of which I don't have now). This seems like a silly thing to worry about. Both are perfectly normal uses of any reasonably powerful system.
Could it really be messed up a second time? Should I just insist that the hard drive be replaced? If you do think it's nothing more than a logical issue, can you help me understand how this happens and how to prevent it? I'm trying to understand Macs as well as I understand Windows-based PCs.
Thanks!Thanks for the reassurance on HFS, Macbig. I wanted to trust the expertise of the Genius, but it was a pretty confusing situation. I saw every sign that on a non-Mac would scream failing hard drive, including an actual failed hardware test, and to have someone confidently tell me that the hard drive was fine and that the test could determine the drive was failed based on a screwy file system left me doubtful that I could ever quite understand these Macs.
I know I won't be able to take my iMac in for service this week, but maybe I can get a ticket in for parts in the meantime.
WZZZ, I will definitely run the extended test again. S.M.A.R.T reports all is well, but I can't remember the last time I've seen S.M.A.R.T warn of approaching doom before it was too late. -
Solaris file system performance
I run postmark on solaris and ext3 to compare their performance. I found the Solaris is three times slower than ext3. Is there anything wrong? I use "mount" to display all mount point and can see logging is open for the disk I'm testing. I tried closing the logging by "mount -o nologging" and the performance if even worse. So I think the logging is working. But why the performance is still so bad? My computer has 2G ram and the disk I'm using is SATA disk. I found the white paper from SUN says solaris is much faster than ext3 and they use postmark too. Is there any other parameter?
postmark is all about metadata operation performance. Which UFS has always been fairly bad at since solaris is paranoid about flushing metadata and syncing the disks religously to avoid filesystem corruption in case of sudden reboot.
Logging is not primarily a performance optimisation. Its primary function is to avoid having to fsck the disk after an unclean shutdown. So its not surprising that logging doesnt help postmark all that much.
You can try mounting the filesystem noatime which should help a bit.
You can also try ZFS inctead of UFS which supposedly has excellent postmark scores.
You should also be aware that postmark is a very contrived benchmark which only adequately represents the performance of a small subset of programs. Specifically those which manipulate large numbers of small files. Like a mail server. -
Export for system copy fails - Error 9 (Bad file number)
Hello all,
I am attempting to perform the export phase for a hetergenous system copy on our BI system (BI 7.0 - NW2004s). This system runs on HP-UX 11.11 using Oracle 10.2.0.2 and will be migrated to Windows Server 2003 and MS SQL Server 2005, once the export is complete.
While running sapinst to export the data from the source system, there are several input dialog screens that are skipped, which means I am not able to enter all the paramters used for the export. After seeing this behavior from sapinst, I reviewed the sapinst.log and sapinst_dev.log files and find the warning/error "System call failed. Error 9 (Bad file number)". I have included a portion of these files below.
I have reviewed notes 546006 and 583861, but these seem to refer to an Oracle error ORA-27121, but I am not receiving any Oracle errors in sapinst.log or the Oracle alert log. I have looked for possible permission or ownership problems with any of the SAP or Oracle files, but have not found any that were incorrect. Also, these errors do not specify which file sapinst is having problems with, so I do not have a specific file or area to check.
If anyone has seen something similar to this and has any suggestions, I would greatly appreciate any help.
sapinst.log details:
INFO 2009-02-14 15:15:51.67
Execute step collect of component |NW_Export|ind|ind|ind|ind|0|0|NW_GetSidFromProfiles|ind|ind|ind|ind|1|0|NW_readProfileDir|ind|ind
|ind|ind|0|0
INFO 2009-02-14 15:15:52.737
Account bwpadm already exists.
WARNING 2009-02-14 15:15:52.747
System call failed. Error 9 (Bad file number) in execution of system call 'getgrent' with parameter (), line (292) in file (syuxcuse
r.cpp).
INFO 2009-02-14 15:15:52.757
Account 0 already exists.
WARNING 2009-02-14 15:15:52.777
System call failed. Error 9 (Bad file number) in execution of system call 'getgrent' with parameter (), line (292) in file (syuxcuse
r.cpp).
INFO 2009-02-14 15:15:52.777
Account 200 already exists.
WARNING 2009-02-14 15:15:52.827
System call failed. Error 9 (Bad file number) in execution of system call 'getgrent' with parameter (), line (292) in file (syuxcuse
r.cpp).
INFO 2009-02-14 15:16:04.937
Creating file /tmp/sapinst_instdir/NW04S/LM/COPY/ORA/EXP/CENTRAL/AS/EXP/ypcat.log.
INFO 2009-02-14 15:16:05.007
Output of ypcat passwd.byname is written to the logfile ypcat.log.
sapinst_dev.log details:
TRACE 2009-02-14 15:15:52.737
2009-02-14 15:15:52.743 NW._getSAPMount() done: /sapmnt
INFO 2009-02-14 15:15:52.737 [syuxcaccmg.cpp:227]
bool CSyAccountMgtImpl::isExisting(ISyAccountMgt::eAccountType accountType, iastring sName)
Account bwpadm already exists.
TRACE 2009-02-14 15:15:52.747 [syuxcuser.cpp:1943]
CSyUserImpl_getOsInfos(ILogBook *m_logBook, iastring sName, iastring sID, tSyUserInfo& msUserinfo)
getspnam(bwpadm) returned NULL.
WARNING 2009-02-14 15:15:52.747 [syxxsyshlp.cpp:78]
syslib::printOSError(const iastring &, int, DWORD, const iastring &, CMessage::eLogMessage)
System call failed. Error 9 (Bad file number) in execution of system call 'getgrent' with parameter (), line (292) in file (syuxcuse
r.cpp).
Regards,
Rusty RobbinsHello Peter,
Thanks for the reply. I did confirm the points you made, and have the details below.
1. check filesystem, if you have enough space, especially /tmp
All filesystems have available space, and /tmp has 310 MB available, before the start of sapinst.
2. check again alert log, trace log for Oracle,
I could not find any errors in the alert_SID.log or any unusual trace files.
3. How did you run sapinst? Are you using "root" account.
I am running sapinst as user root and I am following all the recomendations in the system copy guide (at least as far as I can tell. ;p )
We have four BI systems in this landscape, and the other three have migrated successfully. The procedure I am using, is the same as for the other 3 systems and uses the same SAP media directory that was used on the other systems.
One other item that may be part of my problem here, is that this system is the production system, and was originally installed as a high-availability system, using HP-UX Service Guard for clustering. Currently, this system does not have fail-over enabled, but of course the cluster is still intact. One required piece of the Service Guard enviornment is the use of a virtual hostname. This seems to resolve successfully by sapinst, as I see the correct (virtual) hostname referenced several times. While this is a clustered system (for fail-over purposes), the CI and DB are installed on the same host. So it is not a distributed system, and if failover had been initiated, it would fail both the CI and DB instance, which is the same and only SAP instance.
This did raise one question in my mind, however. I am attempting to extract this using the following menu path within sapinst.
SAP NetWeaver 7.0 Support Release 3 --> Software Life-Cycle Options --> System Copy --> Oracle --> Source System Export --> Central System --> Based on AS ABAP and AS Java
Since this does use Service Guard, but is not a distributed system, should I be using a different path in the sapinst tree, for the export? I have only performed a migration using the above path, so I am not familar with the detailf of the other types, such as High-Availabitly or Distributed-System.
Regards,
Rusty -
Mavericks Server; smbd: File system does not support 0x0, time/size attrs
So I recently installed a Mac Mini with Mavericks and Server 3.2.2 in the main office of my company and everything has been going well, minus a few expected bugs, until recently. Starting last week we've been experiencing random intervals where File Sharing stopped working altogether, and I'd been able to reboot and get it running again. Unfortunately, as I'm the Systems and Server Admin, I've been too busy to look at the logs until now (following the degradation of one of the drives in our DAT-Optic RAID system, I figured it was time to make it a priority), and I'm seeing dozens of entries in the system logs regarding the process smbd with file system does not support errors.
Here's an example.
11/19/14 9:56:21.107 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.107 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.107 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.107 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.107 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.107 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.108 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.108 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.108 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.108 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.108 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.108 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.110 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.110 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.110 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.119 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.119 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.119 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.119 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.119 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.119 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.124 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.124 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.124 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.124 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.124 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.124 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.125 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.125 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.125 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.125 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.125 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.125 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.130 AM smbd[602]: File system does not support 0X40000, file attrs
11/19/14 9:56:21.130 AM smbd[602]: File system does not support 0X0 time attrs
11/19/14 9:56:21.130 AM smbd[602]: File system does not support 0X0, size attrs
11/19/14 9:56:21.131 AM smbd[602]: File system does not support 0X40000, file attrs
As far as I can tell, nothing else has changed in our system except for the fact that one of the drives died and was rebuilt as of yesterday (these smbd problems extend to last week shortly after I updated to 3.2.2 I believe). Any help would be much appreciated. I would normally first attempt a repair permissions to see if the issue is related to a bad plist somewhere but the last time we did that, our ACLs were duplicated across our file share and often incorrectly. I'm not sure if it's just me but the last Mac Server software I used was Snow Leopard Server (when it was still a full OS version) and it was infinitely more stable than what I've experienced thus far with Server 3. Anyway, I appreciate any help/advice that can be given and I apologize for the rant.Been getting the same errors for a while.
1/13/15 11:38:04.975 AM smbd[1112]: File system does not support 0X40000, file attrs
1/13/15 11:38:04.975 AM smbd[1112]: File system does not support 0X0 time attrs
1/13/15 11:38:04.975 AM smbd[1112]: File system does not support 0X0, size attrs
1/13/15 11:38:05.124 AM smbd[1112]: File system does not support 0X40000, file attrs
1/13/15 11:38:05.124 AM smbd[1112]: File system does not support 0X0 time attrs
1/13/15 11:38:05.124 AM smbd[1112]: File system does not support 0X0, size attrs
Believe they are related to random disconnects from the file server (10.9.5). -
1) Could not start up os x
2) Only could start bootcamp
3) Tried resetting nvram
4) Could not start even in bootcamp
5) Verify disk says …. Verifying volume “Macintosh HD”
Error: Live file system repair is not supported
6) Installed maverick on USB drive
7) Boot from USB drive. Tried verifying HD: Volume header needs minor repair. The volume Recovery HD was found corrupt and needs to be repaired. Verifying volume “Macintosh HD”: Error: live file system repair is not supported.
8) The terminal code says
9) Last login: Wed Feb 11 14:09:47 on console
10) xxxx-MacBook:~ xxxx$ diskutil list
11) /dev/disk0
12) #: TYPE NAME SIZE IDENTIFIER
13) 0: GUID_partition_scheme *160.0 GB disk0
14) 1: EFI EFI 209.7 MB disk0s1
15) 2: Apple_HFS Macintosh HD 80.1 GB disk0s2
16) 3: Apple_Boot Recovery HD 650.0 MB disk0s3
17) 4: Microsoft Basic Data 50.0 GB disk0s4
18) /dev/disk1
19) #: TYPE NAME SIZE IDENTIFIER
20) 0: GUID_partition_scheme *15.6 GB disk1
21) 1: EFI EFI 209.7 MB disk1s1
22) 2: Apple_HFS BOOT 14.8 GB disk1s2
23) 3: Apple_Boot Recovery HD 650.0 MB disk1s3
24) Saeedehs-MacBook:~ saeedehmirbagheri$ diskutil cs list
25) No CoreStorage logical volume groups found
26) Saeedehs-MacBook:~ saeedehmirbagheri$ sudo gpt -vv -r show /dev/disk0
27) Password:
28) gpt show: /dev/disk0: mediasize=160041885696; sectorsize=512; blocks=312581808
29) gpt show: /dev/disk0: PMBR at sector 0
30) gpt show: /dev/disk0: Pri GPT at sector 1
31) gpt show: /dev/disk0: Sec GPT at sector 312581807
32) start size index contents
33) 0 1 PMBR
34) 1 1 Pri GPT header
35) 2 32 Pri GPT table
36) 34 6
37) 40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
38) 409640 156394528 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
39) 156804168 1269544 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
40) 158073712 56853648
41) 214927360 97652736 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
42) 312580096 1679
43) 312581775 32 Sec GPT table
44) 312581807 1 Sec GPT header
45) xxxx-MacBook:~ xxxx$ sudo fdisk /dev/disk0
46) Disk: /dev/disk0 geometry: 19457/255/63 [312581808 sectors]
47) Signature: 0xAA55
48) Starting Ending
49) #: id cyl hd sec - cyl hd sec [ start - size]
50) ------------------------------------------------------------------------Thank you -
I booted from external USB. The diskutil list output is from OS x booting from the USB, which shows the following:
Saeedehs-MacBook:~ saeedehmirbagheri$ diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *160.0 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_HFS Macintosh HD 80.1 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data 50.0 GB disk0s4
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *15.6 GB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_HFS BOOT 14.8 GB disk1s2
3: Apple_Boot Recovery HD 650.0 MB disk1s3
Saeedehs-MacBook:~ saeedehmirbagheri$ diskutil cs list
No CoreStorage logical volume groups found
I am not able to use target disk mode because I don't have firewire/thunderbolt ports. -
I have a HDD under MS-DOS, which claims transfer speeds above and beyond of 480MB/s, but the actual speeds I have been getting are closer to 300kB/s. Is there a way to improve this merely by reformatting volume to another file system?
If you don't need to use it with PCs, copy any data you want to keep off and reformat it as Mac OS Extended (Journaled). Also, since it seems to be connected through USB 2.0, unplug all unnecessary devices when transferring data to improve performance.
(62387) -
hi.
i was wondering if anyone could offer any insight into how to
assess the performance of the file system cache. I am interested
in things like hit rate (which % of pages read are coming from the
cache instead of from disk), the amount of data read from the cache
over a time span, etc.
outside of the ::memstat dcmd for mdb, i cannot seem to find a whole lot about this topic.
thanks.sar will give you what you need....
-
Warming up File System Cache for BDB Performance
Hi,
We are using BDB DPL - JE package for our application.
With our current machine configuration, we have
1) 64 GB RAM
2) 40-50 GB -- Berkley DB Data Size
To warm up File System Cache, we cat the .jdb files to /dev/null (To minimize the disk access)
e.g
// Read all jdb files in the directory
p = Runtime.getRuntime().exec("cat " + dirPath + "*.jdb >/dev/null 2>&1");
Our application checks if new data is available every 15 minutes, If new Data is available then it clears all old reference and loads new data along with Cat *.jdb > /dev/null
I would like to know that if something like this can be done to improve the BDB Read performance, if not is there any better method to Warm Up File System Cache ?
Thanks,We've done a lot of performance testing with how to best utilize memory to maximize BDB performance.
You'll get the best and most predictable performance by having everything in the DB cache. If the on-disk size of 40-50GB that you mention includes the default 50% utilization, then it should be able to fit. I probably wouldn't use a JVM larger than 56GB and a database cache percentage larger than 80%. But this depends a lot on the size of the keys and values in the database. The larger the keys and values, the closer the DB cache size will be to the on disk size. The preload option that Charles points out can pull everything into the cache to get to peak performance as soon as possible, but depending on your disk subsystem this still might take 30+ minutes.
If everything does not fit in the DB cache, then your best bet is to devote as much memory as possible to the file system cache. You'll still need a large enough database cache to store the internal nodes of the btree databases. For our application and a dataset of this size, this would mean a JVM of about 5GB and a database cache percentage around 50%.
I would also experiment with using CacheMode.EVICT_LN or even CacheMode.EVICT_BIN to reduce the presure on the garbage collector. If you have something in the file system cache, you'll get reasonably fast access to it (maybe 25-50% as fast as if it's in the database cache whereas pulling it from disk is 1-5% as fast), so unless you have very high locality between requests you might not want to put it into the database cache. What we found was that data was pulled in from disk, put into the DB cache, stayed there long enough to be promoted during GC to the old generation, and then it was evicted from the DB cache. This long-lived garbage put a lot of strain on the garbage collector, and led to very high stop-the-world GC times. If your application doesn't have latency requirements, then this might not matter as much to you. By setting the cache mode for a database to CacheMode.EVICT_LN, you effectively tell BDB to not to put the value or (leaf node = LN) into the cache.
Relying on the file system cache is more unpredictable unless you control everything else that happens on the system since it's easy for parts of the BDB database to get evicted. To keep this from happening, I would recommend reading the files more frequently than every 15 minutes. If the files are in the file system cache, then cat'ing them should be fast. (During one test we ran, "cat *.jdb > /dev/null" took 1 minute when the files were on disk, but only 8 seconds when they were in the file system cache.) And if the files are not all in the file system cache, then you want to get them there sooner rather than later. By the way, if you're using Linux, then you can use "echo 1 > /proc/sys/vm/drop_caches" to clear out the file system cache. This might come in handy during testing. Something else to watch out for with ZFS on Solaris is that sequentially reading a large file might not pull it into the file system cache. To prevent the cache from being polluted, it assumes that sequentially reading through a large file doesn't imply that you're going to do a lot of random reads in that file later, so "cat *.jdb > /dev/null" might not pull the files into the ZFS cache.
That sums up our experience with using the file system cache for BDB data, but I don't know how much of it will translate to your application. -
A bad scare: root file system recovery [SOLVED]
Hi, everybody,
The trouble began with an odd message: KDE Daemon: new storage detected (hard disk): open in a new window, ignore. Unfortunately, the hard disk in question is statically mounted via /etc/fstab; should have been mounted all along.
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/cdrom /mnt/cdrom iso9660 ro,user,noauto,unhide,iocharset=utf8 0 0
/dev/dvd /mnt/dvd udf ro,user,noauto,unhide,iocharset=utf8 0 0
/dev/fd0 /mnt/fd0 vfat user,noauto 0 0
/dev/sdb1 swap swap defaults 0 0
/dev/sdb2 / ext3 defaults 0 1
/dev/sdb3 /home ext3 defaults 0 1
#/dev/sda1 /home/alexey/mnt/a ext3 defaults 0 1
It's /dev/sda1, now commented. Real trouble began when I tried to reboot. The kernel told me there's no root file system on sdb2; it checked the disks unsuccessfully, with scary messages about bad device names and device blocks, advised me to use rootfstype=kernel option, etc. sda1 turned out "bad" too. In fallback mode the system booted, but with file systems mounted read only; not much use... Using some recovery disk I commented out the /dev/sda1 line in /etc/fstab on suspicion that sda is the real offender; tried to reboot, without much success, then rebooted again, and something clicked into place; the system is back to normal, but I fear to approach sda1 . What happened? Any suggestion/link is going to be appreciated. It was pure luck; next time it could be much worse.
Edit:
Looks like 'clicked into place' is just the fallback kernel; kernel-related issue? It ran smoothly after the initial upgrade for a couple of weeks.
Edit:
A relevant snippet from kernel.log:
Apr 23 19:52:25 stovepipebox ata1: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0xffa0 irq 14
Apr 23 19:52:25 stovepipebox ata2: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xffa8 irq 15
Apr 23 19:52:25 stovepipebox ata2.00: ATAPI: _NEC DVD_RW ND-4550A, 1.06, max UDMA/33
Apr 23 19:52:25 stovepipebox ata2.00: configured for UDMA/33
Apr 23 19:52:25 stovepipebox scsi 1:0:0:0: CD-ROM _NEC DVD_RW ND-4550A 1.06 PQ: 0 ANSI: 5
Apr 23 19:52:25 stovepipebox sata_nv 0000:00:0e.0: version 3.5
Apr 23 19:52:25 stovepipebox ACPI: PCI Interrupt Link [LSA0] enabled at IRQ 23
Apr 23 19:52:25 stovepipebox ACPI: PCI Interrupt 0000:00:0e.0[A] -> Link [LSA0] -> GSI 23 (level, low) -> IRQ 16
Apr 23 19:52:25 stovepipebox PCI: Setting latency timer of device 0000:00:0e.0 to 64
Apr 23 19:52:25 stovepipebox scsi2 : sata_nv
Apr 23 19:52:25 stovepipebox scsi3 : sata_nv
Apr 23 19:52:25 stovepipebox ata3: SATA max UDMA/133 cmd 0xe800 ctl 0xe480 bmdma 0xe000 irq 16
Apr 23 19:52:25 stovepipebox ata4: SATA max UDMA/133 cmd 0xe400 ctl 0xe080 bmdma 0xe008 irq 16
Apr 23 19:52:25 stovepipebox ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
Apr 23 19:52:25 stovepipebox ata3.00: ATA-6: ST3120827AS, 3.42, max UDMA/133
Apr 23 19:52:25 stovepipebox ata3.00: 234441648 sectors, multi 16: LBA48 NCQ (depth 0/32)
Apr 23 19:52:25 stovepipebox ata3.00: model number mismatch 'ST3120827AS' != '3120827AS '
Apr 23 19:52:25 stovepipebox ata3.00: revalidation failed (errno=-19)
Apr 23 19:52:25 stovepipebox ata3: limiting SATA link speed to 1.5 Gbps
Apr 23 19:52:25 stovepipebox ata3.00: limiting speed to UDMA/133:PIO3
Apr 23 19:52:25 stovepipebox ata3: failed to recover some devices, retrying in 5 secs
Apr 23 19:52:25 stovepipebox ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
Apr 23 19:52:25 stovepipebox ata3.00: configured for UDMA/133
Apr 23 19:52:25 stovepipebox ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
Apr 23 19:52:25 stovepipebox ata4.00: ATA-7: ST3320620AS, 3.AAK, max UDMA/133
Apr 23 19:52:25 stovepipebox ata4.00: 625142448 sectors, multi 16: LBA48 NCQ (depth 0/32)
Apr 23 19:52:25 stovepipebox ata4.00: configured for UDMA/133
Apr 23 19:52:25 stovepipebox scsi 2:0:0:0: Direct-Access ATA ST3120827AS 3.42 PQ: 0 ANSI: 5
Apr 23 19:52:25 stovepipebox scsi 3:0:0:0: Direct-Access ATA ST3320620AS 3.AA PQ: 0 ANSI: 5
This "model number mismatch 'ST3120827AS' != '3120827AS " looks like a result of a corrupted config (at least, I suspect so ). Any questions/suggestions?
Last edited by Llama (2008-05-02 20:20:04)I had this same damn thing happen. The problem is in the way the kernel gets its info from the bios. The bios has a nasty habit of switching the drives around even when sda is connected to sata1. This became a problem when libata came about and changed all drives to sdxX naming convention.
To fix the no booting problem and the stupid rootfstype= error thing, u need to use Persistent block naming device scheme. Here on the wiki is a page dedicated to this... http://wiki.archlinux.org/index.php/Per … ice_naming
Try it and see if it helps. I used the /dev/by-uuid. -
Hardware Information:
iMac (27-inch, Late 2009)
iMac - model: iMac11,1
1 2.66 GHz Intel Core i5 CPU: 4 cores
16 GB RAM
Video Information:
ATI Radeon HD 4850 - VRAM: 512 MB
Audio Plug-ins:
BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
AirPlay: Version: 1.9 - SDK 10.9
AppleAVBAudio: Version: 2.0.0 - SDK 10.9
iSightAudio: Version: 7.7.3 - SDK 10.9
Startup Items:
HDDFanControlDaemon: Path: /Library/StartupItems/HDDFanControlDaemon
HP IO: Path: /Library/StartupItems/HP IO
System Software:
OS X 10.9 (13A603) - Uptime: 15 days 6:58:4
Disk Information:
WDC WD2003FZEX-00Z4SA0 disk0 : (2 TB)
EFI (disk0s1) <not mounted>: 209.7 MB
Macintosh HD (disk0s2) /: 2 TB (1.09 TB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
OPTIARC DVD RW AD-5680H disk4 : (1.4 GB)
disk4s1 (disk4s1) <not mounted>: 18 KB
ScanSnap (disk4s2) /Volumes/ScanSnap 1: 943.7 MB (70.5 MB free)
USB Information:
Fujitsu ScanSnap S1500
Elgato EyeTV HD
Apple Internal Memory Card Reader
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Fitbit Inc. Fitbit Base Station
Mitsumi Electric Hub in Apple Extended USB Keyboard
Mitsumi Electric Apple Extended USB Keyboard
SanDisk Firebird USB Flash Drive 16.01 GB
POPPI 80TH (disk1s1) /Volumes/POPPI 80TH: 16.01 GB (13.03 GB free)
Apple Inc. Built-in iSight
Apple Computer, Inc. IR Receiver
FireWire Information:
Thunderbolt Information:
Kernel Extensions:
com.logmein.driver.LogMeInSoundDriver (1.0.3 - SDK 10.5)
Problem System Launch Daemons:
Problem System Launch Agents:
Launch Daemons:
[loaded] com.adobe.fpsaud.plist
[loaded] com.carbonite.launchd.carbonitedaemon.plist
[loaded] com.elgato.EyeConnect.plist
[loaded] com.fitbit.galileod.plist
[not loaded] com.logmein.logmeinblanker.plist
[loaded] com.logmein.logmeinserver.plist
[not loaded] com.logmein.raupdate.plist
[loaded] com.microsoft.office.licensing.helper.plist
Launch Agents:
[not loaded] com.adobe.AAM.Updater-1.0.plist
[loaded] com.carbonite.launchd.carbonitealerts.plist
[loaded] com.carbonite.launchd.carbonitestatus.plist
[loaded] com.hp.help.tocgenerator.plist
[failed] com.logmein.LMILaunchAgentFixer.plist
[loaded] com.logmein.logmeingui.plist
[loaded] com.logmein.logmeinguiagent.plist
[not loaded] com.logmein.logmeinguiagentatlogin.plist
User Launch Agents:
[loaded] com.adobe.ARM.[...].plist
[loaded] com.adobe.ARM.[...].plist
[failed] com.apple.SafariBookmarksSyncer.plist
[loaded] com.google.keystone.agent.plist
User Login Items:
HDD Fan Control Monitor
Fitbit Connect Menubar Helper
Dropbox
EyeTV Helper
ScanSnap Manager
3rd Party Preference Panes:
Carbonite
Flash Player
Flip4Mac WMV
HDD Fan Control
MacFUSE
Internet Plug-ins::
Default Browser: Version: 537 - SDK 10.9
Flip4Mac WMV Plugin: Version: 2.4.4.2
AdobePDFViewerNPAPI: Version: 11.0.02 - SDK 10.6
FlashPlayer-10.6: Version: 11.9.900.170 - SDK 10.6
LogMeIn: Version: 1.0.961 - SDK 10.7
Silverlight: Version: 5.1.10411.0 - SDK 10.6
Flash Player: Version: 11.9.900.170 - SDK 10.6
LogMeInSafari32: Version: 1.0.961 - SDK 10.7
QuickTime Plugin: Version: 7.7.3
SharePointBrowserPlugin: Version: 14.3.8 - SDK 10.6
AdobePDFViewer: Version: 11.0.02 - SDK 10.6
GarminGpsControl: Version: 4.0.1.0 Release - SDK 10.6
iPhotoPhotocast: Version: 7.0
User Internet Plug-ins::
Move-Media-Player: Version: npmnqmp 071102000006
WebEx: Version: 1.0
CitrixOnlineWebDeploymentPlugin: Version: 1.0.105
Google Earth Web Plug-in: Version: 7.1
RealPlayer Plugin: Version: (null)
Bad Fonts:
None
Old applications:
FirmwareUpdateTool: Version: 2.2 - SDK 10.0
/Applications/FirmwareUpdateTool.app
Garmin WebUpdater: Version: 2.1.3 - SDK 10.4
/Applications/Garmin WebUpdater.app
Image Data Converter Ver: Version: 4.1.00.06060 - SDK 10.5
/Applications/Image Data Converter/Image Data Converter Ver.4.app
Install Spotify-1: Version: 1.0 - SDK 10.5
/Users/tmoore/Downloads/Install Spotify-1.app
Microsoft Alerts Daemon: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Alerts Daemon.app
Microsoft AutoUpdate: Version: 2.3.6 - SDK 10.4
/Library/Application Support/Microsoft/MAU2.0/Microsoft AutoUpdate.app
Microsoft Chart Converter: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Chart Converter.app
Microsoft Clip Gallery: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Clip Gallery.app
Microsoft Database Daemon: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Database Daemon.app
Microsoft Database Utility: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Database Utility.app
Microsoft Document Connection: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Microsoft Document Connection.app
Microsoft Error Reporting: Version: 2.2.9 - SDK 10.4
/Library/Application Support/Microsoft/MERP2.0/Microsoft Error Reporting.app
Microsoft Excel: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Microsoft Excel.app
Microsoft Graph: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Graph.app
Microsoft Language Register: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Additional Tools/Microsoft Language Register/Microsoft Language Register.app
Microsoft Office Reminders: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Office Reminders.app
Microsoft Office Setup Assistant: Version: 14.3.1 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Office Setup Assistant.app
Microsoft Outlook: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Microsoft Outlook.app
Microsoft PowerPoint: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Microsoft PowerPoint.app
Microsoft Ship Asserts: Version: 1.1.4 - SDK 10.4
/Library/Application Support/Microsoft/MERP2.0/Microsoft Ship Asserts.app
Microsoft Upload Center: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Microsoft Upload Center.app
Microsoft Word: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Microsoft Word.app
My Day: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/My Day.app
Numbers: Version: 2.3 - SDK 10.5
/Applications/iWork '09/Numbers.app
Open XML for Excel: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Open XML for Excel.app
Pages: Version: 4.3 - SDK 10.5
/Applications/iWork '09/Pages.app
Proxify: Version: 1.0.8.0 - SDK 10.5
/Applications/Proxify.app
SLLauncher: Version: 1.0 - SDK 10.5
/Library/Application Support/Microsoft/Silverlight/OutOfBrowser/SLLauncher.app
Scan to Dropbox: Version: 3.2.63 - SDK 10.4
/Applications/ScanSnap/Scan to Office/Scan to Dropbox.app
Scan to Salesforce Chatter: Version: 3.2.60 - SDK 10.4
/Applications/ScanSnap/Scan to Office/Scan To Salesforce.app
Scan to SugarSync: Version: 3.2.63 - SDK 10.4
/Applications/ScanSnap/Scan to Office/Scan to SugarSync.app
Solver: Version: 1.0 - SDK 10.5
/Applications/Microsoft Office 2011/Office/Add-Ins/Solver.app
SyncServicesAgent: Version: 14.3.8 - SDK 10.5
/Applications/Microsoft Office 2011/Office/SyncServicesAgent.app
TurboTax Premier 2011: Version: 2011.r17.007 - SDK 10.4
/Applications/TurboTax Premier 2011.app
Time Machine:
Skip System Files: YES
Mobile backups: OFF
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 2 Disk used: 844.02 GB
Destinations:
Data [Network] (Last used)
Total size: 3
Total number of backups: 30
Oldest backup: 2013-12-04 15:58:45 +0000
Last backup: 2013-12-21 02:39:51 +0000
Size of backup disk: Adequate
Backup size 3 > (Disk used 844.02 GB X 3)
Time Machine details may not be accurate.
All volumes being backed up may not be listed.
Top Processes by CPU:
10% CarboniteDaemon
4% WindowServer
2% EtreCheck
1% Safari
1% Fitbit Connect Menubar Helper
Top Processes by Memory:
295 MB Mail
279 MB iTunes
262 MB CarboniteDaemon
229 MB com.apple.IconServicesAgent
213 MB mds_stores
Virtual Memory Statistics:
4.66 GB Free RAM
6.49 GB Active RAM
3.58 GB Inactive RAM
1.27 GB Wired RAM
6.97 GB Page-ins
0 B Page-outsSeveral problems exist.
1.
Back up your Mac prior to making any changes to its file system. Time Machine has not been configured properly To learn how to use Time Machine read Mac Basics: Time Machine backs up your Mac - Apple Support.
2.
You inadvertently installed adware. You do not need to download or install anything to fix it.
For a description of how this may have occurred, how to avoid it in the future, and for Apple's recommended actions read How to install adware. Apple's instructions are linked in the Recovery Procedure near the end of that document. Read and follow them carefully. Pay particular attention to the easily overlooked passages directing you to restart your Mac when required.
3.
That Mac's Hosts file appears to have been modified. Fixing a modified Hosts file requires specific instructions. Apple Support Communities contributor and EtreCheck author etresoft recently added a User Tip discussing that concern, and how to correct it: Fixing a hacked /etc/hosts file -
System error 9 bad file descriptor
Hello. I am running system 10.3.9 and when I try to sync I get this error message, "system error 9 bad file descriptor." Needless to say I am unable to sync. Has anyone run into this problem? Are there any suggestions to fix it?
We have authorization problem, restric by OHD technical name.
-
Distributed File System Replication between servers with different performance
If Distributed File System Replication is set between servers with different performance. What will happen with the performance of the fastest server? Will the performance decrease to match the performance of the
slowest server in the chain? I mean, will the source slow down (processor speed) if the recipients can't keep up?Hi,
If you mix different performance server for DFS replication, most of improvements on the fastest server are disabled for backwards compatibility and the performance decrease to match the performance of the slowest server.
For more detailed information, please refer to the article below:
Tuning replication performance in DFSR (especially on Win2008 R2)
http://blogs.technet.com/b/askds/archive/2010/03/31/tuning-replication-performance-in-dfsr-especially-on-win2008-r2.aspx
Best Regards,
Mandy
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Memory Management, Crit Structure Corrupt, Bad Pool Caller, ntfs file system error
So after freshly installing Win 8.1 I was happy, untill I started to play some games that I previously played on Win 7, I've started to get a whole heap of errors, I did have more written down but have lost the bit of paper they were written on.
Here are the list of errors I can remember.
Memory Management, Crit Structure Corrupt, Bad Pool Caller, ntfs file system error
Specs:
Operating System
Windows 8.1 Pro 64-bit
CPU
AMD Athlon II X2 250
35 °C
Regor 45nm Technology
RAM
6.00GB Dual-Channel DDR2 @ 400MHz (5-5-5-18)
Motherboard
ASUSTeK Computer INC. M3N-H/HDMI (Socket AM2 )
40 °C
Graphics
SyncMaster (1440x900@60Hz)
SAMSUNG (1440x900@60Hz)
ATI Radeon HD 4800 Series (Microsoft Corporation - WDDM v1.1) (Sapphire/PCPartner)
Storage
698GB Western Digital WDC WD7500AAKS-00RBA0 ATA Device (SATA)Adam
These are Related to
atikmdag.sys ATI Radeon Kernel Mode Driver. Yours is 2+ years old. I would update to the newest driver available.
Microsoft (R) Windows Debugger Version 6.3.9600.16384 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.
Loading Dump File [C:\Users\Ken\Desktop\A040614-65203-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
************* Symbol Path validation summary **************
Response Time (ms) Location
Deferred SRV*H:\symbols*http://msdl.microsoft.com/download/symbols
Symbol search path is: SRV*H:\symbols*http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 8 Kernel Version 9600 MP (2 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 9600.16384.amd64fre.winblue_rtm.130821-1623
Machine Name:
Kernel base = 0xfffff803`be013000 PsLoadedModuleList = 0xfffff803`be2da9b0
Debug session time: Mon Apr 7 00:35:03.785 2014 (UTC - 4:00)
System Uptime: 0 days 0:08:48.334
Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
* Bugcheck Analysis *
Use !analyze -v to get detailed debugging information.
BugCheck 3B, {c0000005, fffff80001cf7d73, ffffd0002305c470, 0}
*** WARNING: Unable to verify timestamp for atikmdag.sys
*** ERROR: Module load completed but symbols could not be loaded for atikmdag.sys
Probably caused by : atikmdag.sys ( atikmdag+70d73 )
Followup: MachineOwner
0: kd> !analyze -v
* Bugcheck Analysis *
SYSTEM_SERVICE_EXCEPTION (3b)
An exception happened while executing a system service routine.
Arguments:
Arg1: 00000000c0000005, Exception code that caused the bugcheck
Arg2: fffff80001cf7d73, Address of the instruction which caused the bugcheck
Arg3: ffffd0002305c470, Address of the context record for the exception that caused the bugcheck
Arg4: 0000000000000000, zero.
Debugging Details:
EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.
FAULTING_IP:
atikmdag+70d73
fffff800`01cf7d73 8a040a mov al,byte ptr [rdx+rcx]
CONTEXT: ffffd0002305c470 -- (.cxr 0xffffd0002305c470;r)
rax=0000000000000000 rbx=ffffcf80021783a0 rcx=ffffcf8002334ff5
rdx=0000307ffdccb010 rsi=ffffcf8004734470 rdi=ffffcf80021783a0
rip=fffff80001cf7d73 rsp=ffffd0002305cea8 rbp=ffffd0002305cf00
r8=0000000000000006 r9=0000000000000000 r10=0000000000000384
r11=ffffcf8002334ff0 r12=0000000000000001 r13=ffffcf8004734470
r14=0000000000000000 r15=ffffcf8004734470
iopl=0 nv up ei ng nz na po nc
cs=0010 ss=0018 ds=002b es=002b fs=0053 gs=002b efl=00010286
atikmdag+0x70d73:
fffff800`01cf7d73 8a040a mov al,byte ptr [rdx+rcx] ds:002b:00000000`00000005=??
Last set context:
rax=0000000000000000 rbx=ffffcf80021783a0 rcx=ffffcf8002334ff5
rdx=0000307ffdccb010 rsi=ffffcf8004734470 rdi=ffffcf80021783a0
rip=fffff80001cf7d73 rsp=ffffd0002305cea8 rbp=ffffd0002305cf00
r8=0000000000000006 r9=0000000000000000 r10=0000000000000384
r11=ffffcf8002334ff0 r12=0000000000000001 r13=ffffcf8004734470
r14=0000000000000000 r15=ffffcf8004734470
iopl=0 nv up ei ng nz na po nc
cs=0010 ss=0018 ds=002b es=002b fs=0053 gs=002b efl=00010286
atikmdag+0x70d73:
fffff800`01cf7d73 8a040a mov al,byte ptr [rdx+rcx] ds:002b:00000000`00000005=??
Resetting default scope
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: VERIFIER_ENABLED_VISTA_MINIDUMP
BUGCHECK_STR: 0x3B
PROCESS_NAME: csrss.exe
CURRENT_IRQL: 0
ANALYSIS_VERSION: 6.3.9600.16384 (debuggers(dbg).130821-1623) amd64fre
LAST_CONTROL_TRANSFER: from fffff800025cf3d7 to fffff80001cf7d73
STACK_TEXT:
ffffd000`2305cea8 fffff800`025cf3d7 : ffffcf80`04734470 ffffcf80`04734470 00000000`00000000 ffffcf80`01f52450 : atikmdag+0x70d73
ffffd000`2305ceb0 ffffcf80`04734470 : ffffcf80`04734470 00000000`00000000 ffffcf80`01f52450 ffffd000`2305cf00 : atikmdag+0x9483d7
ffffd000`2305ceb8 ffffcf80`04734470 : 00000000`00000000 ffffcf80`01f52450 ffffd000`2305cf00 fffff800`025f48d3 : 0xffffcf80`04734470
ffffd000`2305cec0 00000000`00000000 : ffffcf80`01f52450 ffffd000`2305cf00 fffff800`025f48d3 ffffcf80`04734470 : 0xffffcf80`04734470
FOLLOWUP_IP:
atikmdag+70d73
fffff800`01cf7d73 8a040a mov al,byte ptr [rdx+rcx]
SYMBOL_STACK_INDEX: 0
SYMBOL_NAME: atikmdag+70d73
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: atikmdag
IMAGE_NAME: atikmdag.sys
DEBUG_FLR_IMAGE_TIMESTAMP: 4fdf9bbd
STACK_COMMAND: .cxr 0xffffd0002305c470 ; kb
FAILURE_BUCKET_ID: 0x3B_VRF_atikmdag+70d73
BUCKET_ID: 0x3B_VRF_atikmdag+70d73
ANALYSIS_SOURCE: KM
FAILURE_ID_HASH_STRING: km:0x3b_vrf_atikmdag+70d73
FAILURE_ID_HASH: {1ec4cdaf-008d-03dd-4ca9-ade1993441da}
Followup: MachineOwner
Wanikiya and Dyami--Team Zigzag
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