10.6.4 update: poor SMB performance

I have an iMac (5,1) and Macbook Pro (3,1), both of which received the 10.6.4 update. Immediately following this update, SMB performance declined to around one-sixth of its previous speed on both machines.
Connectivity from the two Macs is over a switched gigabit LAN to a server running FreeNAS 0.7.1. Copying two different 1GB files (created with dd; one was from /dev/zero, the other from /dev/random) between the Mac and fileserver or vice-versa results in a sustained data rate of 60-80Mbit; previously, 400-480Mbit was about normal.
If I connect either of the two Macs directly to the server, I get exactly the same result so network infrastructure does not appear to be part of the equation. The PCs on this network that are connected to the same fileserver do not appear to be having any issues either, so it really is looking like 10.6.4 hit something related to SMB.
Has anyone else run across this issue? I'm dealing with multigigabyte files all day, so having this kind of performance hit is not acceptable.

Just FYI: I pulled the smbd and nmbd binaries out of the 10.6.3 installer, and both report the same versions (Version 3.0.28a-apple) as their 10.6.4 counterparts. However, their md5sums are different; 'otool -L' is showing some differences in what each of the binaries was linked to:
10.6.3 (smbd):
/usr/lib/libresolv.9.dylib (compatibility version 1.0.0, current version 40.0.0)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 550.19.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.0.1)
/System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfig uration (compatibility version 1.0.0, current version 293.4.0)
10.6.4 (smbd):
/usr/lib/libresolv.9.dylib (compatibility version 1.0.0, current version 41.0.0)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 550.29.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0)
/System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfig uration (compatibility version 1.0.0, current version 293.5.0)
10.6.3 (nmbd):
/usr/lib/libresolv.9.dylib (compatibility version 1.0.0, current version 40.0.0)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 550.19.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.0.1)
10.6.4 (nmbd):
/usr/lib/libresolv.9.dylib (compatibility version 1.0.0, current version 41.0.0)
/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 550.29.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0)
It's past 2am here right now, so I'm not going to go much further with this for tonight, but tomorrow I'm going to try replacing just the /usr/sbin/nmbd binary with the one from 10.6.3, seeing if that works, and, if so, if it fixes the problem or not. If not, I'll do the same thing with smbd, then start moving into the kexts if that doesn't go anywhere.

Similar Messages

Poor SMB performance

I appear to have very bad performance on my windows domain when logging in / logging out, and transferring files on the network - but I don't know if this problem is related to my OS X server or just a poor network.
The network is fairly small, only about 10 workstations, and I seem to have no problems transferring files between workstations. However connection to the OS X server is often slow and can be temperamental - users occasionally fail to login unless I restart the SMB service on the server.
Is it normal for me to expect less than 100% reliability for the windows domain services on OS X vs. a Windows server? Or is there a problem somewhere which I should look at in more detail?

Interesting. What were you copying from. I'm not quite sure where I stand before and after. Also, my gigabit network tranfers are from Mac to PC. I made a note that implies that I transferred about 7.154 gigabytes (as measured on my Dell) from my MBP to My Dell Desktop in about 4 minutes. So my tranfer rate was about 30 Mb ps. This value is sort of in between your before and after. When you calculated your rate did you allow for Apple's new GB measuring system--which is the way that drive manufacturers measure GB's. In not, then your after would be about 17 / 1.07 = 15.9. Either way you after looks slow. I wish I had a before.
Message was edited by: donv (The Ghost)

SMB Performance

Hello all,
I recently installed security update 2010-004 on my Leopard server. Since then, SMB performance has been slow for new connections on my Windows clients. The log file is full of this kind of thing:
[2010/07/27 14:24:04, 0, pid=33279] /SourceCache/samba/samba-187.12/samba/source/lib/opendirectory.c:opendirectoryuser_auth_and_sessionkey(679)
dsDoDirNodeAuthOnRecordType gave -14091 [eDSAuthMethodNotSupported]
[2010/07/27 14:24:04, 0, pid=33279] /SourceCache/samba/samba-187.12/samba/source/auth/authodsam.c:opendirectory_smb_pwd_checkntlmv1(383)
opendirectoryuser_auth_and_sessionkey gave -14091 [eDSAuthMethodNotSupported]
[2010/07/27 14:24:04, 1, pid=33279] /SourceCache/samba/samba-187.12/samba/source/smbd/service.c:makeconnectionsnum(1096)
*client name* (*IP address*) connect to service proofs initially as user username (uid=1038, gid=20) (pid 33279)
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Anyone have any ideas as to how I might rectify this?

Interesting. What were you copying from. I'm not quite sure where I stand before and after. Also, my gigabit network tranfers are from Mac to PC. I made a note that implies that I transferred about 7.154 gigabytes (as measured on my Dell) from my MBP to My Dell Desktop in about 4 minutes. So my tranfer rate was about 30 Mb ps. This value is sort of in between your before and after. When you calculated your rate did you allow for Apple's new GB measuring system--which is the way that drive manufacturers measure GB's. In not, then your after would be about 17 / 1.07 = 15.9. Either way you after looks slow. I wish I had a before.
Message was edited by: donv (The Ghost)

Poor graphics performance.

Hi.
Include your product name and specs such as processor speed, memory, and storage capacity. Please do not include your Serial Number, IMEI, MEID, or other personal information.
Macbook Pro retina (early 2013)
2.7 GHz Intel Core I7
16GB 1600 MHz DDR3
NVIDIA GeForce GT 650M 1024 MB
512 GB SSD
Provide the version numbers of your operating system and relevant applications, for example "iOS 6.0.3" or "iPhoto 9.1.2".
OS X 10.9.3 (13D65)
Describe the problem, and include any details about what seems to cause it.
My rMBP has poor graphical performance compared to other rMBP. I think there might be something wrong inside it. Appstore or Steam games for Mac (Bioshock Inf and Max Payne 3) at lowest graphical settings will give me between 5-10FPS. I think this might be weird for such a well specced computer.
List any troubleshooting steps you've already tried, or temporary fixes you've discovered.
Formatting, bootcamp with Win7, Updating to mavericks, stopping apps, Reset SMC.
Nothing has worked yet. I don't play games often, but since i first started trying a few times last year, i've noticed that it's almost impossible,

You should be getting more FPS. Do you have switched graphic card option on or off in the energy saving section?

EFI Update Fixes XP Performance ... Even with X1900

Before installing Windows XP in my Mac Pro via Boot Camp, I just wanted to make certain that the recent EFI firmware update fixes all the issues, including for Mac Pros with the X1900 video card.
Thanks,
Clark

Making it easier, and better support, and eliminating known issues; but, ALL the issues is a tall order.
Also, it is probably a lot easier to skip the BootCamp partition and just throw another small drive in.
Searching for "X1900 + Boot Camp" by date yields:
EFI Update fixes XP performance even with X1900
Mac Pro 2GHz 2GB WD Raptor/Caviar RE 320 Mac OS X (10.4.7) 2 x APC RS1500s

I have recently upgraded my ipad mini to iOS 6.0.2 and still have poor wifi performance. My 3rd generation ipad works great on the same network. I have done all the resets I can think of but nothing helps. I would not have purchased the mini had I known.

On the same wifi network, third generation ipad, iphone4s and MacBook Pro work just fine. The ipad mini often can not connect with the mail server and seems to hang a long time trying to open a web page. Had I known the mini had this kind of difficulty on wifi, I would have reconsidered my purchase. I have tried resetting the network and renewing the lease on the mini in addition. To completing the most current iOS upgrade. Still poor wifi performance. Unacceptable, in my opinion.

Yes I tried this manyfold. But did not work. Reading on, I took Tesserac's advice. Shut down router and computer.
Start router after 15 minutes and wait another 10 minutes before starting the computer.
Et voila.... everything is back in working order,
Regards form Curacao, Dutch Caribean.
Pete van Linden

How can I print to my HP OfficeJet 6500 Wireless Printer from my iPhone 4S which used to work before AirPrint printers were even available? (running Mac Lion OS, all software and HP sw updates are all performed)

How can I print to my HP OfficeJet 6500 Wireless Printer from my iPhone 4S which used to work (on prior iPhones) before AirPrint printers were even available? (running Mac Lion OS, all software and HP sw updates are all performed)
I don't get it, I read one post about why would we have to buy an AirPrint Printer when we have used the "print to a wifi printer" just fine in the past? Yes I feel that's exactly what's happening to me now too. I want to print from my iPhone and iPad to my WiFi Printer which is also now connected to my Airport Express WiFi network just fine. No problems.

Very glad you added that bit of information because I see different problems similar to this. I want to share with them what you did and hopefully you not only fixed your specific problem but you can lend some more advice to others with problems like this. Thanks!
Don't forgot to say thanks by giving "Kudos" if I helped solve your problem.
When a solution is found please mark the post that solves your issue.
Every problem has a solution!

[SOLVED] Poor 2D performance of Radeon 7200 with newest xf86-video-ati

Today arrived new version (6.12.99) of ATI OSS driver (also new version of ati-dri 7.6, mesa 7.6 and xorg-server 1.7.1) Since that moment I'm experiencing poor 2D performance, especially in GIMP (scrooling of zoomed canvas). Also switching of virt. desktop where is bloated Java app. or fat Firefox instance result in poor render of screen (program renders by parts/semiwindows).
Here is some relevant infoozzzz:
lspci
02:00.0 VGA compatible controller: ATI Technologies Inc Radeon R100 QD [Radeon 7200]
pacman -Syu
[2009-11-02 08:52] synchronizing package lists
[2009-11-02 08:53] starting full system upgrade
[2009-11-02 09:00] removed gnome-mount (0.8-1)
[2009-11-02 09:00] upgraded libdrm (2.4.13-1 -> 2.4.15-1)
[2009-11-02 09:00] upgraded libx11 (1.2.2-1 -> 1.3.2-1)
[2009-11-02 09:00] upgraded xextproto (7.0.5-1 -> 7.1.1-1)
[2009-11-02 09:00] upgraded libxext (1.0.5-2 -> 1.1.1-1)
[2009-11-02 09:00] upgraded libxxf86vm (1.0.99.1-1 -> 1.1.0-1)
[2009-11-02 09:00] upgraded fixesproto (4.0-3 -> 4.1.1-1)
[2009-11-02 09:00] upgraded libxfixes (4.0.3-2 -> 4.0.4-1)
[2009-11-02 09:00] upgraded libxdamage (1.1.1-2 -> 1.1.2-1)
[2009-11-02 09:00] upgraded libgl (7.5.1-2 -> 7.6-2)
[2009-11-02 09:00] upgraded ati-dri (7.5.1-2 -> 7.6-2)
[2009-11-02 09:00] upgraded bash (4.0.033-1 -> 4.0.035-1)
[2009-11-02 09:00] upgraded dbus-glib (0.82-1 -> 0.82-2)
[2009-11-02 09:00] upgraded gstreamer0.10 (0.10.24-1 -> 0.10.25-1)
[2009-11-02 09:00] upgraded libxv (1.0.4-1 -> 1.0.5-1)
[2009-11-02 09:00] upgraded gstreamer0.10-base (0.10.24-1 -> 0.10.25-1)
[2009-11-02 09:00] upgraded libtheora (1.0-1 -> 1.1.1-1)
[2009-11-02 09:00] upgraded gstreamer0.10-base-plugins (0.10.24-1 -> 0.10.25-1)
[2009-11-02 09:00] upgraded gstreamer0.10-python (0.10.16-1 -> 0.10.17-1)
[2009-11-02 09:00] upgraded exaile (0.3.0.1-2 -> 0.3.0.1-3)
[2009-11-02 09:00] upgraded libxt (1.0.6-1 -> 1.0.7-1)
[2009-11-02 09:00] upgraded xulrunner (1.9.1.3-2 -> 1.9.1.4-1)
[2009-11-02 09:00] upgraded firefox (3.5.3-1 -> 3.5.4-1)
[2009-11-02 09:00] upgraded gnome-disk-utility (2.28.0-1 -> 2.28.0-2)
[2009-11-02 09:00] upgraded gnutls (2.8.3-1 -> 2.8.4-1)
[2009-11-02 09:00] upgraded gstreamer0.10-ffmpeg (0.10.8-1 -> 0.10.9-1)
[2009-11-02 09:00] upgraded inputproto (1.5.1-2 -> 2.0-1)
[2009-11-02 09:00] upgraded kernel-headers (2.6.31.4-1 -> 2.6.31.4-2)
[2009-11-02 09:00] upgraded libatasmart (0.16-1 -> 0.17-1)
[2009-11-02 09:00] upgraded libdmx (1.0.99.1-1 -> 1.1.0-1)
[2009-11-02 09:00] upgraded libgksu (2.0.8-1 -> 2.0.12-1)
[2009-11-02 09:00] upgraded libgphoto2 (2.4.6-3 -> 2.4.7-1)
[2009-11-02 09:00] upgraded libgsf (1.14.15-1 -> 1.14.16-1)
[2009-11-02 09:00] upgraded libldap (2.4.18-1 -> 2.4.19-1)
[2009-11-02 09:00] upgraded libmpcdec (1.2.6-1 -> 1.2.6-2)
[2009-11-02 09:00] upgraded libsexy (0.1.11-1 -> 0.1.11-2)
[2009-11-02 09:00] upgraded libusb1 (1.0.1-1 -> 1.0.3-1)
[2009-11-02 09:00] upgraded libxmu (1.0.4-2 -> 1.0.5-1)
[2009-11-02 09:00] upgraded libxpm (3.5.7-2 -> 3.5.8-1)
[2009-11-02 09:00] upgraded libxaw (1.0.6-1 -> 1.0.7-1)
[2009-11-02 09:00] upgraded libxcomposite (0.4.0-2 -> 0.4.1-1)
[2009-11-02 09:00] upgraded libxdmcp (1.0.2-2 -> 1.0.3-1)
[2009-11-02 09:00] upgraded libxfont (1.4.0-1 -> 1.4.1-1)
[2009-11-02 09:00] upgraded libxfontcache (1.0.4-2 -> 1.0.5-1)
[2009-11-02 09:00] upgraded renderproto (0.9.3-2 -> 0.11-1)
[2009-11-02 09:00] upgraded libxrender (0.9.4-2 -> 0.9.5-1)
[2009-11-02 09:00] upgraded libxft (2.1.13-1 -> 2.1.14-1)
[2009-11-02 09:00] upgraded libxi (1.2.1-1 -> 1.3-2)
[2009-11-02 09:00] upgraded libxinerama (1.0.99.1-1 -> 1.1-1)
[2009-11-02 09:00] upgraded libxkbfile (1.0.5-1 -> 1.0.6-1)
[2009-11-02 09:00] upgraded libxres (1.0.3-2 -> 1.0.4-1)
[2009-11-02 09:00] upgraded libxtst (1.0.3-2 -> 1.1.0-1)
[2009-11-02 09:00] upgraded libxvmc (1.0.4-2 -> 1.0.5-1)
[2009-11-02 09:00] upgraded libxxf86dga (1.1.1-0.1 -> 1.1.1-1)
[2009-11-02 09:00] upgraded libxxf86misc (1.0.1-2 -> 1.0.2-1)
[2009-11-02 09:00] upgraded mesa (7.5.1-2 -> 7.6-2)
[2009-11-02 09:00] upgraded nautilus (2.28.0-1 -> 2.28.1-1)
[2009-11-02 09:00] upgraded nspr (4.8-1 -> 4.8.2-1)
[2009-11-02 09:00] upgraded openssh (5.3p1-1 -> 5.3p1-2)
[2009-11-02 09:00] upgraded pcre (7.9-1 -> 8.00-1)
[2009-11-02 09:00] upgraded sg3_utils (1.27-2 -> 1.28-1)
[2009-11-02 09:01] upgraded shared-mime-info (0.70-1 -> 0.70-2)
[2009-11-02 09:01] upgraded tightvnc (1.3.10-2 -> 1.3.10-3)
[2009-11-02 09:01] upgraded virtualbox-modules (3.0.8-1 -> 3.0.10-1)
[2009-11-02 09:01] upgraded virtualbox-ose (3.0.8-1 -> 3.0.10-1)
[2009-11-02 09:01] upgraded vte (0.22.2-1 -> 0.22.3-1)
[2009-11-02 09:01] upgraded xf86-input-evdev (2.2.5-1 -> 2.3.0-1)
[2009-11-02 09:01] upgraded xf86-video-ati (6.12.4-1 -> 6.12.99.git20091014-1)
[2009-11-02 09:01] upgraded xf86-video-vesa (2.2.0-1 -> 2.2.1-1)
[2009-11-02 09:01] upgraded xorg-apps (7.5-1.1 -> 7.5-2)
[2009-11-02 09:01] upgraded xorg-font-utils (7.4-3 -> 7.5-2)
[2009-11-02 09:01] upgraded xorg-fonts-alias (1.0.1-2 -> 1.0.2-1)
[2009-11-02 09:01] Regenerating font encodings... done.
[2009-11-02 09:01] upgraded xorg-fonts-encodings (1.0.2-3 -> 1.0.3-1)
[2009-11-02 09:01] upgraded xorg-server-utils (7.4-7 -> 7.5-3)
[2009-11-02 09:01] upgraded xorg-server (1.6.3.901-1 -> 1.7.1-1)
[2009-11-02 09:01] upgraded xorg-utils (7.4-4 -> 7.5-1)
[2009-11-02 09:01] upgraded xorg-xauth (1.0.3-1 -> 1.0.4-1)
[2009-11-02 09:01] upgraded xorg-xkb-utils (7.4-2 -> 7.5-1)
[2009-11-02 09:01] upgraded xterm (246-1 -> 250-1)
cat /etc/X11/xorg.conf
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts/misc"
FontPath "/usr/share/fonts/100dpi:unscaled"
FontPath "/usr/share/fonts/75dpi:unscaled"
FontPath "/usr/share/fonts/TTF"
FontPath "/usr/share/fonts/Type1"
EndSection
Section "Module"
Load "glx"
Load "dri"
Load "drm"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "LTN"
ModelName "H1996NSL/PNST"
HorizSync 30.0 - 96.0
VertRefresh 50.0 - 160.0
Option "DPMS"
EndSection
Section "Device"
#Option "NoAccel" # [<bool>]
#Option "SWcursor" # [<bool>]
Option "AGPMode" "4" # 
#Option "AGPFastWrite" # [<bool>]
#Option "AGPSize" # 
#Option "GARTSize" # 
#Option "RingSize" # 
#Option "BufferSize" # 
#Option "EnableDepthMoves" # [<bool>]
Option "EnablePageFlip" "on" # [<bool>]
#Option "NoBackBuffer" # [<bool>]
#Option "DMAForXv" # [<bool>]
#Option "FBTexPercent" # 
#Option "DepthBits" # 
#Option "PCIAPERSize" # 
#Option "AccelDFS" # [<bool>]
#Option "IgnoreEDID" # [<bool>]
#Option "DisplayPriority" # [<str>]
#Option "PanelSize" # [<str>]
#Option "ForceMinDotClock" # <freq>
Option "ColorTiling" "on" # [<bool>]
#Option "VideoKey" # 
#Option "RageTheatreCrystal" # 
#Option "RageTheatreTunerPort" # 
#Option "RageTheatreCompositePort" # 
#Option "RageTheatreSVideoPort" # 
#Option "TunerType" # 
#Option "RageTheatreMicrocPath" # <str>
#Option "RageTheatreMicrocType" # <str>
#Option "ScalerWidth" # 
Option "RenderAccel" "on" # [<bool>]
#Option "SubPixelOrder" # [<str>]
#Option "ShowCache" # [<bool>]
#Option "DynamicClocks" # [<bool>]
#Option "VGAAccess" # [<bool>]
#Option "ReverseDDC" # [<bool>]
#Option "LVDSProbePLL" # [<bool>]
#Option "AccelMethod" # <str>
Option "DRI" "on" # [<bool>]
#Option "ConnectorTable" # <str>
#Option "Int10" # [<bool>]
#Option "EXAVSync" # [<bool>]
Identifier "Card0"
Driver "radeon"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024"
EndSubSection
EndSection
Section "DRI"
Group "video"
Mode 0666
EndSection
glxinfo
http://pastebin.com/f71f5461c
BTW I'm not using Compiz. Has anyone an idea what could happen? In Glxgears I'm achieving 1200fps, but working with GIMP is laggy-horror.
THX.
Last edited by Srigi (2009-11-04 07:27:45)

exactly the same here...
01:00.0 VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon 9600 M10]
glxinfo: http://pastebin.com/m75fc2c9
Xorg.0.log: http://pastebin.com/m267826b1
xorg.conf: http://pastebin.com/m75c033c2
greets,
smax

Poor Bluetooth performance with all aluminum Mac Pro

The all aluminum case for pre-mavericks Mac Pro is the primary reason for poor antenna performance of Bluetooth. Aluminum, being a good conductor, acts as a reflector of EMF forming what is known as a Faraday Cage, essentially trapping emissions within the box. Normally, holes drilled in the case would allow enough EMF to pass through the case but the hole size for transmission is directly proportional to the lowest frequency that will pass through easily. An example is the typical microwave oven where the window is actually a conducting sheet with small enough hole such that higher freq light waves pass easily through the sheet but lower frequency microwaves do not. Perhaps if the drive bay covers were made of plastic, transmission of the Bluetooth and wifi would be sufficient. One might carefully nibble a slot or two in the side door but this would surely invalidate any warranty and care would have to be taken not to get aluminum particles inside the computer. This would probably nullify any FCC approval of the machine due to clocking noise interference with other devices. The best approach would probably be a tuned waveguide that passes frequencies only around 2.4 GHz ~ 5 GHz through the case (very similar to the way tuned ports on audio speakers pass a band of frequencies needed to extend bass response). I'm sure Apple will have corrected this design flaw in the new Mac Pro introduced this year. If you have lots of time on your hands you can get a college level text on electromagnetics (Maxwell's Equations, etc.) and derive all the details but with a bit of experimenting and reading about tin can antenna mods to wireless routers you should be able to improve Bluetooth performance significantly.

Thanks for the suggestion. I will have to move my wireless home base station. It is on the same desk as my mini so much less than 5 feet away.

Poor 3G performance from Hutchinson 3 Service Provide at HK

any Hong Kong 3G iphone users experiencing poor 3G performance on Hutchinson 3 network? test my 3G iphone against original EDGE iphone at same spot on office floor, browsing to www.yahoo.com and the performance was marginally quicker than EDGE. after calling our service provide, being told that we were capped on network bandwidth of 7.2mbps but the real speed testing was around 0.3mbps.... this is unacceptable performance.
Apple - please speak to vendor, this is making your product look BAD.

Hi Welcome to the community forums
Here is a basic guide to getting help from the community members done by CL Keith Please read through the link posted http://forumhelp.dyndns.info/speed/first_steps.html
once you have posted the information asked for then the community members can help you more
Thank You
This is a customer to customer self help forum the only BT presence here are the forum moderators
If you want to say thanks for a helpful answer,please click on the Ratings star on the left-hand side If the reply answers your question then please mark as ’Mark as Accepted Solution’

IPhone 4S Poor Battery Performance SOLVED!!

iPhone 4S Poor Battery Performance SOLVED!!
I found the issue with the iPhone 4S battery performance.
I bought 2 iPhone 4S models on the first day. One for my wife and one for me. The strange thing was that mine would kill the battery in 4-6 hours and ran VERY WARM to the touch. My wife's phone worked great. It was cold to the touch. She would forget to charge it at night... and the battery performance was great... even better than our prior 3GS models.
What was the difference? I have my phone connected to Exchange for my corporate email. But exchange is not exactly the problem. The issue is in Notification Center. For some reason, I had hundreds of calendar reminders that kept refreshing on notification center. Furthermore, the reminders would flicker between the time remaining and the start time for the event at such a fast rate that it could not be read... (clearly a bug)
What is the solution? Go to Settings>Notifications>Calendar and disable Notification Center. You can still have the "alert style" set to Banners, or Alerts and you will still receive notices about your events, but it will not BUILD a summary in the Notification Center drop down screen. This is where the BUG exists. [Oddly, this does not affect my iPad 2, but is an issue for iOS 5 on the iPhone (different builds, maybe?)]
So, it appears that Notification Center has an endless loop in collecting the calendar events from Exchange and this is burning up our 4S batteries. Once you stop the madness from Notification Center, your iPhone 4S will perform as advertised.
Enjoy!
Tim

TimothyW wrote:
iPhone 4S Poor Battery Performance SOLVED!!
I found the issue with the iPhone 4S battery performance.
I bought 2 iPhone 4S models on the first day. One for my wife and one for me. The strange thing was that mine would kill the battery in 4-6 hours and ran VERY WARM to the touch. My wife's phone worked great. It was cold to the touch. She would forget to charge it at night... and the battery performance was great... even better than our prior 3GS models.
What was the difference? I have my phone connected to Exchange for my corporate email. But exchange is not exactly the problem. The issue is in Notification Center. For some reason, I had hundreds of calendar reminders that kept refreshing on notification center. Furthermore, the reminders would flicker between the time remaining and the start time for the event at such a fast rate that it could not be read... (clearly a bug)
What is the solution? Go to Settings>Notifications>Calendar and disable Notification Center. You can still have the "alert style" set to Banners, or Alerts and you will still receive notices about your events, but it will not BUILD a summary in the Notification Center drop down screen. This is where the BUG exists. [Oddly, this does not affect my iPad 2, but is an issue for iOS 5 on the iPhone (different builds, maybe?)]
So, it appears that Notification Center has an endless loop in collecting the calendar events from Exchange and this is burning up our 4S batteries. Once you stop the madness from Notification Center, your iPhone 4S will perform as advertised.
Enjoy!
Tim
Check this out. They are stumpped:
http://www.guardian.co.uk/technology/2011/oct/28/iphone-4s-battery-apple-enginee rs

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Best Regards,
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Sorry but what kind of problem do you mean exactly? Is the sound not loud enough or what?
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Jay Roble
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The source table has an index on the timestamp field that the extractor uses in it's delta loads.
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Not sure why the extractor can't just deliver the 14K aggregated rows vs. 400K.
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Something seems to be limiting my read performance with a SSD installed. Running Windows 7 (64-bit), with the latest BIOS, Intel Driver INF and SSD Toolbox (for TRIM). Drive is Intel X25-M G2 80GB, spec-ed at ~250MB/s for sequential writes. Benchmarks tested include HD Tune, HD Tach, ATTO, Datamarck and DiskMark. All show around 55MB/s sequential read with W7 resource monitor confirming that throughput.
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Hi doasc,
I just re-imaged my 8510w to Windows 7 onto a Kingston SSDNow V Series 128 GB drive.
I was quite silly and did not run HD Tune before enabling the employer mandated McAfee Endpoint Encryption whole disk encryption.
I get 60MB/sec in HD Tune with the disk encrypted - and you are likely quite correct about getting better results without disk encryption enabled and I wish I had tested it that way first.
/dan

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