Very poor 802.11n performance

I'm having difficulties with my time capsule. The performance seems very erratic. Due to me having also having a powerbook I've so far run it in compatible mode.
But the many problems regarding signal strength and a stable throughput struggling to keep above 485 kb/s prompted me to move the Time Capsule closer to the Powerbook so I could hook it up via cable and completely switch to 802.11n 5ghz, connceting the other computers wirelessly.
Unfortunately, it doesn't work. The performance is laughable, I get a mere 5000 kb/s down (internet based test) whereas I normally (2.4 ghz n/b/g compatibel) i get just under 2 MB/s.
Sending files to and from a connected harddrive is also very very very slow.
What is wrong with the Time Capsule? Is it interference from the (bastards) around me that all have their routers setup to automatically chose channel?
Is my time capsule broken? Is my computer broken? What is wrong?
I'm close to returning the device.

I've just completed an experiment.
Two iMacs side-by-side. One with Airport Utility 5.4.1 ("new"), second with Airport Utility 5.3.1 ("old"). Time Capsule with firmware 7.4.1.
Initial tests for connection Rate:
"New" average about 122
"Old" average about 232 (about twice the Rate)
Installed Airport Utility 5.4.1 on "old" iMac.
New tests for connection Rate:
Both averaging about 116
To me this suggests an effect of the "upgrade" to 5.4.1. But could this be the case? I'm not going to downgrade the firmware quite yet until I rule this and any interference issues out.

Similar Messages

Very slow 802.11n. 20" iMac, Vista, Broadcom, Belkin N1

I've been trying to get some drivers working with Windows Vista. I'll post the results I've been having and maybe someone can assist.
I have a 20" brand new iMac with Leopard running bootcamp windows vista ultimate. When I connect to a Belkin Pre-N wireless router I get 802.11g wireless speeds(expected) of about 36mb/s (it's a good distance away, 2 bars).
I have another wireless router Belkin N1 wireless and I get differing wireless speeds/connectivity depending on what drivers I use. I have 5 full bars and an "excellent" connection rating for it.
I understand that the specifications for 802.11n that both belkin and apple use are based on draft specifications and may not be compatible.
The drivers on the leopard disk are marked as 4.80.75.0. I can connect using those and use the internet. But at very, very slow speeds (27.0 mb/s Broadband tests show .5% of normal speeds for my provider, a wired connection will get 105.8% of normal speeds for my provider.)
I got some other drivers that were posted by other users at the following location
(http://www.versiontracker.com/php/dlpage.php?id=115683&db=win&pid=149836&kind=&l nk=ftp%3A%2F%2Fftp.support.acer-euro.com%2Fnotebook%2Ftravelmate_2480%2Fvista%2F Drivers%2F802.11b%2BgBroadcom+Wireless+Lan+Driver4.102.15.61.zip)
Those drivers are marked as 4.102.15.61. It will connect 1 out of 7 tries at 270mb/s but will disconnect after a few seconds.
There are some other drivers posted by another user at the following location:
http://discussions.apple.com/thread.jspa?threadID=1309942&tstart=0
These are marked as 4.150.31.0. Same issue as the ones on the leopard disk. I get connectivity, but at very slow speeds.
I believe I have the most up to date firmware for my router but will check that and post on the message board some results. Another option that I have is to completely disable the 802.11n protocol on the router and just use 802.11g.
Does anyone know any other drivers out there that I could try? I will post findings. Again this is only a problem while trying to connect to a Belkin N1 wireless router. I get much better speeds/connection using a Belkin Pre-N router.

I have a 24" Core 2 Duo iMac (2.4 GHz, 4 GB RAM) running Leopard and an Apple Airport Extreme base station, and am having the same problem with slow wireless speed under Vista Ultimate edition with Boot Camp. All Vista software updates as of March 11, 2008 have been applied.
I've reinstalled the driver from the Leopard disk (no effect) and updated the driver directly in Windows, using the one that Windows detects automatically (no effect). Under OS X, I get close to optimal bandwidth over the 802.11n connection to my cable modem. The Airport Extreme is set to use 5 GHz only and does not use the 802.11g-compatibility mode.
When I use a wired connection to my gigabit Ethernet switch, everything is fine.
Message was edited by: jeffkirk

Very poor SMB share performance on 3TB time capsule.

Hi,
Is the SMB shares performance on time capsule suposed to be very poor compared to the AFP shares?
My TC will to around 9MB/s transfers using AFP, but on SMB it will do around 1.25MB/s (varies from a few KB/s to peaks of 4MB/s).
I tested both protocols using a ethernet cable connected from my macbook pro directly to the TC.
This is a 3TB time capsule runing firmware 7.6.1, and I did a factory reset before my tests.
Time machine backups were disabled during the tests.
I need SMB for my WDTV media players.

I would not say it is supposed to be.. but you are probably correct that it is very poor.. This issue crops up time and again,,, but not from people running Macs generally.. it is windows that is the problem.
A few things to check.
1. Are the names actually SMB correct?? ie short, no spaces, pure alphanumeric. Both TC name and wireless names if you use wireless.
2. Workgroup set correctly. ie WORKGROUP .. this probably doesn't come up with the Mac but affects most PC connections and possibly the WD TV
3. How old is the TC? If it is an early release Gen 4, you can take it back to 7.5.2 firmware.. frankly much of the trouble was introduced with Lion.. as they changed the SAMBA setup.. I would test from the WDTV.. or a PC.. if it doesn't glitch you are doing better than the Mac can do.. ie the reading in the Mac is pure Lion Lunacy.. https://discussions.apple.com/thread/3206668?start=0&tstart=0
One of those apple changes that shows.. they hardly test anything anymore. Do a google search for Lion SMB fix.

Very poor Random IO performance of 24 HDD Mirror-2 CSV on Win2012 R2 (Solved)

We already have a 2 separate Win2012 Mirror-2 Storage Clusters (in production) and had noted that performance was very poor.
We were looking to upgrade to Win2012R2 and storage tiering, we wanted to understand why the storage systems were performing so poorly. So, we have not built out a new storage cluster, with 2 nodes, 3 JBODs and 24 x2TB Seagate ES2 SAS drives.
We have run IOMeter to measure IOPs and the numbers are very poor, regardless of the 'geometries' we choose. Our Write IOPs results for 16KB block (this our typical DB page size) are:
2 columns, 64KB Interleave = 1043
2 columns, 256KB Interleave = 1176
4 columns, 64KB Interleave = 1424
4 columns, 256KB Interleave = 1688
8 columns, 256KB Interleave = 1677
We only tested Write IO because this should be the slowest/worse case IOPs values.
We also tested each HDD individually and they range between 270 and 330 IOPs.
By our math, the IOPs values should be in the range of 3000-3600 == 24 HDDs x IOPs/HDD div by 2 [for mirror-2], but the tested are showing values which are barely 50% of this.
Any assistance/tips would be appreciated.

We already have a 2 separate Win2012 Mirror-2 Storage Clusters (in production) and had noted that performance was very poor.
We were looking to upgrade to Win2012R2 and storage tiering, we wanted to understand why the storage systems were performing so poorly. So, we have not built out a new storage cluster, with 2 nodes, 3 JBODs and 24 x2TB Seagate ES2 SAS drives.
We have run IOMeter to measure IOPs and the numbers are very poor, regardless of the 'geometries' we choose. Our Write IOPs results for 16KB block (this our typical DB page size) are:
2 columns, 64KB Interleave = 1043
2 columns, 256KB Interleave = 1176
4 columns, 64KB Interleave = 1424
4 columns, 256KB Interleave = 1688
8 columns, 256KB Interleave = 1677
We only tested Write IO because this should be the slowest/worse case IOPs values.
We also tested each HDD individually and they range between 270 and 330 IOPs.
By our math, the IOPs values should be in the range of 3000-3600 == 24 HDDs x IOPs/HDD div by 2 [for mirror-2], but the tested are showing values which are barely 50% of this.
Any assistance/tips would be appreciated.
16KB I/Os never touch the whole RAID stripe so that's why you see virtually never performance increase (I;m surprised you actually see any). Try using bigger request size to see would it make any difference. You need multiple workers and deep I/O queues.
What are you I/O Meter settings for test except write size?
StarWind VSAN [Virtual SAN] clusters Hyper-V without SAS, Fibre Channel, SMB 3.0 or iSCSI, uses Ethernet to mirror internally mounted SATA disks between hosts.

Very Poor Final Cut Performance

We just upgraded to a Final Cut system from an older Avid system, but it seems to be performing well below expectations. If anyone could make suggestions, they would be greatly appreciated.
Syptoms:
- Dropping frames on virtually every application, from mere audio to standard def.
- a weird flicker when playback stops (the screen goes black then refreshes with expected picture)
- choppy edges on resized windows. (Real-time but it doesn't ask for a render)
- Difference in color between paused video and playing video. (The playback appears to be the "correct" color)
Explination of system:
Apple G5 running mac os 10.4.3
Dual 2.3 Ghz Processor
2.5 gigs memory
ATI X850XT Video Card
Blackmagic's Decklink HD Pro
Blackmagic's HD Link
Final Cut Studio (Final Cut Pro 5)
The boot drive is an internal SATA 250 Gig Drive. This is where the Final Cut Application is.
Our scratch disk is a RAID using 6 external SATA drives controlled by a Tempo card. A Blackmagic Speed test returned 377 MB/sec read and 376 MB/sec write on these drives, so I don't think it's a bandwith issue. Drives are formatted without Journalling enabled.
All drives are new, optimized, and have been verified by Diskwarrior and Apple's Disk Utility.
I have also checked that each of the High performance PCI cards is in the right slot to optimize performance.
Things I've thought about but would like some input-
Is there a software cap that I haven't turned off?
Do I need to set up the Final Cut Application on the RAID Drive? (For quicker access to, say, preference files)
Could this be a symptom of a corrupt preference file?
Powermac G5 Dual 2.3 Ghz Mac OS X (10.4.3)

Welcome to the Forum.
I am sure you will be able to work at full throttle very soon. If my suggestion does not help I am sure someone will recognize your issue.
My suggestion is based on seeing pretty much what you describe in someone else's system and so I am offering the fix that worked.
The scenario you describe may reflect the operation of another application that is as hungry for "bandwith" and space as FCP. If you haven't, try turning Spotlight off. I also suggest that you trash the FCP preferences and repair permissions The last two can do no harm.

E900 - Poor 802.11b Performance and set up tool

I've been a long time NetGear user and networker but after my second NetGear wireless router gave up the ghost I decided that it was time for a change to another manufacturer. Cisco is the biggest game in town, and now that they own Linksys I thought maybe they were worth a try. The E900 got pretty good reviews here on Amazon and it was available for $40 at WalMart, so I thought "Why not?"
I used the CD to run the Setup program, which seemed to work OK on my MacBook. But it's not at all clear as to what settings are being configured, so I went into the web interface to see what was going on. The interface isn't as clear or well organized as the NetGear one, and help is displayed in a separate web page which makes it challenging to read about the settings while viewing the configuration interface. That can be worked around by opening two web browsers, but that's not the biggest problem.
The Setup program and the web interface don't interact well, and somehow the Setup program software got corrupted so that the Macbook hung and would no longer boot from the internal hard drive on which the Cisco tools were installed. It took removing the Cisco directory from the /System/Application Support director on the MacBook to restore booting. I won't be using the Cisco tools anymore. As an added bonus, using the web interface I can set a WPA passphrase that is separate and distinct from the router login password, something that doesn't seem possible using the Cisco tool.
Once over these hurdles, the problems continue. I use an old PowerBook G4 in a spare bedroom that has an internal 802.11b wireless interface, and while the signal to it is strong, it has problems using the channel. Some URLs work fine, but any secure (https) connections timeout without connecting. Some regular (http) connections, such as google.com, won't load, either. Installing an 802.11g card in the laptop don't improve matters at all. The wireless interface in the iPhone 4S seems to work just fine, so I'm guessing it's something to do with older technology in the G4 that Linksys has decided to no longer support. I wasted most of a morning trying to get this to work but was unsuccessful. And without reliable wireless performance, what's the point of having a wireless router? This one goes back to WalMart, and I'll keep shopping for something better.

Linksys/Cisco E900 router has been launched recently. The Cisco Connect software is a step-by-step setup wizard that will have your computer connected wirelessly in minutes. Cisco Connect offers powerful tools for managing your wireless network such as Security Settings, Guest Access, Parental Controls and Advanced Settings. Installation of the Cisco Connect software is through the Setup CD included with every Linksys Wireless-N E- series router. Once installed, software and firmware updates would be a breeze with its automatic upgrade detect feature. The Graphical User Interface (GUI) is bit different from other router’s Interface.
But yes, if the Cisco Connect software gets corrupted from the computer then in that case to reinstall the Cisco Connect you need to uninstall the existing one. You have an added advantage of using WPA2/WPA mixed-mode which supports two encryption methods at the same time: WPA2-Personal with AES encryption and WPA-Personal with TKIP encryption, with a shared dynamic encryption key.
If you are facing problems with some of your websites which does not loads up. Then this issue could be caused by any of the below possibilities.
Web site down or other web page error.
Malware or other security settings blocking address.
Your IP address is blocked by the web site.
Issue with DNS servers or ISP.
Else here is the link encountering difficulties accessing some websites when connected to a router: http://www6.nohold.net/Cisco2/ukp.aspx?pid=93&login=1&vw=1&app=search&articleid=3982&userrole=Linksy...

Very poor video podcast performance

Computer is older (P3/1000, ATI 9550 video@1280x1024, Win2K, Quicktime 7.1.5.) Yes, I am looking at getting a new computer this summer, after some of the Vista issues are more settled.
I am having major issues trying to play simple video podcasts. Most of these are only 128K, such as Vintage Toons. Playing them results in 90%+ CPU, and only if I keep it original size and only play it directly in Quicktime player or RealPlayer. Playing them in iTunes is impossible, as iTunes itself is a major CPU hog. Doing most anything causes the video to freeze and sputter and even disappear. RealPlayer works best (I can even move the video around while playing without it stopping!) I can't play anything full-screen cleanly.
Quicktime is set to use DirectX, and Windows and DirectX are up to date. The video drivers are Catalyst 5.8. I don't think there is anything in the newer Catalyst drivers that will do much for an entry-level card like this.
This seems to have gotten MUCH worse with the latest iTunes/Quicktime upgrade.
I can play much higher bitrate (1M+) Windows Media files with few if any glitches.
Windows 2000

Most new QuickTime files use H.264 Video codec which cause a strain on older machines and graphic cards (and drivers).
Not much you can do except upgrade your machine.
You may be able to mitigate performance issues by setting QuickTime Preferences to not use DirectX (QuickTime Control Panel).

Macbook refuses to use 802.11n?

I have an 802.11n router, running in MIMO mode with WPA2/AES encryption, with only two machines attempting to connect to it. Both are running OSX 10.6.5:
My macbook air 1.6GHz (December 2010). This machine connects perfectly as 802.11n, every time.
My wife's 2GHz Macbook 2,1 (I think somewhere around mid-2007 manufacture). This machine has the n extension installed (I can't recall installing it, but network utility shows it as 802.11 a/b/g/n). Whenever I attempt to connect with this machine, connection initially fails, but it eventually connects as an 802.11g connection (as shown by option-clicking on the network icon). When it does connect - not very well - it slows the connection of the macbook air way down.
I'm guessing that if I could force my wife's machine to connect in n mode, everything would be OK. Does anyone have any suggestions?
What I've tried so far:
.deleting and re-enabling the wireless drivers in the network preferences panel
.making a new network location
.deleting all relevant plists
.repairing disk permissions
Relevant background information:
.the 'n' router only supports channels 1-12 (i.e. we can't force n by using non-g channels)
.this network is in a crowded apartment block - I can see around a dozen other networks in istumbler
.the router is using directional paired (MIMO) antennas to bounce the signal from one apartment to another off an adjoining building. Of course, this could in general be problematic; but the received signal strength is OK - not good - according to both istumbler and a separate linux metering program. And the MBA works perfectly well in the same locations.
.it's using channel 1; there are two g networks in the building also using channel 1, but according to istumbler, our signal is strongest of the three in the 'receiving' apartment (in channels 6 and 11, there are other stronger signals, so 1 is the only rational choice).
.the router is running in mixed, not greenfields, mode
.although the MB is only able to connect in g mode, istumbler on the MB still shows it as an 'n' network
.we have never encountered any previous wifi problems with the MB (but this is the first time we've tried to connect it to an n router)
.and just to repeat, the router is using WPA2/AES encryption, which should be compatible with 802.11n
TIA for any help

SOLVED!
Who in the world would have guessed??
Trendnet support provided this information:
<<Note: Due to chipset compatibility issues, if you choose WEP, WPA or WPA2-TKIP encryption this device may operate in Legacy Wireless mode (802.11b/g). You may not get 802.11n performance as these forms of encryption are not supported by the 802.11n specification. >>
I had used WPS2-TKIP, just by accident. I changed it to Authentication WPA-Auto and Cypher type auto, and now it works on 802.11n, as well as g!! Even on my Powerbook G3 and HP laptop.
Who would have guessed?

How to get 802.11n speed for Apple TV?

I installed my first Apple TV yesterday. Great stuff!
My iTunes movie library is on a Core 2 Duo MacBook Pro. I have not yet used the AirPort Extreme 802.11n Enabler on this MacBook, since I just found out it exists. If I use it, can I utilize 802.11n sync speeds with the Apple TV? How?
My AirPort network uses only an "old" 802.11g AirPort Extreme base station, not the "new" AirPort Extreme base station with 802.11n.
I have three 802.11g AirPort Express base stations on my network, mainly for using AirTunes.
My iMac connects to my wireless network using 802.11g, and I don't think the 802.11n Enabler works with it.
My cable modem current connects to my Airport Extreme (802.11g) base station via Ethernet.
I understand I can get a new AirPort Extreme 802.11n base station to replace the 802.11g one, and that would let me use the higher 802.11n speed from the MacBook to the Apple TV. It would also allow (unless I misunderstand) all my 802.11g devices to access the network at the lower speeds they are capable of. Correct?
I also understand there is something called a "dual band network" that involves using both base station types in one large network, but I don't know what the advantage of doing that would be, compared with just replacing the old base station. Can someone fill me in on that?
And, is there any way to get 802.11n speeds from the MacBook Pro to the Apple TV without getting an 802.11n base station?
Thanks in advance.

If I use it, can I utilize 802.11n sync speeds with the Apple TV? How?
And, is there any way to get 802.11n speeds from the MacBook Pro to the Apple TV without getting an 802.11n base station?
No. Unless you set up an adhoc network between your Mac and the Apple TV.
I understand I can get a new AirPort Extreme 802.11n base > station to replace the 802.11g one, and that would let me > use the higher 802.11n speed from the MacBook to the Apple > TV.
Yes, it would.
It would also allow (unless I misunderstand) all my 802.11g devices to access the network at the lower speeds they are capable of. Correct?
If you set things up this way, then I believe you wont be able to use wideband mode on the AEBSn. Your AEBSn will be opperating in mixed mode and its 802.11n performance will be degraded. The best set up would be to keep your old router to service the G only devices, and have your new AEBSn service the N capable devices. This would allow you to take full advantage of the performance increase provided by 802.11n capable devices.
Message was edited by: ctomer

Configure standalone 1250 AP to support 802.11n

Been searching this forum about 802.11n setup. So far, I learned (from this forum) that to support 802.11n, I must use WPA2/AES (or open auth), and I need to ensure WMM is enable.
Q-1. Besides the above two, are there any other requirement I need to address in my configuration?
Q-2. Do I have to enable both 2.4Mhz and 5Mhz radio for 802.11n performance?
Q-3. Is there WPA2/TKIP option? If so, would this option support 802.11n? Or, it has to be WPA2/AES?
Q-4. From the command line, how can I verify if I have WMM enable?
I have read the 1250 AP Configuration guide, but I don't see specific discussion/chapter about 802.11n. If there is any good reading I can do, please let me know.
Thanks.

I will try to answer your questions:)
Q-1. Besides the above two, are there any other requirement I need to address in my configuration?
You need to configure 40mhz channel width in the AP 802.11a radio
Q-2. Do I have to enable both 2.4Mhz and 5Mhz radio for 802.11n performance?
Only enable 'N' on the 5ghz side due to only having 3 non-overlapping channels on the 2.4ghz
Q-3. Is there WPA2/TKIP option? If so, would this option support 802.11n? Or, it has to be WPA2/AES?
AES is the supported encryption standard for 802.11N.... not TKIP. WPA2/AES or OPEN is your only option
Q-4. From the command line, how can I verify if I have WMM enable?
show wlan
Issue the config wlan wmm {disabled | allowed | required} wlan-id command in order to enable WMM mode

ZBook 17 g2 - poor DPC Latency performance when running from z Turbo Drive PCIe SSD

I'm setting up a new zBook 17 g2 and am getting very poor DPC latency performance (> 6000 us) when running from the PCIe SSD. I've re-installed the OS (Win 7 64 bit) on both the PCIe SSD and a SATA HDD and the DPC latency performance is fine when running from the HDD (50 - 100 us) but horrible when running from the PCIe SSD (> 6000 us). I've updated the BIOS and tried every combination of driver and component enabling/disabling I can think of. The DPC latency is extremely high from the initial Windows install with no drivers installed. Adding drivers seems to have no effect on the DPC latency. Before purchasing the laptop I found this review: http://www.notebookcheck.net/Review-HP-ZBook-17-E9X11AA-ABA-Workstation.106222.0.html where the DPC latency measurement (middle of the page) looks OK. Of course, this is the prior version of the laptop and I believe it does not have the PCIe SSD. Combining that with the fact that I get fine performance when running from the HDD I am led to believe that the PCIe SSD is the cause of the problem. Has anyone found a solution to this problem? As it stands right now my zBook is not usable for digital audio work when running from the PCIe SSD. But it cost me a lot of money so I'd sure like to use it...! Thanks, rgames

Hi mooktank, No solution yet but, as of about six weeks ago, HP at least acknowledged that it's a problem (finally). I reproduced it perfectly on another zBook 17 g2 and another PCIe SSD in the same laptop and HP was able to reproduce the problem as well. So the problem is clearly in the BIOS or with some driver related to the PCIe SSD. It could also be with the firmware in the drive, itself, but I can't find any other PCIe drives in the 60 mm form factor. So there's no way to see if a differnt type of drive would fix the problem. My suspicion is that it's related to the PCIe sleep states - those are known to cause exactly these types of problems because the drive takes quick "naps" to save power and there's a delay when it is told to wake back up. That delay causes a delay in the audio buffer that results in pops/crackles/stutters that would never be noticed doing other tasks like video editing or CAD work . So it's a problem specific to folks who need low-latency audio performance (very few apps require low latency audio - video editing, for example, uses huge buffers with relatively high latency). A lot of desktops offer a BIOS option to disable those sleep states but no such option exists in HP's BIOS for that laptop. In theory you can do it from within Windows but it doesn't have an effect on my system. That might be one of those options that Windows allows you to change but that actually has no effect. One workaround is to disable CPU throttling. That makes the CPU run at full speed all the time and, I believe, also disables the PCIe and other sleep states. When I disable CPU throttling, DPC latency goes back to normal. However, the CPU is then running full-speed all the time so your battery life basically goes to nothing and the laptop gets *very* hot. Clearly that is not necessary because the laptop runs fine from the SATA SSD. HP needs to fix the latency problem associated with the PCIe drive. The next logical step is to provide a BIOS update that provides a way to disable the PCIe sleep states without disabling CPU throttling, like on many desktop systems. The bad news is that HP tech support is not very technical, so it takes forever for them to figure out what I'm talking about. It took a couple months for them to start using the DPC Latency checker. Hopefully there will be a fix at some point... in the meantime, I hope that HP sends me a check for spending so much time educating their techs on how computers work. And for countless hours lost re-installing different OSes only to show that the performance is exactly the same as shown in the DPC Latency checker. rgames

Macbook pro performing very poor due to Yosemite

Hi,
I bought macbook pro 2012 model just 10 days back. Unfortunately i got yosemite preinstalled. My macbook pro is performing very very poor now .. Please help me in this regard
Problem description:
Very slow performance
EtreCheck version: 2.1.5 (108)
Report generated 12 January 2015 8:06:38 pm IST
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
MacBook Pro (13-inch, Mid 2012) (Verified)
MacBook Pro - model: MacBookPro9,2
1 2.5 GHz Intel Core i5 CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1600 MHz ok
BANK 1/DIMM0
2 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 4000
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10.1 (14B25) - Uptime: 3 days 1:6:20
Disk Information: ℹ️
APPLE HDD HTS545050A7E362 disk0 : (500.11 GB)
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / : 498.89 GB (428.37 GB free)
Core Storage: disk0s2 499.25 GB Online
HL-DT-ST DVDRW GS41N
USB Information: ℹ️
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Apple Inc. FaceTime HD Camera (Built-in)
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Configuration files: ℹ️
/etc/hosts - Count: 6
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/Library/Extensions
[loaded] com.driver.LogJoystick (2.0 - SDK 10.9) [Support]
[loaded] com.logitech.driver.LogiGamingMouseFilter (1 - SDK 10.9) [Support]
Startup Items: ℹ️
MySQLCOM: Path: /Library/StartupItems/MySQLCOM
Startup items are obsolete in OS X Yosemite
Problem System Launch Agents: ℹ️
[killed] com.apple.bird.plist
[killed] com.apple.CallHistoryPluginHelper.plist
[killed] com.apple.CallHistorySyncHelper.plist
[killed] com.apple.cloudd.plist
[killed] com.apple.coreservices.appleid.authentication.plist
[killed] com.apple.EscrowSecurityAlert.plist
[killed] com.apple.icloud.fmfd.plist
[killed] com.apple.nsurlsessiond.plist
[killed] com.apple.pluginkit.pkd.plist
[killed] com.apple.rcd.plist
[killed] com.apple.recentsd.plist
[killed] com.apple.sbd.plist
[killed] com.apple.scopedbookmarkagent.xpc.plist
[killed] com.apple.security.cloudkeychainproxy.plist
[killed] com.apple.spindump_agent.plist
15 processes killed due to memory pressure
Problem System Launch Daemons: ℹ️
[killed] com.apple.AssetCacheLocatorService.plist
[killed] com.apple.awdd.plist
[killed] com.apple.corestorage.corestoragehelperd.plist
[killed] com.apple.ctkd.plist
[killed] com.apple.diagnosticd.plist
[killed] com.apple.emond.aslmanager.plist
[killed] com.apple.icloud.findmydeviced.plist
[killed] com.apple.ifdreader.plist
[killed] com.apple.nehelper.plist
[killed] com.apple.nsurlsessiond.plist
[killed] com.apple.periodic-daily.plist
[killed] com.apple.periodic-weekly.plist
[killed] com.apple.softwareupdate_download_service.plist
[killed] com.apple.spindump.plist
[killed] com.apple.systemstats.analysis.plist
[killed] com.apple.wdhelper.plist
16 processes killed due to memory pressure
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist [Support]
[not loaded] com.teamviewer.teamviewer.plist [Support]
[not loaded] com.teamviewer.teamviewer_desktop.plist [Support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Support]
[loaded] com.teamviewer.Helper.plist [Support]
[not loaded] com.teamviewer.teamviewer_service.plist [Support]
User Launch Agents: ℹ️
[loaded] com.adobe.AAM.Updater-1.0.plist [Support]
[loaded] com.google.keystone.agent.plist [Support]
[loaded] com.valvesoftware.steamclean.plist [Support]
User Login Items: ℹ️
Android File Transfer Agent Application (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
Internet Plug-ins: ℹ️
FlashPlayer-10.6: Version: 16.0.0.235 - SDK 10.6 [Support]
Flash Player: Version: 16.0.0.235 - SDK 10.6 [Support]
QuickTime Plugin: Version: 7.7.3
AdobeAAMDetect: Version: AdobeAAMDetect 1.0.0.0 - SDK 10.6 [Support]
Default Browser: Version: 600 - SDK 10.10
Safari Extensions: ℹ️
Searchme [Cached] Adware! [Remove]
3rd Party Preference Panes: ℹ️
Flash Player [Support]
MySQL [Support]
Time Machine: ℹ️
Time Machine not configured!
Top Processes by CPU: ℹ️
      5% WindowServer
      0% fontd
      0% smcFanControl
      0% AppleSpell
      0% Google Chrome
Top Processes by Memory: ℹ️
408 MB com.apple.SpeechRecognitionCore.speechrecognitiond
133 MB Google Chrome
120 MB Skype
86 MB loginwindow
77 MB Pages
Virtual Memory Information: ℹ️
51 MB Free RAM
1.30 GB Active RAM
1.22 GB Inactive RAM
773 MB Wired RAM
45.09 GB Page-ins
646 MB Page-outs
Diagnostics Information: ℹ️
Jan 12, 2015, 01:11:20 PM /Users/[redacted]/Library/Logs/DiagnosticReports/httpd_2015-01-12-131120_[redac ted].crash
Jan 12, 2015, 01:06:00 PM /Users/[redacted]/Library/Logs/DiagnosticReports/httpd_2015-01-12-130600_[redac ted].crash
Jan 11, 2015, 11:11:16 PM /Users/[redacted]/Library/Logs/DiagnosticReports/httpd_2015-01-11-231116_[redac ted].crash
Jan 11, 2015, 11:09:03 PM /Users/[redacted]/Library/Logs/DiagnosticReports/httpd_2015-01-11-230903_[redac ted].crash

Before buying a second-hand computer, you should have run Apple Diagnostics or the Apple Hardware Test, whichever is applicable.
The first thing to do after buying the computer is to erase the internal drive and install a clean copy of OS X. You—not the original owner—must do that. Changes made by Apple over the years have made this seemingly straightforward task very complex.
How you go about it depends on the model, and on whether you already own another Mac. If you're not sure of the model, enter the serial number on this page. Then find the model on this page to see what OS version was originally installed.
It's unsafe, and may be unlawful, to use a computer with software installed by a previous owner.
1. If you don't own another Mac
a. If the machine shipped with OS X 10.4 or 10.5, you need a boxed and shrink-wrapped retail Snow Leopard (OS X 10.6) installation disc from the Apple Store or a reputable reseller—not from eBay or anything of the kind. If the machine is very old and has less than 1 GB of memory, you'll need to add more in order to install 10.6. Preferably, install as much memory as it can take, according to the technical specifications.
b. If the machine shipped with OS X 10.6, you need the installation media that came with it: gray installation discs, or a USB flash drive for a MacBook Air. You should have received the media from the original owner, but if you didn't, order replacements from Apple. A retail disc, or the gray discs from another model, will not work.
To start up from an optical disc or a flash drive, insert it, then restart the computer and hold down the C key at the startup chime. Release the key when you see the gray Apple logo on the screen.
c. If the machine shipped with OS X 10.7 or later, you don't need media. It should start up in Internet Recovery mode when you hold down the key combination option-command-R at the startup chime. Release the keys when you see a spinning globe.
d. Some 2010-2011 models shipped with OS X 10.6 and received a firmware update after 10.7 was released, enabling them to use Internet Recovery. If you have one of those models, you can't reinstall 10.6 even from the original media, and Internet Recovery will not work either without the original owner's Apple ID. In that case, contact Apple Support, or take the machine to an Apple Store or another authorized service provider to have the OS installed.
2. If you do own another Mac
If you already own another Mac that was upgraded in the App Store to the version of OS X that you want to install, and if the new Mac is compatible with it, then you can install it. Use Recovery Disk Assistant to prepare a USB device, then start up the new Mac from it by holding down the C key at the startup chime. Alternatively, if you have a Time Machine backup of OS X 10.7.3 or later on an external hard drive (not a Time Capsule or other network device), you can start from that by holding down the option key and selecting it from the row of icons that appears. Note that if your other Mac was never upgraded in the App Store, you can't use this method.
3. Partition and install OS X
a. If you see a lock screen when trying to start up from installation media or in Recovery mode, then a firmware password was set by the previous owner, or the machine was remotely locked via iCloud. You'll either have to contact the owner or take the machine to an Apple Store or another service provider to be unlocked. You may be asked for proof of ownership.
b. Launch Disk Utility and select the icon of the internal drive—not any of the volume icons nested beneath it. In the Partition tab, select the default options: a GUID partition table with one data volume in Mac OS Extended (Journaled) format. This operation will permanently remove all existing data on the drive.
c. An unusual problem may arise if all the following conditions apply:
          OS X 10.7 or later was installed by the previous owner
          The startup volume was encrypted with FileVault
          You're booted in Recovery mode (that is, not from a 10.6 installation disc)
In that case, you won't be able to unlock the volume or partition the drive without the FileVault password. Ask for guidance or see this discussion.
d. After partitioning, quit Disk Utility and run the OS X Installer. If you're installing a version of OS X acquired from the App Store, you will need the Apple ID and password that you used. When the installation is done, the system will automatically restart into the Setup Assistant, which will prompt you to transfer the data from another Mac, its backups, or from a Windows computer. If you have any data to transfer, this is usually the best time to do it.
e. Run Software Update and install all available system updates from Apple. To upgrade to a major version of OS X newer than 10.6, get it from the Mac App Store. Note that you can't keep an upgraded version that was installed by the original owner. He or she can't legally transfer it to you, and without the Apple ID you won't be able to update it in Software Update or reinstall, if that becomes necessary. The same goes for any App Store products that the previous owner installed—you have to repurchase them.
4. Other issues
a. If the original owner "accepted" the bundled iLife applications (iPhoto, iMovie, and Garage Band) in the App Store so that he or she could update them, then they're irrevocably linked to that Apple ID and you won't be able to download them without buying them. Reportedly, Mac App Store Customer Service has sometimes issued redemption codes for these apps to second owners who asked.
b. If the previous owner didn't deauthorize the computer in the iTunes Store under his Apple ID, you wont be able to authorize it immediately under your ID. In that case, you'll either have to wait up to 90 days or contact iTunes Support.
c. When trying to create a new iCloud account, you might get a failure message: "Account limit reached." Apple imposes a lifetime limit of three iCloud account setups per device. Erasing the device does not reset the limit. You can still use an iCloud account that was created on another device, but you won't be able to create a new one. Contact iCloud Support for more information. The setup limit doesn't apply to Apple ID accounts used for other services, such as the iTunes and Mac App Stores, or iMessage. You can create as many of those accounts as you like.

AEBS 802.11n, TC and APXn with 7.3.1 is very flaky indeed - cant connect -

HI Guys I think many of you on these forums have posted because you are having joyless experiences with the new APX 802.11n, the AEBSn and the TC not able to be managed via the AIRPORT UTILITY.app v5.3.2 with firmware 7.3.1 in the former devices. After a search there's many of these posts with people with the same issues.
I have these devices in my place so I have had lost of experience configuring these over the years:
1 x 802.11n AEBS, 1 x TC, 1 xUFO white AEBS, 2 x APXg's and lastly the problematic 1 x APX802.11n (one subnet and 2 x networks 2.4Ghz and 5 Ghz)
I am at my wits ends trying to get the new APXn regularly responding to the AP utility.app (error reading configuration).
I have tried most of the remedies on these forums but they do not consistently solve the problems of the APX not responding to the AP utility.None of these have consistently worked:
• trying to factory reset it using the POWER ON+RESET and waiting for the amber flashes then green - butt this procedure NEVER WORKS to factory reset!
• using the reset button in any form (it doesn't do anything)
• connection through ethernet (sometimes works ).
• takes long to power up (than the older 802.11g)
• rest APXn back to factory defaults through the AP utility then ...
• downloaded 7.3 firmware - worse and wont work
• lastly I found that RESET+POWER ON then wait for 20 secs as as it powers up DEPRESS the RESET again and then it becomes readable.
Additionally, I have been unsuccessful in getting PORT FORWARDINg to work at all for the AEBS 802.11n with and without the TC in the mix. I had this working for several years with the White UFO AEBS ... It beats me.
I think the firmware is very very flaky and i have no resolutions for these recent problems.
Hope for a fix soon.
I will be polling these forums for any clues.
w

Hi Guys
REgarding the APXn's (802.11N Airport express) inability to consistently be seen by the Airport Utility.
this just worked finally for me now and have tested this 7 times and all seems ok now..
Simply: when APXN in list, save configs, reset to factordeafuts, downgrade to 7.3, upgrade to 7.3 and reinstate .configs.
UPdate: a probable work instruction that seems to consistently work.
Here is the work instruction i used.
(1) turn off all other WIFI base stations where you are that you can. (important I believe)
(2) turn off airport in your mac
(3) connect troublesome APXN to mac via ETHERNET cable. Set DHCP on your mac or some address in IPV4
(4) power off and on the APXn (yes again )
(5) whilst it is powering up, use a pen of toothpick to RESET the APXn again (i think this causes something to move around inside the magic-ware)
(6) the light will flash amber (no network to connect to)
(7) launch /utilities/airport utility.app
(8) the one and only APXn appears in the list
(8.5) optional: (cross fingers and legs :))
(9) when profile comes back, use FILE/SAVE a COPY AS to the ~/desktop to save the complete profiles and settings of what you have in there currently.
(10) select the one and only APXn and perform a airport utility.app/base station/ RESET TO FACTORY DEFAULTS - and wait for 30 secs and then it will restart
(11) when complete, quit and relaunch the /utilities/airport utility.app
(12) the APXN will be as when you bought it (pristine and no stuff in it from you)
(13) connect your mac back to internet via ethernet if possible. (avoid the wireless just to be sure but at this stage you could reinstate all your exiting wireless infrastructure)
(14) select the one and only APXn AGAIN and perform a airport utility/base station/ UPLOAD FIRMWARE and select version 7.3 (back level) . THe firmware will load into APXn 0%-100% guage and then it will restart.
(15) when complete, quit and relaunch the /utilities/airport utility.app and it will warn that one of the basestations (the only on the list - the APXN) has later FIRMWARE available for it. [This is 7.3.1].
(16) reply OK to UPLOAD NEW 7.3.1 firmware. (yes yes I realise ths sounds silly but it works ok ) 7.3.1 Firmware will up load into the APXN as above and restart will take place.. so say 120 seconds.
(17) quit and relaunch the /utilities/airport utility.app. THE APXN will appear as before as now with 7.3.1.
(18) just to make sure, (we're not quite finished), remove the ETHERNET cable. If not already done form previous optional step, ENABLE the AIRPORT (WIFI) on your mac.
(19) power OFF then power ON the APXn.. wait for the usual 70 secs..
(20) Again, to be sure, QUIT and RESTART the /utilities/airport utility.app, the APX as factory default with amber icon will appear in the list [along wit the rest of your apple airport base stations).
(21) Select it in the list fo MANUAL and the configuration will be read quickly.
(22) do this (steps 18-21) 3 or 4 times to see that it is consistent. (I this it 7 before posting this).
last step...
• select the APXN (default settings) and IMPORT the save configuration file (~/desktop/nnn.baseconfig) (all it) from the ~/desktop. Ignore any errors (untick them), add a password for the base station and UPDATE!
• wait for the usual 70 secs.
• without quitting the /utilities/airport utility.app, the UPDATED APXN with your configuration will be in the list.
NOw try and selectit for manual and it should respond in time without timing out.
Test by powering off and removing from wall socket and moving around too to make sure you can SEE it in the /utilities/airport utility.app and select it for MANUAL CONFIGURATION.
After many days of frustration on weekend and over night, this appears to have worked ok for me.
(now to work out the AEBSn port forwarding issue - it wont work).
HTH
w

Poor 802.11g file transfer performance

I know this is the kind of question that gets shotgun, "that's what worked for me" answers, but I thought I'd ask, just in case there's a clear problem I'm missing.
I have an Airport Extreme (purchased in June) and an older Mac mini. The mini must connect to my router with 802.11g; the router is in dual-band mode. I was seeing very slow network performance, so I did some tests.
Copying a 128MB file via Finder (to either a USB disk or an 802.11n machine): between 790 and 1400 s (0.8-1.4 Mbps)
Copying a 128MB file via scp (to an 802.11n machine): between 540 and 640 s (1.7-2.0 Mbps)
(1 Mbps = 1,000,000 bits per second)
Bottom line, I'm typically falling between 1 and 2 Mbps. This surprises (and frustrates) me, since 802.11g has a 54 Mbps maximum; I'd expect 8-16 Mbps to be typical. So things like Time Machine backups and Apple TV syncing are more than 4 times slower than they ought to be.
Any idea what could be going wrong? What I know:
- The second leg of the file transfer doesn't seem to matter. Results are consistent copying to either a USB drive (on the router) or another machine.
- The protocol isn't particularly relevant -- scp is faster, but not nearly fast enough.
- Copying using only 802.11n is reasonably fast (I think): around 30 Mbps.
- Wireless signal is always strong, at least as reported by the OS X status bar.
Suggestions on how to fix or at least better diagnose this would be appreciated.

Ran another test via Finder: 210 s (5.1 Mbps)
That's much more on par with what I'd expect (although it still seems a bit slow -- is this typical performance?) The difference is that an Apple TV sync was running in the background during the other tests. (The sync was running at such a slow rate that I didn't think it would have a major impact.)
I'm still worried about performance, though: why was the background Apple TV sync so slow in the first place? It was copying pictures, and while it's hard to get an accurate measure, my estimate was that it was doing around 1 Mbps on its own, before I was using the network for anything else.

Apex report performance is very poor with apex_item.checkbox row selector.

Hi,
I'm working on a report that includes some functionality to be able to select multiple records for further processing.
The report is based on a view that contains a couple of hundred thousand records.
When i make a selection from this view in sqlplus , the performance is acceptable but the apex report based on the same view performes very poorly.
I've noticed that when i omit the apex_item.checkbox from my report query, performance is on par with sqlplus. (factor 10 or so quicker).
Explain plan appears to be the same with or without checkbox function in the select.
My query is:
select apex_item.checkbox(1,tan_id) Select ,
brt_id
, tan_id
, message_id
, conversation_id
, action
, to_acn_code
, information
, brt_created
, tan_created
from (SELECT brt.id brt_id, -- view query
MAX (TAN.id) tan_id,
brt.message_id,
brt.conversation_id,
brt.action,
TAN.to_acn_code,
TAN.information,
brt.created brt_created,
TAN.created tan_created
FROM (SELECT brt_id, id, to_acn_code, information, created
FROM xxcjib_transactions
WHERE tan_type = 'DELIVER' AND status = 'FINISHED') TAN,
xxcjib_berichten brt
WHERE brt.id = TAN.brt_id
GROUP BY brt.id,
brt.message_id,
brt.conversation_id,
brt.action,
TAN.to_acn_code,
TAN.information,
brt.created,
TAN.created)
What could be the reason for the poor performance of the apex report?
And is there another way to select multiple report records without the apex_item.checkbox function?
I'm using apex 3.2 on oracle 10g database.
Thanks,
Niels Ingen Housz
Edited by: user11986529 on 19-mrt-2010 4:06

Thanks for your reply.
Unfortunately changing the pagination doesnt make much of a difference in this case.
Without the checkbox the query takes 2 seconds.
With checkbox it takes well over 30 seconds.
The second report region on this page based on another view seems to perform reasonably well with or without the checkbox.
It has about the same number of records but with a different view query.
There are also a couple of filter items in the where clause of the report queries (same for both reports) based on date and acn_code and both reports have a selectlist item displayed in their regions based on a simple lov. These filter items don't seem to be of influence on the performance.
I have also recreated the report on a seperate page without any other page items or where clause and the same thing occurs.
With the checkbox its very very slow (more like 20 times slower).
Without it , the report performs well.
And another thing, when i run the page with debug on i don't see the actual report query:
0.08: show report
0.08: determine column headings
0.08: activate sort
0.08: parse query as: APEX_CMA_ONT
0.09: print column headings
0.09: rows loop: 30 row(s)
and then the region is displayed.
I am using databaselinks in the views b.t.w
Edited by: user11986529 on 19-mrt-2010 7:11

Very poor 802.11n performance

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