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You are here: MacNN Forums > Software - Troubleshooting and Discussion > Mac OS X > Computer freezes, mystery "update" process

Computer freezes, mystery "update" process
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Junior Member
Join Date: Apr 2002
Location: San Diego
Status: Offline
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Mar 28, 2004, 11:09 PM
 
I've recently been having full computer freezes, no mouse movement, no keyboard response, nothing.

Usually before a full computer freeze, top and ps will show "update" running at 20% - 60% CPU. It is owned by root and usually has a pid less than 150, so I think it's run at startup before any other extensions. Anywhere between 5 and 30 minutes later, Console.app will become unresponsive, and then other programs will follow until I have nothing.

I include a portion I think is relevant from my system.log and Apache access_log, as the time of the 414 response from Apache and the first system.log entry seem to correlate within a minute each of the times this has happened. I have turned off the server for now.

From system.log

Code:
Mar 28 19:22:20 localhost kernel: disk2: ioctl(_IOWR,'d',96,24) is unsupported. Mar 28 19:22:21 localhost kernel: SAM Multimedia: READ or WRITE failed, ASC = 0x6f, ASCQ = 0x00 Mar 28 19:22:21 localhost last message repeated 4 times Mar 28 19:22:21 localhost kernel: disk2: I/O error. Mar 28 19:22:22 localhost kernel: SAM Multimedia: READ or WRITE failed, ASC = 0x6f, ASCQ = 0x00 Mar 28 19:22:22 localhost last message repeated 4 times
*SNIP* repeats hundreds of times until it ends with
Code:
Mar 28 19:40:30 localhost kernel: hfs: WARNING - blocks on volume Phouser not allocated!
From my Apache access_log
Code:
[28/Mar/2004:19:21:57 -0800] "SEARCH / \x90\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02\xb1\x02 *etcetera etcetera etcetera* \x90\x90\x90\x90\x90\x90\x90" 414 337
I'm not entirely sure that they are directly related, as I've seen similar Apache log entries without the full computer crash. Any help is greatly appreciated, if you'd like to chat with me, my AIM screen name is the same as my username.
     
Clinically Insane
Join Date: Oct 2001
Location: San Diego, CA, USA
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Mar 29, 2004, 02:16 AM
 
Just to check, you don't have any Symantec or Norton software installed, do you? (I seem to recall the acronym "SAM" being used for some Symantec program is why I ask.)
Chuck
___
"Instead of either 'multi-talented' or 'multitalented' use 'bisexual'."
     
Junior Member
Join Date: Apr 2002
Location: San Diego
Status: Offline
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Mar 29, 2004, 04:16 AM
 
I have no Symantec or Norton programs installed.

I did find out that /dev/disk2 was pointing to a Read-Only DVD inside of my Superdrive bay though, so I ejected the disc to hopefully eliminate that.

I did a local search for SAM and found a .pdf inside of /Developer for "Working With SCSI Architecture Model Devices." However, I do not have any SCSI devices, so I wouldn't know how to eliminate that, assuming that it is the same SAM they are referring to.

Looking on Apple's website, I found this article: WebObjects Update

High CPU usage when processing request with multipart/form-data

Apple Reference 3168044

ISSUE:

Certain requests with multipart/form-data didn't get parsed and processed correctly. In certain cases, this would lead into an infinite loop and never free the CPU.

RESOLUTION:

This issue has been corrected.


FileUpload with malformed headers could cause large CPU usage

Apple Reference 3149051

ISSUE:

Certain HTTP Requests with malformed headers could cause the WebObjects request handlers to take up all CPU cycles.

RESOLUTION:

This issue has been corrected.
Although I did install the Developer's Tools (Xcode), I'm pretty sure WebObjects is not installed, as I couldn't find any hint of it being on my computer and would think I'd remember dropping $700 on software.
     
   
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