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Old 01-19-2008, 06:08 PM   #1
phip
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Yum Incredibly slow - disk wait?


I am using FC8, and my computer is a Gateway MX6441 Laptop (1.8 GHz AMD Turon 64, 512 MB 333 Mhz PC2700, 80GB 4200 RPM HDD). Not a new computer, but I'd think enough for linux.

My problem is mostly with Yum. It brings my system to its knees. Things get so slow when yum or yumupdatesd is running that the mouse becomes jerky. If I look at top, CPU usage is around 9%, but disk wait (wa) is 92%.

I realize my hard drive is pretty slow, but it seems like something is WRONG. Could something be misconfigured? Does yum just have really awful IO code? Is it like this for everyone?

Thanks all
Jp
 
Old 01-20-2008, 09:34 AM   #2
Glennzo
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System > Administration > Services. Disable yum-updatesd.
 
Old 01-20-2008, 12:31 PM   #3
phip
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Thank you, I've already got yum-updatesd disabled, but I still am searching for the source of the problem.
 
Old 01-20-2008, 02:48 PM   #4
Glennzo
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top will show you what's eating things up.

Edit: I see you've already looked at top.

Last edited by Glennzo; 01-20-2008 at 02:52 PM.
 
Old 01-20-2008, 11:28 PM   #5
phip
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Yes, unfortunately top can't sort by disk wait, only show it as a whole. Usually the offending process is idle BECAUSE it is waiting. I'm going to try using sar to figure what is happening.
 
Old 01-21-2008, 12:51 AM   #6
syg00
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Probably won't help - have a look at this recent thread. Interesting stuff is in the last couple of pages.
 
  


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