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Old 02-06-2008, 04:38 AM   #1
Horos23
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Registered: Jan 2005
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wa (waiting time) from top command is big


Hello,

My top command shows me sometimes a big (80-90% or more) wa indicator. So this means my processor waits a LOT for I/O operations.
I/O operations mean writting and reading from hard disk ?

I want to get a list with the processes that write to hard disk the most in that moment (measured in kbytes/s or whatever). So I can now what to kill / modify for that waiting time to cool.

Thanks.
 
Old 02-06-2008, 04:58 AM   #2
syg00
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You'll need a (very) recent kernel with TASKSTATS - there is also a iotop.py out there if you want to have a quick search.
 
Old 02-06-2008, 05:58 AM   #3
Horos23
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Registered: Jan 2005
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Thanks

I think that's what I need. I will upgrade my kernel and try your solution.
 
  


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