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Old 04-17-2012, 10:19 AM   #16
gcat
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[solved] Wait IO suddenly extremely high (exploit ?), crashing the server


(sorry, I tried to modify the title of the thread, but couldn't)
 
Old 04-17-2012, 08:04 PM   #17
Linux_Kidd
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well, technically not solved. its pixie dust.

what type of filesystem, IO scheduler, do you run
 
Old 04-18-2012, 11:49 AM   #18
gcat
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My file system is ext4 if that's what you ask.
As for the IO scheduler, I don't know ... how do I check it ?
I just know my hard drive is in a RAID5 cluster, and 1&1 advised me to go for a dedicated server to have faster IO exchanges (because they failed to understand the 'huge waitIO problem' was not normal in my case)
 
Old 04-18-2012, 12:14 PM   #19
Linux_Kidd
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Quote:
Originally Posted by gcat View Post
My file system is ext4 if that's what you ask.
As for the IO scheduler, I don't know ... how do I check it ?
I just know my hard drive is in a RAID5 cluster, and 1&1 advised me to go for a dedicated server to have faster IO exchanges (because they failed to understand the 'huge waitIO problem' was not normal in my case)
make sure the scheduler you use matches the use of the system and hardware being used, etc.

# cat /sys/block/{DEVICE-NAME}/queue/scheduler

example
# cat /sys/block/sda/queue/scheduler

the item is brackets is the current scheduler for that block device.
 
  


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