Krizzna™

⌊ K™¦krizzna.web.id ⌉

Sekedar coretan seorang nyubi

How can I tell which program is causing high iowait on Redhat?

  • Home
    • / Linux /
  • How can I tell which program is causing high iowait on Redhat?

Posted on by

I have a Redhat enterprise 3 box that has to be rebooted sometimes several times a week because of crippling iowait (between 80% – 95%). This seems to occur randomly and suddenly, I’m running apache, mysql, mailserver. sometimes i go a month without problems, other times I’m rebooting every day, how do I track down the culprit program? top shows CPU usage is very low during iowait problem times.

Share and Enjoy:
  • printfriendly How can I tell which program is causing high iowait on Redhat?
  • digg How can I tell which program is causing high iowait on Redhat?
  • delicious How can I tell which program is causing high iowait on Redhat?
  • facebook How can I tell which program is causing high iowait on Redhat?
  • yahoobuzz How can I tell which program is causing high iowait on Redhat?
  • twitter How can I tell which program is causing high iowait on Redhat?
  • googlebookmark How can I tell which program is causing high iowait on Redhat?
  • email link How can I tell which program is causing high iowait on Redhat?
  • linkedin How can I tell which program is causing high iowait on Redhat?
  • live How can I tell which program is causing high iowait on Redhat?
  • myspace How can I tell which program is causing high iowait on Redhat?
  • pdf How can I tell which program is causing high iowait on Redhat?
  • plurk How can I tell which program is causing high iowait on Redhat?
  • slashdot How can I tell which program is causing high iowait on Redhat?
  • technorati How can I tell which program is causing high iowait on Redhat?
  • tumblr How can I tell which program is causing high iowait on Redhat?
  • hackernews How can I tell which program is causing high iowait on Redhat?

Tags: , , , , ,

  • dlucf

    Oh this is a tough one. My first guess is with the SQL or mail server. First, check the mail logs and see if you’re getting mail bombed or something weird like that. Then check the DB transaction logs. Is there a lot of activity here? If neither of these turn up anything, try switching one of the services off for a day. See if you still get the problem. If you do, then turn that service back on and try another. If the problem goes away, then you’ve narrowed it down.

  • angeldreams110

    dont know