centos 5.7 filesystem performance

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luvdemheels
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centos 5.7 filesystem performance

Post by luvdemheels » 2014/09/02 16:50:43

We have some performance issues with our filesystems. They are ext3. We mount them with "ext3 defaults,noatime,nodiratime 1 2" . Strange thing is after a reboot everything seems to run fast but it doesn't take long at all for all our reads and writes to go back to slow. I feel like we may be missing something. Please let us know if we are mounting them wrong or should we be doing something different??

gerald_clark
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Re: centos 5.7 filesystem performance

Post by gerald_clark » 2014/09/02 17:01:22

5.7 is old and unsupported.
yum update to 5.10 and retest.

luvdemheels
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Re: centos 5.7 filesystem performance

Post by luvdemheels » 2014/09/02 17:02:45

What would the exact command be? "yum update 5.10" ??

gerald_clark
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Re: centos 5.7 filesystem performance

Post by gerald_clark » 2014/09/02 17:08:44


luvdemheels
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Re: centos 5.7 filesystem performance

Post by luvdemheels » 2014/09/05 17:27:00

In theory should the server be able to update cleanly to 5.10 from 5.07?

Also wondering about ext3 vs ext4. Right now the data is on ext3 filesystems. Will I pick up performance moving them to ext4 or something else?? I ask because we installed 7 with xfs on an OLD server and ran the same programs against the same data and it was alot faster than a lot newer server.

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TrevorH
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Re: centos 5.7 filesystem performance

Post by TrevorH » 2014/09/05 18:08:12

Read the release notes for the intervening releases between your current one and the latest to make sure there is nothing you need to do before/after the update. Otherwise, the main advantage of Enteprise Linux is that updates should be transparent.
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drk
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Re: centos 5.7 filesystem performance

Post by drk » 2014/09/06 21:09:53

luvdemheels wrote:In theory should the server be able to update cleanly to 5.10 from 5.07?

Also wondering about ext3 vs ext4. Right now the data is on ext3 filesystems. Will I pick up performance moving them to ext4 or something else?? I ask because we installed 7 with xfs on an OLD server and ran the same programs against the same data and it was alot faster than a lot newer server.
If a reboot restores the IO speed as you said in the first post then changing filesystems isn't likely to do anything as your problem is elsewhere. How much RAM do you have?

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