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How do I make sure event are written immediately and not buffered in Centos 5.x
Posted on 2011-02-28
I believe that Centos buffers logs for many services (it might be the service itself, I don't know) and I want to make sure that when Apache sees an error it is written right away, the same with sshd,e tc.
Is there a way to change the buffering settings?
Is there a way to change the buffering settings?
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3 Comments
Assuming you have the ext3 file system, you are going to be looking at the "commit" interval. By default, it is set to sync data to the disk every five (5) seconds.
You can change that in /etc/fstab for partitions that aren't root, but need to add the option to the kernel line (in GRUB) for the root partition.
You probably also should read this:
http://www.westnet.com/~gsmith/content/linux-pdflush.htm
You can change that in /etc/fstab for partitions that aren't root, but need to add the option to the kernel line (in GRUB) for the root partition.
You probably also should read this:
http://www.westnet.com/~gsmith/content/linux-pdflush.htm
to change it off the default 5 seconds, it should just be appending "rootflags=commit=3" or the like to the end of the kernel line. See, for example: http://blog.loxal.net/2008/01/tuning-ext3-for-performance-without.html
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