Hi Rory,

That's a good idea! :-). We are also monitoring I/O with Munin, the normal tables, but I don't have an idea what "normal" values are. I know that the servers are virtual machine's, running on VMWare, and the storage is on a different machine (probably SAN).

Do you know what normal I/O values are? What should be considered "fast", and what should be considered slow?

Then I could compare this with our munin stats as well.

Changing the store pool to ext2 now, afterwards, on a production server, is a bit difficault. Also because the servers are in Jakarta, in an protected environment, which I can only access trough VPN, and we're in the netherlands :-). Bit of a distance, hehe.

Thanks for your input Rory and Alejandro!



Rory Campbell-Lange wrote:
On 05/01/10, Alejandro Guerrieri ([email protected]) wrote:
If the store spool builds up, ext3 could become a serious performance hog.

If disk IO might be the problem the iotop tool is an excellent way of
watching what processes and disk partitions may be causing a problem.

According to the man page, iotop requires Linux kernel 2.6.20 or later.



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