Hello,
I am running bacula on a software raid5 running debian stable with
mdadm, and I was wondering if somebody on this list is a sys admin and
uses similar setup a lot and has these "steps" to increase servers
performance.

ext3, 4x500gb, raid5, with 8gb of ram, and amd opteron with debian amd64

For some reason I am experiencing delay in responses from debian. I
open a terminal or do "ls" and it takes about half a second to display
the results.

I have tried increasing the /sys/block/md1/md/stripe_cache_size but
that didn't solve my problem and I'm not sure if it increased the
write speed. I've set /sys/block/md1/md/stripe_cache_size to 1024 I
see a higher write speed when doing dd if=/dev/zero of=/bigfile bs=1M
count=8192 but iostat doesn't show higher write speeds.

So what should I be looking at exactly? how to benchmark hdd, memory,
kernel, network to find out what is going on?


iostat -m 1
I don't see higher write speeds. It seems as its all memory written
until later. Can iostat showing me the right results?

So if you are using raid5 and have steps I could reproduce to find my
bottleneck let me know..

 step 1 is....?
 step 2 is...?
....


Thanks,
Lucas


-- 
Turbogears2 Manual
http://lucasmanual.com/mywiki/TurboGears2
Bazaar and Launchpad
http://lucasmanual.com/mywiki/bzr

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