Tzahi
Thx - Fair enough - I can look in archives.
I may be mistaken, but afaik, there is no /proc/sys/vm/block_dump on Red
Hat EL3 - I couldn't find any /proc counters that were per process and
all the counters I can see
are system-wide.
Looking for a real solution today; I started poking around
io-accounting and taskstats - lot of interesting stuff in the 2.6.19
kernel, but I have a production system and I dont have the luxury of
doing kernel updates and patching stuff. Gotta go with what I have.
Still looking.
Danny
Tzahi Fadida wrote:
Check out the archives.
We discussed this in the past.
IIRC, you can use echo "1" > /proc/sys/vm/block_dump
(it might also involve /proc/sys/vm/laptop_mode but i can't remember why).
and then tail /proc/kmsg to see the dump of the processes i/o requests.
On Wednesday 20 December 2006 12:32, Danny Lieberman wrote:
guys
How do I get the real IO (block reads/writes per second, not cached) of
each process on a running Linux system?
vmstat and iostat dont provide process level detail
I'm looking at a system right now which is CPU idle but very IO busy and
I cant figure out who's moving the disks around.
I thought this would be the most trivial question....maybe it is....
10x
--
Danny Lieberman
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