>Why are your servers not dropping from queue? Looks like you
>have 15 linux guests - all in Q3, none dropping from queue.
The main reasons for not dropping from queue are the Timer and real OSA
devices.
We found that you need to turn off the jiffy timer with an
echo 0> /proc/sys/kernel/hz_timer
n Robinson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 19, 2004 4:50 PM
To: [EMAIL PROTECTED]
Subject: High STEAL percentage with Linux workload
Your vdisks are fine.
Page stealing is the norm for Linux under z/VM when not
configured correctly. Your servers are not dropping from queue.
So how d
Your vdisks are fine.
Page stealing is the norm for Linux under z/VM when not
configured correctly. Your servers are not dropping from queue.
So how does VM get pages from a user that does not drop from
queue? steals 'em. And it's not like your steal rate is
impacting your performance - YET.
I have several Oracle databases running in SLES8, each with 350M storage and four
100MB v-disks.
VM partition storage is 8GB and 2GB expanded. I'm seeing page stealing sometimes
in the 90% range. Here's a typical reading:
AVGPROC-031% 01
XSTORE-72/SEC MIGRATE-/SEC
MDC READS-00/SEC WRI
