I'm having a hard time understanding how to determine load
on my
domUs. I'm running FC5 on both my dom0 and domUs, all up to
date
against the official fedora repositories as of last night.
On at
least one of my domUs acting as a database, xm top shows CPU
load at
roughly 60% when I fire off some long-running queries. That
sounds
reasonable to me, but running top of the domU itself shows
almost no
cpu load. The domU *is* doing a lot of I/O, but according to
vmstat
on the domU, very little of the processors are stuck in I/O
wait state.
So, I'm not sure what the proper question is. It's probably
some
combination of these two:
1. Why does the domU not think it's stuck in I/O wait?
2. Why does xm top and top on the domU disagree?
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