[gentoo-user] top - 99.9% wa? What's 'wa'?

[Mark Knecht]

Hi,
   I'm looking at this mythbackend server machine using top. Sometimes
the CPU usage goes to essentially 100%, but only in the 'wa' section.
What is 'wa'? I searched through the man page but didn't see anything
about this.

   I'm suspecting that this machine has stopped being able to keep up
with MythTV due to something using up CPU time. I found that one of my
wife's screensavers (Fireworks) was using 70-90% CPU so I've turned
that off and things seem much better. Now when watching top I never
see anything using more than a few %, but this 'wa' thing persists.


top - 14:51:47 up  4:19,  3 users,  load average: 1.75, 1.88, 1.58
Tasks:  91 total,   2 running,  88 sleeping,   0 stopped,   1 zombie
Cpu(s):  0.3% us,  0.3% sy,  0.0% ni,  0.0% id, 97.7% wa,  0.0% hi,  1.7% si
Mem:    499052k total,   493560k used,     5492k free,     3140k buffers
Swap:  1052216k total,      368k used,  1051848k free,   342352k cached

Thanks,
Mark

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