regression: 100% io-wait with 2.6.24-rcX

From: Joerg Platte
Date: Mon Jan 07 2008 - 06:10:29 EST


Hi,

when booting kernel 2.6.24-rc{4,5,6,7} top reports up to 100% iowait, even if
no program accesses the disc on my Thinkpad T40p. Kernel 2.6.23.12 does not
suffer from this. Is there anything I can do to find out which process or
which part of the kernel is responsible for this? I can try to bisect it, but
maybe there are other possibilities to debug this, since I cannot boot this
computer frequently. I discovered, that there is no iowait within the first
few seconds after waking up from suspend to ram...

regards,
JÃrg

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