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SubjectRe: question wrt context switching during disk i/o
> This is something that has been bugging me for a while.  I notice
> on my system that during disk write we do much context switching,
> but not during disk read. Why is that?

bdflush is broken in current kernels. I posted to linux-mm about this,
but Rik et al haven't shown any interest. I normally see bursts of
up to around 40K cs/second when doing writes; I hacked a little
premption counter into the kernel and verified that they're practially
all bdflush...

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