Re: Strange write starvation on 2.6.17 (and other) kernels

From: Jason Lunz
Date: Tue Aug 15 2006 - 14:39:01 EST

szymans@xxxxxxxxxx said:
> I've encountered a strange problem - if an application is sequentially
> writing a large file on a busy machine, a single write() of 64KB may
> take even 30 seconds. But if I do fsync() after each write() the maximum

If the sleeps are that long, and reproducible, then maybe you can find
the offending wait by using sysrq-t while the writer is blocked.


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