Messages in this thread | | | Date | Tue, 28 Oct 2008 14:44:01 -0700 | From | Arjan van de Ven <> | Subject | Re: [PATCH] improve jbd fsync batching |
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On Tue, 28 Oct 2008 15:38:05 -0600 Andreas Dilger <adilger@sun.com> wrote:
> On Oct 28, 2008 16:16 -0400, Josef Bacik wrote: > > I also have a min() check in there to make sure we don't sleep > > longer than a jiffie in case our storage is super slow, this was > > requested by Andrew. > > Is there a particular reason why 1 jiffie is considered the "right > amount" of time to sleep, given this is a kernel config parameter and > has nothing to do with the storage? Considering a seek time in the > range of ~10ms this would only be right for HZ=100 and the wait would
well... my disk does a 50 usec seek time or so.. so I don't mind ;-)
in fact it sounds awefully long to me.
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
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