Messages in this thread | | | Date | Tue, 28 Oct 2008 17:56:39 -0400 | From | Ric Wheeler <> | Subject | Re: [PATCH] improve jbd fsync batching |
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Arjan van de Ven wrote: > 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. >
For small writes as well as reads?
If so, it would be great to test Josef's patch against your shiny new SSD :-)
ric
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