Re: [PATCH] improve jbd fsync batching

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Arjan van de Ven wrote:
On Tue, 28 Oct 2008 15:38:05 -0600
Andreas Dilger <adilger@xxxxxxx> 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

--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux