Re: ext4 vs btrfs performance on SSD array

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

 



On Wed, Sep 03, 2014 at 10:01:58AM +1000, NeilBrown wrote:
> Do we still need maximums at all?

I don't think we do.  At least on any system I work with I have to
increase them to get good performance without any adverse effect on
throttling.

> So can we just remove the limit on max_sectors and the RAID5 stripe cache
> size?  I'm certainly keen to remove the later and just use a mempool if the
> limit isn't needed.
> I have seen reports that a very large raid5 stripe cache size can cause
> a reduction in performance.  I don't know why but I suspect it is a bug that
> should be found and fixed.
> 
> Do we need max_sectors ??

I'll send a patch to remove it and watch for the fireworks..
--
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