On Tue, Aug 12, 2014 at 11:35 PM, Dmitry Monakhov <dmonakhov@xxxxxxxxxx> wrote:
> I'll bet a box of "russian caviar" that AlViro will never ever allow
> to place project ID to generic inode. Because it is obviously has no
> reason for any other filesystem except xfs/ext4.
Yeah, understood. Maybe the discription is misleading. I added a
field of project ID in ext4_inode structure. The general ext4 inode
structure is not changed.
>
> BTW. Which quota options you use for performance testing? It looks like
> you use non-journaled quota. But this means that you have to fully
> recalculate quota in case of power failure. It is reasonable to enable
> journaled-quota, but it result in visible journaling overhead.
Yeah, we were using non-journaled quota. And we were doing this
benchmark to confirm that xattr based implementation has extra
overhead. We will run benchmarks on journaled-quota, and let's see
what is the performance difference between non-journaled and
journaled quotas.
Regards,
-Li Xi
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