[Openstack] [swift] openstack swift PUT object question

Anne Gentle anne at openstack.org
Fri Oct 10 14:43:03 UTC 2014

Hi, this list isn't for OpenStack support -- you want
openstack at lists.openstack.org instead of foundation at lists.openstack.org.

So I'm sending to that list instead. I don't know the answer but I know
you'll have a better chance of getting the answer on the correct list.


On Fri, Oct 10, 2014 at 7:44 AM, dboyzhong <dboyzhong at 163.com> wrote:

> Hi.
>    when i put a object(1K) to swift cluster, the performance is so bad,
> QPS only 16. and i found the function: "_finalize_put" in file Diskfile.py
> cost too much time .
> mainly caused by the fsync() inside _finalize_put operation, the fsync()
> will cost 30ms when write 1KB data to disk .  as a result the PUT
> performance is bad.
>   how can tuning the performance ? and why call fsync() function?
>     thanks
> _______________________________________________
> Foundation mailing list
> Foundation at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/foundation
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