[Openstack] [Swift] Cache pressure tuning

Peter Portante peter.a.portante at gmail.com
Mon Jun 17 10:48:10 UTC 2013


Can you say more about your environment and setup, and then about the
measurements you are taking to categorize the performance issue?

On Mon, Jun 17, 2013 at 3:25 AM, Jonathan Lu <jojokururu at gmail.com> wrote:
> Hi, all,
>     I'm facing the issue about the performance degradation, and once I
> glanced that changing the value in /proc/sys/vm/vfs_cache_pressure will do a
> favour.
>
>     Can anyone explain to me whether and why it is useful? I have scanned
> the Deployment Guide of OpenStack Swift but cannot find anything about such
> tuning.
>
> Thanks,
> Jonathan Lu
>
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