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Re: [OpenStack][Swift] Some questions about the performance of swift .

To: Paulo Ricardo Motta Gomes <pauloricardomg@xxxxxxxxx>
From: Christoph Hellwig <Christoph.Hellwig@xxxxxxxxxx>
Date: Thu, 26 Jul 2012 12:34:09 -0700
Cc: "openstack@xxxxxxxxxxxxxxxxxxx" <openstack@xxxxxxxxxxxxxxxxxxx>
In-reply-to: <CAKaZCX6Zu4vSFr9CPqZ_e7Tuh3RKdGFAupqcGkSM4iCxHfUTRg@mail.gmail.com>

On Wed, 2012-07-25 at 10:35 -0300, Paulo Ricardo Motta Gomes wrote:
> I've been running into similar problems too, in a setup with lots of small
> files. Does anyone knows how big is the XFS inode and directory caches?

The are only limited by memory size.  You can
tune /proc/sys/vm/vfs_cache_pressure to tune how they are reclaimed
relatively to the file data cache.

References

[OpenStack][Swift] Some questions about the performance of swift .
From: Kuo Hugo, 2012-07-20
Re: [OpenStack][Swift] Some questions about the performance of swift .
From: Paulo Ricardo Motta Gomes, 2012-07-20
Re: [OpenStack][Swift] Some questions about the performance of swift .
From: Kuo Hugo, 2012-07-21
Re: [OpenStack][Swift] Some questions about the performance of swift .
From: Robert van Leeuwen, 2012-07-25
Re: [OpenStack][Swift] Some questions about the performance of swift .
From: Paulo Ricardo Motta Gomes, 2012-07-25