From: Josh Durgin <josh.durgin@inktank.com>
To: Stefan Priebe <s.priebe@profihost.ag>
Cc: "Sébastien Han" <han.sebastien@gmail.com>,
"ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>,
"Alexandre DERUMIER" <aderumier@odiso.com>
Subject: Re: improve speed with auth supported=none
Date: Tue, 13 Nov 2012 00:04:49 -0800 [thread overview]
Message-ID: <50A1FF21.2020700@inktank.com> (raw)
In-Reply-To: <50A1FC4D.8010000@profihost.ag>
On 11/12/2012 11:52 PM, Stefan Priebe wrote:
> Am 13.11.2012 08:42, schrieb Josh Durgin:
>> On 11/12/2012 01:57 PM, Stefan Priebe wrote:
>>> Thanks,
>>>
>>> this gives another burst for iops. I'm now at 23.000 iops ;-) So for
>>> random 4k iops ceph auth and especially the logging is a lot of
>>> overhead.
>>
>> How much difference did disabling auth make vs only disabling logging?
>
> disable debug logging: 3000 iops
> disable auth logging: 2000 iops
>
> Is anybody in the ceph team also interested in a call graph of kvm when
> VM is doing random 4k write io?
I'm interested, although I'm not sure how easy it'll be to find
bottlenecks from it. It's worth a shot.
next prev parent reply other threads:[~2012-11-13 8:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-12 15:37 improve speed with auth supported=none Stefan Priebe - Profihost AG
2012-11-12 18:26 ` Sébastien Han
2012-11-12 21:57 ` Stefan Priebe
2012-11-13 7:42 ` Josh Durgin
2012-11-13 7:52 ` Stefan Priebe
2012-11-13 8:04 ` Josh Durgin [this message]
2012-11-13 8:06 ` Stefan Priebe
[not found] ` <50A39B9D.4080304@astranetwork.net>
2012-11-15 8:07 ` Stefan Priebe - Profihost AG
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=50A1FF21.2020700@inktank.com \
--to=josh.durgin@inktank.com \
--cc=aderumier@odiso.com \
--cc=ceph-devel@vger.kernel.org \
--cc=han.sebastien@gmail.com \
--cc=s.priebe@profihost.ag \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.