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
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