From: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
To: "Sébastien Han" <han.sebastien@gmail.com>
Cc: Mark Nelson <mark.nelson@inktank.com>,
Alexandre DERUMIER <aderumier@odiso.com>,
ceph-devel <ceph-devel@vger.kernel.org>,
Mark Kampe <mark.kampe@inktank.com>
Subject: Re: RBD fio Performance concerns
Date: Thu, 22 Nov 2012 14:14:46 +0100 [thread overview]
Message-ID: <50AE2546.9050902@profihost.ag> (raw)
In-Reply-To: <CAOLwVU=VpDPg6iuZM=UFy5bcDm-Rm_dVRkeZrAu-DoFXp9cDKw@mail.gmail.com>
Am 22.11.2012 13:50, schrieb Sébastien Han:
>> journal is running on tmpfs to me but that changes nothing.
>
> I don't think it works then. According to the doc: Enables using
> libaio for asynchronous writes to the journal. Requires journal dio
> set to true.
Ah might be but as the SSDs are pretty fast i don't know which device to
use as journal except tmpfs.
And RAMDISK devices are too expensive.
Greets,
Stefan
> On Thu, Nov 22, 2012 at 12:48 PM, Stefan Priebe - Profihost AG
> <s.priebe@profihost.ag> wrote:
>> Am 22.11.2012 11:49, schrieb Sébastien Han:
>>
>>> @Alexandre: cool!
>>>
>>> @ Stefan: Full SSD cluster and 10G switches?
>>
>> Yes
>>
>>
>>> Couple of weeks ago I saw
>>> that you use journal aio, did you notice performance improvement with it?
>>
>> journal is running on tmpfs to me but that changes nothing.
>>
>> Stefan
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next prev parent reply other threads:[~2012-11-22 18:41 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <50A537EA.5090409@inktank.com>
[not found] ` <CAOLwVUmQa4C_vs_Mbi3b2LeO=wx8_EMVWX5Pyu0y-JnG8nyz+Q@mail.gmail.com>
2012-11-16 22:59 ` RBD fio Performance concerns Mark Kampe
2012-11-19 14:56 ` Sébastien Han
2012-11-19 15:28 ` Alexandre DERUMIER
2012-11-19 15:42 ` Sébastien Han
2012-11-19 16:44 ` Sage Weil
2012-11-19 16:54 ` Mark Kampe
2012-11-19 18:03 ` Sébastien Han
2012-11-19 19:11 ` Alexandre DERUMIER
2012-11-19 20:57 ` Sébastien Han
2012-11-20 7:32 ` Alexandre DERUMIER
2012-11-20 10:37 ` Sébastien Han
2012-11-21 15:52 ` Mark Nelson
2012-11-21 16:34 ` Mark Nelson
2012-11-21 21:47 ` Sébastien Han
2012-11-21 22:05 ` Mark Kampe
2012-11-22 5:46 ` Alexandre DERUMIER
2012-11-23 13:36 ` Chen, Xiaoxi
2012-11-24 16:59 ` Gregory Farnum
2012-11-22 10:19 ` Stefan Priebe - Profihost AG
[not found] ` <CAOLwVUmp7wrfead8qX2BZPbyeN_JY_XBN+wkEWmbY6q1-5u0fw@mail.gmail.com>
2012-11-22 11:48 ` Stefan Priebe - Profihost AG
2012-11-22 12:50 ` Sébastien Han
2012-11-22 13:14 ` Stefan Priebe - Profihost AG [this message]
[not found] ` <CAOLwVUkwVSv-Ven2CTjnTN2J573TBTD2SLDY7df0h7ncJZQgpQ@mail.gmail.com>
2012-11-22 13:29 ` Stefan Priebe - Profihost AG
2012-11-22 14:20 ` Alexandre DERUMIER
2012-11-22 14:22 ` Stefan Priebe - Profihost AG
2012-11-22 14:37 ` Mark Nelson
2012-11-22 14:42 ` Stefan Priebe - Profihost AG
2012-11-22 14:46 ` Mark Nelson
2012-11-22 15:01 ` Stefan Priebe - Profihost AG
2012-11-22 15:26 ` Alexandre DERUMIER
2012-11-22 15:28 ` Stefan Priebe - Profihost AG
2012-11-22 15:35 ` Alexandre DERUMIER
2012-11-22 15:49 ` Sébastien Han
2012-11-22 15:54 ` Stefan Priebe - Profihost AG
2012-11-22 15:55 ` Sébastien Han
2012-11-22 15:57 ` Stefan Priebe - Profihost AG
2012-11-22 15:59 ` Stefan Priebe - Profihost AG
2012-11-22 14:52 ` Alexandre DERUMIER
2012-11-22 15:00 ` Stefan Priebe - Profihost AG
2012-11-23 10:31 ` Stefan Priebe - Profihost AG
2012-11-23 10:47 ` Alexandre DERUMIER
2012-11-23 10:49 ` Stefan Priebe - Profihost AG
2012-11-23 11:03 ` Alexandre DERUMIER
2012-11-23 13:12 ` Stefan Priebe - Profihost AG
2012-11-23 13:18 ` Mark Nelson
2012-11-23 13:24 ` Stefan Priebe - Profihost AG
2012-11-23 13:32 ` Alexandre DERUMIER
2012-11-23 13:33 ` Stefan Priebe - Profihost AG
2012-11-23 13:43 ` Stefan Priebe - Profihost AG
2012-11-22 14:34 ` Mark Nelson
[not found] ` <50AA763A.1050709@inktank.com>
2012-11-19 21:01 ` Sébastien Han
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