From: Martin Mailand <martin@tuxadero.com>
To: Stefan Priebe <s.priebe@profihost.ag>
Cc: Gandalf Corvotempesta <gandalf.corvotempesta@gmail.com>,
Mark Nelson <mark.nelson@inktank.com>,
"Atchley, Scott" <atchleyes@ornl.gov>,
Sage Weil <sage@inktank.com>,
"ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Subject: Re: SSD journal suggestion
Date: Wed, 07 Nov 2012 22:55:22 +0100 [thread overview]
Message-ID: <509AD8CA.3080502@tuxadero.com> (raw)
In-Reply-To: <509AD646.30903@profihost.ag>
Hi Stefan,
deep buffers means latency spikes, you should go for fast switching
latency. The HP5900 has a latency of 1ms, the Arista and Mellanox of 250ns.
And I you should think at the price the HP5900 cost 3 times of the Mellanox.
-martin
Am 07.11.2012 22:44, schrieb Stefan Priebe:
> Am 07.11.2012 22:35, schrieb Martin Mailand:
>> Hi,
>>
>> I tested a Arista 7150S-24, a HP5900 and in a few weeks I will get a
>> Mellanox MSX1016. ATM the Arista is may favourite.
>> For the dual 10GeB NICs I tested the Intel X520-DA2 and the Mellanox
>> ConnectX-3. My favourite is the Intel X520-DA2.
>
> That's pretty interesting i'll get the HP5900 and HP5920 in a few weeks.
> HP told me the deep packet buffers of the HP5920 will burst the
> performance and should be used for storage related stuff.
>
> Greets,
> Stefan
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next prev parent reply other threads:[~2012-11-07 21:55 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-07 12:13 SSD journal suggestion Gandalf Corvotempesta
2012-11-07 12:17 ` Sage Weil
2012-11-07 12:28 ` Gandalf Corvotempesta
2012-11-07 15:01 ` Mark Nelson
2012-11-07 16:12 ` Atchley, Scott
2012-11-07 16:20 ` Mark Nelson
2012-11-07 16:35 ` Atchley, Scott
2012-11-07 16:41 ` Mark Nelson
2012-11-07 21:11 ` Martin Mailand
2012-11-07 21:14 ` Gandalf Corvotempesta
2012-11-07 21:35 ` Martin Mailand
2012-11-07 21:44 ` Stefan Priebe
2012-11-07 21:55 ` Martin Mailand [this message]
2012-11-07 21:59 ` Stefan Priebe
2012-11-07 22:13 ` Martin Mailand
2012-11-07 22:28 ` Gandalf Corvotempesta
2012-11-07 22:39 ` Martin Mailand
2012-11-07 22:51 ` Gandalf Corvotempesta
2012-11-07 23:12 ` Mark Nelson
2012-11-08 8:22 ` Gandalf Corvotempesta
2012-11-08 13:55 ` Atchley, Scott
2012-11-08 14:39 ` Mark Nelson
2012-11-08 15:00 ` Atchley, Scott
2012-11-08 15:02 ` Atchley, Scott
2012-11-08 16:19 ` Andrey Korolyov
2012-11-08 18:03 ` Atchley, Scott
2012-11-08 20:12 ` Joseph Glanville
2012-11-08 21:21 ` SSD journal suggestion / rsockets Dieter Kasper
2012-11-08 22:00 ` Joseph Glanville
2012-11-09 14:43 ` Atchley, Scott
2012-11-09 23:41 ` Joseph Glanville
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