From: Stan Hoeppner <stan@hardwarefreak.com>
To: stan@hardwarefreak.com
Cc: Andrei Banu <andrei.banu@redhost.ro>, linux-raid@vger.kernel.org
Subject: Re: Incredibly poor performance of mdraid-1 with 2 SSD Samsung 840 PRO
Date: Mon, 22 Apr 2013 18:25:04 -0500 [thread overview]
Message-ID: <5175C6D0.3030901@hardwarefreak.com> (raw)
In-Reply-To: <51747382.1010105@hardwarefreak.com>
On 4/21/2013 6:17 PM, Stan Hoeppner wrote:
> It may not be necessary, at least to solve any SSD performance problems
> anyway. Reexamining your numbers shows you hit 262MB/s to /dev/sda.
> That's 65% of SATA2 interface bandwidth, so this kernel probably does
> have the patch. Your problem lie elsewhere.
Big correction. That should state 87% of SATA2 interface bandwidth. I
must have been thinking of three things at once when I fubar'd that, as
that's not simply a typo.
--
Stan
next prev parent reply other threads:[~2013-04-22 23:25 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-19 22:58 Incredibly poor performance of mdraid-1 with 2 SSD Samsung 840 PRO Andrei Banu
[not found] ` <CAH3kUhEaZGON=fAyVMZOz5fH_DcfKv=hCa96UCeK4pN7k81c_Q@mail.gmail.com>
[not found] ` <51725458.7020109@redhost.ro>
[not found] ` <CAH3kUhHxBiqugFQm=PPJNNe9jOdKy0etUjQNsoDz_LJNUCLCCQ@mail.gmail.com>
2013-04-20 23:25 ` Andrei Banu
2013-04-20 23:26 ` Andrei Banu
2013-04-21 2:48 ` Stan Hoeppner
2013-04-21 12:23 ` Tommy Apel
2013-04-21 16:48 ` Tommy Apel
2013-04-21 19:33 ` Stan Hoeppner
2013-04-21 19:56 ` Tommy Apel
2013-04-22 0:47 ` Stan Hoeppner
2013-04-22 7:51 ` Tommy Apel
2013-04-22 8:29 ` Tommy Apel
2013-04-22 10:26 ` Andrei Banu
2013-04-22 12:02 ` Tommy Apel
2013-04-23 2:59 ` Stan Hoeppner
2013-04-22 23:21 ` Stan Hoeppner
2013-04-25 11:38 ` Thomas Jarosch
2013-04-20 23:26 ` Andrei Banu
2013-04-21 0:10 ` Stan Hoeppner
[not found] ` <51732E2B.6090607@hardwarefreak.com>
2013-04-21 20:46 ` Andrei Banu
2013-04-21 23:17 ` Stan Hoeppner
2013-04-22 10:19 ` Andrei Banu
2013-04-23 2:51 ` Stan Hoeppner
2013-04-23 10:17 ` Andrei Banu
2013-04-24 3:24 ` Stan Hoeppner
2013-04-24 8:26 ` Andrei Banu
2013-04-24 9:12 ` Adam Goryachev
2013-04-24 10:24 ` Tommy Apel
2013-04-24 21:42 ` Andrei Banu
2013-04-24 21:40 ` Andrei Banu
2013-04-24 16:37 ` Stan Hoeppner
2013-04-24 21:46 ` Andrei Banu
[not found] ` <CAH3kUhHnF0imY=CAHfzaQy4XJuOMgOtbHNp17EYzeSJR2en7Fg@mail.gmail.com>
2013-04-25 10:11 ` Andrei Banu
2013-04-25 10:56 ` Stan Hoeppner
2013-04-22 23:11 ` Andrei Banu
2013-04-23 4:39 ` Stan Hoeppner
2013-04-22 23:25 ` Stan Hoeppner [this message]
2013-04-23 4:49 ` Mikael Abrahamsson
2013-04-23 6:01 ` Stan Hoeppner
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