From: Mark Lord <kernel@teksavvy.com>
To: Joe Ceklosky <jfceklosky@gmail.com>
Cc: linux-ide@vger.kernel.org
Subject: Re: SSD slowdown with 3.3.X?
Date: Wed, 18 Apr 2012 23:13:48 -0400 [thread overview]
Message-ID: <4F8F82EC.1060708@teksavvy.com> (raw)
In-Reply-To: <4F8F7533.6020300@gmail.com>
On 12-04-18 10:15 PM, Joe Ceklosky wrote:
> All,
>
> Has anyone reported slowness using SSD's on kernel 3.3.X compiled
> as 32-bit PAE with 16 Gigs of memory (I know I need to update to 64-bit
> already, will do with Fedora 17)?
>
> I am see terrible r/w to an SSD using 3.3.2. When I boot the same machine
> and SSD back in 3.2.15 all is fine.
Double check which IO-scheduler the kernel is choosing.
For SSDs, it is normally "noop", but I noticed "cfq"
being chosen instead for some reason.
find /sys -name scheduler|grep '/sd[a-z]/'|xargs cat
-ml
next prev parent reply other threads:[~2012-04-19 3:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-19 2:15 SSD slowdown with 3.3.X? Joe Ceklosky
2012-04-19 3:13 ` Mark Lord [this message]
2012-04-20 15:23 ` Jeff Moyer
[not found] ` <4F90C4CF.1010000@gmail.com>
2012-04-21 2:40 ` Mark Lord
2012-04-21 2:43 ` Mark Lord
2012-04-21 3:53 ` Stan Hoeppner
2012-04-21 11:45 ` cwillu
2012-04-21 18:30 ` Stan Hoeppner
2012-04-23 12:44 ` Mark Lord
2012-04-25 0:22 ` Stan Hoeppner
2012-04-23 14:11 ` Jeff Moyer
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