From: hubert depesz lubaczewski <depesz@depesz.com>
To: Scott Carey <scott@richrelevance.com>
Cc: Andrej <andrej.groups@gmail.com>
Cc: Grzegorz Jaśkiewicz <gryzman@gmail.com>
Cc: Jeff <threshar@real.jefftrout.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: random_page_cost vs ssd?
Date: Wed, 11 Mar 2009 20:32:27 +0100
Message-ID: <20090311193227.GA19182@depesz.com> (raw)
In-Reply-To: <C5DD5F07.32E1%scott@richrelevance.com>
References: <b35603930903111204l6825f931kf67183f7c48971fe@mail.gmail.com>
<C5DD5F07.32E1%scott@richrelevance.com>
On Wed, Mar 11, 2009 at 12:28:56PM -0700, Scott Carey wrote:
> Google > “linux drop_caches” first result:
> http://www.linuxinsight.com/proc_sys_vm_drop_caches.html
> To be sure a test is going to disk and not file system cache for everything in linux, run:
> ‘sync; cat 3 > /proc/sys/vm/drop_caches’
well. the url you showed tells to do: echo 3 > ...
cat 3 is "slightly" different.
Best regards,
depesz
--
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To: pgsql-performance@postgresql.org
Cc: depesz@depesz.com, scott@richrelevance.com, andrej.groups@gmail.com, gryzman@gmail.com, threshar@real.jefftrout.com
Subject: Re: random_page_cost vs ssd?
In-Reply-To: <20090311193227.GA19182@depesz.com>
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