From: Andy <angelflow@yahoo.com>
To: wozniak@lanl.gov <wozniak@lanl.gov>
To: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
To: John W Strange <john.w.strange@jpmchase.com>
Subject: Re: concurrent IO in postgres?
Date: Thu, 23 Dec 2010 11:58:18 -0800 (PST)
Message-ID: <409661.69535.qm@web111313.mail.gq1.yahoo.com> (raw)
In-Reply-To: <EF37296944B47C40ADDCCB7BFD6289FE046D546506@EMASC201VS01.exchad.jpmchase.net>
--- On Thu, 12/23/10, John W Strange <john.w.strange@jpmchase.com> wrote:
> Typically my problem is that the
> large queries are simply CPU bound.. do you have a
> sar/top output that you see. I'm currently setting up two
> FusionIO DUO @640GB in a lvm stripe to do some testing with,
> I will publish the results after I'm done.
>
> If anyone has some tests/suggestions they would like to see
> done please let me know.
>
> - John
Somewhat tangential to the current topics, I've heard that FusionIO uses internal cache and hence is not crash-safe, and if the cache is turned off performance will take a big hit. Is that your experience?
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: angelflow@yahoo.com, wozniak@lanl.gov, john.w.strange@jpmchase.com
Subject: Re: concurrent IO in postgres?
In-Reply-To: <409661.69535.qm@web111313.mail.gq1.yahoo.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox