[rabbitmq-discuss] RabbitMQ performance tips, collected with sweat and blood

[Eugene Kirpichov]

On Mon, Aug 15, 2011 at 8:51 AM, Matthew Sackman <matthew at rabbitmq.com> wrote:
> On Mon, Aug 15, 2011 at 08:33:46AM -0700, Eugene Kirpichov wrote:
>> Thanks, this is interesting. why so? I thought the i/o pattern of a
>> queueing system should be pretty sequential?
>
> It is, largely. SSDs really help Rabbit when you're doing a lot of syncs
> - if you're using transactions or confirms then the fact that an SSD can
> do an fsync many many times faster than spinning disks is a major
> advantage.
Oh! I'm using confirms. Why do they require many fsyncs? I thought
confirms only *inform* me of fsyncs that would happen anyway?

>
> Matthew
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-- 
Eugene Kirpichov
Principal Engineer, Mirantis Inc. http://www.mirantis.com/
Editor, http://fprog.ru/