Re: I/O tuning... Allocating spindles to databases

From: Mladen Gogala <gogala_at_sbcglobal.net>
Date: Fri, 16 Sep 2005 11:17:03 +0000
Message-Id: <1126869423l.9265l.0l@medo.noip.com>

On 09/15/2005 03:25:40 PM, Kevin Closson wrote:
> >>>
> >>>It isn't too difficult to write a simulation that will
> >>>render the cache useless.
>
> actually quite easy. create a file that is 100 fold
> larger than cache and do completely random 4KB transfers.
>
> smoked
>

But that can easily be solved with larger cache. I know of a site which has 64GB EMC cache and they're happy as clams. File that is 100 times larger then that would be 6.4 TB. They should be doing 8k transfers.

-- 
Mladen Gogala
http://www.mgogala.com


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Received on Fri Sep 16 2005 - 06:19:23 CDT