Re: shared_buffers/effective_cache_size on 96GB server - Mailing list pgsql-performance

On 10/10/2012 09:35 AM, Strahinja Kustudić wrote:

> #sysctl vm.dirty_ratio
> vm.dirty_ratio = 40
> # sysctl vm.dirty_background_ratio
> vm.dirty_background_ratio = 10

Ouuuuch. That looks a lot like an old RHEL or CentOS system. Change
those ASAP. Currently your system won't start writing dirty buffers
until it hits 9.6GB. :(

> shows that these values are even higher by default. When you said
> RAID buffer size, you meant the controllers cache memory size?

Yeah, that. :)

--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-444-8534
sthomas@optionshouse.com

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