Hi Marcus,
I found a very good tuning guide from Red Hat.
If you use RHEL 6 or the like, you should consider to install tuned & tuned-utils and activate the enterprise-storage profile as the baseline before going to more advanced tuning.
Cuong
On Tue, Dec 3, 2013 at 8:04 PM, Marcus Bointon <marcus@xxxxxxxxxxxxxxxxxx> wrote:
On 3 Dec 2013, at 06:13, Robert Hajime Lanning <lanning@xxxxxxxxxx> wrote:Do you happen to have any good guides on tuning those? I've only encountered swappiness before.
> I have these tuned for my system:
> vm.swappiness
> vm.vfs_cache_pressure
> vm.dirty_background_ratio
> vm.dirty_ratio
> vm.dirty_writeback_centisecs
> vm.dirty_expire_centisecs
>
> This pretty much goes for any storage server that is filesystem based (ext2/3/4,xfs,btrfs,zfs...)
>
> Very important to tune these values when you have large amounts of RAM.
Marcus
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Nguyen Viet Cuong
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