On Mon, Apr 24, 2017 at 12:43 PM, pinker <pinker@onet.eu> wrote:
> I've seen very big differences with huge_pages set to on, especially in
> context of CPU usage on multiple socket servers.
>
> You could play as well with storage options, for instance inode size and
> check if there is any advantage for your db from inlining, which is
> supported by xfs. You can find more informations here:
> http://beegfs.com/wiki/StorageServerTuning
>
> An interesting option for WAL would be to add the mount option- allocsize -
> and set it to 16MB - so the exact size of WAL segment to reduce the risk of
> fragmentation and optimal streaming write throughput.
>
All good options. Also make sure zone reclaim mode is set to 0 on big
memory machines. It's a great setting for big VM hosts but a terrible
one for file or db servers.