> I'm running Debian on a Dell with 4x6 core CPU and 128GB memory and
> writing to  a coraid with 9 x 32GB SSDs RAID 10 using jfs with 8
> drives active and 1 as spare.

> I'm considering changing to xfs.  I'm not sure what block size to
> use for the file system, is 8192 appropriate?  The OS page size is
> 4096.

> The database is both write and read intensive, with about 750MB of
> new data added per week and old deleted every six months to one
> year.

> Can someone suggest some appropriate initial configuration parameters
> and shared memory settings for the following hardware?

> I'm running Debian on a Dell with 4x6 core CPU and 128GB memory and
> writing to  a coraid with 9 x 32GB SSDs RAID 10 using jfs with 8
> drives active and 1 as spare.

> I'm considering changing to xfs.  I'm not sure what block size to use
> for the file system, is 8192 appropriate?  The OS page size is 4096.

> The database is both write and read intensive, with about 750MB of new
> data added per week and old deleted every six months to one year.

> A good start:

> Tuning:
> http://www.westnet.com/~gsmith/content/postgresql/pgbench-scaling.htm<http://www.westnet.com/%7Egsmith/content/postgresql/pgbench-scaling.htm>
> Benchmark: http://edoceo.com/liber/db-postgresql-benchmark

> Here's my benchmark on `m1.medium` instance of Amazon EC2:
>        http://gx.viettug.org/zen/kyanh/jobs/pgbench0.jpg.html