I started db creation over, this time with 16GB maintenance_work_mem and fsync=off and it does not seem to have a great effect. After again 5 hours, during index creation, disk and cpu are barely used: 95% idle and 2-3 MB/s writes (150 reads/s, 90 writes/s).
Sébastien
On Thu, Sep 13, 2012 at 1:29 AM, John R Pierce
<pierce@hogranch.com> wrote:
On 09/12/12 10:01 PM, Sébastien Lorion wrote:
pgbench initialization has been going on for almost 5 hours now and still stuck before vacuum starts .. something is definitely wrong as I don't remember it took so long first time I created the db....
pgbench initialization with a high scale factor, like the -s 10000 I frequently use, does take quite a few hours. you need a large maintenance_work_mem, or the create index phase will take a really long time to index the 150GB worth of tables its created.
