Hopefully when these kernel improvements filter through to ubuntu repos we'll see some improvement on our postgres performance. Particularly when we have many connections open (who are all synched using sysv ipc). Something to look forward to ...
---------- Forwarded message ---------- From: Shaun Thomas <stho...@optionshouse.com> Date: 26 March 2013 18:59 Subject: Re: [PERFORM] [OT] linux 3.10 kernel will improve ipc,sysv semaphore scalability To: Andrea Suisani <sick...@opinioni.net> Cc: "pgsql-performa...@postgresql.org" <pgsql-performa...@postgresql.org> On 03/26/2013 08:04 AM, Andrea Suisani wrote: > TPS: > 100 users: 1257.21 (vanilla) 2805.06 (v3 patchset) > 400 users: 1437.57 (vanilla) 2664.67 (v3 patchset) > 800 users: 1236.89 (vanilla) 2750.73 (v3 patchset) Wow, I like the look of that. I wonder how this reacts with disabled autogrouping and increasing sched_migration_cost. If the completely fair scheduler has less locking contention with this patch-set, those tweaks may not even be necessary. I need to see if I can find a system to test on. -- Shaun Thomas OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604 312-676-8870 stho...@optionshouse.com ______________________________________________ See http://www.peak6.com/email_disclaimer/ for terms and conditions related to this email -- Sent via pgsql-performance mailing list (pgsql-performa...@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance _______________________________________________ Mailing list: https://launchpad.net/~dhis2-devs Post to : dhis2-devs@lists.launchpad.net Unsubscribe : https://launchpad.net/~dhis2-devs More help : https://help.launchpad.net/ListHelp