| From: | Shaun Thomas <sthomas(at)optionshouse(dot)com> |
|---|---|
| To: | Andrea Suisani <sickpig(at)opinioni(dot)net> |
| Cc: | "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: [OT] linux 3.10 kernel will improve ipc,sysv semaphore scalability |
| Date: | 2013-03-26 18:59:50 |
| Message-ID: | 5151F026.5010409@optionshouse.com |
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| Thread: | |
| Lists: | pgsql-performance |
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
sthomas(at)optionshouse(dot)com
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