On Wed, Jul 1, 2015 at 1:38 PM, Simon Riggs <simon@2ndquadrant.com> wrote: > > On 1 July 2015 at 09:00, Amit Kapila <amit.kapila16@gmail.com> wrote: >> >> >> I think it will be better to partition it or use it in some other way to avoid >> two concurrent writers block at it, however if you want to first see the >> test results with this, then that is also okay. > > > Many updates would be on same page, so partitioning it would need to be at least 4-way to be worth doing. Maybe we could stripe into 512 bye pages.
>
Sure, it makes sense to try that way, once you have that ready, I can
try this out along with ProcArrayLock patch to see the impact.
Seems sensible to measure what the new point of contention is with both before doing anything further.
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Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services