Re: testing HS/SR - 1 vs 2 performance

On Sat, Apr 10, 2010 at 8:23 AM, Erik Rijkers <er@xs4all.nl> wrote:
> I understand that in the scale=1000 case, there is a huge
> cache effect, but why doesn't that apply to the pgbench runs
> against the standby?  (and for the scale=10_000 case the
> differences are still rather large)

I guess that this performance degradation happened because a number of
buffer replacements caused UpdateMinRecoveryPoint() often. So I think
increasing shared_buffers would improve the performance significantly.

Regards,

-- 
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center