Postgres Pro
Downloads
Home   >   mailing lists

Re: Let PostgreSQL's On Schedule checkpoint write buffer smooth spread cycle by tuning IsCheckpointOnSchedule? - Mailing list pgsql-hackers

From Amit Kapila
Subject Re: Let PostgreSQL's On Schedule checkpoint write buffer smooth spread cycle by tuning IsCheckpointOnSchedule?
Date
Msg-id CAA4eK1Kkf_vFAgfQfatj7mK3KWdoFj2RmDM-6QKo39Mj5Nx-kQ@mail.gmail.com
Whole thread Raw
In response to Re: Let PostgreSQL's On Schedule checkpoint write buffer smooth spread cycle by tuning IsCheckpointOnSchedule?  (Simon Riggs <simon@2ndQuadrant.com>)
Responses Re: Let PostgreSQL's On Schedule checkpoint write buffer smooth spread cycle by tuning IsCheckpointOnSchedule?  (Amit Kapila <amit.kapila16@gmail.com>)
List pgsql-hackers
Tree view
On Thu, Jul 2, 2015 at 4:16 PM, Simon Riggs <simon@2ndquadrant.com> wrote:
On 13 May 2015 at 09:35, Heikki Linnakangas <hlinnaka@iki.fi> wrote:
 
In summary, the X^1.5 correction seems to work pretty well. It doesn't completely eliminate the problem, but it makes it a lot better.

Agreed

Do we want to consider if wal_compression is enabled as that
can reduce the effect full_page_writes?


Also I am planning to run some tests for this patch, but not sure
if tps and or latency numbers by pgbench are sufficient or do you
people want to see actual read/write count via some form of
dynamic tracing (stap) as done by the reporter of this issue? 



With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com

pgsql-hackers by date:

Previous
From: Fujii Masao
Date:
Subject: pg_archivecleanup, and backup filename to specify as an argument
Next
From: Pavel Stehule
Date:
Subject: Re: raw output from copy