Re: testing HS/SR - 1 vs 2 performance

Simon Riggs <simon@2ndquadrant.com>

From: Simon Riggs <simon@2ndQuadrant.com>

To: Erik Rijkers <er@xs4all.nl>

Cc: Tom Lane <tgl@sss.pgh.pa.us>, Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>, pgsql-hackers@postgresql.org

Date: 2010-04-22T22:45:47Z

Lists: pgsql-hackers

Attachments

xlog_prefetch.patch (text/x-patch) patch

On Thu, 2010-04-22 at 20:39 +0200, Erik Rijkers wrote:
> On Sun, April 18, 2010 13:01, Simon Riggs wrote:

> any comment is welcome...

Please can you re-run with -l and post me the file of times

Please also rebuild using --enable-profile so we can see what's
happening.

Can you also try the enclosed patch which implements prefetching during
replay of btree delete records. (Need to set effective_io_concurrency)

Thanks for your further help.

-- 
 Simon Riggs           www.2ndQuadrant.com