| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Erik Rijkers <er(at)xs4all(dot)nl> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: testing HS/SR - 1 vs 2 performance |
| Date: | 2010-04-22 22:45:47 |
| Message-ID: | 1271976347.4161.61.camel@ebony |
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| Lists: | pgsql-hackers |
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
| Attachment | Content-Type | Size |
|---|---|---|
| xlog_prefetch.patch | text/x-patch | 5.1 KB |
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