| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | pgsql-patches(at)postgreSQL(dot)org |
| Cc: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com> |
| Subject: | WIP: 2nd-generation buffer ring patch |
| Date: | 2007-05-29 17:52:08 |
| Message-ID: | 15563.1180461128@sss.pgh.pa.us |
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| Lists: | pgsql-patches |
Updated version of Heikki's buffer ring patch, as per my comments here:
http://archives.postgresql.org/pgsql-patches/2007-05/msg00449.php
The COPY IN part of the patch is not there, pending resolution of
whether we think it adds enough value to be worth uglifying
heap_insert's API for. Also, I tentatively reduced the threshold
at which heapscans switch to ring mode to NBuffers/16; that probably
needs more thought. Lastly, I haven't done anything about making
non-btree indexes honor the access strategy during VACUUM scans.
regards, tom lane
| Attachment | Content-Type | Size |
|---|---|---|
| buffer-ring-2.patch.gz | application/octet-stream | 15.0 KB |
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