| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | pgsql-patches(at)postgreSQL(dot)org |
| Subject: | WIP: bufmgr rewrite per recent discussions |
| Date: | 2005-02-15 21:39:10 |
| Message-ID: | 17622.1108503550@sss.pgh.pa.us |
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| Lists: | pgsql-patches |
I don't feel this is quite ready to commit, but here it is if anyone
would like to try some performance testing. Using "pgbench -s 10"
on a single-CPU machine, I find this code a little slower than CVS tip
at shared_buffers = 1000, but noticeably faster (~10% speedup) at
10000 buffers. So it's not a dead loss for single-CPU anyway. What
we need now is some performance measurements on multi-CPU boxes.
The bgwriter algorithm probably needs more work, maybe some more GUC
parameters.
regards, tom lane
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