| From: | ITAGAKI Takahiro <itagaki(dot)takahiro(at)lab(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | Mark Wong <markw(at)osdl(dot)org> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: WAL: O_DIRECT and multipage-writer |
| Date: | 2005-03-23 04:55:46 |
| Message-ID: | 20050323134912.387C.ITAGAKI.TAKAHIRO@lab.ntt.co.jp |
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| Lists: | pgsql-hackers pgsql-patches |
Hi, Mark.
Mark Wong <markw(at)osdl(dot)org> wrote:
> In light of this thread, have you compared the performance on
> Linux-2.4?
No, but I'm just testing my patch on Linux-2.4 with a middle-range server.
I will report the results sometime soon.
By the way, I found the debug option (XLOG_MULTIPAGE_WRITER_DEBUG) was enabled
in your prior benchmarks. It writes logs a lot.
I hope performance doesn't fall at least without debug.
> So the new baseline result with 8.0.1:
> Throughput: 3639.97
> Results with the patch but open_direct not set:
> Throughput: 3494.72
> Results with the patch and open_direct set:
> Throughput: 3489.69
---
ITAGAKI Takahiro <itagaki(dot)takahiro(at)lab(dot)ntt(dot)co(dot)jp>
NTT Cyber Space Laboratories
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