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04-11-2008, 03:11 AM
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 Re: WAL: O_DIRECT and multipage-writer Hi, Mark. Mark Wong <markw@osdl.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.takahiro@lab.ntt.co.jp> NTT Cyber Space Laboratories ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to majordomo@postgresql.org)      |
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04-11-2008, 03:12 AM
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| Re: WAL: O_DIRECT and multipage-writer On Wed, Mar 23, 2005 at 01:55:46PM +0900, ITAGAKI Takahiro wrote: > Hi, Mark. > > Mark Wong <markw@osdl.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. That's 'log_min_messages = debug1' right? Maybe I should give it another go with that set back to the default. Thanks, Mark ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to majordomo@postgresql.org |
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