| From: | KONDO Mitsumasa <kondo(dot)mitsumasa(at)lab(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
| Cc: | Greg Smith <greg(at)2ndQuadrant(dot)com>, didier <did447(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Improvement of checkpoint IO scheduler for stable transaction responses |
| Date: | 2013-07-22 10:14:10 |
| Message-ID: | 51ED05F2.3090400@lab.ntt.co.jp |
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| Lists: | pgsql-hackers |
(2013/07/21 4:37), Heikki Linnakangas wrote:
> Mitsumasa-san, since you have the test rig ready, could you try the attached
> patch please? It scans the buffer cache several times, writing out all the dirty
> buffers for segment A first, then fsyncs it, then all dirty buffers for segment
> B, and so on. The patch is ugly, but if it proves to be helpful, we can spend the
> time to clean it up.
Thank you! It is interesting code, I test it.
By the way, my campany's colleague helps us to testing. If you have other idea,
please send me patch or methods.
Best regards,
--
Mitsumasa KONDO
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