Re: Load distributed checkpoint
От
ITAGAKI Takahiro
Тема
Re: Load distributed checkpoint
Дата
Msg-id
20061208134120.6658.ITAGAKI.TAKAHIRO@oss.ntt.co.jp
Ответ на
Re: Load distributed checkpoint (Takayuki Tsunakawa)
Список
Дерево обсуждения
Load distributed checkpoint ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
Re: Load distributed checkpoint "Jim C. Nasby" <jim@nasby.net>
Re: Load distributed checkpoint "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
Re: Load distributed checkpoint Tom Lane <tgl@sss.pgh.pa.us>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint "Simon Riggs" <simon@2ndquadrant.com>
Re: Load distributed checkpoint Martijn van Oosterhout <kleptog@svana.org>
Re: Load distributed checkpoint "Simon Riggs" <simon@2ndquadrant.com>
Re: Load distributed checkpoint "Jim C. Nasby" <jim@nasby.net>
Re: Load distributed checkpoint ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint "Jim C. Nasby" <jim@nasby.net>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint Tom Lane <tgl@sss.pgh.pa.us>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint Heikki Linnakangas <heikki@enterprisedb.com>
Re: Load distributed checkpoint "Jim C. Nasby" <jim@nasby.net>
Re: Load distributed checkpoint Tom Lane <tgl@sss.pgh.pa.us>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint "Jim C. Nasby" <jim@nasby.net>
Re: Load distributed checkpoint "Zeugswetter Andreas ADI SD" <ZeugswetterA@spardat.at>
Re: Load distributed checkpoint ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>
Re: Load distributed checkpoint Gregory Stark <stark@enterprisedb.com>
Re: Load distributed checkpoint Bruce Momjian <bruce@momjian.us>
Re: Load distributed checkpoint Ron Mayer <rm_pg@cheapcomplexdevices.com>
Re: Load distributed checkpoint Gregory Stark <stark@enterprisedb.com>
Re: Load distributed checkpoint Tom Lane <tgl@sss.pgh.pa.us>
Re: Load distributed checkpoint "Jim C. Nasby" <jim@nasby.net>
Re: Load distributed checkpoint "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
Re: Load distributed checkpoint "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
Re: Load distributed checkpoint Brad Nicholson <bnichols@ca.afilias.info>
Re: Load distributed checkpoint "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
Re: Load distributed checkpoint ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>
Re: Load distributed checkpoint Ron Mayer <rm_pg@cheapcomplexdevices.com>
Re: Load distributed checkpoint "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
Re: Load distributed checkpoint "Zeugswetter Andreas ADI SD" <ZeugswetterA@spardat.at>
Re: Load distributed checkpoint "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
Re: Load distributed checkpoint "Inaam Rana" <inaamrana@gmail.com>
Re: Load distributed checkpoint ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp>
Re: Load distributed checkpoint Greg Smith <gsmith@gregsmith.com>
"Takayuki Tsunakawa" wrote: > I'm afraid it is difficult for system designers to expect steady > throughput/response time, as long as PostgreSQL depends on the > flushing of file system cache. How does Oracle provide stable > performance? > Though I'm not sure, isn't it the key to use O_SYNC so that write()s > transfer data to disk? AFAIK, other databases use write() and fsync() in combination. They call fsync() immediately after they write buffers in some small batches. Otherwise, they uses asynchronous and direct I/O options. Therefore, dirty pages in kernel buffers are keeped to be low at any time. Regards, --- ITAGAKI Takahiro NTT Open Source Software Center
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