Re: Trying to minimize the impact of checkpoints
От | Jan Wieck |
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Тема | Re: Trying to minimize the impact of checkpoints |
Дата | |
Msg-id | 40CB3CFA.7040201@Yahoo.com обсуждение исходный текст |
Ответ на | Re: Trying to minimize the impact of checkpoints (jao@geophile.com) |
Ответы |
Re: Trying to minimize the impact of checkpoints
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Список | pgsql-general |
On 6/11/2004 2:02 PM, jao@geophile.com wrote: > Quoting jao@geophile.com: > >> When a checkpoint occurs, all operations slow way, way down. >> The attached spreadsheet (xls file, prepared in OO so unlikely >> to be dangerous) shows a run of a few hours, and the various spikes >> every 25-30 minutes seem consistent with checkpointing. The >> application is doing 1/2 reads and 1/2 inserts during this time. > > Sorry for being cryptic in my message. The spreadsheet contains > iostat output. Did you try to play with the background writer config options (new in 7.5) at all? Jan -- #======================================================================# # It's easier to get forgiveness for being wrong than for being right. # # Let's break this rule - forgive me. # #================================================== JanWieck@Yahoo.com #
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