Re: strange pauses
От | Adrian Moisey |
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Тема | Re: strange pauses |
Дата | |
Msg-id | 478EFAB0.30205@careerjunction.co.za обсуждение исходный текст |
Ответ на | Re: strange pauses (Greg Smith <gsmith@gregsmith.com>) |
Ответы |
Re: strange pauses
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Список | pgsql-performance |
Hi >> Search this list for references to "checkpoints". If you run >> vmstat/iostat for a bit you should see bursts of disk activity at >> those times. > > The most straightforward way to prove or disprove that the slow queries > line up with checkpoints is to set to checkpoint_warning to a high value > (3600 should work), which should log every checkpoint, and then see if > they show up at the same time in the logs. You guys were spot on. During these pauses the IO goes up high. I've got the following set: checkpoint_timeout = 5min checkpoint_warning = 3600s log_min_messages = info But I see nothing in the logs about checkpoints -- Adrian Moisey System Administrator | CareerJunction | Your Future Starts Here. Web: www.careerjunction.co.za | Email: adrian@careerjunction.co.za Phone: +27 21 686 6820 | Mobile: +27 82 858 7830 | Fax: +27 21 686 6842
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