Re: syslog slowing the database?
От | Vivek Khera |
---|---|
Тема | Re: syslog slowing the database? |
Дата | |
Msg-id | x78yi876yz.fsf@yertle.int.kciLink.com обсуждение исходный текст |
Ответ на | syslog slowing the database? (Greg Spiegelberg <gspiegelberg@cranel.com>) |
Список | pgsql-performance |
>>>>> "GS" == Greg Spiegelberg <gspiegelberg@cranel.com> writes: GS> I've been waiting all day for a pg_restore to finish on a test system GS> identically configured as our production in hardware and software GS> with the exception prod is 7.3.5 and test is 7.4.1. GS> The file it's restoring from is about 8GB uncompressed from a GS> "pg_dump -b -F t" and after 2 hours the directory the database is in GS> contains only 1GB. iostat reported ~2000 blocks written every 2 GS> seconds to the DB file system. Have you considered increasing the value of checkpoint_segments to something like 50 or 100 during your restore? It made a *dramatic* improvement on my system when I did the same migration. -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Vivek Khera, Ph.D. Khera Communications, Inc. Internet: khera@kciLink.com Rockville, MD +1-301-869-4449 x806 AIM: vivekkhera Y!: vivek_khera http://www.khera.org/~vivek/
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