| From: | Vivek Khera <khera(at)kcilink(dot)com> |
|---|---|
| To: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: syslog slowing the database? |
| Date: | 2004-03-10 21:00:36 |
| Message-ID: | x78yi876yz.fsf@yertle.int.kciLink.com |
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| Lists: | pgsql-admin pgsql-performance |
>>>>> "GS" == Greg Spiegelberg <gspiegelberg(at)cranel(dot)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.
--
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Vivek Khera, Ph.D. Khera Communications, Inc.
Internet: khera(at)kciLink(dot)com Rockville, MD +1-301-869-4449 x806
AIM: vivekkhera Y!: vivek_khera http://www.khera.org/~vivek/
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