| From: | "Jeremy M(dot) Guthrie" <jeremy(dot)guthrie(at)berbee(dot)com> |
|---|---|
| To: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Vacuum performance question |
| Date: | 2003-08-14 17:55:32 |
| Message-ID: | 200308141255.36225.jeremy.guthrie@berbee.com |
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| Lists: | pgsql-performance |
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My database is approximately 8gb in size. My application is 24/7. I'm
constantly cycling through data. I analyze every 15 minutes but I'm noticing
that during a vacuum the database becomes extremely sluggish.
In some cases the operation of my software goes from 1-3 second runtime to
300+ seconds during a vacuum.
Should I expect this with a vacuum? I've done reading online where people say
they see only a 10% decrease in speed. Is this supposed to be the norm?
I've allocated 196MB of RAM to vacuums.
The system is a dual P4-2.4ghz w/ 1.5 gig of RAM w/ 36 gig of RAID mirrored
disk.
I'm runing 7.3.2 and I am upgrading to 7.3.3 next week.
Please advise.
- --
Jeremy M. Guthrie
Systems Engineer
Berbee
5520 Research Park Dr.
Madison, WI 53711
Phone: 608-298-1061
Berbee...Decade 1. 1993-2003
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