Re: Really really slow select count(*) - Mailing list pgsql-performance

From felix
Subject Re: Really really slow select count(*)
Date
Msg-id AANLkTikN75hcCL5Nhgh8Z9c7ZLtduMdjsn07BgO_D_yZ@mail.gmail.com
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In response to Re: Really really slow select count(*)  (Shaun Thomas <sthomas@peak6.com>)
Responses Re: Really really slow select count(*)
Re: Really really slow select count(*)
List pgsql-performance


On Fri, Feb 4, 2011 at 5:35 PM, Shaun Thomas <sthomas@peak6.com> wrote:


vacuumdb -a -v -z &>vacuum.log

And at the end of the log, it'll tell you how many pages it wants, and how many pages were available.

this is the dev, not live. but this is after it gets done with that table:

CPU 0.00s/0.00u sec elapsed 0.00 sec.
INFO:  analyzing "public.fastadder_fastadderstatus"
INFO:  "fastadder_fastadderstatus": scanned 2492 of 2492 pages, containing 154378 live rows and 0 dead rows; 30000 rows in sample, 154378 estimated total rows

and there's nothing at the end of the whole vacuum output about pages

actual command:

vacuumdb -U postgres -W -v -z djns4 &> vacuum.log

I tried it with all databases too

?

thanks


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