Re: [Testperf-general] pg_autovacuum w/ dbt2

Ok, but what I'm curious to do is see if you run the non-pg_autovacuum 
test for a "long time" (4 hours? more?) when does it get slower that 
running with pg_autovacuum.  And, can you demonstrate that running the 
tests with pg_autovacuum for a long time (say 4 hours) that the 
performance stays steady.

Also, I would very much like to see this test run with pg_autovacuum and 
it's vacuum delay settings enabled.


Matthew

ps: I know time is limited and these tests take a lot of time to run, so 
please take my requests with a grain of salt, all I'm saying is that I 
think these would be interesting results to see.


Mark Wong wrote:

>Yeah, same hardware and database configuration.
>
>No manual vacuum commands before.  The decline in performance has been
>pretty consistent in all my previous tests and people have told me on
>many occasions that the decline in performance was probably because I
>was never using vacuum...
>
>Mark
>
>On Fri, Jan 07, 2005 at 08:48:52AM -0500, Matthew T. O'Connor wrote:
>  
>
>>I'm curious, the original run you posted with 3825 NOTPM is still 17% 
>>faster than the latest pg_autovacuum run which shows 3280 NOTPM.  Is 
>>this on the same hardware?  Also, did the original non-pg_autovacuum run 
>>any manual vacuum commands?  Also, does the non-pg_autovacuum run start 
>>slowing down after a while? The graphs look like there is a slight 
>>decline in performance as time goes on, what happens if you double the 
>>length of the test?
>>
>>Thanks for doing the testing!
>>
>>Matthew
>>    
>>