Hi All,
I have taken over the maintenance of a server farm , recently. 2 webserver on db server. They are quite powerful 2 processor xeon w/ 6Gig of ram .
Couple of days ago we had a serious performance hit and the db server (pg. v7.4) was overloaded w/ something in a way that operating system was almost not able to respond or in cases it did not.
After some analysis i suspect that there is a query that takes up to 1 second and that is the cause. Upon each page loading this query fires and takes the one second and blocks the page to load completly . The load was roughly ~300 connections in one minute .
So here are my questions :
· Why does the second and the later queries take the whole on second if the dataset is the same . Shouldn’t PG realise that the query is the same so i give the user the same resultset ?
· How do I know if one query blocks the other ?
· Is there a way to log the long running queries in 7.4 ? If not is it available in any newer version ?
thanks for your help !
Üdvözlettel/kind regards,
Faludi, Gábor
FITS Magyarország Kft.
http://www.FITS.hu
Tel.:+36 30 4945862
Email: falu@fits.hu
Ingyenes videó tanfolyamok(Excel,Access,Word) : http://www.fits.hu/trainings
