Re: [PERFORM] Tryint to match Solaris-Oracle performance with

2004-09-19 Thread markir
Hi Mischa, You probably need to determine whether the bottleneck is cpu or disk (should be easy enough!) Having said that, assuming your application is insert/update intensive I would recommend: - mount the ufs filesystems Pg uses *without* logging - use postgresql.conf setting

Re: [PERFORM] Tryint to match Solaris-Oracle performance with directio?

2004-09-18 Thread Tom Lane
Mischa Sandberg [EMAIL PROTECTED] writes: Our product (Sophos PureMessage) runs on a Postgres database. Some of our Solaris customers have Oracle licenses, and they've commented on the performance difference between Oracle and Postgresql on such boxes. In-house, we've noticed the 2:1

Re: [PERFORM] Tryint to match Solaris-Oracle performance with directio?

2004-09-18 Thread Shachar Shemesh
Mischa Sandberg wrote: In the meantime, what I gather from browsing mail archives is that postgresql on Solaris seems to get hung up on IO rather than CPU. Well, people more knowledgeable in the secrets of postgres seem confident that this is not your problem. Fortunetly, however, there is a

Re: [PERFORM] Tryint to match Solaris-Oracle performance with directio?

2004-09-17 Thread Gaetano Mendola
Mischa Sandberg wrote: In the meantime, what I gather from browsing mail archives is that postgresql on Solaris seems to get hung up on IO rather than CPU. Furthermore, I notice that Oracle and now MySQL use directio to bypass the system cache, when doing heavy writes to the disk; and Postgresql