Re: [PERFORM] Linux/PostgreSQL scalability issue - problem with 8 cores

2008-01-04 Thread David Boreham
James Mansion wrote: Jakub Ouhrabka wrote: How can we diagnose what is happening during the peaks? Can you try forcing a core from a bunch of the busy processes? (Hmm - does Linux have an equivalent to the useful Solaris pstacks?) There's a 'pstack' for Linux, shipped at least in Red Hat distr

Re: [PERFORM] Linux/PostgreSQL scalability issue - problem with 8 cores

2008-01-04 Thread James Mansion
Jakub Ouhrabka wrote: How can we diagnose what is happening during the peaks? Can you try forcing a core from a bunch of the busy processes? (Hmm - does Linux have an equivalent to the useful Solaris pstacks?) James ---(end of broadcast)--- TIP

Re: [PERFORM] Commit takes a long time.

2008-01-04 Thread Simon Riggs
On Thu, 2008-01-03 at 11:35 -0500, Tom Lane wrote: > "Peter Childs" <[EMAIL PROTECTED]> writes: > > Using Postgresql 8.1.10 every so often I get a transaction that takes a > > while to commit. > > > I log everything that takes over 500ms and quite reguallly it says things > > like > > > 707.036 m

Re: [PERFORM] Commit takes a long time.

2008-01-04 Thread Peter Childs
On 03/01/2008, Tom Lane <[EMAIL PROTECTED]> wrote: > > "Peter Childs" <[EMAIL PROTECTED]> writes: > > Using Postgresql 8.1.10 every so often I get a transaction that takes a > > while to commit. > > > I log everything that takes over 500ms and quite reguallly it says > things > > like > > > 707.036