Re: [PERFORM] Commit slower on faster PC

2006-07-13 Thread Koth, Christian (DWBI)
Hello all, thanks a lot for your help so far. You all where right about the IDE drive is somehow caching the data. See the test results below. I also get different tps values every time I run pgbench on PC1 (between 300 and 80 tps for 100 transactions). I don't think it's a good idea to disable

Re: [PERFORM] Commit slower on faster PC

2006-07-12 Thread Bruno Wolff III
On Wed, Jul 12, 2006 at 10:16:40 -0600, "Koth, Christian (DWBI)" <[EMAIL PROTECTED]> wrote: > > I have noticed a strange performance behaviour using a commit statement on > two different machines. On one of the machines the commit is many times > faster than on the other machine which has fast

Re: [PERFORM] Commit slower on faster PC

2006-07-12 Thread Joshua D. Drake
On Wednesday 12 July 2006 09:16, Koth, Christian (DWBI) wrote: > Hi, > > please help me with the following problem: > > I have noticed a strange performance behaviour using a commit statement on > two different machines. On one of the machines the commit is many times > faster than on the other mac

Re: [PERFORM] Commit slower on faster PC

2006-07-12 Thread D'Arcy J.M. Cain
On Wed, 12 Jul 2006 10:16:40 -0600 "Koth, Christian (DWBI)" <[EMAIL PROTECTED]> wrote: > I have noticed a strange performance behaviour using a commit statement on > two different machines. On one of the machines the commit is many times > faster than on the other machine which has faster hardwar

Re: [PERFORM] Commit slower on faster PC

2006-07-12 Thread Mark Lewis
The IDE drive is almost certainly lying about flushing data to the disk. Lower-end consumer drives often do. What this means is that commits will be a whole lot faster, but the database loses its ACID guarantees, because a power failure at the wrong moment could corrupt the whole database. If you

[PERFORM] Commit slower on faster PC

2006-07-12 Thread Koth, Christian (DWBI)
Hi, please help me with the following problem: I have noticed a strange performance behaviour using a commit statement on two different machines. On one of the machines the commit is many times faster than on the other machine which has faster hardware. Server and client are running always on