Jack Orenstein wrote: > Bruce Momjian wrote: > > [EMAIL PROTECTED] wrote: > > > >>4. I understand that a "background writer" is being contemplated for > >>7.5. Will that replace or augment the checkpoint process? Any > >>comments on how that work will apply to my problem would be > >>appreciated. I wouldn't mind seeing the average performance, > >>(without the spikes) go up -- let's say -- 10%, in exchange for > >>more uniform performance. These spikes are a real problem. > > > > > > The background writer is designed to address your specific problem. We > > will stil checkpoint, but the spike should be greatly minimized. > > > > Thanks. Do you know when 7.5 is expected to be released?
3-6 months. > Until then, is a workaround known? Also, are the delays I'm seeing out of the > ordinary? > I'm looking at one case in which two successive transactions, each updating a > handful of > records, take 26 and 18 *seconds* (not msec) to complete. These transactions > normally complete > in under 30 msec. Wow. Others might know the answer to that. -- Bruce Momjian | http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 359-1001 + If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square, Pennsylvania 19073 ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html
