Did we ever come to a conclusion about excessive SMP context switching under load?
--------------------------------------------------------------------------- Dave Cramer wrote: > Robert, > > The real question is does it help under real life circumstances ? > > Did you do the tests with Tom's sql code that is designed to create high > context switchs ? > > Dave > On Sun, 2004-05-02 at 11:20, Robert Creager wrote: > > Found some co-workers at work yesterday to load up my library... > > > > The sample period is 5 minutes long (vs 2 minutes previously): > > > > Context switches - avg max > > > > Default 7.4.1 code : 48784 107354 > > Default patch - 10 : 20400 28160 > > patch at 100 : 38574 85372 > > patch at 1000 : 41188 106569 > > > > The reading at 1000 was not produced under the same circumstances as the prior > > readings as I had to replace my device under test with a simulated one. The > > real one died. > > > > The previous run with smaller database and 120 second averages: > > > > Context switches - avg max > > > > Default 7.4.1 code : 10665 69470 > > Default patch - 10 : 17297 21929 > > patch at 100 : 26825 87073 > > patch at 1000 : 37580 110849 > -- > Dave Cramer > 519 939 0336 > ICQ # 14675561 > > > ---------------------------(end of broadcast)--------------------------- > TIP 7: don't forget to increase your free space map settings > -- 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 7: don't forget to increase your free space map settings