Hi, Greg, 在 2005-06-11六的 13:49 +0930,Greg 'groggy' Lehey写道: > On Friday, 10 June 2005 at 18:05:37 +0100, Steve Roome wrote: > > We're using mostly: > > > > 5.4-STABLE FreeBSD 5.4-STABLE #0: Mon Jun 6 12:22:18 BST 2005 > > > > This is on a Dell PowerEdge 2850. (2 * 2.8 GHz Xeons, 4GB ram, disks), > > we've been keeping up with stable because supposedly all these new > > fixes to threading will help us out here. > > What's the current malloc config for 5.4? Last time I saw this kind > of comparison, it proved to be due to malloc debugging. That was on > -CURRENT, though. See http://www.lemis.com/grog/diary-dec2004.html#14 > for more details.
The malloc config for 5.4 is aj IIRC. Maybe we should do a gprof'ed build of mysql as well as ktrace dump of a mysql daemon to figure out what was happening? Actually the test team at my company has found the exact problem within a recent FreeBSD (5.4-R) vs CentOS (4.0) benchmark test, but they have not arranged the same hardware for me yet to figure out why. Cheers, -- Xin LI <delphij delphij net> http://www.delphij.net/
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