from http://wikitest.freebsd.org/MySQL > There have been several reports that running with the 4BSD > scheduler offers better scheduling for MySQL workloads > over the ULE scheduler.
Suse is not cleanly installed, it is my everyday test server, but I did nothing special to tune it. FreeBSD was recompiled to support 2 CPU and with ULE scheduler.
…_64 NTPL Schedulers comparsion. By request I made tests with 4BSD scheduler: InnoDB threads FreeBSD 6 ULE FreeBSD 6 4BSD 4BSD / ULE 1 483… 330.11 1.20 MyISAM threads FreeBSD 6 ULE FreeBSD 6 4BSD 4BSD / ULE 1 344.72 324.9 0.94 4….84 258.42 1.20 Interesting with 256 threads BSD scheduler looks better.