On Fri, May 06, 2005 at 11:35:29AM -0700, Kris Kennaway wrote: > Kernel was built without INVARIANTS and other debugging options, > without ADAPTIVE_GIANT (which causes about a 200% performance penalty > on system time in my testing, and has marginal impact on real or user > time) and with 4BSD scheduler (ULE causes spontaneous reboots on this > machine). The e4500 uses the esp SCSI controller, which runs > without Giant.
I'm rather suprised that ADAPTIVE_GIANT causes so much performance degradation in your testing. On my, admittedly much more modest system, using ADAPTIVE_GIANT shaves about 6 minutes off a 'make world'. Haven't really done any research on why that is. I was just suprised by your 200% performance penalty. -Steve _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-smp To unsubscribe, send any mail to "[EMAIL PROTECTED]"
