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. -SteveReceived on Fri May 06 2005 - 18:12:05 UTC
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