Messages in this thread | | | Subject | Re: [Bug 350] New: i386 context switch very slow compared to 2.4 due to wrmsr (performance) | Date | Tue, 18 Mar 2003 21:19:38 +0100 | From | Pascal Schmidt <> |
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On Tue, 18 Mar 2003 19:40:10 +0100, you wrote in linux.kernel:
> vendor_id : AuthenticAMD > cpu family : 6 > model : 6 > model name : AMD Athlon(tm) Processor > stepping : 2 > cpu MHz : 1409.946 > empty overhead=11 cycles > load overhead=5 cycles > I$ load overhead=5 cycles > I$ load overhead=5 cycles > I$ store overhead=826 cycles > > The Athlon XP shows really bad behavior when you store to the text area.
There seems to be a (surprising?) difference between AthlonXP model 6 and model 8:
processor : 0 vendor_id : AuthenticAMD cpu family : 6 model : 8 model name : AMD Athlon(tm) XP 1700+ stepping : 0
empty overhead=16 cycles load overhead=1 cycles I$ load overhead=2 cycles I$ load overhead=1 cycles I$ store overhead=81 cycles
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