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2.4GHz Xeon Processor

S

stva

Junior Member

I've just upgraded my system with a SuperMicro P4DP6 motherboard with 2.4GHz Xeon, DDR SDRAM, and Intel E7500 chipset, but I see no improvement whatsoever, over a 933MHz P3 with SDRAM, in the time to execute the Windows 2000 network protocol stack. I'm measuring this from a Miniport network driver that passes packets up and waits for the OS to get new packets from the OS cache and pass them down the protocol stack to me, so there's no I/O involved, just code execution. Does anyone know what might be going on? Would I do better with a ServerWorks chipset or an AMD processor?

I suspect that the OS code jumps around a lot so the read aheads the processor does keep getting flushed and reloaded, plus the OS code doesn't re-execute soon enough to still be in the L2 cache the next time it comes around. So instructions and data are always coming from memory, which can't feed the 2.4GHz processor any faster than a 933MHz processor.

Thanks for any thoughts,

Steve Adams
 
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