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October 26th, 2006 18:00
Optiplex 280 16-bit slowdown
I'm recently moved to a Optiplex 280 (2x3.2G CPU) for firmware development, using an SDS 68000 cross-compiler (v7.4) used via MS Visual Studio 6. When I compile with it, its 10x slower than the Dimension 2350 (1x2.2G) that I previously used. I've tried a lot of things unsuccessfully to resolve this (see below), and am looking for other things to try.
- Both systems have XP Pro w/SP2 installed.
- the Optiplex had been previously tasked as a server, though the XP Pro install is new.
- all drivers/BIOS/etc. are current.
- Intel's CPU diagnostics say all is well (clock & bus freq., etc.)
- Dell's diagnostics find no problems.
- Norton Antivirus is in use, but I turn off its real-time elements while testing.
- there are no other slowdowns recognized (though some may be occurring).
- CPU usage meters show almost no CPU usage during compile!
- a MS hotfix for MS's KB MS 896256 (XP SP2 multicore slowdown) was applied
- MS 320694, 304106 & others (16-bit problems in XP) led me to verify the NTVDM.* files were correct.
- CPUKILLER was tried in case it was a timing loop problem (no effect).
Any further suggestions, besides downgrading??
PS: I can't find info if it is possible to change the priority and affinity (# of CPUs to use) for programs to start at via the registry. (Just something else to try.)
Thanks,
KpK
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kpkenney
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October 30th, 2006 14:00