various rants about 7-currnet on AMD64
Walter Vaughan
wvaughan at steelerubber.com
Mon Oct 1 06:16:40 PDT 2007
Aryeh Friedman wrote:
> I had tried PAE before the upgrade (see "what cpu type to use for a
> intel duo e6850 (i386 or amd64)" in -questions for detail)... I had
> also tried removing a DIMM... none resolved any issues.
In My Opinion, 4 Gig is EVIL for the x86 world. This is not a FreeBSD issue as
well. When I was breaking in an 8 core factory Intel box I saw same things you
saw. I then installed on it's redundant backup Ubunutu. Same problems. Double
the memory, FreeBSD way much happier, and Ubunutu happier as well.
Actually right now I am running FreeBSD AMD64-64, and Ubunutu AMD64 7.04 on the
other since they are in semi-production. Acutally we're running a vmplayer image
of Freebsd 6.2 i386 as a guest on the Ubuntu box as well.
Unless you have more than 4 gigs of memory, 64bit addressing is extra overhead,
so pulling memory just slows things down more.
So don't run more than 3 Gig if you want to run in 32 bit addressing mode.
don't run less than 5 Gig if you want to run in 64 bit addressing mode.
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