Re: [gentoo-user] SMP not working?

[kashani]

Nick Smith wrote:

actually the SMP is working, as in top shows 2 CPU's.  but when i do
an emerge --sync CPU1 stays pegged at 99% and CPU0 stays below 1% the
entire time. this is a dual 200mhz U2 Sparc system, i was just
wondering if this was normal or is there something messed up in my
config?

and sorry for posting this in the normal user list, i figured i would
get more responses here as i dont think this is specific to Sparc
hardware, but i could be wrong.


Checked it out on one of my dual servers. There is never more than a 
single process running, emerge, then rsync, then emerge, so the second 
CPU never gets used. However I did see the second CPU doing some 
kjournald while data was being written to the filessytem so it's not a 
total loss on a dual CPU system. :)


kashani
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Re: [gentoo-user] SMP not working?

[Iain Buchanan]

On Mon, 2006-02-13 at 19:58 -0500, Nick Smith wrote:
 actually the SMP is working, as in top shows 2 CPU's.  but when i do
 an emerge --sync CPU1 stays pegged at 99% and CPU0 stays below 1% the
 entire time. this is a dual 200mhz U2 Sparc system, i was just
 wondering if this was normal or is there something messed up in my
 config?

AFAIK, certain operations can't use both CPU's because of the way
they're written.  rsync (used by emerge --sync) may be one.  At least
you'll use one cpu for rsync, and the other cpu for everything else you
may be doing at the time, so you'll still get a performance advantage.

 and sorry for posting this in the normal user list, i figured i would
 get more responses here as i dont think this is specific to Sparc
 hardware, but i could be wrong.

No worries!  I don't know what the official word is, but this list is
more a general usage list, rather than gentoo specific issues.
-- 
Iain Buchanan iain at netspace dot net dot au

How come financial advisors never seem to be as wealthy as they
claim they'll make you?

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