Alain G. Fabry alainfa...@belgacom.net writes (in *extremely* long
lines, which I wrapped for him):
To make a long story shorteverything worked fine on my system
(7.0-RELEASE FreeBSD). Last night I was updating stuff on my windoswXP
guess (under qemu) and performed a clean shutdown.
This morning, after bringing back up my system it has been unbearably
slow. Without doing anyting to FreeBSD, it suddenly started working in
SMP mode - recognizing my 2 processors. Before, it never did
this...and looking at the speed it is going now, I'm happy it didn't.
After googling a bit, I tried to disable ACPI in order to fall back to
single processor mode, but my system keeps acting up like it never did
before. Very slow booting and KDM/KDE loading. Once up it's ok until I
run a portupgrade or such.
That's weird all right. My first guess would be interrupt problems.
vmstat(8) will show you what is happening on that front.
1. What are some suggestions as to make it run 'normal' again?
You need to understand what's going wrong first.
2. Is it possible to make it actually run better in SMP mode?
Your system has an SMP kernel, I presume? [The GENERIC kernel does,
these days.]
3. Can my updates on the Qemu WindowsXP host make my FreeBSD system
suddenly recognize the 2nd CPU? - this doesn't make sense to me but
that's the only thing I worked on last night.
Vanishingly unlikely, but not completely impossible.
I hope I can get some pointers as to what could have caused this and
what I can do to get it back to the way it was.
I wouldn't be surprised if it were a hardware problem, which can be
tricky to trace down from the software side.
--
Lowell Gilbert, embedded/networking software engineer, Boston area
http://be-well.ilk.org/~lowell/
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