03-01-2002
The machine has 2 GB RAM and 2 x 168 Mhz CPU.
The one before was smaller and worked better.
Top shows 99% Kernel CPU state. Average 24h is about 80%!
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LEARN ABOUT NETBSD
cpuctl
CPUCTL(8) BSD System Manager's Manual CPUCTL(8)
NAME
cpuctl -- program to control CPUs
SYNOPSIS
cpuctl command [arguments]
DESCRIPTION
The cpuctl command can be used to control and inspect the state of CPUs in the system.
The first argument, command, specifies the action to take. Valid commands are:
identify cpu Output information on the specified CPU's features and capabilities. Not available on all architectures.
list For each CPU in the system, display the current state and time of the last state change.
offline cpuno Set the specified CPU off line.
Unbound LWPs (lightweight processes) will not be executed on the CPU while it is off line. Bound LWPs will continue to be
executed on the CPU, and device interrupts routed to the CPU will continue to be handled. A future release of the system
may allow device interrupts to be re-routed away from individual CPUs.
At least one CPU in the system must remain on line.
online cpuno Set the specified CPU on line, making it available to run unbound LWPs.
ucode [file] This applies the microcode patch on all CPUs. The default filename is used if no filename is specified. The identify com-
mand prints the installed version on that CPU. On success the identify command show different ucode versions before and
after this command.
FILES
/dev/cpuctl control device
/libdata/firmware/x86/amd/
The directory to install the microcode file for AMD CPUs into. The default filename is microcode_amd.bin for CPU families 0x10
to 0x14. The default filename is microcode_amd_famXXh.bin where XX is the CPU family starting with 15 (hex). Get it from
http://www.amd64.org/support/microcode.html
EXAMPLES
Run
cpuctl identify 0
and you should see something like this:
cpu0: UCode version: 0x1000080
After applying the microcode patch with
cpuctl ucode
you can see with
cpuctl identify 0
that the patch got applied:
cpu0: UCode version: 0x1000083
SEE ALSO
psrset(8), schedctl(8)
HISTORY
The cpuctl command first appeared in NetBSD 5.0.
BSD
January 13, 2012 BSD