Hello,
Thanks Dan. This is the best. I also tried using kvm, but code is longer and the program shall run as root. I'm working on a daemon which shall evaluate CPU load and SHALL not run as root.
Best regards,
Jose-Marcio
Dan Nelson wrote:
In the last episode (Apr 02), Dag-Erling Smorgrav said:
Jose Marcio Martins da Cruz <[EMAIL PROTECTED]> writes:
Someone can send some pointers on how to measure global CPU load under FreeBSD from a C program ? I'm looking for values for idle/kernel/user, in a similar way as does top. Is there any pointer or doc ?. I'd like to avoir browsing top code.
Use sysctlbyname(3) to retrieve vm.loadavg, which is a struct loadavg (defined in <sys/resource.h>)
Actually the kern.cp_time variable might be better if you want idle/kernel/user values. It returns a long cp_time[CPUSTATES]; the states are listed in <sys/resource.h>. Top calculates percentages by keeping the previous interval values, calculating diffs, totaling up the diffs, and setting percentage[cpustate] = diff[cpustate]/totaldiff.
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