I'm using kstat for drawing CPU part of boot chart (see my previous posts). I need cpu values for "user","nice","system","idle","iowait" in such order (sample output):
I've written the small kstat utility and added its call in a bootchartd script (utility writes /var/log/bootchart/proc_stat.log):
Sample boot chart for MilaX:
cpu 8 0 141 313 230 0 0
I've written the small kstat utility and added its call in a bootchartd script (utility writes /var/log/bootchart/proc_stat.log):
#include <kstat.h> #include <sys/sysinfo.h> #include <stdio.h> #include <string.h> static kstat_ctl_t *kc; static kstat_t *ksp; static unsigned int cpu_user, cpu_system, cpu_nice, cpu_idle, cpu_iowait; int main(int argc, char **argv) { cpu_stat_t *cpu_stat; kc = kstat_open(); if (kc != NULL) { ksp = kstat_lookup(kc, "cpu_stat", 0, "cpu_stat0"); if (ksp != NULL && ksp->ks_type == KSTAT_TYPE_RAW) { if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data_size == sizeof(cpu_stat_t)) { cpu_stat = (cpu_stat_t *)ksp->ks_data; cpu_user=cpu_stat->cpu_sysinfo.cpu[CPU_USER]; cpu_nice=cpu_stat->cpu_sysinfo.cpu[CPU_WAIT]; cpu_system = cpu_stat->cpu_sysinfo.cpu[CPU_KERNEL] ; cpu_iowait=cpu_stat->cpu_syswait.iowait; cpu_idle=cpu_stat->cpu_sysinfo.cpu[CPU_IDLE]; printf("cpu %d %d %d %d %d 0 0\n", cpu_user,cpu_nice,cpu_system,cpu_idle,cpu_iowait); } } } }
Sample boot chart for MilaX:
6 comments:
Really good stuff Alex. Keep up the good work. It's inspirational.
I would like to make one of EON but I'm a bit short on time.
Would you mind sharing the kstat script?
Hey Alex,
Great innovation, I'm following your work in my holiday time.
Not sure if I emailed you yet. However, we have test ISO's of AuroraUX for downloads. I hope we can work togther more to share our work for the greater good as soon as I get back to a workstation :)
Best Regards,
Edward O'Callaghan.
http://auroraux.blastwave.org/
Utility source added
Alex can you take it further and get the /proc linux 2.6 kernel specific data somehow?
How easy would it be to get some of this work made up into a package that anyone could install on OpenSolaris though IPS to get info about what's taking up all the time during boot process?
I'm currently taking 2 mins to boot, which I thought was bad but it's not far off some of your example charts, so I'm relieved! Still, with linux now on a sub 30 second boot time, there is lots of room for improvement!
Keep up the good work!
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