I punted and just did clockTicksPerSecond := float64(100) since I couldn't
get this to build correctly. It's supposed to be a statically linked binary
in a docker scratch container. Close enough, I guess.
On Thursday, January 18, 2018 at 7:45:14 PM UTC-8, Caleb Spare wrote:
>
> You can do it with cgo. I have some code that does this:
>
> // #include <unistd.h>
> import "C"
>
> func init() {
> clockTicksPerSec = float64(C.sysconf(C._SC_CLK_TCK))
> if clockTicksPerSec != 100 {
> log.Println("Unusual _SC_CLK_TCK value:",
> clockTicksPerSec)
> }
> }
>
> var clockTicksPerSec float64
>
> // later it normalizes things by clickTicksPerSec
>
> On Thu, Jan 18, 2018 at 5:55 PM, <andrew.geo...@gmail.com <javascript:>>
> wrote:
> > I want to find out how long a process has been running.
> >
> > I'm grabbing the starttime out of /proc/$pid/stat for a process. This is
> in
> > "in clock ticks (divide by sysconf(_SC_CLK_TCK))." according to
> > http://man7.org/linux/man-pages/man5/proc.5.html
> >
> > I also have Sysinfo.Uptime (seconds since boot). My plan was to subtract
> > proc starttime from uptime, but I need to first divide out the clock
> tick /
> > second to get my units right. I haven't been able to find a way to get
> this
> > value.
> >
> > I suspect that my approach is wrong and that there is probably a more
> > elegant way to do this.
> >
> > A
> >
> > --
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