[Freeswitch-users] What FS is doing when idle?

[Sergey Okhapkin]

A program should not be visible in "top" when idle. That's my point.

On Tuesday 02 March 2010, Anthony Minessale wrote:
> I guess if you insist, you have 4 bad boxes with 4 bad kernels, and I bet
> none of them are Centos 5.3
> if you can reproduce it on a box I can visit (Centos 5.3 would be nice),
> put in my ssh key and i'll come and look.
>
> Be sure to remember, as you continue to add to this thread that you are
> complaining about FS using 2% of your cpu......
> That's somewhat amusing to me.
>
> On Tue, Mar 2, 2010 at 12:23 PM, Giovanni Maruzzelli 
<gmaruzz at celliax.org>wrote:
> > Sergey,
> >
> > that's not a problem, is how FS works.
> >
> > That load on the CPU when idle is actually not important. Is just the
> > minimum, like in a carburettor.
> >
> > If you put it under load, you will see that there will need some
> > serious load (many calls) to have it ramp up the cpu usage.
> >
> > -giovanni
> >
> > On Tue, Mar 2, 2010 at 7:16 PM, Sergey Okhapkin
> >
> > <sos at sokhapkin.dyndns.org> wrote:
> > > I see the same problem on 4 absolutely different boxes with different
> >
> > linux
> >
> > > kernels.
> > >
> > > On Tuesday 02 March 2010, Anthony Minessale wrote:
> > >> Well, there you go.
> > >> your box is having a hard time doing a simple 1ms sleep in a loop for
> >
> > the
> >
> > >> centralized core timer.
> > >>
> > >> It's either your kernel or your box.  My box and every box I have do
> > >> not have that problem so you may want to consider a new one.
> > >>
> > >> FreeSWITCH is FREE so give it a good home.
> > >>
> > >> The good news is, you can make upwards of 1500 calls on that same 2%
> > >> of
> >
> > cpu
> >
> > >> usage.
> > >>
> > >>
> > >>
> > >> On Tue, Mar 2, 2010 at 11:51 AM, Sergey Okhapkin
> > >>
> > >> <sos at sokhapkin.dyndns.org>wrote:
> > >> > FS spends half of CPU here (main thread):
> > >> >
> > >> > #0  0xffffe424 in __kernel_vsyscall ()
> > >> > #1  0xb7a82781 in select () from /lib/libc.so.6
> > >> > #2  0xb7e392eb in apr_sleep () from
> > >> > /opt/freeswitch/lib/libfreeswitch.so.1 #3  0x00000000 in ?? ()
> > >> >
> > >> > The second half is spent here:
> > >> >
> > >> > #0  0xb7d50946 in clock_nanosleep () from /lib/librt.so.1
> > >> > #1  0xb7e0fa7d in softtimer_runtime () at src/switch_time.c:155
> > >> > #2  0xb7dc585a in switch_loadable_module_exec (thread=0xb7101fb8,
> > >> > obj=0xb7101da8) at src/switch_loadable_module.c:96
> > >> > #3  0xb7e379a8 in dummy_worker () from
> > >> > /opt/freeswitch/lib/libfreeswitch.so.1
> > >> >
> > >> > On Tuesday 02 March 2010, Moises Silva wrote:
> > >> > > ps -LlFm -p `pidof freeswitch`
> > >> > >
> > >> > > That shows you CPU usage per FreeSWITCH thread
> > >> > >
> > >> > > Then
> > >> > >
> > >> > > pstack `pidof freeswitch`
> > >> > >
> > >> > > That shows the stack trace of every FreeSWITCH thread and then you
> >
> > can
> >
> > >> > find
> > >> >
> > >> > > exactly what is doing.
> > >> >
> > >> > _______________________________________________
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> >
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> > >
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> >
> > --
> > Sincerely,
> >
> > Giovanni Maruzzelli
> > Cell : +39-347-2665618
> >
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