Fwd: Re: [Asterisk-Users] Asterisk on FreeBSD

[Chris Albertson]

Your log file almost looks like a bug in Asterisk doesn't it?
Why call poll() with a zero timeout while passing only one FD?
and then why do the read when there is no data?

Read the man pages for all the system calls 

Take a look at the source  chan_sip.c

     /* Wait for sched or io */
                res = ast_sched_wait(sched);
                if ((res < 0) || (res > 1000))
                        res = 1000;
                res = ast_io_wait(io, res);
                ast_pthread_mutex_lock(&monlock);
                if (res >= 0) 
                        ast_sched_runq(sched);
                ast_pthread_mutex_unlock(&monlock);


OK so it looks like ast_sched_wait(sched) is returning 
zeroes  Take a look....

 {
        /*
         * Return the number of milliseconds 
         * until the next scheduled event
         */
        struct timeval tv;
        int ms;
        DEBUG(ast_log(LOG_DEBUG, "ast_sched_wait()\n"));
        if (!con->schedq)
                return -1;
        if (gettimeofday(&tv, NULL) < 0) {
                /* This should never happen */
                return 0;
        };
        ms = (con->schedq->when.tv_sec - tv.tv_sec) * 1000;
        ms += (con->schedq->when.tv_usec - tv.tv_usec) / 1000;
        if (ms < 0)
                ms = 0;
        return ms;

gettimeofday might be failing!! Why?  
I'd add a call to perror() after "his should never happen"
I'll bet it has to do with time zones

But then maybe ms is beingset to zero...


Good luck


--- "Olle E. Johansson" <oej at edvina.net> wrote:
> From: "Olle E. Johansson" <oej at edvina.net>
> To: asterisk-users at lists.digium.com
> Subject: Re: [Asterisk-Users] Asterisk on FreeBSD
> Date: Mon, 27 Oct 2003 21:25:04 +0100
> 
> Perry E. Metzger wrote:
> 
> > "Olle E. Johansson" <oej at edvina.net> writes:
> > 
> >>My Asterisk (fresh CVS) takes 98% of the system load on my FreeBSD
> >>server. On a slower CPU linux system, Asterisk runs at 0.1% - both
> >>without any active channels...
> >>
> >>Any ideas, anyone recognizing the problem?
> > 
> > 
> > On the BSDs, your friend is ktrace (or ktruss, depending on
> > flavor). It will tell you what system calls your process is
> executing
> > while it is doing this.
> ktrace on FreeBSD generates a file filled with this:
> And some signals caught here and there.
> Doesn't make me wiser.
> 
> /Olle
> ---------------------------------------------------------------
> 74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
>         ""
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
> 
> ----------
> And sometimes this - repeated many times:
> 
>         ""
>   74987 asterisk PSIG  SIGPROF caught handler=0x28180260 mask=0x0
> code=0x0
>   74987 asterisk RET   read 0
>   74987 asterisk CALL  gettimeofday(0x281c8e88,0)
>   74987 asterisk RET   gettimeofday 0
>   74987 asterisk CALL  sigprocmask(0x3,0x281c8ef8,0)
>   74987 asterisk RET   sigprocmask 0
>   74987 asterisk CALL  poll(0x80cf000,0x4,0)
>   74987 asterisk RET   poll 0
>   74987 asterisk CALL  sigreturn(0xbfa87cec)
>   74987 asterisk RET   sigreturn JUSTRETURN
>   74987 asterisk CALL  poll(0x851e400,0x1,0)
>   74987 asterisk RET   poll 1
>   74987 asterisk CALL  read(0x15,0x2845e060,0x100)
>   74987 asterisk GIO   fd 21 read 0 bytes
> 
> 
> -----------------
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users


=====
Chris Albertson
  Home:   310-376-1029  chrisalbertson90278 at yahoo.com
  Cell:   310-990-7550
  Office: 310-336-5189  Christopher.J.Albertson at aero.org
  KG6OMK

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