[Freeswitch-users] Kernel timer warning with CentOS 5.4

Wed Mar 10 15:12:44 PST 2010

it means that it has detected a 150 microsecond offset.

It tries originally to sleep 1000 microseconds (1 millisecond) in a loop.
It times how long the sleep lasted and compares how long it really took vs
how long it was asked to sleep.
then it slowly decreases by 50 and tries again until it gets within 2
microseconds of the goal.

in your case of 150, it means if you subtract 150 from the total number of
microseconds from all the sleeps
they will be more accurate.

On Wed, Mar 10, 2010 at 4:23 PM, Giovanni Maruzzelli <gmaruzz at celliax.org>wrote:

> On Wed, Mar 10, 2010 at 9:53 PM, Peder <peder at networkoblivion.com> wrote:
> > OK, can you decode what this means exactly?  I’d be happy to write
> something
> > up to reference users to, but I don’t really know what it means.  It is a
> a
> > quad-core 2.8GHz running CentOS 5.3 64-bit.  It looks like it calculated
> > 150, but is that good, bad, indifferent?  I’ve tried to google it, but
> > without really knowing what it is I am looking for, I am not getting good
> > results.
>
> This tells you the calculated average discrepancy of the timing is 150
> microseconds (millisecond/1000), that I believe is good. (hope this
> explanation is true ;) )
>
>
> >
> >
> >
> >
> >
> > 2010-03-10 14:48:37.960041 [CONSOLE] switch_time.c:1021 Calibrating
> timer,
> > please wait...
> >
> > 2010-03-10 14:48:38.060174 [CONSOLE] switch_time.c:223 Test: 1000
> Average:
> > 2001 Step: 50
> >
> > 2010-03-10 14:48:38.160169 [CONSOLE] switch_time.c:223 Test: 950 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:38.260164 [CONSOLE] switch_time.c:223 Test: 900 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:38.360159 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:38.460155 [CONSOLE] switch_time.c:223 Test: 800 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:38.560149 [CONSOLE] switch_time.c:223 Test: 750 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:38.660144 [CONSOLE] switch_time.c:223 Test: 700 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:38.760139 [CONSOLE] switch_time.c:223 Test: 650 Average:
> > 1997 Step: 50
> >
> > 2010-03-10 14:48:38.860134 [CONSOLE] switch_time.c:223 Test: 600 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:38.960132 [CONSOLE] switch_time.c:223 Test: 550 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:39.060124 [CONSOLE] switch_time.c:223 Test: 500 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:39.160119 [CONSOLE] switch_time.c:223 Test: 450 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:39.260114 [CONSOLE] switch_time.c:223 Test: 400 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:39.311111 [CONSOLE] switch_time.c:223 Test: 350 Average:
> > 1018 Step: 50
> >
> > 2010-03-10 14:48:39.361109 [CONSOLE] switch_time.c:223 Test: 300 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.411106 [CONSOLE] switch_time.c:223 Test: 300 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.461103 [CONSOLE] switch_time.c:223 Test: 300 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.511101 [CONSOLE] switch_time.c:223 Test: 300 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.561099 [CONSOLE] switch_time.c:223 Test: 300 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.612096 [CONSOLE] switch_time.c:223 Test: 300 Average:
> > 1018 Step: 50
> >
> > 2010-03-10 14:48:39.662092 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.712091 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.762088 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.812086 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.862083 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.912082 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:39.962077 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.012076 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.063074 [CONSOLE] switch_time.c:223 Test: 250 Average:
> > 1018 Step: 50
> >
> > 2010-03-10 14:48:40.113071 [CONSOLE] switch_time.c:223 Test: 200 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.163068 [CONSOLE] switch_time.c:223 Test: 200 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.213066 [CONSOLE] switch_time.c:223 Test: 200 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.263064 [CONSOLE] switch_time.c:223 Test: 200 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.313061 [CONSOLE] switch_time.c:223 Test: 200 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.363059 [CONSOLE] switch_time.c:223 Test: 200 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.413056 [CONSOLE] switch_time.c:223 Test: 200 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.465054 [CONSOLE] switch_time.c:223 Test: 200 Average:
> > 1038 Step: 50
> >
> > 2010-03-10 14:48:40.515051 [CONSOLE] switch_time.c:223 Test: 150 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.565049 [CONSOLE] switch_time.c:223 Test: 150 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.615046 [CONSOLE] switch_time.c:223 Test: 150 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.665043 [CONSOLE] switch_time.c:223 Test: 150 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.715041 [CONSOLE] switch_time.c:223 Test: 150 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.765039 [CONSOLE] switch_time.c:223 Test: 150 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.815036 [CONSOLE] switch_time.c:223 Test: 150 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.866032 [CONSOLE] switch_time.c:223 Test: 150 Average:
> > 1018 Step: 50
> >
> > 2010-03-10 14:48:40.916032 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:40.966028 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:41.016026 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:41.066022 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:41.116021 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:41.166017 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:41.216016 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:41.266013 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:41.317011 [CONSOLE] switch_time.c:223 Test: 100 Average:
> > 1018 Step: 50
> >
> > 2010-03-10 14:48:41.367008 [CONSOLE] switch_time.c:223 Test: 50 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.417006 [CONSOLE] switch_time.c:223 Test: 50 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.467004 [CONSOLE] switch_time.c:223 Test: 50 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.517001 [CONSOLE] switch_time.c:223 Test: 50 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.566999 [CONSOLE] switch_time.c:223 Test: 50 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.616996 [CONSOLE] switch_time.c:223 Test: 50 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.666993 [CONSOLE] switch_time.c:223 Test: 50 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.716991 [CONSOLE] switch_time.c:223 Test: 50 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.767989 [CONSOLE] switch_time.c:223 Test: 50 Average:
> > 1018 Step: 50
> >
> > 2010-03-10 14:48:41.817985 [CONSOLE] switch_time.c:223 Test: 0 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.867984 [CONSOLE] switch_time.c:223 Test: 0 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.917980 [CONSOLE] switch_time.c:223 Test: 0 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:41.967979 [CONSOLE] switch_time.c:223 Test: 0 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:42.017975 [CONSOLE] switch_time.c:223 Test: 0 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:42.067974 [CONSOLE] switch_time.c:223 Test: 0 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:42.117970 [CONSOLE] switch_time.c:223 Test: 0 Average:
> 998
> > Step: 50
> >
> > 2010-03-10 14:48:42.168969 [CONSOLE] switch_time.c:223 Test: 0 Average:
> 1018
> > Step: 50
> >
> > 2010-03-10 14:48:42.269962 [CONSOLE] switch_time.c:223 Test: 1000
> Average:
> > 2018 Step: 50
> >
> > 2010-03-10 14:48:42.369958 [CONSOLE] switch_time.c:223 Test: 950 Average:
> > 1998 Step: 50
> >
> > 2010-03-10 14:48:42.448958 [CONSOLE] switch_time.c:223 Test: 900 Average:
> > 1578 Step: 50
> >
> > 2010-03-10 14:48:42.498954 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.548951 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.598949 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.648946 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.698945 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.748942 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.798941 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.848936 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.898935 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.948931 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.998931 [CONSOLE] switch_time.c:223 Test: 850 Average:
> > 998 Step: 50
> >
> > 2010-03-10 14:48:42.998963 [CONSOLE] switch_time.c:274 Timer offset of
> 150
> > calculated
> >
> > 2010-03-10 14:48:42.998994 [CONSOLE] switch_loadable_module.c:900
> > Successfully Loaded [CORE_SOFTTIMER_MODULE]
> >
> > 2010-03-10 14:48:42.999040 [NOTICE] switch_loadable_module.c:230 Adding
> > Timer 'soft'
> >
> > 2010-03-10 14:48:42.999234 [CONSOLE] switch_loadable_module.c:900
> > Successfully Loaded [CORE_PCM_MODULE]
> >
> > _______________________________________________
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> >
> >
>
>
>
> --
> Sincerely,
>
> Giovanni Maruzzelli
> Cell : +39-347-2665618
>
> _______________________________________________
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>

-- 
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