[Freeswitch-users] Kernel timer warning with CentOS 5.4

Wed Mar 10 12:29:02 PST 2010

The best tool we have is actually running freeswitch on it to see.

On Wed, Mar 10, 2010 at 1:27 PM, Peder <peder at networkoblivion.com> wrote:

>  Is there a way to tell how accurate the timing is on a box before running
> FreeSWITCH on it?
>
>
>
> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Anthony
> Minessale
> *Sent:* Wednesday, March 10, 2010 10:26 AM
> *To:* freeswitch-users at lists.freeswitch.org
> *Subject:* Re: [Freeswitch-users] Kernel timer warning with CentOS 5.4
>
>
>
> FS now tries to determine how accurate the timing is by doing some tests
> with 1ms sleeps.
> Most 64 bit CentOS box I have seen can easily calibrate.
> If you are having that error alot but the calls still sound ok, it's safe
> to ignore it.
> you can also start FS with -nocal to skip this test.
>
> Also make sure you do not have any other cpu-intensive application on your
> box possibly competing for resources.
>
>  On Wed, Mar 10, 2010 at 3:42 AM, Tihomir Culjaga <tculjaga at gmail.com>
> wrote:
>
> i have the same issue but on centos 4.8 ... on 5.4 doesn't complain...
>
> what is this related to ?
>
> T.
>
>
>
> On Mon, Mar 8, 2010 at 2:25 PM, Bruce Hopkins <jbrucehopkins at gmail.com>
> wrote:
>
> Hi Anthony,
>
> Many, many apologies to take so long to reply - I failed to notice your
> response.  Sorry !
>
> It seems to be variable.  Most times (on CentOS 5.3) when I start FS it
> tells me it is around 1995ms.  Occasionally it is lower (sub 1000ms) and
> then does not give a warning.
>
> Best wishes
> Bruce
>
>
>
> On 1 March 2010 16:47, Anthony Minessale <anthony.minessale at gmail.com>
> wrote:
>
> we are still wary about 5.3 due to bugs reported in libc.
> What number does it say it detected for the gap?
>
>   On Sun, Feb 28, 2010 at 12:03 PM, Bruce Hopkins <jbrucehopkins at gmail.com>
> wrote:
>
>  OK - I've realised I do get the same warning with CentOS 5.3, it just
> goes past more quickly so I didn't see it.  Maybe it is just the hardware
> ....
>
>
>
> On 28 February 2010 15:37, Bruce Hopkins <jbrucehopkins at gmail.com> wrote:
>
> Hi,
>
> I wonder if anyone would be able to advise please:
>
> When I build FreeSWITCH on yum updated CentOS 5.4, I get a warning when I
> start FreeSWITCH that
>
> "Abnormally large timer gap detected"
> "Do you have your kernel timer set to greater than 1kHz?  You may
> experience audio problems".
>
> I get no such warning if I build on CentOS 5.3, and the test timings it
> measures on starting FreeSWITCH do look lower.  All I was doing to upgrade
> to Centos5.4 was a yum update on the 5.3 build.
>
> I guess the warning comes from here:
> http://fisheye.freeswitch.org/browse/~raw,r=16409/FreeSWITCH/src/switch_time.c<http://fisheye.freeswitch.org/browse/%7Eraw,r=16409/FreeSWITCH/src/switch_time.c>
>
> This is all on pretty low spec hardware - a couple of different Dell
> optiplex p4's I use for testing.
>
> Does anyone happen to know if I should just stick to Cent)S 5.3, or use 5.4
> and not worry about the warnings, or if there is something I can do to fix
> the problem it is warning about.  Perhaps it is just that I shouldn't use
> such crummy hardware?!
>
> Many thanks in advance
> Bruce
>
>
>
>
>
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>
> --
> Anthony Minessale II
>
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>
> --
> Anthony Minessale II
>
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-- 
Anthony Minessale II

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