Re: [Astlinux-users] rtc: lost some interrupts at 1024Hz.

[Lonnie A. <li...@lo...>]

On Feb 29, 2008, at 12:50 PM, Kristian Kielhofner wrote:

> On Fri, Feb 29, 2008 at 1:43 PM, Lonnie Abelbeck
> <li...@lo...> wrote:
>> Update,
>>
>>  On my net5501 I am still getting these messages... but not often.
>>
>>  # grep interrupts /var/log/messages
>>  Feb 22 17:31:29 voip user.warn kernel: rtc: lost some interrupts at
>>  1024Hz.
>>  Feb 23 18:13:16 voip user.warn kernel: rtc: lost some interrupts at
>>  1024Hz.
>>  Feb 26 09:05:46 voip user.warn kernel: rtc: lost some interrupts at
>>  1024Hz.
>>  Feb 29 12:06:15 voip user.warn kernel: rtc: lost some interrupts at
>>  1024Hz.
>>
>>
> Lonnie,
>
>   I was getting that on my net5501 too.
>
>   Have you tried loading ztdummy and running zttest?  I was getting
> HORRIBLE results, rarely above %25...  I gave up on it after that.
>
>   I wonder if there are more of these with oscillator problems than
> originally thought...
> --  
> Kristian Kielhofner

Kristian,

No, zttest works fine...

# zttest -c 10
Opened pseudo zap interface, measuring accuracy...
99.942474% 99.969040% 99.963676% 99.940628% 99.962402% 99.939651%  
99.963867%
99.940918% 99.965050% 99.964157%
--- Results after 10 passes ---
Best: 99.969 -- Worst: 99.940 -- Average: 99.955186, Difference:  
99.997548

Do you have any insight on what would cause this to happen only every  
24-48 hours?

Safe to ignore it?

Lonnie