Re: [As-users] v1.8.11 + toshiba 320CT = 4second freeze every 1020

Tim Moore (afterstep@nsr500.net)
Mon, 28 Jun 2004 14:56:46 -0700 


Unfortunately also the same for 2.00.beta4b.  This is with defaults
./configure; make; make install; echo afterstep > .xinitrc; startx:

> server 192.168.1.11, stratum 2, offset 4.161093, delay 0.02583
> server 192.168.1.10, stratum 3, offset 4.165817, delay 0.02580
> 28 Jun 14:11:39 ntpdate[21467]: step time server 192.168.1.11 offset 4.161093 sec
> server 192.168.1.11, stratum 2, offset 4.161255, delay 0.02583
> server 192.168.1.10, stratum 3, offset 4.165978, delay 0.02579
> 28 Jun 14:11:40 ntpdate[21469]: step time server 192.168.1.11 offset 4.161255 sec
** machine freezes here **
> server 192.168.1.11, stratum 2, offset 8.151905, delay 0.02583
> server 192.168.1.10, stratum 3, offset 8.156620, delay 0.02579
> 28 Jun 14:11:41 ntpdate[21471]: step time server 192.168.1.11 offset 8.151905 sec
> server 192.168.1.11, stratum 2, offset 8.152067, delay 0.02582
> server 192.168.1.10, stratum 3, offset 8.156777, delay 0.02582
> 28 Jun 14:11:43 ntpdate[21473]: step time server 192.168.1.11 offset 8.152067 sec

The memory footprint for v1.8.11 is 24MB virtual, 10MB resident, v2beta4 is
3x bigger.  Not good for small memory/cpu machines as older laptops.

Any "look here" suggestions welcome.

rgds,
tim.

Tim Moore wrote:
> I know this release is not current but would like to fix it since my 
> laptop has natural limitations (64MB max, Mobile Pentium MMX @266MHz).
> 
> Somewhere in 1.8.11 is code that causes a precise, repeatable 3.99 
> second whole system freeze very 1020 seconds no matter how busy or idle, 
> or task mix.  "whole system" means the entire laptop, including RTC, is 
> frozen. After the freeze, everything continues as if nothing happened 
> except that the system time has jumped ahead by 3.990 seconds.  This 
> does not happen on my Asus and Abit based desktops which all have the 
> same environment.
> 
> There have never been any problems like dropped packets or data loss, 
> only  the RTC gaining 4.seconds.  I ran ntpdate to my LAN ntp server in 
> a 1 second loop to illustrate:
> 
>> 28 Jun 11:56:52 ntpdate[2780]: adjust time server 192.168.1.11 offset 
>> 0.002125 sec
>> 28 Jun 11:56:53 ntpdate[2782]: step time server 192.168.1.11 offset 
>> 3.992613 sec
>> ...
>> 28 Jun 12:13:52 ntpdate[4599]: step time server 192.168.1.11 offset 
>> 4.003295 sec
>> 28 Jun 12:13:53 ntpdate[4601]: step time server 192.168.1.11 offset 
>> 7.993790 sec
>> ...
>> 28 Jun 12:30:52 ntpdate[6409]: step time server 192.168.1.11 offset 
>> 8.004875 sec
>> 28 Jun 12:30:53 ntpdate[6411]: step time server 192.168.1.11 offset 
>> 11.995373 sec
> 
> 
> When I switch to either gnome or kde, no time jumps.  100% repeatable.
> 
> I am happy to track and fix.  I've looked at lib/{sleep,tick}.c and can 
> see no obvious 1020s or 4s patterns.  Any suggestions as to where else 
> to look?
> 
> Thanks,
> Tim.


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