[ut3] Negative Delta Time on Xen VPS

[Rick Page]

When I scan my currently running processes, I do find an ntpd process
running. I also see that the ut3-bin process is idling at around 9.5%. I'll
have to check it later while people are connected. If anybody would like to
connect to it, it is at 64.34.161.48:7877.
Back to this ntpd process, I don't think I really need it and can I stop the
daemon?
-Rick

2008/1/21 Chris Brunelle <cbrunelle8 at cogeco.ca>:

>  I'm running Centos 5 as well and have the same problem (among others).
> When I use taskset, the server is stable and won't crash, but the idle CPU
> usage hovers around 75%.  Join the game and players pings are 200+ and it's
> unplayable.
>
>
>
> --Chris
>
>
>  ------------------------------
>
> *From:* Rick Page [mailto:mpcacrucesalus at gmail.com]
> *Sent:* Monday, January 21, 2008 8:35 AM
> *To:* ut3 at icculus.org
> *Subject:* Re: [ut3] Negative Delta Time on Xen VPS
>
>
>
> I was able to use taskset -p <process id> to see what its current affinity
> was set to, and then use taskset -p 1 <process id> to set it to use
> processor #0.
> http://linuxcommand.org/man_pages/taskset1.html
> -Rick
>
> On Jan 21, 2008 9:00 AM, Rene Treffer <treffer at in.tum.de> wrote:
>
> Limiting to one cpu can be done with xen (set the cpu count/cpu) or by
> using cpuset. Should work with virtually any kernel that has these
> options enabled. The default CentOS kernel should come with cpuset
> support, I'm not sure about the xen kernel, though.
>
> Just google for tutorials.
>
>
> Rick Page wrote:
> > I have read in other similar posts that this can be caused by
> > multi-processor or multi-core processor systems. How do you force
> > ut3-bin to run off of one processor or one core? The fix at AMD's
> > website seems to be a Windows patch, is there a Linux patch hiding out
> > there somewhere? I am running CentOS 5.
> > -Rick
> >
> > On Jan 20, 2008 10:07 PM, Masher <lists at brainless.us
>
> > <mailto:lists at brainless.us>> wrote:
> >
> >     I'm not sure if this is the appropriate place to ask about this.
> >     I was going to post a bug report, but there wasn't a UT3 category
> >     in bugzilla.
> >
> >
> >
> >     I'm getting the following error message:
> >
> >
> >
> >     ScriptLog: Reset UTTeamGame_0
> >
> >     Critical: appError called:
> >
> >     Critical: Detected negative delta time - on AMD systems please
> >     install
> >     http://www.amd.com/us-en/Processors/TechnicalResources/0,,30_182_871_13118,00.html
>
> >
> >
> >     Exit: Executing UObject::StaticShutdownAfterError
> >
> >     Log: appRequestExit(1)
> >
> >
> >
> >     I'm running UT3 on a Xen virtual server.  It runs quite well, but
> >     dies with this message every 2-8 hours.
> >
> >
> >
> >     It's emulating intel hardware and runs on intel hardware.
>
> >     Provider is linode.com <http://linode.com>.
>
> >
> >
> >
> >     I get the same error with CentOS 5 and Fedora 8 on a 2.6.18
> >     kernel.  I've tried binding the process to one CPU, and it helps
> >     some in the frequency of how often it happens, but still crashes.
> >
> >
> >
> >     I'm open to trying anything to make it work.
> >
> >
> >
> >     Thanks!
> >
> >
>
>  ---
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