qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] Re: Network connections stalling (due to lost interrupt


From: n schembr
Subject: Re: [Qemu-devel] Re: Network connections stalling (due to lost interrupts/ticks?)
Date: Fri, 3 Aug 2007 06:48:55 -0700 (PDT)

I'm seeing the same rtc error but my systems are not hanging. I can still get to them and they seem to handle a good load from time to time, 4 running proc.

Is this a stability or performance issue?

If it is a stability issue  how do I test it?

----- Original Message ----
From: Jason Wessel <address@hidden>
To: address@hidden; address@hidden
Sent: Friday, August 3, 2007 8:18:50 AM
Subject: Re: [Qemu-devel] Re: Network connections stalling (due to lost interrupts/ticks?)

Charles,

Are you willing to try an experimental patch?

Perhaps you could try the attached patch and post back if it happens to
solve your problem.  There is most definitely a problem where qemu can
get hung up indefinitely after an "interrupt storm".  I had not ever
submitted it because there is no clean way to do this via the opaque
information that is passed around.  It seems wrong to have to make the
ioapic a global.  If this does fix the problem perhaps someone will
decide to fix this up in a cleaner fashion via the opaque structures.

Jason.

Charles Duffy wrote:
> Charles Duffy wrote:
>  
>> There's a warning on startup that the system can't set a 1024Hz timer,
>> which persists even after I set /proc/sys/dev/rtc/max-user-freq to 1024,
>> and I occasionally get warnings at runtime ("Your time source seems to
>> be instable or some driver is hogging interrupts").
>>    
>
> This was happening because my host kernel was compiled with
> CONFIG_HPET_RTC_IRQ=y. I've disabled this option, recompiled and
> rebooted, and it resolved the RTC warning (and apparently, the unstable
> time source messages) -- but my network connections are still stalling.
>
>
>
>  



reply via email to

[Prev in Thread] Current Thread [Next in Thread]