Re: rtl8139 stop working under high load

2008-07-13 Thread Avi Kivity

Farkas Levente wrote:

hi,
i'm just switch to the use rtl8139 network emulator in kvm-70 for the 
guests, but under high load it's simple stop working. a reboot or even a

service network restart
solve the problem, but imho there should have to be some bug in the 
qemu's rtl8139 code. and there is not any kind of error in any log 
(neither the host's nor the guest's).
this not happened with e1000. but with e1000 the network sometimes 
seems to breathing (sometimes slow down and then speed up again).

do currently which is the preferred network network device in qemu/kvm?


kvm-71 contains a fix for ioapic interrupts under load, please test it 
when it comes out.



--
error compiling committee.c: too many arguments to function

--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: rtl8139 stop working under high load

2008-07-12 Thread Farkas Levente

Dor Laor wrote:

Farkas Levente wrote:

hi,
i'm just switch to the use rtl8139 network emulator in kvm-70 for the 
guests, but under high load it's simple stop working. a reboot or even a

service network restart
solve the problem, but imho there should have to be some bug in the 
qemu's rtl8139 code. and there is not any kind of error in any log 
(neither the host's nor the guest's).
this not happened with e1000. but with e1000 the network sometimes 
seems to breathing (sometimes slow down and then speed up again).

do currently which is the preferred network network device in qemu/kvm?
thanks.

I think rtl8139 is the most stable, and afterwards virtio and e1000 
(which both perform much better too).

Maybe it's irq problem. Can you run the same test with -no-kvm-irqchip ?


it happened when i run revisor to build iso through an nsf mounted 
volume (where the nefs server was another kvm guest). i try 4 times with 
rtl8139 and it always stop working. when i switch back to e1000 then 
this not happened.

i can't test it now remotely:-(

--
  Levente   "Si vis pacem para bellum!"
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html


Re: rtl8139 stop working under high load

2008-07-12 Thread Dor Laor

Farkas Levente wrote:

hi,
i'm just switch to the use rtl8139 network emulator in kvm-70 for the 
guests, but under high load it's simple stop working. a reboot or even a

service network restart
solve the problem, but imho there should have to be some bug in the 
qemu's rtl8139 code. and there is not any kind of error in any log 
(neither the host's nor the guest's).
this not happened with e1000. but with e1000 the network sometimes 
seems to breathing (sometimes slow down and then speed up again).

do currently which is the preferred network network device in qemu/kvm?
thanks.

I think rtl8139 is the most stable, and afterwards virtio and e1000 
(which both perform much better too).

Maybe it's irq problem. Can you run the same test with -no-kvm-irqchip ?
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html


rtl8139 stop working under high load

2008-07-11 Thread Farkas Levente

hi,
i'm just switch to the use rtl8139 network emulator in kvm-70 for the 
guests, but under high load it's simple stop working. a reboot or even a

service network restart
solve the problem, but imho there should have to be some bug in the 
qemu's rtl8139 code. and there is not any kind of error in any log 
(neither the host's nor the guest's).
this not happened with e1000. but with e1000 the network sometimes seems 
to breathing (sometimes slow down and then speed up again).

do currently which is the preferred network network device in qemu/kvm?
thanks.

--
  Levente   "Si vis pacem para bellum!"
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html