Felix Leimbach wrote:
Tomasz Chmielewski wrote:
Avi Kivity schrieb:
Might it be that some counter overflowed? What are the packet
counts on long running guests?
I don't think so.
I just made both counters (TX, RX) of ifconfig for virtio interfaces
overflow several times and everything is still as fast as it should be.
I had overflows on the counters as well (32 bit guests) without an
problem.
Here is the current ifconfig output of a machine which suffered the
problem before:
eth0 Link encap:Ethernet HWaddr 52:54:00:74:01:01
inet addr:10.75.13.1 Bcast:10.75.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3542104 errors:0 dropped:0 overruns:0 frame:0
TX packets:412546 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:682285568 (650.6 MiB) TX bytes:2907586796 (2.7 GiB)
packet counters are will within 32-bit limits. byte counters not so
interesting.
currently I have e1000 only on windows guests. Is there a way to
gather relevant statistics there too?
Sure, right-click on the adapter icon, it's there somewhere.
Do you experience the slowdown on Windows guests?
--
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 majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
