Hello,
today I disovered, that e1000 cards has very poor performance in Fedora 18
and 19. Does not matter, if guest is an Linux or other system.
By "poor" I mean TCP network transfers about 5-90 kB/s, even if they are on
an gigabit network.
By downgrading kernel on Fedora 19 from 3.10.X to
kernel-3.9.5-301.fc19.x86_64 fixed my problem, so looks like there
is an bug in kernel. I tested these kernels:
Fast:
kernel-3.9.5-301.fc19.x86_64
Slow:
kernel-3.10.7-100.fc18.x86_64
kernel-3.10.9-100.fc18.x86_64
kernel-3.10.10-200.fc19.x86_64
Looks like it is an change with kernel-3.10.X. I can test other kernels if
requested.
For me, it's easy to reproduce. Tested on 4 host machines, 2 Fedoras,
multiple kernels and different guests. Also tested some network cards,
e1000, pcnet, ... All with similar problems.
As described in other bug, virtio net driver has time skew problems, so
I can't use it. :-(
Any ideas, how to solve this problem?
Regards
SAL
_______________________________________________
virt mailing list
virt@lists.fedoraproject.org
https://admin.fedoraproject.org/mailman/listinfo/virt
