Looking through old bug tickets... can you still reproduce this issue
with the latest version of QEMU? Or could we close this ticket nowadays?
** Changed in: qemu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1228285
Title:
e1000 nic TCP performances
Status in QEMU:
Incomplete
Bug description:
Hi,
Here is the context :
$ qemu -name A -m 1024 -net nic vlan=0,model=e1000 -net
socket,vlan=0,listen=127.0.0.1:7000
$ qemu -name B -m 1024 -net nic vlan=0,model=e1000 -net
socket,vlan=0,connect=127.0.0.1:7000
The bandwidth is really tiny :
. Iperf3 reports about 30 Mb/sec
. NetPerf reports about 50 Mb/sec
With UDP sockets, there is no problem at all :
. Iperf3 reports about 1 Gb/sec
. NetPerf reports about 950 Mb/sec
I've noticed this fact only with the e1000 NIC, not with others
(rtl8139,virtio, etc.)
I've used the main GIT version of QEMU.
Thanks in advance.
See you,
VInce
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