wiki:Equipos/Kvm/TestsKVM

PCI device assignment

In order to assign devices in KVM, you'll need a system which supports VT-d. This has nothing to do with the VT-x support of your CPU, VT-d needs to be supported by both your chipset on your motherboard and by your CPU. Our CPUs (Pentium D 3.00GHz, E5410 and E5620) do not support VT-d. VT-d extesions can be checked in intel.

Network bandwidth

KVM Virtual hosts can use 3 different kind of network cards: virtualized, paravirtualized and dedicated.

DOWN UP
Host 941 Mb/s 940 Mb/s
Paravirtualized 721 Mb/s 600 Mb/s
Virtualized 45.7 Mb/s 48.2 Mb/s

Tools

lspci

[root@localhost ~]# lspci |grep net
00:03.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 20)

Iperf

[root@wn002 ~]# /software/bin/iperf -s
[root@wn003 ~]# /software/bin/iperf -c wn002 -r
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
------------------------------------------------------------
------------------------------------------------------------
Client connecting to wn002, TCP port 5001
TCP window size:  711 KByte (default)
------------------------------------------------------------
[  5] local 192.168.202.13 port 48473 connected with 192.168.202.12 port 5001
[ ID] Interval       Transfer     Bandwidth
[  5]  0.0-10.0 sec  1.10 GBytes   944 Mbits/sec
[  4] local 192.168.202.13 port 5001 connected with 192.168.202.12 port 37033
[  4]  0.0-10.0 sec  1.10 GBytes   941 Mbits/sec
Last modified 10 years ago Last modified on May 8, 2012 9:42:20 AM