Re: [libvirt-users] Network speed between two guests on same host.

Le 29 févr. 2016 à 17:13, Dominique Ramaekers <dominique.ramaekers(a)cometal.be&gt; a écrit : Hi, I've got two hosts. Most of my guests are Windows systems. I'm using LANBench to test network performance. 1) From an physical PC to a guest (it doesn't matter on which host), I get almost 1Gb/s. They are connected through a 1Gb/s swich => very good! 2) From a guest on one host to a guest on the other host => plusminus 1Gb/s => Okay! 3) Between two guests on the same host => plusminus 230Mb/s ??? The guests have network over a bridged interface, so I tried the same test over a NAT interface => The same 230Mb/s... Is there a way to tweak connection speeds between two guest running on the same host? Thanks in advance... An piece of the xml dump of one of the guests: <domain type='kvm' id='17'> <name>PCVIRTdra</name> <uuid>925e4f9b-2c27-406d-bdd9-f3e0b44f28bb</uuid> <title>PCVIRTdra - PC voor dra</title> <description></description> <memory unit='KiB'>2097152</memory> <currentMemory unit='KiB'>2097152</currentMemory> <memoryBacking> <hugepages/> </memoryBacking> <vcpu placement='static'>8</vcpu> <resource> <partition>/machine</partition> </resource> <os> <type arch='x86_64' machine='pc-i440fx-utopic'>hvm</type> <bootmenu enable='yes'/> </os> <features> <acpi/> <apic/> <hyperv> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='8191'/> </hyperv> </features> <cpu mode='custom' match='exact'> <model fallback='allow'>cpu64-rhel6</model> <topology sockets='2' cores='2' threads='2'/> </cpu> <clock offset='localtime'> <timer name='rtc' tickpolicy='catchup'/> <timer name='pit' tickpolicy='delay'/> <timer name='hpet' present='no'/> <timer name='hypervclock' present='yes'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <pm> <suspend-to-mem enabled='no'/> <suspend-to-disk enabled='no'/> </pm> <devices> .... <interface type='bridge'> <mac address='52:54:00:b1:41:b3'/> <source bridge='br0'/> <target dev='vnet4'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> ..... _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users