Hi,
I am trying to set bandwidth caps for two zones. I created two vnics and
assigned them to two zones 'exclusive'ly. Then, I used the following
commands to set the bandwidth limits
#dladm modify-vnic -b 100 1
#dladm modify-vnic -b 900 2
and I see that they are set correctly.
# dladm show-vnic
device speed
vnic1 e1000g0 1000 Mbps mac: 0:14:4f:8d:a9:bd (fixed) bw limit:
100 Mbps cpus: 0
vnic2 e1000g0 1000 Mbps mac: 0:14:4f:8d:a9:be (fixed) bw limit:
900 Mbps cpus: 0
I am measuring the bandwidth used by a zone, by calculating tx + rx bytes as
seen by 'kstat -n vnic?'. Is this the right way to measure it?
I use httperf to connect to the webservers running in the two zones, and I
always see the bandwidth used by the zones exceeding the limits often
reaching 400Mbps (my workload is very network heavy).
I tried using the -L option as specified in the dladm man page
(http://dlc.sun.com/osol/netvirt/downloads/20070214/dladm.1m.txt) to cap
bandwidth, but I get an error.
# dladm modify-vnic -b 100 -L 1
dladm: unrecognized option '-L'
I am not sure whether this is the right way to cap bandwidth. Another way to
do it, I believe, is to use flowadm and setup flows with limited bandwidth.
I thought that probably uses more protocol processing than necessary, since
I just want to cap the full vnic bandwidth.
Any ideas?
Pradeep
