Hello, In dnsmasq file in neutron will be ok. It will then force option 26 on vm. You can also manually change it on vms to tests.
Slawek Kaplonski W dniu 22.01.2015 o 17:06, Pedro Sousa pisze:
Hi Slawek, I'll test this, did you change the mtu on dnsmasq file in /etc/neutron/? Or do you need to change on other places too? Thanks, Pedro Sousa On Wed, Jan 21, 2015 at 4:26 PM, Sławek Kapłoński <sla...@kaplonski.pl <mailto:sla...@kaplonski.pl>> wrote: I have similar and I also got something like 2-2,5Gbps between vms. When I change it to 8950 on vms (so in neutron conf) (50 less then on hosts) then it is much better. You can check that probably when You make test between vms on host there is process called "vhost-net" (or something like that) and it uses 100% of one cpu core and that is imho bottleneck Slawek Kaplonski On Wed, Jan 21, 2015 at 04:12:02PM +0000, Pedro Sousa wrote: > Hi Slawek, > > I have dhcp-option-force=26,1400 in neutron-dnsmasq.conf and MTU=9000 on > network-interfaces in the operating system. > > Do I need to change somewhere else? > > Thanks, > Pedro Sousa > > On Wed, Jan 21, 2015 at 4:07 PM, Sławek Kapłoński <sla...@kaplonski.pl <mailto:sla...@kaplonski.pl>> > wrote: > > > Hello, > > > > Try to set bigger jumbo framse on hosts and vms. For example on hosts You > > can > > set 9000 and then 8950 and check then. It helps me with similar problem. > > > > Slawek Kaplonski > > > > On Wed, Jan 21, 2015 at 03:22:50PM +0000, Pedro Sousa wrote: > > > Hi all, > > > > > > is there a way to improve network performance on my instances with > > VXLAN? I > > > changed the MTU on physical interfaces to 1600, still performance it's > > > lower than in baremetal hosts: > > > > > > *On Instance:* > > > > > > [root@vms6-149a71e8-1f2a-4d6e-bba4-e70dfa42b289 ~]# iperf3 -s > > > ----------------------------------------------------------- > > > Server listening on 5201 > > > ----------------------------------------------------------- > > > Accepted connection from 10.0.66.35, port 42900 > > > [ 5] local 10.0.66.38 port 5201 connected to 10.0.66.35 port 42901 > > > [ ID] Interval Transfer Bandwidth > > > [ 5] 0.00-1.00 sec 189 MBytes 1.59 Gbits/sec > > > [ 5] 1.00-2.00 sec 245 MBytes 2.06 Gbits/sec > > > [ 5] 2.00-3.00 sec 213 MBytes 1.78 Gbits/sec > > > [ 5] 3.00-4.00 sec 227 MBytes 1.91 Gbits/sec > > > [ 5] 4.00-5.00 sec 235 MBytes 1.97 Gbits/sec > > > [ 5] 5.00-6.00 sec 235 MBytes 1.97 Gbits/sec > > > [ 5] 6.00-7.00 sec 234 MBytes 1.96 Gbits/sec > > > [ 5] 7.00-8.00 sec 235 MBytes 1.97 Gbits/sec > > > [ 5] 8.00-9.00 sec 244 MBytes 2.05 Gbits/sec > > > [ 5] 9.00-10.00 sec 234 MBytes 1.97 Gbits/sec > > > [ 5] 10.00-10.04 sec 9.30 MBytes 1.97 Gbits/sec > > > - - - - - - - - - - - - - - - - - - - - - - - - - > > > [ ID] Interval Transfer Bandwidth Retr > > > [ 5] 0.00-10.04 sec 2.25 GBytes 1.92 Gbits/sec 43 > > sender > > > [ 5] 0.00-10.04 sec 2.25 GBytes 1.92 Gbits/sec > > > receiver > > > > > > > > > *On baremetal:* > > > iperf3 -s > > > warning: this system does not seem to support IPv6 - trying IPv4 > > > ----------------------------------------------------------- > > > Server listening on 5201 > > > ----------------------------------------------------------- > > > Accepted connection from 172.16.21.4, port 51408 > > > [ 5] local 172.16.21.5 port 5201 connected to 172.16.21.4 port 51409 > > > [ ID] Interval Transfer Bandwidth > > > [ 5] 0.00-1.00 sec 1.02 GBytes 8.76 Gbits/sec > > > [ 5] 1.00-2.00 sec 1.07 GBytes 9.23 Gbits/sec > > > [ 5] 2.00-3.00 sec 1.08 GBytes 9.29 Gbits/sec > > > [ 5] 3.00-4.00 sec 1.08 GBytes 9.27 Gbits/sec > > > [ 5] 4.00-5.00 sec 1.08 GBytes 9.27 Gbits/sec > > > [ 5] 5.00-6.00 sec 1.08 GBytes 9.28 Gbits/sec > > > [ 5] 6.00-7.00 sec 1.08 GBytes 9.28 Gbits/sec > > > [ 5] 7.00-8.00 sec 1.08 GBytes 9.29 Gbits/sec > > > [ 5] 8.00-9.00 sec 1.08 GBytes 9.28 Gbits/sec > > > [ 5] 9.00-10.00 sec 1.08 GBytes 9.29 Gbits/sec > > > [ 5] 10.00-10.04 sec 42.8 MBytes 9.31 Gbits/sec > > > - - - - - - - - - - - - - - - - - - - - - - - - - > > > [ ID] Interval Transfer Bandwidth Retr > > > [ 5] 0.00-10.04 sec 10.8 GBytes 9.23 Gbits/sec 95 > > sender > > > [ 5] 0.00-10.04 sec 10.8 GBytes 9.22 Gbits/sec > > > receiver > > > > > > > > > Thanks, > > > Pedro Sousa > > > > > _______________________________________________ > > > OpenStack-operators mailing list > > > OpenStack-operators@lists.openstack.org <mailto:OpenStack-operators@lists.openstack.org> > > > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators > > > >
-- Pozdrawiam Sławek Kapłonski sla...@kaplonski.pl _______________________________________________ OpenStack-operators mailing list OpenStack-operators@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
