Hi Slawek, I've tried with 8950/9000 but I had problems communicating with external hosts from the VM.
Regards, Pedro Sousa On Thu, Jan 22, 2015 at 9:36 PM, Sławek Kapłoński <sla...@kaplonski.pl> wrote: > As I wrote earlier, for me it is best to have 9000 on hosts and 8950 on > instances. Then I have full speed between instances. With lower mtu on > instances I have about 2-2.5 Gbps and I saw that vhost-net process on host > is using 100 of 1 cpu core. I'm using libvirt with kvm - maybe You are > using something else and it will be different on Your hosts. > > Slawek Kaplonski > > > W dniu 22.01.2015 o 20:45, Pedro Sousa pisze: > >> Hi Slawek, >> >> I've tried several options but that one that seems to work better is MTU >> 1450 on VM and MTU 1600 on the host. With MTU 1400 on the VM I would get >> freezes and timeouts. >> >> Still I get about 2.2Gbit/Sec while in the host I get 9 Gbit/Sec, do you >> think is normal? >> >> Thanks, >> Pedro Sousa >> >> >> >> >> On Thu, Jan 22, 2015 at 7:32 PM, Sławek Kapłoński <sla...@kaplonski.pl >> <mailto:sla...@kaplonski.pl>> wrote: >> >> 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> >> <mailto: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> >> <mailto: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> >> <mailto:OpenStack-operators@__lists.openstack.org >> <mailto:OpenStack-operators@lists.openstack.org>> >> > > > >> http://lists.openstack.org/__cgi-bin/mailman/listinfo/__ >> openstack-operators >> <http://lists.openstack.org/cgi-bin/mailman/listinfo/ >> openstack-operators> >> > > >> > > >> >> >> >> -- >> Pozdrawiam >> Sławek Kapłonski >> sla...@kaplonski.pl <mailto:sla...@kaplonski.pl> >> >> >> > -- > Pozdrawiam > Sławek Kapłonski > sla...@kaplonski.pl >
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