Its was hypervisor KVM (host) On Thu, Dec 17, 2015 at 2:52 PM, Tim Bell <tim.b...@cern.ch> wrote: > Was that the VM or the hypervisor ? > > These tips are good to include the upcoming hypervisor tuning guide > (https://wiki.openstack.org/wiki/Documentation/HypervisorTuningGuide) > > Tim > >> -----Original Message----- >> From: Satish Patel [mailto:satish....@gmail.com] >> Sent: 17 December 2015 18:55 >> To: Vahric Muhtaryan <vah...@doruk.net.tr> >> Cc: openstack@lists.openstack.org >> Subject: Re: [Openstack] Poor instance network performance >> >> I think i found solution, it improve little bit performance >> >> on tapdd55b834-f8 interface default txqueuelen size was 500, I have >> changed it to 10000 >> >> On Thu, Dec 17, 2015 at 12:07 PM, Satish Patel <satish....@gmail.com> >> wrote: >> > On host (compute) machine tap device showing lots of TX packet loss. >> > >> > tapdd55b834-f8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu >> 1500 >> > inet6 fe80::fc16:3eff:fecd:2aa4 prefixlen 64 scopeid 0x20<link> >> > ether fe:16:3e:cd:2a:a4 txqueuelen 500 (Ethernet) >> > RX packets 1060731031 bytes 298573599135 (278.0 GiB) >> > RX errors 0 dropped 0 overruns 0 frame 0 >> > TX packets 503372157 bytes 81345389820 (75.7 GiB) >> > TX errors 0 dropped 171333348 overruns 0 carrier 0 >> > collisions 0 >> > >> > On Thu, Dec 17, 2015 at 11:45 AM, Satish Patel <satish....@gmail.com> >> wrote: >> >> I just ran iperf and here is the results, bi-directional >> >> >> >> [ ID] Interval Transfer Bandwidth >> >> [ 5] 0.0-10.0 sec 1.04 GBytes 895 Mbits/sec >> >> [ 4] 0.0-10.0 sec 1.09 GBytes 935 Mbits/sec >> >> >> >> Look like when guest is under load, it can't handle traffic and start >> >> dropping packets. >> >> >> >> >> >> >> >> On Thu, Dec 17, 2015 at 11:36 AM, Vahric Muhtaryan >> <vah...@doruk.net.tr> wrote: >> >>> Maybe this also could be reference >> >>> >> >>> http://42.62.73.30/wordpress/wp-content/uploads/2013/10/Neutron- >> perf >> >>> ormance >> >>> -testing.pdf >> >>> >> >>> >> >>> On 17/12/15 18:32, "Satish Patel" <satish....@gmail.com> wrote: >> >>> >> >>>>We have our own custom application running on guest VM. i am just >> >>>>checking performance of VM. but i found if load go little up machine >> >>>>start breaking ping. >> >>>> >> >>>>I didn't run iperf test yet. which i am going to run in a min. >> >>>> >> >>>>On Thu, Dec 17, 2015 at 11:28 AM, Vahric Muhtaryan >> >>>><vah...@doruk.net.tr> >> >>>>wrote: >> >>>>> Okay Satish , >> >>>>> >> >>>>> Im not expert and do not want to divert you wrong direction. >> >>>>> I want to make your test on my server to cross check , can you pls >> >>>>>explain how and with what tool and to where you are making this >> >>>>>test. >> >>>>> >> >>>>> Regards >> >>>>> VM >> >>>>> >> >>>>> On 17/12/15 18:11, "Satish Patel" <satish....@gmail.com> wrote: >> >>>>> >> >>>>>>Thanks for reply, >> >>>>>> >> >>>>>>Following is my guest xml file. >> >>>>>> >> >>>>>>I am using Openstack JUNO and it use OVS. >> >>>>>> >> >>>>>><interface type='bridge'> >> >>>>>> <mac address='fa:16:3e:cd:2a:a4'/> >> >>>>>> <source bridge='qbrdd55b834-f8'/> >> >>>>>> <target dev='tapdd55b834-f8'/> >> >>>>>> <model type='virtio'/> >> >>>>>> <alias name='net0'/> >> >>>>>> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' >> >>>>>>function='0x0'/> >> >>>>>> </interface> >> >>>>>> >> >>>>>> >> >>>>>>Following is TOP command on guest machine, at this point i am >> >>>>>>getting ping breaks >> >>>>>> >> >>>>>>top - 16:10:30 up 20:46, 1 user, load average: 4.63, 4.41, 3.60 >> >>>>>>Tasks: 165 total, 6 running, 159 sleeping, 0 stopped, 0 zombie >> >>>>>>%Cpu0 : 15.1 us, 12.3 sy, 0.0 ni, 60.9 id, 0.0 wa, 0.0 hi, >> >>>>>>0.3 si, >> >>>>>>11.4 st >> >>>>>>%Cpu1 : 22.9 us, 17.2 sy, 0.0 ni, 51.4 id, 0.0 wa, 0.0 hi, >> >>>>>>0.3 si, >> >>>>>>8.2 st >> >>>>>>%Cpu2 : 28.8 us, 22.4 sy, 0.0 ni, 47.5 id, 0.0 wa, 0.0 hi, >> >>>>>>1.0 si, >> >>>>>>0.3 st >> >>>>>>%Cpu3 : 16.6 us, 15.0 sy, 0.0 ni, 66.4 id, 0.0 wa, 0.0 hi, >> >>>>>>0.3 si, >> >>>>>>1.7 st >> >>>>>>%Cpu4 : 9.8 us, 11.8 sy, 0.0 ni, 0.0 id, 75.4 wa, 0.0 hi, >> >>>>>>0.3 si, >> >>>>>>2.6 st >> >>>>>>%Cpu5 : 7.6 us, 6.1 sy, 0.0 ni, 81.4 id, 0.0 wa, 0.0 hi, >> >>>>>>4.2 si, >> >>>>>>0.8 st >> >>>>>>%Cpu6 : 8.1 us, 7.4 sy, 0.0 ni, 83.0 id, 0.0 wa, 0.0 hi, >> >>>>>>1.4 si, >> >>>>>>0.0 st >> >>>>>>%Cpu7 : 17.8 us, 17.8 sy, 0.0 ni, 64.1 id, 0.0 wa, 0.0 hi, >> >>>>>>0.3 si, >> >>>>>>0.0 st >> >>>>>>KiB Mem : 8175332 total, 4630124 free, 653284 used, 2891924 >> >>>>>>buff/cache >> >>>>>>KiB Swap: 0 total, 0 free, 0 used. 7131540 avail >> >>>>>>Mem >> >>>>>> >> >>>>>> >> >>>>>>On Thu, Dec 17, 2015 at 11:06 AM, Vahric Muhtaryan >> >>>>>><vah...@doruk.net.tr> >> >>>>>>wrote: >> >>>>>>> Hello , >> >>>>>>> >> >>>>>>> Cool ! Todays I am testing to but not such way just only KVM. >> >>>>>>> >> >>>>>>> Wonder 2/3 things ; >> >>>>>>> >> >>>>>>> 1) Are you using virtio? >> >>>>>>> <model type='virtio¹/> >> >>>>>>> >> >>>>>>> >> >>>>>>> 2) is your vm saturating %100 of cpu inside guest ? >> >>>>>>> >> >>>>>>> 3) Using OVS or bridge ? >> >>>>>>> >> >>>>>>> Regards >> >>>>>>> Vahric Muhtaryan >> >>>>>>> >> >>>>>>> On 17/12/15 17:41, "Satish Patel" <satish....@gmail.com> wrote: >> >>>>>>> >> >>>>>>>>I am doing some testing on Openstack VM network performance. >> >>>>>>>>following i am doing >> >>>>>>>> >> >>>>>>>>Comute node: 8 CPU / 32GB mem >> >>>>>>>>VM instance: 8vCPU / 8GB mem >> >>>>>>>> >> >>>>>>>>when i am running heavy load application, immediate my ping >> >>>>>>>>started breaking for VM.. but at same time if i ping Compute >> >>>>>>>>Host, its working fine without any packet loss. >> >>>>>>>> >> >>>>>>>>I have disabled GSO/TSO setting on eth0 but still same result. >> >>>>>>>>i have notice when it reach 250mbps my ping start breaking... >> >>>>>>>> >> >>>>>>>>_______________________________________________ >> >>>>>>>>Mailing list: >> >>>>>>>>http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> >>>>>>>>Post to : openstack@lists.openstack.org >> >>>>>>>>Unsubscribe : >> >>>>>>>>http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> >>>>>>> >> >>>>>>> >> >>>>> >> >>>>> >> >>> >> >>> >> >> _______________________________________________ >> Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack@lists.openstack.org >> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
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