are you using openvswitch? which version? if yes,is it consuming a lot of CPU?
On Wed, Dec 10, 2014 at 7:45 PM, André Aranha <andre.f.ara...@gmail.com> wrote: > Well, here we are using de Icehouse with Ubuntu 14.04 LTS > > We found this thread in the community and we apply the changes in the > compute nodes (change VHOST_NET_ENABLED to 1 in /etc/default/qemu-kvm). > After do this, a few instances the problem doesn't exists anymore. This link > show an investigation to find the problem. > > About the MTU in our cloud (using iperf), > > 1-from any the Desktop to the Network Node > MSS size 1448 bytes (MTU 1500 bytes, ethernet) > > 2-from any Desktop to the instance > MSS size 1348 bytes (MTU 1388 bytes, unknown interface) > > 3- from any instance to the Network Node > MSS size 1348 bytes (MTU 1388 bytes, unknown interface) > > 4- from any instance to the Desktop > MSS size 1348 bytes (MTU 1388 bytes, unknown interface) > > 5-from Network Node to any ComputeNode > MSS size 1448 bytes (MTU 1500 bytes, ethernet) > > 6-from any ComputeNode to NetworkNode > MSS size 1448 bytes (MTU 1500 bytes, ethernet) > > On 10 December 2014 at 10:31, somshekar kadam <som_ka...@yahoo.co.in> wrote: >> >> Sorry for wrong post mail chain. >> >> >> Regards >> Neelu >> >> >> On Wednesday, 10 December 2014 6:59 PM, somshekar kadam >> <som_ka...@yahoo.co.in> wrote: >> >> >> Hi All, >> >> Please recommend which stable Host OS to use for Controller and Compute >> node. >> I have tried Fedora20 seems lot of tweaking is required, corerct me If I >> am wrong. >> I see that most of it is tested on ubuntu and centos. >> I am planning to use JUNO stable version. >> Please help on this >> >> >> Regards >> Neelu >> >> >> On Wednesday, 10 December 2014 5:42 PM, Hannah Fordham >> <hford...@radiantworlds.com> wrote: >> >> >> I'm afraid we didn't, we're still struggling with some VMs with this >> problem. Sorry! >> >> On 9 December 2014 14:09:32 GMT+00:00, "André Aranha" >> <andre.f.ara...@gmail.com> wrote: >> >> Hi, >> >> We are with the same issue here, and already try some solutions that >> didn't work at all. Did you solved this problem? >> >> Thank you, >> Andre Aranha >> >> On 27 August 2014 at 08:17, Hannah Fordham <hford...@radiantworlds.com> >> wrote: >> >> I’ve been trying to figure this one out for a while, so I’ll try and be as >> thorough as possible in this post but apologies if I miss anything pertinent >> out. >> >> First off, I’m running a set up with one control node and 5 compute nodes, >> all created using the Stackgeek scripts - >> http://www.stackgeek.com/guides/gettingstarted.html. The first two (compute1 >> and compute 2) were created at the same time, compute3, 4 and 5 were added >> as needed later. My VMs are predominantly CentOS, while my Openstack nodes >> are Ubuntu 14.04.1 >> >> The symptom: irregular high latency/packet loss to VMs on all compute >> boxes except compute3. Mostly a pain when trying to do anything via ssh on a >> VM because the lag makes it difficult to do anything, but it shows itself >> quite nicely through pings as well: >> --- 10.0.102.47 ping statistics --- >> 111 packets transmitted, 103 received, 7% packet loss, time 110024ms >> rtt min/avg/max/mdev = 0.096/367.220/5593.100/1146.920 ms, pipe 6 >> >> >> I have tested these pings: >> VM to itself (via its external IP) seems fine >> VM to another VM is not fine >> Hosting compute node to VM is not fine >> My PC to VM is not fine (however the other way round works fine) >> >> >> Top on a (32 core) compute node with laggy VMs: >> top - 12:09:20 up 33 days, 21:35, 1 user, load average: 2.37, 4.95, 6.23 >> Tasks: 431 total, 2 running, 429 sleeping, 0 stopped, 0 zombie >> %Cpu(s): 0.6 us, 3.4 sy, 0.0 ni, 96.0 id, 0.0 wa, 0.0 hi, 0.0 si, >> 0.0 st >> KiB Mem: 65928256 total, 44210348 used, 21717908 free, 341172 buffers >> KiB Swap: 7812092 total, 1887864 used, 5924228 free. 7134740 cached >> Mem >> >> And for comparison, on the one compute node that doesn’t seem to be >> suffering from this: >> top - 12:12:20 up 33 days, 21:38, 1 user, load average: 0.28, 0.18, 0.15 >> Tasks: 399 total, 3 running, 396 sleeping, 0 stopped, 0 zombie >> %Cpu(s): 0.3 us, 0.1 sy, 0.0 ni, 98.9 id, 0.6 wa, 0.0 hi, 0.0 si, >> 0.0 st >> KiB Mem: 65928256 total, 49986064 used, 15942192 free, 335788 buffers >> KiB Swap: 7812092 total, 919392 used, 6892700 free. 39272312 cached >> Mem >> >> Top on a laggy VM: >> top - 11:02:53 up 27 days, 33 min, 3 users, load average: 0.00, 0.00, >> 0.00 >> Tasks: 91 total, 1 running, 90 sleeping, 0 stopped, 0 zombie >> Cpu(s): 0.2%us, 0.1%sy, 0.0%ni, 99.5%id, 0.1%wa, 0.0%hi, 0.0%si, >> 0.0%st >> Mem: 1020400k total, 881004k used, 139396k free, 162632k buffers >> Swap: 1835000k total, 14984k used, 1820016k free, 220644k cached >> >> http://imgur.com/blULjDa shows the hypervisor panel of Horizon. As you can >> see, Compute 3 has fewer resources used, but none of the compute nodes >> should be anywhere near overloaded from what I can tell. >> >> Any ideas? Let me know if I’m missing anything obvious that would help >> with figuring this out! >> >> Hannah >> >> >> >> >> >> >> *********** >> >> Radiant Worlds Limited is registered in England (company no: 07822337). >> This message is intended solely for the addressee and may contain >> confidential information. If you have received this message in error please >> send it back to us and immediately and permanently delete it from your >> system. Do not use, copy or disclose the information contained in this >> message or in any attachment. Please also note that transmission cannot be >> guaranteed to be secure or error-free. >> >> _______________________________________________ >> 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 >> >> >> >> -- >> Sent from my Android device with K-9 Mail. Please excuse my brevity. >> >> >> *********** >> >> Radiant Worlds Limited is registered in England (company no: 07822337). >> This message is intended solely for the addressee and may contain >> confidential information. If you have received this message in error please >> send it back to us and immediately and permanently delete it from your >> system. Do not use, copy or disclose the information contained in this >> message or in any attachment. Please also note that transmission cannot be >> guaranteed to be secure or error-free. >> >> _______________________________________________ >> 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 >> >> > > > _______________________________________________ > 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
