Hi Shanker, Thanks for your suggestion, I would give it a try. Isolating VM traffic from storage traffic, that's the best practice. I wish I had a chance to make recommendations about the design from the start.
I also think about upgrading openvswitch, there seems a lot of performance improvement. But there is not much information out there, especially the compability and which version is supported with Xenserver. Btw, we are now focusing on control those VMs that are flooding packets. The system now can sustain a lot more flows going through. Best Regards, The Hung -----Original Message----- From: Shanker Balan [mailto:shanker.ba...@shapeblue.com] Sent: Tuesday, April 29, 2014 4:44 PM To: CloudStack-Users Subject: Re: Frequent NFS not responding, timed out issue Hi, Comments inline. On 28-Apr-2014, at 1:45 pm, Hung Nguyen The <hung...@saobacdau.vn> wrote: > Thanks Shanker. I don't have total control on the system and it lacks a > proper monitoring system. Do give collectd + SNMP a try. Works very well for me. > After some more investigations we believe the high latency is due to to > openvswitch, and some VMs are flooding packets. Ouch. You could have a separate storage network to isolate VM traffic from storage traffic. > > Some tunings have done like increase Flow-Eviction-thresthold and the network > is now much more stable. > That would be greate if someone can guide me somewhere with > information regarding improve performance of open vswitch on Xenserver 6.2 > Btw, OVS is 1.4.6 version. Have you considered upgrading openvswitch to a newer version? I personally have not tried updating openvswitch on xenserver but should be possible using the DDK. YMMV! http://git.openvswitch.org/cgi-bin/gitweb.cgi?p=openvswitch;a=blob_plain;f=INSTALL.XenServer;hb=HEAD -- @shankerbalan M: +91 98860 60539 | O: +91 (80) 67935867 shanker.ba...@shapeblue.com | www.shapeblue.com | Twitter:@shapeblue ShapeBlue Services India LLP, 22nd floor, Unit 2201A, World Trade Centre, Bangalore - 560 055 Need Enterprise Grade Support for Apache CloudStack? Our CloudStack Infrastructure Support<http://shapeblue.com/cloudstack-infrastructure-support/> offers the best 24/7 SLA for CloudStack Environments. Apache CloudStack Bootcamp training courses **NEW!** CloudStack 4.2.1 training<http://shapeblue.com/cloudstack-training/> 28th-29th May 2014, Bangalore. Classromm<http://shapeblue.com/cloudstack-training/> 16th-20th June 2014, Region A. Instructor led, On-line<http://shapeblue.com/cloudstack-training/> 23rd-27th June 2014, Region B. Instructor led, On-line<http://shapeblue.com/cloudstack-training/> 15th-20th September 2014, Region A. Instructor led, On-line<http://shapeblue.com/cloudstack-training/> 22nd-27th September 2014, Region B. Instructor led, On-line<http://shapeblue.com/cloudstack-training/> 1st-6th December 2014, Region A. Instructor led, On-line<http://shapeblue.com/cloudstack-training/> 8th-12th December 2014, Region B. Instructor led, On-line<http://shapeblue.com/cloudstack-training/> This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Shape Blue Ltd or related companies. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue Services India LLP is a company incorporated in India and is operated under license from Shape Blue Ltd. Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is operated under license from Shape Blue Ltd. ShapeBlue is a registered trademark.
