I can confirm that I’ve seen the same behaviors. I’ll try to pull some numbers but the truth is that debian based guest versions perform WAY better than CentOS guests.
From all of my testing IMHO it is the host (illumos) virtio implementation. I only say this because I see such drastic performance results between different guest virtio driver version on illumos hosts that I do not see on Linux hosts. I can also confirm that I did not see this issue on SmartOS and I did test, Widows, Centos, And Ubuntu and was able to achieve near wire speed guest-2-guest on different SmartOS hosts. Here is my original thread posted about this in march: http://lists.omniti.com/pipermail/omnios-discuss/2015-March/004539.html John Barfield / Sr Principal Engineer +1 (214) 425-0783/ john.barfi...@bissinc.com BISS, Inc. Office: +1 (214) 506-8354 4925 Greenville Ave Suite 900 Dallas, TX 75206 support.bissinc.com <http://htmlsig.com/support.bissinc.com> This e-mail message may contain confidential or legally privileged information and is intended only for the use of the intended recipient(s). Any unauthorized disclosure, dissemination, distribution, copying or the taking of any action in reliance on the information herein is prohibited. E-mails are not secure and cannot be guaranteed to be error free as they can be intercepted, amended, or contain viruses. Anyone who communicates with us by e-mail is deemed to have accepted these risks. Company Name is not responsible for errors or omissions in this message and denies any responsibility for any damage arising from the use of e-mail. Any opinion and other statement contained in this message and any attachment are solely those of the author and do not necessarily represent those of the company. On 4/11/15, 12:24 AM, "Tobias Oetiker" <t...@oetiker.ch> wrote: >Hi Nigel, > >Yesterday Nigel W wrote: > >> On Fri, Apr 10, 2015 at 7:52 AM, Tobias Oetiker <t...@oetiker.ch> wrote: >> >> > Hi, >> > >> > For the past few months I have been struggling with bad KVM nework >> > performance on omnios R12 and R14. Especially under >> > bidirectional load things are looking terrible (factor 1000). >> > >> > Every now and then there is a report on the mailinglist about such >> > problems, but we have not yet seen anything really helpful. >> > >> > In my tests I have been using iperf to collect streaming tcp >> > network performance on verious configurations. >> > >> > I realy want to see this solved. As an initial effort, I have setup >> > a google spreadsheet to collect performance data. The sheet >> > includes instructions on how to test and lets you record your test >> > results: >> > >> > http://goo.gl/Vr1tC6 >> > >> > Please add your test results, or even better, figure out what is going >> > wrong! >> > >> > cheers >> > tobi >> > >> Is this measurement between the kvm guest and the host or the kvm guest >> and another (presumably native) host on the network? > > >the measurement is between the kvm guest and the host where kvm is >running on. > >cheers >tobi > >> >> Thanks, >> >> >> >> ------------------------------------------- >> smartos-discuss >> Archives: https://www.listbox.com/member/archive/184463/=now >> RSS Feed: >>https://www.listbox.com/member/archive/rss/184463/25228365-edc0b66b >> Modify Your Subscription: >>https://www.listbox.com/member/?member_id=25228365&id_secret=25228365-9b5 >>303ef >> Powered by Listbox: http://www.listbox.com >> > >-- >Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland >www.oetiker.ch t...@oetiker.ch +41 62 775 9902 > >_______________________________________________ >OmniOS-discuss mailing list >OmniOS-discuss@lists.omniti.com >http://lists.omniti.com/mailman/listinfo/omnios-discuss _______________________________________________ OmniOS-discuss mailing list OmniOS-discuss@lists.omniti.com http://lists.omniti.com/mailman/listinfo/omnios-discuss