I have set-up xen on my Intel quad core server. Now running different experiment
to measure network throughput in virtualized environment. these are some of the
results:
Netperf-4.5 results for inter-domain communication.
Sr.No. Client Server Time(sec)
Throughput(Mbps)
1 Guest-1 Dom0
180 2398 - 2500
2 Dom0 Guest-1
180 1636 - 1883 3
Dom0 Dom0 180
2200
4 Guest-1 Guest-1
180 1921
5 Guest-1 Guest-2
180 0.14 - 0.29
You
can see throughput is ok in all cases else Guest to Guest
communication.
If anyone has some idea, please share. What could be the reason?
Regards,
Fasiha
Fasiha Ashraf
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On Fri, Sep 4, 2009 at 7:22 PM, Fasiha Ashraf<feehapk@yahoo.co.in> wrote:> 5 Guest-1 Guest-2 > 180 0.14 - 0.29 > > You can see throughput is ok in all cases else Guest to Guest communication. > If anyone has some idea, please share. What could be the reason?What is Guest1 and Guest2? PV domU? HVM domU? What OS? Is it on the same dom0 or on different dom0? What is dom0 <-> Guest2 netperf result? Also, what OS/Xen version you use on dom0? _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
What is Guest1 and Guest2? These are PV domUs of Fedora11(32bit). Is it on the same dom0 or on different dom0? Yes, they are on the same host on same physical machine. What is dom0 <-> Guest2 netperf result? Sr.No. Client Server Time(sec) Throughput(Mbps) 1 Guest-1 Dom0 180 2398 - 2500 2 Dom0 Guest-1 180 1636 - 1883 Also, what OS/Xen version you use on dom0? Dom0 OS is also Fedora11. [root@HPCNL-SR-2 ~]# xm info host : HPCNL-SR-2 release : 2.6.30-rc6-tip version : #1 SMP Tue Aug 25 12:26:16 PKST 2009 machine : i686 nr_cpus : 8 nr_nodes : 1 cores_per_socket : 4 threads_per_core : 1 cpu_mhz : 1995 hw_caps : bfebfbff:20100000:00000000:00000140:000ce33d:00000000:00000001:00000000 virt_caps : hvm total_memory : 8186 free_memory : 2 node_to_cpu : node0:0-7 node_to_memory : node0:2 xen_major : 3 xen_minor : 4 xen_extra : .2-rc1-pre xen_caps : xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p xen_scheduler : credit xen_pagesize : 4096 platform_params : virt_start=0xf5800000 xen_changeset : Thu Aug 20 08:30:24 2009 +0100 19740:7a57911ff09e cc_compiler : gcc version 4.4.0 20090506 (Red Hat 4.4.0-4) (GCC) cc_compile_by : root cc_compile_domain : (none) cc_compile_date : Tue Aug 25 09:55:27 PKST 2009 xend_config_format : 4 Regards, Fasiha Ashraf --- On Fri, 4/9/09, Fajar A. Nugraha <fajar@fajar.net> wrote: From: Fajar A. Nugraha <fajar@fajar.net> Subject: Re: [Xen-users] bridge throughput problem To: "Fasiha Ashraf" <feehapk@yahoo.co.in> Cc: xen-users@lists.xensource.com Date: Friday, 4 September, 2009, 5:49 PM On Fri, Sep 4, 2009 at 7:22 PM, Fasiha Ashraf<feehapk@yahoo.co.in> wrote:> 5 Guest-1 Guest-2 > 180 0.14 - 0.29 > > You can see throughput is ok in all cases else Guest to Guest communication. > If anyone has some idea, please share. What could be the reason?What is Guest1 and Guest2? PV domU? HVM domU? What OS? Is it on the same dom0 or on different dom0? What is dom0 <-> Guest2 netperf result? Also, what OS/Xen version you use on dom0? See the Web's breaking stories, chosen by people like you. Check out Yahoo! Buzz. http://in.buzz.yahoo.com/ _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Sat, Sep 5, 2009 at 12:06 PM, Fasiha Ashraf<feehapk@yahoo.co.in> wrote:> What is Guest1 and Guest2? > These are PV domUs of Fedora11(32bit). > Is it on the same dom0 or on different dom0? > Yes, they are on the same host on same physical machine.Perhaps it''s CPU/interrupt issue. Can you make sure that dom0, guest1, and guest2 ONLY use 1 vcpu each, and they''re located on DIFFERENT physical cpu/core (xm vcpu-set, xm vcpu-pin), and repeat the test. Also, have another window running for each dom0/domU, and observe CPU load during that test with "top". Which domain uses 100%? Is it user or system? -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users