It's not normal, and I think first we need figure out it's DPDK issue or OVS issue or some configuration issue. Are you using 2 10G port to inject traffic? What's your qemu launch commands for each VM? Can you use "top -H" command to check the core usage when u running the case2 and case3?
-----Original Message----- From: $BE"3.Xl(B [mailto:[email protected]] Sent: Wednesday, September 7, 2016 10:04 AM To: Xu, Qian Q <qian.q.xu at intel.com>; users at dpdk.org Subject: RE: 2VMs with dpdk app-testpmd effect each other So my question is : is it normal ? Is there any way i can solve the problem? Is the problem related to qemu-img? ________________________________________ $BWO(B: $BE"3.Xl(B $B4s7oF|4|(B: 2016$BG/(B9$B7n(B2$BF|(B $B2<8a(B 01:37 $B;j(B: Xu, Qian Q; users at dpdk.org $B<g;](B: RE: 2VMs with dpdk app-testpmd effect each other I am sure that VM1 and VM2 are using different core with different coremask setting. Yes, I know that default fwd enging is IO fwd. And fwd engine will start while testpmd is started. I used "stop" command to stop fwd engine inside testpmd. The I can see effect ion on the other VM. -----Original Message----- From: Xu, Qian Q [mailto:[email protected]] Sent: Thursday, September 01, 2016 9:36 AM To: $BE"3.Xl(B; users at dpdk.org Subject: RE: 2VMs with dpdk app-testpmd effect each other Maybe VM1 and VM2 are using the same core for the forwarding? I guess 2VMs are using the same core for fwd. What do you mean by testpmd fwd=none, if you don't set the fwd mode, it's IO fwd. -----Original Message----- From: users [mailto:[email protected]] On Behalf Of ??? Sent: Thursday, September 1, 2016 8:47 AM To: users at dpdk.org Subject: [dpdk-users] 2VMs with dpdk app-testpmd effect each other Hi all I am facing a wierd situation when i start testpmd app inside two VMs( Case 3 ). Please see the following setup. Hardware Information System Dell Inc. PowerEdge R630 $B!!(B $B!!(B BIOS Dell Inc. version1.0.4 $B!!(B CPU Intel(R) Xeon(R) x86_64 E5-2630 v3 2.40 Ghz $B!!(B Processor(s): 16 $B!!(B $B!!(B Cache: 20480 KB $B!!(B $B!!(B $B!!(B Memory Size: 16 GB*6 $B!!(B $B!!(B $B!!(B $B!!(B Type: DDR4 $B!!(B $B!!(B Speed: 2133MHz $B!!(B $B!!(B $B!!(B Ethernet Controller Intel Corporation Ethernet 10G 2P X520 Adapter *2 Software information Qemu = qemu-2.5.1.1 DPDK = dpdk-2.2.0 OVS = ovs-branch-2.5 Input stream : 10Gbps(5G with vlan 1001 and 5G with vlan 1002) which is generated by Spirent testcenter | VM1 | | VM2 | $B",(B1001$B"-(B $B",(B1002$B"-(B ----------------------- | OVS | ----------------------- $B",(B $B"-(B ----------------------- TestCenter | ----------------------- ovs setup: modprobe openvswitch rm -rf /usr/local/var/run/openvswitch/* rm -rf /opt/ovs-vswitchd.log modprobe uio insmod $DPDK_BUILD/kmod/igb_uio.ko $DPDK_DIR/tools/dpdk_nic_bind.py --bind=igb_uio p3p1 $DPDK_DIR/tools/dpdk_nic_bind.py --bind=igb_uio p3p2 $DPDK_DIR/tools/dpdk_nic_bind.py --status rm /usr/local/etc/openvswitch/conf.db -rf mkdir -p /usr/local/etc/openvswitch mkdir -p /usr/local/var/run/openvswitch cd $OVS_DIR ./ovsdb/ovsdb-tool create /usr/local/etc/openvswitch/conf.db ./vswitchd/vswitch.ovsschema ./ovsdb/ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock --remote=db:Open_vSwitch,Open_vSwitch,manager_options --private-key=db:Open_vSwitch,SSL,private_key --certificate=db:Open_vSwitch,SSL,certificate --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert --pidfile --detach ./utilities/ovs-vsctl --no-wait init ./utilities/ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true ./vswitchd/ovs-vswitchd --dpdk --socket-mem 4096,4096 -n 4 -- unix:/usr/local/var/run/openvswitch/db.sock --log-file=$OVS_LOG --pidfile --detach Case 1: VM1 start testpmd, fwd = iofwd VM2 start testpmd,fwd = iofwd Result = Spirent testcenter show output stream is reaching line speed 10G. Case 2: VM1 testpmd = started, fwd = iofwd VM2 testpmd=stopped,fwd = none Result = Spirent testcenter show output stream is reaching 5G. Which is reasonable. Case 3: VM1 testpmd = started, fwd = iofwd VM2 testpmd = started ,fwd = none Result = Spirent testcenter show output stream is less than 200Mbps. I am confused about the case 3. What is the reason VM2 effects VM1 so significantly? How can i solve such problem? I will appreciate for your answer. Thx ============================ $BE"3.Xl(B Kai-Mao Cheng $BCf2ZEE?.8&5f1!(B $BynIQLVO)8&5f=j(B 231$B7WaA(B $BEEOC(B:03-4244093 $B<j5!(B:0912314847 E-mail:kmcheng at cht.com.tw ============================ Please be advised that this email message (including any attachments) contains confidential information and may be legally privileged. If you are not the intended recipient, please destroy this message and all attachments from your system and do not further collect, process, or use them. 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