Bug 1259113

Summary: Windows guest hang about 1 min when netperf connect to the server
Product: Red Hat Enterprise Linux 7 Reporter: jingzhao <jinzhao>
Component: qemu-kvm-rhevAssignee: Yvugenfi <yvugenfi>
Status: CLOSED WONTFIX QA Contact: Virtualization Bugs <virt-bugs>
Severity: high Docs Contact:
Priority: high    
Version: 7.2CC: huding, jasowang, jinzhao, juzhang, knoel, virt-maint, xfu
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2016-04-17 11:16:35 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
The result for netperf ran on win10 guest none

Description jingzhao 2015-09-02 01:12:37 UTC 
Description of problem:
Windows guest hang about 1 min and didn't do any operation when netperf connect to the server

Version-Release number of selected component (if applicable):
qemu-kvm-rhev-2.3.0-21.el7
Host kernel: kernel-3.10.0-312.el7
Guest: win10-32

How reproducible:
100%

Steps to Reproduce:
1. boot win10 guest with cli:
/usr/libexec/qemu-kvm \
-M pc \
-cpu IvyBridge \
-nodefaults -rtc base=utc -no-hpet \
-m 2G \
-smp 4,sockets=2,cores=2,threads=1 \
-enable-kvm \
-name rhel7.2 \
-uuid 990ea161-6b67-47b2-b803-19fb01d30d12 \
-smbios type=1,manufacturer='Red Hat',product='RHEV Hypervisor',version=el6,serial=koTUXQrb,uuid=feebc8fd-f8b0-4e75-abc3-e63fcdb67170 \
-k en-us \
-monitor stdio \
-qmp tcp:0:6661,server,nowait \
-boot menu=on \
-bios /usr/share/seabios/bios.bin \
-serial unix:/tmp/serial0,server,nowait \
-vga cirrus \
-vnc :0  \
-netdev tap,id=hostnet0,vhost=on \
-device rtl8139,netdev=hostnet0,id=net0,mac=54:52:00:B6:40:21 \
-chardev socket,id=seabios,path=/tmp/seabios,server,nowait \
-device isa-debugcon,chardev=seabios,iobase=0x402 \
-usb \
-device usb-tablet,id=tablet0 \
-drive file=/home/window.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,werror=stop,rerror=stop,aio=threads \
-device ide-hd,drive=drive-virtio-disk0,id=ide-disk,bootindex=1 \
2.Run netperf server (netperf-debuginfo-2.6.0-7.el7.x86_64)with cli:"netserver start"
3.Run netperf client on win10 guest

Actual results:
win10 guest hang about 1 min and didn't do any operation, and then will display the result, the elpsed time are longer than the time which we set, please check the attachment for the netperf result.

Expected results:
netperf run successfully and win10 guest run successfully

Additional info:
I have verified with virtio-net-pci net device and win10 guest can run successfully
Comment 1 jingzhao 2015-09-02 01:14:13 UTC 
Created attachment 1069259 [details]
The result for netperf ran on win10 guest
Comment 7 Yvugenfi@redhat.com 2015-09-08 09:49:38 UTC 
Can you please provide the netperf command that was used on VM?

Thanks.
Comment 8 jingzhao 2015-09-08 10:23:06 UTC 
(In reply to Yan Vugenfirer from comment #7)
> Can you please provide the netperf command that was used on VM?
> 
> Thanks.

the cmd which we used: netperf -H serverip -l 60