* [Bug 1920871] [NEW] netperf UDP_STREAM high packet loss on QEMU tap network
@ 2021-03-23 6:42 Tao Xu
2021-05-14 18:54 ` [Bug 1920871] " Thomas Huth
2021-07-14 4:17 ` Launchpad Bug Tracker
0 siblings, 2 replies; 3+ messages in thread
From: Tao Xu @ 2021-03-23 6:42 UTC (permalink / raw)
To: qemu-devel
Public bug reported:
Hi, I boot a guest with "-netdev
tap,id=hn0,vhost=off,br=br0,helper=/usr/local/libexec/qemu-bridge-
helper" network option, and using "netperf -H IP -t UDP_STREAM" to test
guest UDP performance, I got the following output:
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 65507 10.00 144710 0 7583.56
212992 10.00 32 1.68
We can find most of UDP packets are lost. But I test another host machine or use "-netdev usr,xxxxx". I can got:
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 65507 10.00 18351 0 961.61
212992 10.00 18350 961.56
most of UDP packets are recived.
And If we check the tap qemu used, we can see:
ifconfig tap0
tap0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500
inet6 fe80::ecc6:21ff:fe6f:b174 prefixlen 64 scopeid 0x20<link>
ether ee:c6:21:6f:b1:74 txqueuelen 1000 (Ethernet)
RX packets 282 bytes 30097 (29.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9086214 bytes 12731596673 (11.8 GiB)
TX errors 0 dropped 16349024 overruns 0 carrier 0 collisions 0
lots of TX packets are dropped.
list other packet size:
➜ boot netperf -H 192.168.199.200 -t UDP_STREAM -- -m 1
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.199.200 () port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 1 10.00 2297941 0 1.84
212992 10.00 1462024 1.17
➜ boot netperf -H 192.168.199.200 -t UDP_STREAM -- -m 128
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.199.200 () port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 128 10.00 2311547 0 236.70
212992 10.00 1359834 139.25
** Affects: qemu
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1920871
Title:
netperf UDP_STREAM high packet loss on QEMU tap network
Status in QEMU:
New
Bug description:
Hi, I boot a guest with "-netdev
tap,id=hn0,vhost=off,br=br0,helper=/usr/local/libexec/qemu-bridge-
helper" network option, and using "netperf -H IP -t UDP_STREAM" to
test guest UDP performance, I got the following output:
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 65507 10.00 144710 0 7583.56
212992 10.00 32 1.68
We can find most of UDP packets are lost. But I test another host machine or use "-netdev usr,xxxxx". I can got:
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 65507 10.00 18351 0 961.61
212992 10.00 18350 961.56
most of UDP packets are recived.
And If we check the tap qemu used, we can see:
ifconfig tap0
tap0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500
inet6 fe80::ecc6:21ff:fe6f:b174 prefixlen 64 scopeid 0x20<link>
ether ee:c6:21:6f:b1:74 txqueuelen 1000 (Ethernet)
RX packets 282 bytes 30097 (29.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9086214 bytes 12731596673 (11.8 GiB)
TX errors 0 dropped 16349024 overruns 0 carrier 0 collisions 0
lots of TX packets are dropped.
list other packet size:
➜ boot netperf -H 192.168.199.200 -t UDP_STREAM -- -m 1
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.199.200 () port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 1 10.00 2297941 0 1.84
212992 10.00 1462024 1.17
➜ boot netperf -H 192.168.199.200 -t UDP_STREAM -- -m 128
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.199.200 () port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 128 10.00 2311547 0 236.70
212992 10.00 1359834 139.25
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1920871/+subscriptions
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug 1920871] Re: netperf UDP_STREAM high packet loss on QEMU tap network
2021-03-23 6:42 [Bug 1920871] [NEW] netperf UDP_STREAM high packet loss on QEMU tap network Tao Xu
@ 2021-05-14 18:54 ` Thomas Huth
2021-07-14 4:17 ` Launchpad Bug Tracker
1 sibling, 0 replies; 3+ messages in thread
From: Thomas Huth @ 2021-05-14 18:54 UTC (permalink / raw)
To: qemu-devel
The QEMU project is currently moving its bug tracking to another system.
For this we need to know which bugs are still valid and which could be
closed already. Thus we are setting the bug state to "Incomplete" now.
If the bug has already been fixed in the latest upstream version of QEMU,
then please close this ticket as "Fix released".
If it is not fixed yet and you think that this bug report here is still
valid, then you have two options:
1) If you already have an account on gitlab.com, please open a new ticket
for this problem in our new tracker here:
https://gitlab.com/qemu-project/qemu/-/issues
and then close this ticket here on Launchpad (or let it expire auto-
matically after 60 days). Please mention the URL of this bug ticket on
Launchpad in the new ticket on GitLab.
2) If you don't have an account on gitlab.com and don't intend to get
one, but still would like to keep this ticket opened, then please switch
the state back to "New" or "Confirmed" within the next 60 days (other-
wise it will get closed as "Expired"). We will then eventually migrate
the ticket automatically to the new system (but you won't be the reporter
of the bug in the new system and thus you won't get notified on changes
anymore).
Thank you and sorry for the inconvenience.
** Changed in: qemu
Status: New => Incomplete
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1920871
Title:
netperf UDP_STREAM high packet loss on QEMU tap network
Status in QEMU:
Incomplete
Bug description:
Hi, I boot a guest with "-netdev
tap,id=hn0,vhost=off,br=br0,helper=/usr/local/libexec/qemu-bridge-
helper" network option, and using "netperf -H IP -t UDP_STREAM" to
test guest UDP performance, I got the following output:
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 65507 10.00 144710 0 7583.56
212992 10.00 32 1.68
We can find most of UDP packets are lost. But I test another host machine or use "-netdev usr,xxxxx". I can got:
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 65507 10.00 18351 0 961.61
212992 10.00 18350 961.56
most of UDP packets are recived.
And If we check the tap qemu used, we can see:
ifconfig tap0
tap0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500
inet6 fe80::ecc6:21ff:fe6f:b174 prefixlen 64 scopeid 0x20<link>
ether ee:c6:21:6f:b1:74 txqueuelen 1000 (Ethernet)
RX packets 282 bytes 30097 (29.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9086214 bytes 12731596673 (11.8 GiB)
TX errors 0 dropped 16349024 overruns 0 carrier 0 collisions 0
lots of TX packets are dropped.
list other packet size:
➜ boot netperf -H 192.168.199.200 -t UDP_STREAM -- -m 1
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.199.200 () port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 1 10.00 2297941 0 1.84
212992 10.00 1462024 1.17
➜ boot netperf -H 192.168.199.200 -t UDP_STREAM -- -m 128
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.199.200 () port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 128 10.00 2311547 0 236.70
212992 10.00 1359834 139.25
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1920871/+subscriptions
^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug 1920871] Re: netperf UDP_STREAM high packet loss on QEMU tap network
2021-03-23 6:42 [Bug 1920871] [NEW] netperf UDP_STREAM high packet loss on QEMU tap network Tao Xu
2021-05-14 18:54 ` [Bug 1920871] " Thomas Huth
@ 2021-07-14 4:17 ` Launchpad Bug Tracker
1 sibling, 0 replies; 3+ messages in thread
From: Launchpad Bug Tracker @ 2021-07-14 4:17 UTC (permalink / raw)
To: qemu-devel
[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1920871
Title:
netperf UDP_STREAM high packet loss on QEMU tap network
Status in QEMU:
Expired
Bug description:
Hi, I boot a guest with "-netdev
tap,id=hn0,vhost=off,br=br0,helper=/usr/local/libexec/qemu-bridge-
helper" network option, and using "netperf -H IP -t UDP_STREAM" to
test guest UDP performance, I got the following output:
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 65507 10.00 144710 0 7583.56
212992 10.00 32 1.68
We can find most of UDP packets are lost. But I test another host machine or use "-netdev usr,xxxxx". I can got:
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 65507 10.00 18351 0 961.61
212992 10.00 18350 961.56
most of UDP packets are recived.
And If we check the tap qemu used, we can see:
ifconfig tap0
tap0: flags=4419<UP,BROADCAST,RUNNING,PROMISC,MULTICAST> mtu 1500
inet6 fe80::ecc6:21ff:fe6f:b174 prefixlen 64 scopeid 0x20<link>
ether ee:c6:21:6f:b1:74 txqueuelen 1000 (Ethernet)
RX packets 282 bytes 30097 (29.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 9086214 bytes 12731596673 (11.8 GiB)
TX errors 0 dropped 16349024 overruns 0 carrier 0 collisions 0
lots of TX packets are dropped.
list other packet size:
➜ boot netperf -H 192.168.199.200 -t UDP_STREAM -- -m 1
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.199.200 () port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 1 10.00 2297941 0 1.84
212992 10.00 1462024 1.17
➜ boot netperf -H 192.168.199.200 -t UDP_STREAM -- -m 128
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.199.200 () port 0 AF_INET
Socket Message Elapsed Messages
Size Size Time Okay Errors Throughput
bytes bytes secs # # 10^6bits/sec
212992 128 10.00 2311547 0 236.70
212992 10.00 1359834 139.25
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1920871/+subscriptions
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-07-14 4:30 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2021-03-23 6:42 [Bug 1920871] [NEW] netperf UDP_STREAM high packet loss on QEMU tap network Tao Xu
2021-05-14 18:54 ` [Bug 1920871] " Thomas Huth
2021-07-14 4:17 ` Launchpad Bug Tracker
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