** Description changed:
[Impact]
- Ubuntu VM in Azure has network performance issue
- Normal bandwidth is 50MB/s ~ 100MB/s, but it's 0.3MB/s when dropping happens.
+ Ubuntu VMs between different location, especially North Europe and East
Eruope in this case) in Azure have network performance issue.
+ It should be around 100MB/s speed between them. but it's around 0.3MB/s when
dropping happens.
[Fix]
Upstream development
0d158852a8089099a6959ae235b20f230871982f ("hv_netvsc: Clean up two unused
variables")
It's affected over 3.19.0-28-generic (ubuntu-vivid)
With this commit, I confirmed that the problem has gone by the testing.
Test Logs
http://pastebin.ubuntu.com/13657083/
[Testcase]
Make 2 VMs on North Europe, West Europe each.
Then run below test script
NE VM
- netcat & nload
while true; do netcat -l 8080 < /dev/zero; done;
nload -u M eth0 ( need nload pkg )
- iperf
- iperf -s -f M
+ iperf -s -f M
WE VM
- netcat
for i in {1..1000}
do
timeout 30s nc NE_HOST 8080 > /dev/null
done
- iperf
- iperf -c HOST -f M
+ iperf -c HOST -f M
- Network performance dropping can be seen frequently in nload graph.
+ Network performance dropping can be seen frequently.
** Description changed:
[Impact]
- Ubuntu VMs between different location, especially North Europe and East
Eruope in this case) in Azure have network performance issue.
+ Ubuntu VMs between different location, especially North Europe and East
Europe in this case) in Azure have network performance issue.
It should be around 100MB/s speed between them. but it's around 0.3MB/s when
dropping happens.
[Fix]
Upstream development
0d158852a8089099a6959ae235b20f230871982f ("hv_netvsc: Clean up two unused
variables")
It's affected over 3.19.0-28-generic (ubuntu-vivid)
With this commit, I confirmed that the problem has gone by the testing.
Test Logs
http://pastebin.ubuntu.com/13657083/
[Testcase]
Make 2 VMs on North Europe, West Europe each.
Then run below test script
NE VM
- netcat & nload
while true; do netcat -l 8080 < /dev/zero; done;
nload -u M eth0 ( need nload pkg )
- iperf
iperf -s -f M
WE VM
- netcat
for i in {1..1000}
do
timeout 30s nc NE_HOST 8080 > /dev/null
done
- iperf
iperf -c HOST -f M
Network performance dropping can be seen frequently.
** Description changed:
[Impact]
- Ubuntu VMs between different location, especially North Europe and East
Europe in this case) in Azure have network performance issue.
+ Ubuntu VMs between different location, especially North Europe and East
Europe in this case, in Azure have network performance issue.
It should be around 100MB/s speed between them. but it's around 0.3MB/s when
dropping happens.
[Fix]
Upstream development
0d158852a8089099a6959ae235b20f230871982f ("hv_netvsc: Clean up two unused
variables")
It's affected over 3.19.0-28-generic (ubuntu-vivid)
With this commit, I confirmed that the problem has gone by the testing.
Test Logs
http://pastebin.ubuntu.com/13657083/
[Testcase]
Make 2 VMs on North Europe, West Europe each.
Then run below test script
NE VM
- netcat & nload
while true; do netcat -l 8080 < /dev/zero; done;
nload -u M eth0 ( need nload pkg )
- iperf
iperf -s -f M
WE VM
- netcat
for i in {1..1000}
do
timeout 30s nc NE_HOST 8080 > /dev/null
done
- iperf
iperf -c HOST -f M
Network performance dropping can be seen frequently.
** Description changed:
[Impact]
Ubuntu VMs between different location, especially North Europe and East
Europe in this case, in Azure have network performance issue.
It should be around 100MB/s speed between them. but it's around 0.3MB/s when
dropping happens.
[Fix]
Upstream development
0d158852a8089099a6959ae235b20f230871982f ("hv_netvsc: Clean up two unused
variables")
It's affected over 3.19.0-28-generic (ubuntu-vivid)
-
- With this commit, I confirmed that the problem has gone by the testing.
-
- Test Logs
- http://pastebin.ubuntu.com/13657083/
[Testcase]
Make 2 VMs on North Europe, West Europe each.
Then run below test script
NE VM
- netcat & nload
while true; do netcat -l 8080 < /dev/zero; done;
nload -u M eth0 ( need nload pkg )
- iperf
iperf -s -f M
WE VM
- netcat
for i in {1..1000}
do
timeout 30s nc NE_HOST 8080 > /dev/null
done
- iperf
iperf -c HOST -f M
Network performance dropping can be seen frequently.
+
+ More Tests
+ http://pastebin.ubuntu.com/13657083/
** Description changed:
[Impact]
- Ubuntu VMs between different location, especially North Europe and East
Europe in this case, in Azure have network performance issue.
+ Ubuntu VMs between different location in Azure , especially North Europe and
East Europe in this case, have network performance issue.
It should be around 100MB/s speed between them. but it's around 0.3MB/s when
dropping happens.
[Fix]
Upstream development
0d158852a8089099a6959ae235b20f230871982f ("hv_netvsc: Clean up two unused
variables")
It's affected over 3.19.0-28-generic (ubuntu-vivid)
[Testcase]
Make 2 VMs on North Europe, West Europe each.
Then run below test script
NE VM
- netcat & nload
while true; do netcat -l 8080 < /dev/zero; done;
nload -u M eth0 ( need nload pkg )
- iperf
iperf -s -f M
WE VM
- netcat
for i in {1..1000}
do
timeout 30s nc NE_HOST 8080 > /dev/null
done
- iperf
iperf -c HOST -f M
Network performance dropping can be seen frequently.
- More Tests
+ More Tests
http://pastebin.ubuntu.com/13657083/
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1521053
Title:
Network Performance dropping between vms on different location in
Azure
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1521053/+subscriptions
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