Fix released in 3.19.0-47.53
** Changed in: linux (Ubuntu Vivid)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1521053
Title:
Network Performance droppi
No dropping anymore with -proposed kernel
** Tags removed: verification-needed-vivid
** Tags added: verification-done-vivid
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Title:
Network Perf
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
vivid' to 'verification-done-vivid'.
If verification is not done by 5 working days from tod
** Changed in: linux (Ubuntu Vivid)
Status: In Progress => Fix Committed
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Title:
Network Performance dropping between vms on different loc
** Tags added: kernel-da-key kernel-hyper-v
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Title:
Network Performance dropping between vms on different location in
Azure
To manage notifica
@decui
Thanks, I confirmed it works.
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Title:
Network Performance dropping between vms on different location in
Azure
To manage notifications
BTW, I'm not sure if comment #10 could helps or not -- just FYI. :-)
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Title:
Network Performance dropping between vms on different location in
When the issue happens (it looks due to the layout of the struct somehow...),
can you try the small workaround patch at
https://patchwork.ozlabs.org/patch/518469/?
I paste it below:
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 88a0069..7233790 100644
--- a/include/li
@timg-tpi
I reverted it on latest ubuntu-vivid, but there is variable dependency
with the other related commits, so I patched like below
it is better, but still dropping is there.
original 100 -> 0.3
below patch 100 -> 15~20
Thanks.
#
Seyeong - can you try reverting 'hv_netvsc: Implement partial copy into
send buffer' ? This backport was dropped from Utopic because it caused
regressions. Perhaps the same is true of Vivid.
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non patched kernel perf stat
─
[ 3] local 10.13.0.4 port 36554 connected with 104.40.129.48 port 8042
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-377.9 sec 100 MBytes 0.26 MBytes/sec
Performance counter stats for 'iperf -c 104.40.129.48 -f M -p 8042 -n
100M':
452.813718
** Changed in: linux (Ubuntu Vivid)
Status: Confirmed => In Progress
** Changed in: linux (Ubuntu Vivid)
Assignee: (unassigned) => Seyeong Kim (xtrusia)
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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** 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
Environment
- Ubuntu trusty 14.04.3 (ubuntu-vivid kernel)
- DS2, West Europe <-> North Europe, Azure
- test app : netcat+nload, iperf
Logs
1.
===
The customer provide us some analysis a
Testing logs
http://pastebin.ubuntu.com/13657083/
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Title:
Network Performance dropping between vms on different location in
Azure
To manage n
It also can be reproduced by using iperf
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Title:
Network Performance dropping between vms on different location in
Azure
To manage notificatio
** Changed in: linux (Ubuntu)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu Vivid)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu)
Assignee: Joseph Salisbury (jsalisbury) => (unassigned)
** Changed in: linux (Ubuntu Vivid)
Assignee: Joseph S
Hello Joseph
I tested your test kernel, and confirmed it's working fine.
Thanks
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Title:
Network Performance dropping between vms on different l
I built a Vivid test kernel with a cherry pick of commit 0d158852a. The
test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1521053/
Can you test this kernel and see if it resolves this bug? If it does,
we can submit an SRU request for that commit.
Thanks in advance!
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** Changed in: linux (Ubuntu Vivid)
Status: New => In Progress
** Changed in: linux (Ubuntu Vivid)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Incomplete => In Progress
** Changed in: lin
** Also affects: linux (Ubuntu Vivid)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Vivid)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
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