[Qemu-devel] [Bug 1556306] [NEW] vhost-user: qemu stops processing packets under high load of traffic

[Qemu-devel] [Bug 1556306] [NEW] vhost-user: qemu stops processing packets under high load of traffic

[Vincent JARDIN]

Public bug reported:

Description of problem:
- qemu socket becomes full, causing qemu to send incomplete
SET_VRING_CALL messages to vhost-user backend (without proper fd set in
ancillary data).
- after some time, some interrupts are lost, causing the VM to stop
transmitting packets.

How reproducible:
Run a stress tests of a vhost-user interface using an UDP
traffic generator. Traffic generator (IXIA) was connected to 2 physical ports that are in turn connected to 2 virtio ports through a linux bridge, VM
(running linux) doing routing to forward packets between the 2 virtio ports.
When traffic reaches high pps rates of small packets,

Actual results:
- VM stop transmitting packets

Expected results:
- VM should never stop transmitting packets

Additional info:
We do propose a fix at:
  http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg00652.html

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: 6wind

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1556306

Title:
   vhost-user: qemu stops processing packets under high load of traffic

Status in QEMU:
  New

Bug description:
  Description of problem:
  - qemu socket becomes full, causing qemu to send incomplete
  SET_VRING_CALL messages to vhost-user backend (without proper fd set in
  ancillary data).
  - after some time, some interrupts are lost, causing the VM to stop
  transmitting packets.

  How reproducible:
  Run a stress tests of a vhost-user interface using an UDP
  traffic generator. Traffic generator (IXIA) was connected to 2 physical ports that are in turn connected to 2 virtio ports through a linux bridge, VM
  (running linux) doing routing to forward packets between the 2 virtio ports.
  When traffic reaches high pps rates of small packets,

  Actual results:
  - VM stop transmitting packets

  Expected results:
  - VM should never stop transmitting packets

  Additional info:
  We do propose a fix at:
    http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg00652.html

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1556306/+subscriptions

[Qemu-devel] [Bug 1556306] Re: vhost-user: qemu stops processing packets under high load of traffic

[Vincent JARDIN]

for tracking,
  http://git.qemu.org/?p=qemu.git;a=patch;h=5669655aafdb88a8797c74a989dd0c0ebb1349fa

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1556306

Title:
   vhost-user: qemu stops processing packets under high load of traffic

Status in QEMU:
  New

Bug description:
  Description of problem:
  - qemu socket becomes full, causing qemu to send incomplete
  SET_VRING_CALL messages to vhost-user backend (without proper fd set in
  ancillary data).
  - after some time, some interrupts are lost, causing the VM to stop
  transmitting packets.

  How reproducible:
  Run a stress tests of a vhost-user interface using an UDP
  traffic generator. Traffic generator (IXIA) was connected to 2 physical ports that are in turn connected to 2 virtio ports through a linux bridge, VM
  (running linux) doing routing to forward packets between the 2 virtio ports.
  When traffic reaches high pps rates of small packets,

  Actual results:
  - VM stop transmitting packets

  Expected results:
  - VM should never stop transmitting packets

  Additional info:
  We do propose a fix at:
    http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg00652.html

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1556306/+subscriptions

Re: [Qemu-devel] [Bug 1556306] Re: vhost-user: qemu stops processing packets under high load of traffic

[Michael S. Tsirkin]

On Fri, Mar 11, 2016 at 10:51:33PM -0000, Vincent JARDIN wrote:
> for tracking,
>   http://git.qemu.org/?p=qemu.git;a=patch;h=5669655aafdb88a8797c74a989dd0c0ebb1349fa
> 
> -- 
> You received this bug notification because you are a member of qemu-
> devel-ml, which is subscribed to QEMU.
> https://bugs.launchpad.net/bugs/1556306
> 
> Title:
>    vhost-user: qemu stops processing packets under high load of traffic
> 
> Status in QEMU:
>   New

I presume you'll also close this bu at some point?
It's fixed in upstream QEMU.

> Bug description:
>   Description of problem:
>   - qemu socket becomes full, causing qemu to send incomplete
>   SET_VRING_CALL messages to vhost-user backend (without proper fd set in
>   ancillary data).
>   - after some time, some interrupts are lost, causing the VM to stop
>   transmitting packets.
> 
>   How reproducible:
>   Run a stress tests of a vhost-user interface using an UDP
>   traffic generator. Traffic generator (IXIA) was connected to 2 physical ports that are in turn connected to 2 virtio ports through a linux bridge, VM
>   (running linux) doing routing to forward packets between the 2 virtio ports.
>   When traffic reaches high pps rates of small packets,
> 
>   Actual results:
>   - VM stop transmitting packets
> 
>   Expected results:
>   - VM should never stop transmitting packets
> 
>   Additional info:
>   We do propose a fix at:
>     http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg00652.html
> 
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1556306/+subscriptions

[Qemu-devel] [Bug 1556306] Re: vhost-user: qemu stops processing packets under high load of traffic

[Vincent JARDIN]

Correct, it is fixed in Qemu upstream. Just need to get it used into my
ubuntu.

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1556306

Title:
   vhost-user: qemu stops processing packets under high load of traffic

Status in QEMU:
  New

Bug description:
  Description of problem:
  - qemu socket becomes full, causing qemu to send incomplete
  SET_VRING_CALL messages to vhost-user backend (without proper fd set in
  ancillary data).
  - after some time, some interrupts are lost, causing the VM to stop
  transmitting packets.

  How reproducible:
  Run a stress tests of a vhost-user interface using an UDP
  traffic generator. Traffic generator (IXIA) was connected to 2 physical ports that are in turn connected to 2 virtio ports through a linux bridge, VM
  (running linux) doing routing to forward packets between the 2 virtio ports.
  When traffic reaches high pps rates of small packets,

  Actual results:
  - VM stop transmitting packets

  Expected results:
  - VM should never stop transmitting packets

  Additional info:
  We do propose a fix at:
    http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg00652.html

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1556306/+subscriptions

[Qemu-devel] [Bug 1556306] Re: vhost-user: qemu stops processing packets under high load of traffic

[Vincent JARDIN]

Let's close it. Sorry, it should  be opened into:
  https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1556306

Title:
   vhost-user: qemu stops processing packets under high load of traffic

Status in QEMU:
  New

Bug description:
  Description of problem:
  - qemu socket becomes full, causing qemu to send incomplete
  SET_VRING_CALL messages to vhost-user backend (without proper fd set in
  ancillary data).
  - after some time, some interrupts are lost, causing the VM to stop
  transmitting packets.

  How reproducible:
  Run a stress tests of a vhost-user interface using an UDP
  traffic generator. Traffic generator (IXIA) was connected to 2 physical ports that are in turn connected to 2 virtio ports through a linux bridge, VM
  (running linux) doing routing to forward packets between the 2 virtio ports.
  When traffic reaches high pps rates of small packets,

  Actual results:
  - VM stop transmitting packets

  Expected results:
  - VM should never stop transmitting packets

  Additional info:
  We do propose a fix at:
    http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg00652.html

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1556306/+subscriptions

[Qemu-devel] [Bug 1556306] Re: vhost-user: qemu stops processing packets under high load of traffic

[cargonza]

you can also add the project 'qemu-kvm' on the bug in order to get it
into the ubuntu qemu-kvm bug list.

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1556306

Title:
   vhost-user: qemu stops processing packets under high load of traffic

Status in QEMU:
  New

Bug description:
  Description of problem:
  - qemu socket becomes full, causing qemu to send incomplete
  SET_VRING_CALL messages to vhost-user backend (without proper fd set in
  ancillary data).
  - after some time, some interrupts are lost, causing the VM to stop
  transmitting packets.

  How reproducible:
  Run a stress tests of a vhost-user interface using an UDP
  traffic generator. Traffic generator (IXIA) was connected to 2 physical ports that are in turn connected to 2 virtio ports through a linux bridge, VM
  (running linux) doing routing to forward packets between the 2 virtio ports.
  When traffic reaches high pps rates of small packets,

  Actual results:
  - VM stop transmitting packets

  Expected results:
  - VM should never stop transmitting packets

  Additional info:
  We do propose a fix at:
    http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg00652.html

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1556306/+subscriptions

[Qemu-devel] [Bug 1556306] Re: vhost-user: qemu stops processing packets under high load of traffic

[cargonza]

apologize but I was corrected that for qemu issues. The bug should be in
the following:

Distribution: ubuntu
package: qemu  <--instead of project.

I will correct this in the bug.

** Project changed: qemu => qemu (Ubuntu)

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1556306

Title:
   vhost-user: qemu stops processing packets under high load of traffic

Status in qemu package in Ubuntu:
  New

Bug description:
  Description of problem:
  - qemu socket becomes full, causing qemu to send incomplete
  SET_VRING_CALL messages to vhost-user backend (without proper fd set in
  ancillary data).
  - after some time, some interrupts are lost, causing the VM to stop
  transmitting packets.

  How reproducible:
  Run a stress tests of a vhost-user interface using an UDP
  traffic generator. Traffic generator (IXIA) was connected to 2 physical ports that are in turn connected to 2 virtio ports through a linux bridge, VM
  (running linux) doing routing to forward packets between the 2 virtio ports.
  When traffic reaches high pps rates of small packets,

  Actual results:
  - VM stop transmitting packets

  Expected results:
  - VM should never stop transmitting packets

  Additional info:
  We do propose a fix at:
    http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg00652.html

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1556306/+subscriptions