| 2010-06-01 13:25:26 |
Dick Tump |
bug |
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added bug |
| 2010-06-02 23:51:31 |
Mathias Gug |
qemu-kvm (Ubuntu): importance |
Undecided |
Medium |
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| 2010-06-02 23:51:33 |
Mathias Gug |
qemu-kvm (Ubuntu): status |
New |
Incomplete |
|
| 2010-06-15 02:37:10 |
Dustin Kirkland |
qemu-kvm (Ubuntu): status |
Incomplete |
Triaged |
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| 2010-06-15 02:37:18 |
Dustin Kirkland |
qemu-kvm (Ubuntu): assignee |
|
Serge Hallyn (serge-hallyn) |
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| 2010-06-15 08:58:40 |
Chris Jones |
bug |
|
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added subscriber Chris Jones |
| 2010-06-15 16:19:16 |
Serge Hallyn |
description |
Binary package hint: qemu-kvm
Ubuntu release: 10.04 LTS
Package version: 0.12.3+noroms-0ubuntu9
There seems to be a huge memory leak in qemu/kvm 0.12.3. After a while, a virtual machine is using much more memory on the host system, than actually is in use on the guest system. A guest system with only 512 MB assigned, can even use multiple GB's of memory.
This bug is also discussed here:
http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2989366&group_id=180599
Would it be possible to fix this bug in Ubuntu? It makes KVM a bit useless currently, because running 2 GB of VM's can even cost 16 GB of memory. |
Binary package hint: qemu-kvm
Ubuntu release: 10.04 LTS
Package version: 0.12.3+noroms-0ubuntu9
There seems to be a huge memory leak in qemu/kvm 0.12.3. After a while, a virtual machine is using much more memory on the host system, than actually is in use on the guest system. A guest system with only 512 MB assigned, can even use multiple GB's of memory.
This bug is also discussed here:
http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2989366&group_id=180599
Would it be possible to fix this bug in Ubuntu? It makes KVM a bit useless currently, because running 2 GB of VM's can even cost 16 GB of memory.
============
Impact: A memory leak causes long-running (measured in only a few days)
kvm sessions to invoke the OOM killer. This makes many kvm or cloud
applications impossible.
The issue is addressed with upstream patch with commit-id
7eb58a6c556c3880e6712cbf6d24d681261c5095. A back-port of the
patch is attached, and can be seen in
https://code.edge.launchpad.net/~serge-hallyn/ubuntu/lucid/qemu-kvm/memleak-fix2/
To reproduce: simply start a kvm instance, ensure that aio is being
used, and let it run.
Regression potential: the patch simply ensured that already-allocated
memory is freed in an error path which otherwise lets that memory leak.
============
|
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| 2010-06-15 16:21:39 |
Serge Hallyn |
nominated for series |
|
Ubuntu Lucid |
|
| 2010-06-15 16:21:39 |
Serge Hallyn |
nominated for series |
|
Ubuntu Maverick |
|
| 2010-06-15 20:31:37 |
Dustin Kirkland |
bug task added |
|
qemu-kvm (Ubuntu Lucid) |
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| 2010-06-15 20:31:49 |
Dustin Kirkland |
bug task added |
|
qemu-kvm (Ubuntu Maverick) |
|
| 2010-06-15 20:32:13 |
Dustin Kirkland |
qemu-kvm (Ubuntu Lucid): status |
New |
Triaged |
|
| 2010-06-15 20:32:18 |
Dustin Kirkland |
qemu-kvm (Ubuntu Lucid): importance |
Undecided |
Medium |
|
| 2010-06-15 20:32:21 |
Dustin Kirkland |
qemu-kvm (Ubuntu Lucid): assignee |
|
Serge Hallyn (serge-hallyn) |
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| 2010-06-15 20:32:28 |
Dustin Kirkland |
qemu-kvm (Ubuntu Lucid): milestone |
|
lucid-updates |
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| 2010-06-15 20:35:23 |
Dustin Kirkland |
qemu-kvm (Ubuntu Maverick): status |
Triaged |
Fix Released |
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| 2010-06-15 20:44:46 |
Dustin Kirkland |
qemu-kvm (Ubuntu Lucid): status |
Triaged |
Fix Committed |
|
| 2010-06-17 16:20:58 |
Scott Kitterman |
bug |
|
|
added subscriber SRU Verification |
| 2010-06-17 16:21:04 |
Scott Kitterman |
tags |
|
verification-needed |
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| 2010-06-17 17:15:28 |
Launchpad Janitor |
branch linked |
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lp:ubuntu/lucid-proposed/qemu-kvm |
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| 2010-06-21 09:28:20 |
David Weber |
attachment added |
|
Patched kvm http://launchpadlibrarian.net/50674173/kvm_84%2Bdfsg-0ubuntu16%2B0.12.3%2Bnoroms%2B0ubuntu9.1_amd64.deb |
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| 2010-06-21 09:31:32 |
David Weber |
attachment added |
|
Patched qemu-kvm http://launchpadlibrarian.net/50674252/qemu-kvm_0.12.3%2Bnoroms-0ubuntu9.1_amd64.deb |
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| 2010-06-22 20:28:40 |
Serge Hallyn |
branch linked |
|
lp:~serge-hallyn/ubuntu/lucid/qemu-kvm/memleak-fix |
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| 2010-06-30 13:41:56 |
Serge Hallyn |
summary |
Memory leak |
Memory leak in qemu |
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| 2010-06-30 13:44:22 |
Serge Hallyn |
summary |
Memory leak in qemu |
iovec array memory leak |
|
| 2010-07-05 16:54:04 |
Martin Pitt |
tags |
verification-needed |
verification-done |
|
| 2010-07-07 15:22:34 |
Launchpad Janitor |
qemu-kvm (Ubuntu Lucid): status |
Fix Committed |
Fix Released |
|
