This bug was fixed in the package linux - 3.5.0-43.66
---
linux (3.5.0-43.66) quantal; urgency=low
[ Brad Figg ]
* Release Tracking Bug
- LP: #1242895
[ Timo Aaltonen ]
* SAUCE: ubuntu/i915: silence unclaimed register poking debug messages
- LP: #1138787
[ Upstre
This bug was fixed in the package linux - 3.8.0-33.48
---
linux (3.8.0-33.48) raring; urgency=low
[ Brad Figg ]
* Release Tracking Bug
- LP: #1242849
[ Maximiliano Curia ]
* SAUCE: (no-up) Only let characters through when there are active
readers.
- LP: #1208740
Precise 3.8.0-33-generic lts-raring large VM:
#ns ms
1 9
1001 29
2001 34
3001 103
4001 97
5001 212
6001 198
7001 362
8001 333
9001 545
10001 501
** Tags removed: verification-needed-raring
** Tags added: verification-done-raring
--
Yo
Precise 3.2.0-52-virtual large VM:
#ns ms
1 103
1001 138
2001 219
3001 374
4001 606
5001 847
6001 921
7001 1438
8001 1734
9001 2099
10001 2441
Precise 3.5.0-43-generic lts-quantal large VM:
#ns ms
1 23
1001 45
2001
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-
raring' to 'verification-done-raring'.
If verification is not done by 5 working days from t
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-
quantal' to 'verification-done-quantal'.
If verification is not done by 5 working days from
** Changed in: linux (Ubuntu Precise)
Status: In Progress => Won't Fix
** Changed in: linux (Ubuntu Precise)
Assignee: Chris J Arges (arges) => (unassigned)
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** Changed in: linux (Ubuntu Quantal)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Raring)
Status: In Progress => Fix Committed
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** Description changed:
SRU Justification:
Impact: When creating thousands of network namespaces the delay in
executing commands increases exponentially in kernels before 84d17192.
Fix: In 84d17192 in the upstream kernel, locking code in fs/namespace.c
is greatly improved resulting
** Description changed:
+ SRU Justification:
+
+ Impact: When creating thousands of network namespaces the delay in
+ executing commands increases exponentially in kernels before 84d17192.
+
+ Fix: In 84d17192 in the upstream kernel, locking code in fs/namespace.c
+ is greatly improved resulting
On 3.8 I have been able to solve the problem with two patches:
84d17192d2afd52aeba88c71ae4959a015f56a38
57eccb830f1cc93d4b506ba306d8dfa685e0c88f
Doing more extensive testing now.
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This script will test performance of 'ip netns exec /bin/true" when
increasing namespaces by 1000.
** Attachment added: "test_ns.sh"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1226726/+attachment/3825692/+files/test_ns.sh
** Also affects: linux (Ubuntu Precise)
Importance: Undec
** Changed in: linux (Ubuntu Precise)
Importance: Medium => High
** Changed in: linux (Ubuntu Raring)
Importance: Medium => High
** Changed in: linux (Ubuntu Quantal)
Importance: Medium => High
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