Public bug reported:
Running the Phoronix Test Suite (http://www.phoronix-test-suite.com/)
universe-cli benchmark (cmdline: phoronix-test-suite run universe-cli)
causes a CPU soft lockup during the iozone test. Running the iozone
benchmark by itself does not seem to cause this issue. This did not
occur when running the same test suite on the same hardware
configuration with Ubuntu Server 8.04.01.
Software:
* Ubuntu Server 8.10 Alpha 5 (uname -a: Linux ibex-test 2.6.27-2-server #1 SMP
Thu Aug 28 17:58:24 UTC 2008 x86_64 GNU/Linux)
* Phoronix Test Suite 1.2.0
Hardware:
* Supermicro X7SBi Motherboard
* Intel Q6600 Processor
* 8GB Crucial memory
* Areca 1210 SATA Raid Controller
* (4) 750GB Seagate 7200.10 drives (in a single RAID 5 configuration with two
volumes; 300GB / EXT3; 1.9TB /home XFS -- the test was run on the XFS partition)
Here is the serial console output showing the first 4 soft lock messages; after
which they repeat infinitely as far as I can tell:
[ 5841.162480] BUG: soft lockup - CPU#2 stuck for 61s! [iozone:29413]
[ 5874.443727] BUG: soft lockup - CPU#3 stuck for 61s! [kstop3:29435]
[ 5874.449998] BUG: soft lockup - CPU#0 stuck for 61s! [kstop0:29432]
[ 5906.661227] BUG: soft lockup - CPU#1 stuck for 61s! [kstop1:29433]
Attached is a partial log of the test suite run.
** Affects: ubuntu
Importance: Undecided
Status: New
--
iozone causes soft lockup
https://bugs.launchpad.net/bugs/268215
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