Bug#693942: linux-image-3.2.0-4-amd64: Kernel load too high
Package: linux-image-3.2.0-4-amd64
Severity: normal
Dear Maintainer,
the kernel load of the kernel listed above is too high - we're experiencing
load spikes of 20, 30 and more on a dual-core processor without an indication
of the cause. The CPU usage is low (less than 50% of each core utilized), and
the load jumps from like 2 to 20 in a fraction of a second. This happens on at
least two machines which run KVM. This is probably a load calculation bug only,
because the system is very responsive, even with that huge load.
I have no good recipe to reproduce this - it seems to be related to disk I/O,
but I'm not certain about that.
It sounds very much like issue #674153, as well as
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/985661 or
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/995284
I have no idea which useful information I could attach to this bug; again I
believe this is only a display issue (but which, in turn, breaks things like
system monitoring, and turns any triggers into a blazing storm of error
notifications at the NOC). Thus I also believe that this might be a showstopper
for the wheezy release.
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.1.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
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