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Operating Systems AIX AIX_timeout_thread using lot of cpu time Post 302844901 by aixvinnie on Tuesday 20th of August 2013 08:49:27 AM
Old 08-20-2013
AIX_timeout_thread using lot of cpu time

Hi,

i am seeing some strange things on a lpar which we have at this moment.
With nmon i see a process aix_timeout_thread which is using lots of cpu (70-80%, all cpu which is "free" is used). This is a kernel process (for as far i can find out) but i am wondering what is causing this to happen and what this process is used for. We have a second partition (setup as a load balanced environment) with the same setup, but no problems with aix_timeout_thread can be seen on that one.
Partition is running aix 5.3, edge 7.0.0.24 and has been moved to P770 (from P595) half a year ago.

In the morning we are going to stop and start the application to see if the process will still be active.

Anyone has an idea or have seen a similar problem?

Regards,

vincent
 

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MAC_PARTITION(4)					   BSD Kernel Interfaces Manual 					  MAC_PARTITION(4)

NAME
mac_partition -- process partition policy SYNOPSIS
To compile the process partition policy into your kernel, place the following lines in your kernel configuration file: options MAC options MAC_PARTITION Alternately, to load the process partition module at boot time, place the following line in your kernel configuration file: options MAC and in loader.conf(5): mac_partition_load="YES" DESCRIPTION
The mac_partition policy module implements a process partition policy, which allows administrators to place running processes into ``partitions'', based on their numeric process partition (specified in the process's MAC label). Processes with a specified partition can only see processes that are in the same partition. If no partition is specified for a process, it can see all other processes in the system (subject to other MAC policy restrictions not defined in this man page). No provisions for placing processes into multiple partitions are available. Label Format Partition labels take on the following format: partition/value Where value can be any integer value or ``none''. For example: partition/1 partition/20 partition/none SEE ALSO
mac(4), mac_biba(4), mac_bsdextended(4), mac_ifoff(4), mac_lomac(4), mac_mls(4), mac_none(4), mac_portacl(4), mac_seeotheruids(4), mac_test(4), maclabel(7), mac(9) HISTORY
The mac_partition policy module first appeared in FreeBSD 5.0 and was developed by the TrustedBSD Project. AUTHORS
This software was contributed to the FreeBSD Project by Network Associates Labs, the Security Research Division of Network Associates Inc. under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the DARPA CHATS research program. BUGS
See mac(9) concerning appropriateness for production use. The TrustedBSD MAC Framework is considered experimental in FreeBSD. While the MAC Framework design is intended to support the containment of the root user, not all attack channels are currently protected by entry point checks. As such, MAC Framework policies should not be relied on, in isolation, to protect against a malicious privileged user. BSD
December 9, 2002 BSD
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