Originally posted by: tech100

What does this process do that it always is on top and all the time consumes CPU time?

AIX 5300-12-02-1036

DATA  TEXT  PAGE               PGFAULTS USER        PID    PPID PRI NI   RES   RES SPACE    TIME CPU%  I/O  OTH COMMAND root    1073376  184478  24 41   131    31   131 50031:12 28.1    0    0 xmtopas

$ 

while 

true;

do ps -ef|grep xmtopa[s];sleep 1;done root 1073376  184478  69   Dec 20      - 50042:29 xmtopas -p3 root 1073376  184478  74   Dec 20      - 50042:30 xmtopas -p3 root 1073376  184478  80   Dec 20      - 50042:31 xmtopas -p3 root 1073376  184478  86   Dec 20      - 50042:32 xmtopas -p3 root 1073376  184478  91   Dec 20      - 50042:33 xmtopas -p3 root 1073376  184478  96   Dec 20      - 50042:34 xmtopas -p3 root 1073376  184478 102   Dec 20      - 50042:35 xmtopas -p3 root 1073376  184478 107   Dec 20      - 50042:36 xmtopas -p3 root 1073376  184478 114   Dec 20      - 50042:37 xmtopas -p3 root 1073376  184478 120   Dec 20      - 50042:38 xmtopas -p3 root 1073376  184478 120   Dec 20      - 50042:39 xmtopas -p3 root 1073376  184478 120   Dec 20      - 50042:40 xmtopas -p3 root 1073376  184478 120   Dec 20      - 50042:41 xmtopas -p3 root 1073376  184478 120   Dec 20      - 50042:42 xmtopas -p3 root 1073376  184478 120   Dec 20      - 50042:43 xmtopas -p3

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Originally posted by: tech100

noone has idea? can it be killed/stopped for permanent?

btw. how hypervisor knows when LPAR needs more processing unita (in shared CPU pool configuration)? is there any AIX/system proces which needs to run to get shared CPU properly working? or Power Hypervisor doesn't need any such proceses in the system to know when to give more processing unit to the LPAR (when more power it is needed)?
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Originally posted by: SystemAdmin

stay cool.
how high is CPU utilization in physical units? (not percent of whatever)
vmstat 1, pc column

you might by mistake confuse "percentage of physical consumed" with "percentage of whatever"
that's a frequent error with shared cpu lpars (see: http://www.ibm.com/developerworks/java/jdk/power7/index.html )

and: xmtopas has a nice manual

best regards
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Originally posted by: SystemAdmin

oops, link should read:
http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14571231
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Originally posted by: SystemAdmin

We do have the same issue on 5.3 Tl12 sp5 version.

So we had disabled xmtopas permanently from starting.

Now we see 10% less consumption in in CPU usage after disabling the xmtopas process.
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