runocc.d(1m) USER COMMANDS runocc.d(1m)NAME
runocc.d - run queue occupancy by CPU. Uses DTrace.
SYNOPSIS
runocc.d
DESCRIPTION
This prints the dispatcher run queue occupancy by CPU each second. A consistant run queue occupancy is a sign of CPU saturation.
The value is similar to that seen in "sar -q", however this is calculated in a more accurate manner - sampling at 1000 Hertz.
Since this uses DTrace, only users with root privileges can run this command.
EXAMPLES
Print %runocc by CPU every second,
# runocc.d
FIELDS
CPU cpu ID
%runocc
percent run queue occupancy, sampled at 1000 Hertz
SEE ALSO
Solaris Internals 2nd Ed, vol 2, CPU chapter
DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
bose descriptions explaining the output.
EXIT
runocc.d will sample until Ctrl-C is hit.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO dtrace(1M)version 0.50 Apr 23, 2006 runocc.d(1m)
Check Out this Related Man Page
syscallbysysc.d(1m) USER COMMANDS syscallbysysc.d(1m)NAME
syscallbysysc.d - syscalls by syscall. Uses DTrace.
SYNOPSIS
syscallbysysc.d
DESCRIPTION
syscallbysysc.d is a DTrace OneLiner to a report of the number of each type of system call made.
This is useful to identify which system call is the most common.
Docs/oneliners.txt and Docs/Examples/oneliners_examples.txt in the DTraceToolkit contain this as a oneliner that can be cut-n-paste to run.
Since this uses DTrace, only users with root privileges can run this command.
EXAMPLES
This samples until Ctrl-C is hit.
# syscallbysysc.d
FIELDS
first field
This is the system call type. Most have man pages in section 2.
second field
This is the count, the number of occurrances for this system call.
DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
bose descriptions explaining the output.
EXIT
syscallbysysc.d will sample until Ctrl-C is hit.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO procsystime(1M), dtrace(1M), truss(1)version 1.00 May 15, 2005 syscallbysysc.d(1m)
Manufacturer Links
General Information
Home Page: IBM United States
Documentation/Information: IBM System p - UNIX servers: Support and services
pSeries and AIX Information Center
Developerworks AIX Wiki: AIX Wiki
AIX for System Administrators
In-depth information from IBM:
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