iofile.d(1m) USER COMMANDS iofile.d(1m)NAME
iofile.d - I/O wait time by file and process. Uses DTrace.
SYNOPSIS
iofile.d
DESCRIPTION
This prints the total I/O wait times for each filename by process. This can help determine why an application is performing poorly by
identifying which file they are waiting on, and the total times. Both disk and NFS I/O are measured.
Since this uses DTrace, only users with root privileges can run this command.
EXAMPLES
Sample until Ctrl-C is hit then print report,
# iofile.d
FIELDS
PID process ID
CMD process name
TIME total wait time for disk events, us
FILE file pathname
BASED ON
/usr/demo/dtrace/iocpu.d
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
iofile.d will sample until Ctrl-C is hit.
SEE ALSO iosnoop(1M), dtrace(1M)version 0.70 Jul 24, 2005 iofile.d(1m)
Check Out this Related Man Page
sigdist.d(1m) USER COMMANDS sigdist.d(1m)NAME
sigdist.d - signal distribution by process. Uses DTrace.
SYNOPSIS
sigdist.d
DESCRIPTION
This is a simple DTrace script that prints the number of signals recieved by process and signal number. This script is also available as
/usr/demo/dtrace/sig.d, where it originates.
Since this uses DTrace, only users with root privileges can run this command.
EXAMPLES
This samples until Ctrl-C is hit.
# sigdist.d
FIELDS
SENDER process name of sender
RECIPIENT
process name of target
SIG signal number, see signal(3head)
COUNT number of signals sent
BASED ON
/usr/demo/dtrace/sig.d
DOCUMENTATION
DTrace Guide "proc Provider" chapter (docs.sun.com)
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
sigdist.d will sample until Ctrl-C is hit.
SEE ALSO kill.d(1M), dtrace(1M)version 1.00 Jun 09, 2005 sigdist.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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