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Full Discussion: Truss output
Top Forums UNIX for Advanced & Expert Users Truss output Post 302920231 by achenle on Wednesday 8th of October 2014 09:28:21 AM
Old 10-08-2014
What's your OS? Solaris?

Truss only captures system calls the process makes. If the code that is looping doesn't make any system calls, it won't produce any truss output.
 

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syscallbypid.d(1m)						   USER COMMANDS						syscallbypid.d(1m)

NAME
syscallbypid.d - syscalls by process ID. Uses DTrace. SYNOPSIS
syscallbypid.d DESCRIPTION
This reports the number of each type of system call made by PID. This is useful to identify which process is causing the most system calls. This is based on a script from DExplorer. Since this uses DTrace, only users with root privileges can run this command. EXAMPLES
This samples until Ctrl-C is hit. # syscallbypid.d FIELDS
PID process ID CMD process name SYSCALL system call name COUNT number of system calls made in this sample 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
syscallbypid.d will sample until Ctrl-C is hit. AUTHOR
Brendan Gregg [Sydney, Australia] SEE ALSO
procsystime(1M), dtrace(1M), truss(1) version 1.00 Jun 28, 2005 syscallbypid.d(1m)
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