Using DTrace to Analyze Your Webstack

3 More Discussions You Might Find Interesting

1. Solaris

Solaris x86 - Webstack 1.5 - Apache Stops reponding

Solaris 10x86 running multiple zones Webstack 1.5 loaded in the global and one zone is using the Apache webserver which it provides. Rest of zones working fine, no issues etc... The Apache web server however just stops responding. It is still running, but not processing requests. There...

2. Shell Programming and Scripting

DTRACE help required...

if dtrace -n 'syscall::open*:entry { printf("%i %s %s %s",uid,execname,cwd,copyinstr(arg0)); }' will show me all files that are opened as follows... 3 522 open:entry 0 init / /etc/inittab 3 522 open:entry 0 init /...

3. Solaris

PID Provider dtrace script

I'm just starting to mess about with dtrace on Solaris. How do I configure a probe in a PID provider dtrace script to trigger when the process being traced exits? I've tried pid$1:::exit where $1 is the PID but I get 'exit' is an invalid probe name

LEARN ABOUT OPENSOLARIS

systrace

systrace(7D)							      Devices							      systrace(7D)

NAME

       systrace - DTrace system call tracing provider

DESCRIPTION

       The  systrace driver implements the DTrace syscall dynamic tracing provider. The syscall provider performs dynamic instrumentation to offer
       probes that fire whenever a thread enters or returns from a kernel system call entry point.

       The systrace driver is not a public interface and you access the instrumentation offered by this provider  through  DTrace.  Refer  to  the
       Solaris	Dynamic  Tracing  Guide  for  a  description  of the public documented interfaces available for the DTrace facility and the probes
       offered by the syscall provider.

ATTRIBUTES

       See attributes(5) for a description of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWdtrp			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Private			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       dtrace(1M), attributes(5), dtrace(7D)

       Solaris Dynamic Tracing Guide

SunOS 5.11							    4 Sep 2003							      systrace(7D)

Solaris BigAdmin RSS