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 MOJAVE

filebyproc.d

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

NAME

       filebyproc.d - snoop opens by process name. Uses DTrace.

SYNOPSIS

       filebyproc.d

DESCRIPTION

       filebyproc.d  is  a DTrace OneLiner to print file pathnames as they are opened, including the name of the process calling the open.  A line
       will be printed regardless of whether the open is actually successful or not.

       This is useful to learn which files applications are attempting to open, such as config files, database files, log files, etc.

       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 prints new process name and pathnames until Ctrl-C is hit.
	      # filebyproc.d

FIELDS

       CPU    The CPU that recieved the event

       ID     A DTrace probe ID for the event

       FUNCTION:NAME
	      The DTrace probe name for the event

       remaining fields
	      The first is the name of the process, the second is the file pathname.

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

       filebyproc.d will run forever until Ctrl-C is hit.

AUTHOR

       Brendan Gregg [Sydney, Australia]

SEE ALSO

       opensnoop(1M), dtrace(1M), truss(1)

version 1.00							   May 15, 2005 						  filebyproc.d(1m)

Solaris BigAdmin RSS