Difference between revisions of "Truss"
From pressy's brainbackup
(Created page with "=== Never forget the mega truss command === Sometimes a very useful output if you really want to see everything: <pre> # truss -elfda -rall -wall -vall -xall [-o output.txt ] -...") |
|||
| Line 5: | Line 5: | ||
<pre> | <pre> | ||
# truss -elfda -rall -wall -vall -xall [-o output.txt ] -p <pid> | # truss -elfda -rall -wall -vall -xall [-o output.txt ] -p <pid> | ||
| + | </pre> | ||
| + | |||
| + | But; did you know that debug tool set: | ||
| + | |||
| + | <pre> | ||
| + | root@solaris~# LD_DEBUG=help /usr/bin/true | ||
| + | debug: | ||
| + | debug: Solaris ELF Utilities: 11.4-1.3170 | ||
| + | debug: | ||
| + | debug: The runtime linker and link-editor support a shared debugging | ||
| + | debug: facility. Options are selected via a comma separated list of tokens, | ||
| + | debug: each of which specifies a display option or a category for which | ||
| + | debug: information is desired. Many tokens apply to both linker components, | ||
| + | debug: while some are specific to one or the other. Diagnostics are printed, | ||
| + | debug: one per line, with a standard prefix prepended to each one. Output | ||
| + | debug: for the help token, used by itself, is sent to stdout. Use of | ||
| + | debug: any other tokens causes diagnostic output to be sent to stderr | ||
| + | debug: unless otherwise redirected. | ||
| + | debug: | ||
| + | [...] ~snip | ||
| + | </pre> | ||
| + | Example, prepend time stamps entering ld or ld.so.1 and elapsed time: | ||
| + | <pre> | ||
| + | root@solaris~# LD_DEBUG=dtime,ttime,all <cmd> | ||
</pre> | </pre> | ||
Revision as of 13:14, 13 July 2020
Never forget the mega truss command
Sometimes a very useful output if you really want to see everything:
# truss -elfda -rall -wall -vall -xall [-o output.txt ] -p <pid>
But; did you know that debug tool set:
root@solaris~# LD_DEBUG=help /usr/bin/true debug: debug: Solaris ELF Utilities: 11.4-1.3170 debug: debug: The runtime linker and link-editor support a shared debugging debug: facility. Options are selected via a comma separated list of tokens, debug: each of which specifies a display option or a category for which debug: information is desired. Many tokens apply to both linker components, debug: while some are specific to one or the other. Diagnostics are printed, debug: one per line, with a standard prefix prepended to each one. Output debug: for the help token, used by itself, is sent to stdout. Use of debug: any other tokens causes diagnostic output to be sent to stderr debug: unless otherwise redirected. debug: [...] ~snip
Example, prepend time stamps entering ld or ld.so.1 and elapsed time:
root@solaris~# LD_DEBUG=dtime,ttime,all <cmd>