error::pass5(7stap) [centos man page]

ERROR::PASS5(7stap)													       ERROR::PASS5(7stap)

NAME

       error::pass5 - systemtap pass-5 errors

DESCRIPTION

       Errors that occur during pass 5 (execution) can have a variety of causes.

       exceptional events during script execution
	      The  systemtap  translator  and runtime include numerous error checks that aim to protect the systems and the users from mistakes or
	      transient conditions.  The script may deliberately call the error() tapset function to signal a problem.	 Some  memory  needed  for
	      accessing  $context  variables  may  be temporarily unavailable.	Consider using the try/catch construct to wrap script fragments in
	      exception-handling code.	Consider using the stap --suppress-handler-errors or stap --skip-badvars option.

       resource exhaustion
	      One of several types of space or time resource limits may be exceeded by the script, including system overload, too many	tuples	to
	      be  stored  in  an  array, etc.  Some of the error messages identify the constraint by macro name, which may be individually raised.
	      Consider using the stap --suppress-handler-errors option.  Extend or disable resource limits using the stap -DLIMIT=NNNN option.

       remote execution server problems
	      If you use the stap --remote option to direct a systemtap script to be executed somewhere else, ensure that an SSH connection may be
	      made to the remote host, and that it has the current systemtap runtime installed & available.

       installation/permission problems
	      It  is possible that your installation of systemtap was not correctly installed.	For example, the /usr/bin/staprun program may lack
	      the necessary setuid permissions, or your invoking userid might not have sufficient privileges (root, or stapusr and  related  group
	      memberships).  Environment variables may interfere with locating /usr/libexec/.../stapio.

       errors from target program
	      The program invoked by the stap -c CMD option may exit with a non-zero code.

       uncaught exceptions in the target program
	      When  using --runtime=dyninst you may encounter an issue where the target program aborts with a message like "terminate called after
	      throwing an instance of 'foo_exception'".  This is unfortunately a limitation of Dyninst, which sometimes prevents  exceptions  from
	      properly unwinding through instrumented code.

GATHERING MORE INFORMATION

       Increasing the verbosity of pass-5 with an option such as --vp 00001 can help pinpoint the problem.

SEE ALSO

       stap(1),
       http://sourceware.org/systemtap/wiki/TipExhaustedResourceErrors,
       error::fault(7stap),
       error::reporting(7stap)

															       ERROR::PASS5(7stap)

Check Out this Related Man Page

STAP-MERGE(1)						      General Commands Manual						     STAP-MERGE(1)

NAME

       stap-merge - systemtap per-cpu binary merger

SYNOPSIS

       stap-merge [ OPTIONS ] [ INPUT FILENAMES ]

DESCRIPTION

       The stap-merge executable applies when the -b option has been used while running a stap script.	The -b option will generate files per-cpu,
       based on the timestamp field. Then stap-merge will merge and sort through the per-cpu files based on the timestamp field.

OPTIONS

       The systemtap merge executable supports the following options.

       -v     Verbose mode, displays three extra fields per set of collected data.

	      [cpunumber,sequencenumberofdata,thelengthofthedataset]

       -o OUTPUT_FILENAME

	      Specify the name of the file you would like the output to be redirected into.  If this option is not specified than the output  will
	      be pushed to standard out.

EXAMPLES

	      $ stap -v -b -e 'probe syscall.open { printf("%s(%d) open
",
	      execname(), pid()) }'

       This should result in several stpd_cpu files (each labled with a number representing which cpu the file was produced from).

	      $ stap-merge -v stpd_cpu0 stpd_cpu1

       Running the stap-merge program in the same directory as the stap script earlier in the example, will produce an ordered sequence of packets
       with the three part label for each set of data.	This result will be pushed through the standard output.  An output file  could	have  been
       specified using the "-o" option.

FILES

       Important files and their corresponding paths can be located in the
	      stappaths(7) manual page.

SEE ALSO

       stapprobes(3stap),
       stappaths(7),
       staprun(8),
       stapvars(3stap),
       stapex(3stap),
       stap-server(8),
       gdb(1)

BUGS

       Use the Bugzilla link of the project web page or our mailing list.  http://sourceware.org/systemtap/,<systemtap@sourceware.org>.

																     STAP-MERGE(1)

Linux and UNIX Man Pages

error::pass5(7stap) [centos man page]

Check Out this Related Man Page