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 OUTPUTFILENAME
Specify the name of the file you would like the output to be
redirected into. If this option is not specified than the out‐
put will be pushed to standard out.
EXAMPLES
$ stap -v -b -e 'probe syscall.open { printf("%s(%d) open\n",
execname(), pid()) }'
This should result in several stpdcpu files (each labled with a number
representing which cpu the file was produced from).
$ stap-merge -v stpdcpu0 stpdcpu1
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/,.
STAP-MERGE(1)