systemtap, anyone? 2007-08-01 - By Cristian Veronesi
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Has anyone tried to use systemtap on SUSE SLES10? I was able to run a
simple "hello world" script but I always get errors when trying to
access kernel functions. For example, this script:
<<<
global reads
probe begin {
printf("probe beginning\n")
}
probe syscall.read {
reads [execname()] <<< count
}
probe end {
foreach (prog_name in reads) {
printf("Name: %s, # Reads: %d, Total Bytes: %d, Avg: %d\n",
prog_name, @(protected)(reads[prog_name]),
@(protected)(reads[prog_name]), @(protected)(reads[prog_name]))
}
}
>>>
Gives the following error:
semantic error: libdwfl failure (dwfl_linux_kernel_report_offline): No
such file or directory while resolving probe point
kernel.function("sys_read")
semantic error: no match for probe point while resolving probe point
syscall.read
Pass 2: analysis failed. Try again with more '-v' (verbose) options.
Am I missing some package?
Thank you. Kind regards,
--
Cristian Veronesi - C.R.P.A. S.p.A. - Reggio Emilia, Italy
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