tnfxtract - extract kernel probes output into a trace file
tnfxtract [ -d dumpfile -n namelist] tnf_file
The tnfxtract utility collects kernel trace output from an
in-core buffer in the Solaris kernel, or from the memory
image of a crashed system, and generates a binary TNF trace
file like those produced directly by user programs being
Either both or neither of the -d and -n options must be
specified. If neither is specified, trace output is
extracted from the running kernel. If both are specified,
the -d argument names the file containing the (crashed) sys-
tem memory image, and the -n argument names the file con-
taining the symbol table for the system memory image.
The TNF trace file tnf_file produced is exactly the same
size as the in-core buffer; it is essentially a snapshot of
that buffer. It is legal to run tnfxtract while kernel
tracing is active, i.e., while the in-core buffer is being
written. tnfxtract insures that the output file it generates
is low-level consistent, i.e., that only whole probes are
written out, and that internal data structures in the buffer
are not corrupted because the buffer is being concurrently
The TNF trace file generated is suitable as input to
tnfdump(1), which will generate an ASCII file.
The following options are supported:
Use dumpfile as the system memory image, instead of
the running kernel. The dumpfile is normally the path
name of a file generated by the savecore utility.
Use namelist as the file containing the symbol table
information for the given dumpfile.
The following operand is supported:
output file generated by tnfxtract based on kernel
trace output from an in-core buffer in the Solaris
Example 1: Extracting probes from a running kernel
Extract probes from the running kernel into ktrace.out:
example% tnfxtract ktrace.out
Example 2: Extracting probes from a kernel crash dump
Extract probes from a kernel crash dump into ktrace.out:
example% tnfxtract -d /var/crash/`uname -n`/vmcore.0 \
-n /var/crash/`uname -n`/unix.0 ktrace.out
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWtnfc (32-bit) |
| | SUNWtnfcx (64-bit) |
prex(1), tnfdump(1), savecore(1M), tnf_kernel_probes(4),
Man(1) output converted with