29614b3788
added sysctl debug.witness.graphs and returns all the graphs involving Giant lock creating an appropriate script in DOT format which can be plotted immediately. Submitted by: Michele Dallachiesa <michele dot dallachiesa at poste dot it>
25 lines
427 B
Bash
25 lines
427 B
Bash
#!/bin/sh
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################################################################################
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#
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# lockgraphs.sh by Michele Dallachiesa -- 2008-05-07 -- v0.1
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#
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# $FreeBSD$
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#
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################################################################################
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sysctl debug.witness.graphs | awk '
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BEGIN {
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print "digraph lockgraphs {"
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}
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NR > 1 && $0 ~ /"Giant"/ {
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gsub(","," -> ");
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print $0 ";"
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}
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END {
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print "}"
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}'
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#eof
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