2 .\" Copyright (c) 2003,2004 The DragonFly Project. All rights reserved.
4 .\" This code is derived from software contributed to The DragonFly Project
5 .\" by Matthew Dillon <dillon@backplane.com>
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34 .\" $DragonFly: src/usr.bin/pctrack/pctrack.8,v 1.4 2006/07/22 18:49:25 swildner Exp $
41 .Nd print kernel system/interrupt PC sampling history
52 record the program counter (PC) of
53 the code interrupted by the statistics clock interrupt.
54 This information can be dumped with the
58 The following options are available:
59 .Bl -tag -width ".Fl N Ar execfile"
61 Specify which CPU to dump. If not specified, all CPUs will be dumped.
63 If a single CPU and either
67 is specified, this option will use the repeat interval to detect changes
68 and dump them as they occur.
70 Dump the interrupt tracking buffer.
72 Dump the kernel tracking buffer.
77 is specified, both tracking buffers will be dumped.
80 normally tries to translate the PC into symbols. This option forces hex
81 values to be displayed instead.
83 The kernel image to resolve symbols from.
84 The default is the value returned via
87 The core file or memory image to read from.
91 .\".Sh OPERATIONAL NOTES
95 utility first appeared in
101 utility was originally implemented by