projects / unix-history / blame
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1 | .\" Copyright (c) 1983 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 01a3eda7 | 3 | .\" |
| 68a62424 | 4 | .\" %sccs.include.redist.man% |
| c82fa61b | 5 | .\" |
| 68a62424 | 6 | .\" @(#)kgmon.8 6.3 (Berkeley) %G% |
| 01a3eda7 | 7 | .\" |
| 43598d14 | 8 | .TH KGMON 8 "" |
| 01a3eda7 KM |
9 | .UC 5 |
| 10 | .SH NAME | |
| 11 | kgmon \- generate a dump of the operating system's profile buffers | |
| 12 | .SH SYNOPSIS | |
| 68a62424 | 13 | .B kgmon |
| 01a3eda7 KM |
14 | [ |
| 15 | .B \-b | |
| 16 | ] [ | |
| 17 | .B \-h | |
| 18 | ] [ | |
| 19 | .B \-r | |
| 20 | ] [ | |
| 21 | .B \-p | |
| 22 | ] [ system ] [ memory ] | |
| 23 | .SH DESCRIPTION | |
| 24 | .I Kgmon | |
| 25 | is a tool used when profiling the operating system. | |
| 26 | When no arguments are supplied, | |
| 27 | .I kgmon | |
| 28 | indicates the state of operating system profiling as running, | |
| 29 | off, or not configured. | |
| 30 | (see | |
| 31 | .IR config (8)) | |
| 32 | If the | |
| 33 | .B \-p | |
| 34 | flag is specified, | |
| 35 | .I kgmon | |
| 36 | extracts profile data from the operating system and produces a | |
| 37 | .I gmon.out | |
| 38 | file suitable for later analysis by | |
| 39 | .IR gprof (1). | |
| 40 | .PP | |
| 41 | The following options may be specified: | |
| 42 | .TP | |
| 43 | .B \-b | |
| 44 | Resume the collection of profile data. | |
| 45 | .TP | |
| 46 | .B \-h | |
| 47 | Stop the collection of profile data. | |
| 48 | .TP | |
| 49 | .B \-p | |
| 50 | Dump the contents of the profile buffers into a | |
| 51 | .I gmon.out | |
| 52 | file. | |
| 53 | .TP | |
| 54 | .B \-r | |
| 55 | Reset all the profile buffers. | |
| 56 | If the | |
| 57 | .B \-p | |
| 58 | flag is also specified, the | |
| 59 | .I gmon.out | |
| 60 | file is generated before the buffers are reset. | |
| 61 | .PP | |
| 62 | If neither | |
| 63 | .B \-b | |
| 64 | nor | |
| 65 | .B \-h | |
| 66 | is specified, the state of profiling collection remains unchanged. | |
| 67 | For example, if the | |
| 68 | .B \-p | |
| 69 | flag is specified and profile data is being collected, | |
| 70 | profiling will be momentarily suspended, | |
| 71 | the operating system profile buffers will be dumped, | |
| 72 | and profiling will be immediately resumed. | |
| 73 | .SH FILES | |
| 74 | /vmunix \- the default system | |
| 75 | .br | |
| 76 | /dev/kmem \- the default memory | |
| 77 | .SH "SEE ALSO" | |
| 78 | gprof(1), | |
| 79 | config(8) | |
| 80 | .SH DIAGNOSTICS | |
| 81 | Users with only read permission on /dev/kmem cannot change the state | |
| 82 | of profiling collection. | |
| 83 | They can get a | |
| 84 | .I gmon.out | |
| 85 | file with the warning that the data may be | |
| 86 | inconsistent if profiling is in progress. |