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Add info on the SYSCALL_STATS and SYSCALL_TIMES options

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dsl 2007-04-22 10:43:10 +00:00
parent e05c6c8d1e
commit 01dcedbe60
1 changed files with 16 additions and 1 deletions
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17
share/man/man4/options.4
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@ -1,4 +1,4 @@
.\" $NetBSD: options.4,v 1.348 2007/03/21 19:29:30 xtraeme Exp $
.\" $NetBSD: options.4,v 1.349 2007/04/22 10:43:10 dsl Exp $
.\"
.\" Copyright (c) 1996
.\" Perry E. Metzger. All rights reserved.
@ -1461,6 +1461,21 @@ See
for details.
.Em NOTE :
not available on all architectures.
.It Cd options SYSCALL_STATS
Count the number of times each system call number is called.
The values can be read through the sysctl interface and display using systat
.Xr systat 1 .
.Em NOTE :
not yet available on all architectures.
.It Cd options SYSCALL_TIMES
Count the time spent (using cpu_counter32()) in each system call.
.Em NOTE :
Using this option will also enable
.Em options SYSCALL_STATS
.It Cd options SYSCALL_TIMES_HASCOUNTER
Force use of cpu_counter32() even if cpu_hascounter() reports false.
Useful for systems where the cycle counter doen't run at a constant rate
(e.g. Soekris boxes).
.It Cd options XSERVER
Compiles in kernel support for
.Tn X11