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| author | ssouhlal <ssouhlal@FreeBSD.org> | 2005-01-25 14:17:38 +0000 |
|---|---|---|
| committer | ssouhlal <ssouhlal@FreeBSD.org> | 2005-01-25 14:17:38 +0000 |
| commit | 83dad33e1707407845c38c34077c9f4b82786110 (patch) | |
| tree | 42e410228d152c73b87ba92414c07e347af04637 /share/man/man4/ktr.4 | |
| parent | f078f804f9b05bc485949ffcabe112d062831b11 (diff) | |
| download | FreeBSD-src-83dad33e1707407845c38c34077c9f4b82786110.zip FreeBSD-src-83dad33e1707407845c38c34077c9f4b82786110.tar.gz | |
Mention that 'options ALQ' is required when using KTR_ALQ.
Approved by: simon, trhodes, grehan (mentor)
Diffstat (limited to 'share/man/man4/ktr.4')
| -rw-r--r-- | share/man/man4/ktr.4 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/share/man/man4/ktr.4 b/share/man/man4/ktr.4 index 3b381e9..6f75ccd 100644 --- a/share/man/man4/ktr.4 +++ b/share/man/man4/ktr.4 @@ -32,6 +32,7 @@ .Nd kernel tracing facility .Sh SYNOPSIS .Cd options KTR +.Cd options ALQ .Cd options KTR_ALQ .Cd options KTR_COMPILE=(KTR_LOCK|KTR_INTR|KTR_PROC) .Cd options KTR_CPUMASK=0x3 @@ -145,6 +146,9 @@ option can be used to log entries to disk for post analysis using the .Xr ktrdump 8 utility. +This option depends on the +.Dv ALQ +option. Due to the potentially high volume of trace messages the trace mask should be selected carefully. This feature is configured through a group of sysctls. @@ -187,6 +191,7 @@ records the number of entries that have currently been written to disk. .El .Sh SEE ALSO .Xr ktrdump 8 , +.Xr alq 9 , .Xr ktr 9 .Sh HISTORY The KTR kernel tracing facility first appeared in |
