From 2d0db798e349161b042a73b87a2d1b4eae417c46 Mon Sep 17 00:00:00 2001 From: Sascha Wildner Date: Sat, 16 Jul 2011 15:32:18 +0200 Subject: [PATCH] ktr.4: Document the debug.ktr.resynchronize sysctl. --- share/man/man4/ktr.4 | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/share/man/man4/ktr.4 b/share/man/man4/ktr.4 index 2f011d378c..e23e145e9f 100644 --- a/share/man/man4/ktr.4 +++ b/share/man/man4/ktr.4 @@ -167,7 +167,7 @@ output. Note that the events are displayed in reverse chronological order. That is, the most recent events are displayed first. .Sh SYSCTL VARIABLES -.Bl -tag -width ".Va debug.ktr.*_enable" +.Bl -tag -width ".Va debug.ktr.resynchronize" .It Va debug.ktr.*_enable A 32 bit mask used to control event logging. Each bit corresponds to one or more events depending on the values of the @@ -184,6 +184,10 @@ for all corresponding events (i.e.\& setting the sysctl to -1). Read only sysctls (one per event) that show the .Va debug.ktr.*_enable values corresponding to the events. +.It Va debug.ktr.resynchronize +Resynchronize the TSC across all CPUs 10 times per second in an attempt to +reduce drift errors. +Note that this is very expensive and therefore the default is 0. .El .Sh SEE ALSO .Xr gdb 1 , -- 2.41.0