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-rw-r--r--rts/RtsFlags.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/rts/RtsFlags.c b/rts/RtsFlags.c
index 898acac344..e439afe00c 100644
--- a/rts/RtsFlags.c
+++ b/rts/RtsFlags.c
@@ -394,9 +394,12 @@ usage_text[] = {
" -N<n> Use <n> PVMish processors in parallel (default: 2)",
/* NB: the -N<n> is implemented by the driver!! */
#endif
-" -C<secs> Context-switch interval in seconds",
-" (0 or no argument means switch as often as possible)",
-" the default is .02 sec; resolution is .02 sec",
+" -C<secs> Context-switch interval in seconds.",
+" 0 or no argument means switch as often as possible.",
+" Default: 0.02 sec; resolution is set by -V below.",
+" -V<secs> Master tick interval in seconds.",
+" This sets the resolution for -C and the profile timer -i.",
+" Default: 0.02 sec.",
"",
" -vs Trace scheduler events (see also -Ds with -debug)",
" -vt Time-stamp trace messages",