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| author | Denys Vlasenko | 2019-02-15 14:32:08 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2019-02-15 14:32:08 +0100 |
| commit | 8502fa8747e962f69084be09ff8b930e0fb0c449 (patch) | |
| tree | 7157e3cad73c2f562c6797e816af429733495a8c | |
| parent | d712edc6d8f904a4e9d2e26fc9e8a4c45a2cf0b0 (diff) | |
| download | busybox-8502fa8747e962f69084be09ff8b930e0fb0c449.zip busybox-8502fa8747e962f69084be09ff8b930e0fb0c449.tar.gz | |
ntpd: increase SLEW_THRESHOLD from 0.125 to 0.5
Linux kernel supports it since ~2006
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | networking/ntpd.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/networking/ntpd.c b/networking/ntpd.c index 855815e..0f474bc 100644 --- a/networking/ntpd.c +++ b/networking/ntpd.c @@ -177,12 +177,11 @@ */ #define STEP_THRESHOLD 1 /* Slew threshold (sec): adjtimex() won't accept offsets larger than this. - * Using exact power of 2 (1/8) results in smaller code + * Using exact power of 2 (1/8, 1/2 etc) results in smaller code */ -#define SLEW_THRESHOLD 0.125 -//^^^^^^^^^^^^^^^^^^^^^^^^^^ TODO: man adjtimex about tmx.offset: -// "Since Linux 2.6.26, the supplied value is clamped to the range (-0.5s, +0.5s)" -// - can use this larger value instead? +#define SLEW_THRESHOLD 0.5 +// ^^^^ used to be 0.125. +// Since Linux 2.6.26 (circa 2006), kernel accepts (-0.5s, +0.5s) range /* Stepout threshold (sec). std ntpd uses 900 (11 mins (!)) */ //UNUSED: #define WATCH_THRESHOLD 128 |