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| author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-06-17 19:09:05 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-06-17 19:09:05 +0000 |
| commit | 459be35234cc24b69309eb0ee22600024c73713e (patch) | |
| tree | 15ac4122d9c42ec75ba68d342827e37fcb1306ed /libbb/Config.in | |
| parent | e79dd06782175d50f639180cde5b2c56933aa2ee (diff) | |
| download | busybox-459be35234cc24b69309eb0ee22600024c73713e.tar.gz | |
hwclock: size optimizations
libbb/time.c: new file, introducing monotonic_us()
pscan, traceroute, arping: use it instead of gettimeofday
ping, zcip: TODO
function old new delta
monotonic_us - 89 +89
find_pair 164 180 +16
.rodata 129747 129763 +16
refresh 1144 1152 +8
............
timeout 8 4 -4
static.start 8 4 -4
last 8 4 -4
parse_conf 1303 1284 -19
time_main 1149 1124 -25
gettimeofday_us 39 - -39
arping_main 2042 1969 -73
hwclock_main 594 501 -93
catcher 485 380 -105
traceroute_main 4300 4117 -183
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 8/11 up/down: 157/-562) Total: -405 bytes
Diffstat (limited to 'libbb/Config.in')
| -rw-r--r-- | libbb/Config.in | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libbb/Config.in b/libbb/Config.in index a1ff7c056..0a3769df2 100644 --- a/libbb/Config.in +++ b/libbb/Config.in @@ -95,4 +95,14 @@ config FEATURE_EDITING_FANCY_PROMPT Setting this option allows for prompts to use things like \w and \$ and escape codes. +config MONOTONIC_SYSCALL + bool "Use clock_gettime(CLOCK_MONOTONIC) syscall" + default y + help + Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring + time intervals (time, ping, traceroute etc need this). + Probably requires Linux 2.6+. If not selected, gettimeofday + will be used instead (which gives wrong results if date/time + is reset). + endmenu |