nginx: 9e7de0547f09

changeset 7939:9e7de0547f09

Removed CLOCK_MONOTONIC_COARSE support. While clock_gettime(CLOCK_MONOTONIC_COARSE) is faster than clock_gettime(CLOCK_MONOTONIC), the latter is fast enough on Linux for practical usage, and the difference is negligible compared to other costs at each event loop iteration. On the other hand, CLOCK_MONOTONIC_COARSE causes various issues with typical CONFIG_HZ=250, notably very inaccurate limit_rate handling in some edge cases (ticket #1678) and negative difference between $request_time and $upstream_response_time (ticket #1965).

author Maxim Dounin <mdounin@mdounin.ru>

date Thu, 21 Oct 2021 18:38:38 +0300

parents dc955d274130

children 46a02ed7c966

files src/core/ngx_times.c

diffstat

1 files changed, 0 insertions(+), 4 deletions(-) [+]

line wrap: on

line diff

--- a/src/core/ngx_times.c
+++ b/src/core/ngx_times.c
@@ -200,10 +200,6 @@ ngx_monotonic_time(time_t sec, ngx_uint_
 
 #if defined(CLOCK_MONOTONIC_FAST)
     clock_gettime(CLOCK_MONOTONIC_FAST, &ts);
-
-#elif defined(CLOCK_MONOTONIC_COARSE)
-    clock_gettime(CLOCK_MONOTONIC_COARSE, &ts);
-
 #else
     clock_gettime(CLOCK_MONOTONIC, &ts);
 #endif