# HG changeset patch
# User Maxim Dounin <mdounin@mdounin.ru>
# Date 1634830718 -10800
# Node ID 9e7de0547f094be7ddffcdb763e393f6b13a0f25
# Parent  dc955d27413024742c9a8f00aaa8583eb312cc6a
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).

diff --git a/src/core/ngx_times.c b/src/core/ngx_times.c
--- 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