From dcbb9fe07ce0c48ffaf6300167eb74276d129136 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Sun, 22 Dec 2019 11:58:15 +0100 Subject: [PATCH] event/Loop: round timeout up to avoid unnecessary wakeups --- NEWS | 1 + src/event/Loop.cxx | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/NEWS b/NEWS index 1c514b8dc..169a9610b 100644 --- a/NEWS +++ b/NEWS @@ -1,4 +1,5 @@ ver 0.21.18 (not yet released) +* reduce unnecessary CPU wakeups ver 0.21.17 (2019/12/16) * protocol diff --git a/src/event/Loop.cxx b/src/event/Loop.cxx index 644cacc39..d3de427c9 100644 --- a/src/event/Loop.cxx +++ b/src/event/Loop.cxx @@ -137,7 +137,8 @@ static constexpr int ExportTimeoutMS(std::chrono::steady_clock::duration timeout) { return timeout >= timeout.zero() - ? int(std::chrono::duration_cast(timeout).count()) + /* round up (+1) to avoid unnecessary wakeups */ + ? int(std::chrono::duration_cast(timeout).count()) + 1 : -1; }