Throttle: reset max only if max changed

Save some CPU cycles.

Signed-off-by: Henry Chang <henry@bigtera.com>

diff --git a/src/common/Throttle.cc b/src/common/Throttle.cc
index f0dd91d4db9e42fe01277909d6569127fa48a2bb..ce7666904e1741877c70ff88af1240d67036c61c 100644 (file)
--- a/src/common/Throttle.cc
+++ b/src/common/Throttle.cc
@@ -80,6 +80,8 @@ Throttle::~Throttle()
 void Throttle::_reset_max(int64_t m)
 {
   assert(lock.is_locked());
+  if ((int64_t)max.read() == m)
+    return;
   if (!cond.empty())
     cond.front()->SignalOne();
   if (logger)