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Posted to commits@qpid.apache.org by ac...@apache.org on 2017/06/09 01:25:38 UTC
[15/50] [abbrv] qpid-proton git commit: PROTON-1460: epoll lower
HOGMAX for better performance
PROTON-1460: epoll lower HOGMAX for better performance
Project: http://git-wip-us.apache.org/repos/asf/qpid-proton/repo
Commit: http://git-wip-us.apache.org/repos/asf/qpid-proton/commit/adb17eb7
Tree: http://git-wip-us.apache.org/repos/asf/qpid-proton/tree/adb17eb7
Diff: http://git-wip-us.apache.org/repos/asf/qpid-proton/diff/adb17eb7
Branch: refs/heads/go1
Commit: adb17eb727ef914e03f7cb542a02b2a32a48afee
Parents: b0be770
Author: Clifford Jansen <cl...@apache.org>
Authored: Tue May 16 08:20:14 2017 -0700
Committer: Clifford Jansen <cl...@apache.org>
Committed: Tue May 16 08:20:14 2017 -0700
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proton-c/src/proactor/epoll.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
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http://git-wip-us.apache.org/repos/asf/qpid-proton/blob/adb17eb7/proton-c/src/proactor/epoll.c
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diff --git a/proton-c/src/proactor/epoll.c b/proton-c/src/proactor/epoll.c
index 9fd7d06..d79f0da 100644
--- a/proton-c/src/proactor/epoll.c
+++ b/proton-c/src/proactor/epoll.c
@@ -210,10 +210,10 @@ const char *AMQP_PORT_NAME = "amqp";
PN_HANDLE(PN_PROACTOR)
// The number of times a connection event batch may be replenished for
-// a thread between calls to wait().
-// TODO: consider some instrumentation to determine an optimal number
-// or perhaps switch to cpu time based limit.
-#define HOG_MAX 3
+// a thread between calls to wait(). Some testing shows that
+// increasing this value above 1 actually slows performance slightly
+// and increases latency.
+#define HOG_MAX 1
/* pn_proactor_t and pn_listener_t are plain C structs with normal memory management.
Class definitions are for identification as pn_event_t context only.
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