From: willy tarreau <willy@wtap.(none)>
Date: Sun, 19 Mar 2006 18:36:48 +0000 (+0100)
Subject: Limit the number of consecutive accept() in multi-process mode.
X-Git-Tag: v1.2.10~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c2becdc40314ca18fbb35f20c292e5313949ae4e;p=thirdparty%2Fhaproxy.git

Limit the number of consecutive accept() in multi-process mode.
This produces a more evenly distributed load across the processes and slightly
improves performance by reducing bottlenecks.
---

diff --git a/haproxy.c b/haproxy.c
index bad84a0974..1b39264a3e 100644
--- a/haproxy.c
+++ b/haproxy.c
@@ -2555,8 +2555,14 @@ int event_accept(int fd) {
     struct session *s;
     struct task *t;
     int cfd;
+    int max_accept;
 
-    while (p->nbconn < p->maxconn) {
+    if (global.nbproc > 1)
+	    max_accept = 8; /* let other processes catch some connections too */
+    else
+	    max_accept = -1;
+
+    while (p->nbconn < p->maxconn && max_accept--) {
 	struct sockaddr_storage addr;
 	socklen_t laddr = sizeof(addr);