Author: emax
Date: Thu Oct 31 20:33:21 2013
New Revision: 257472
URL: http://svnweb.freebsd.org/changeset/base/257472
Log:
Rate limit (to once per minute) "Listen queue overflow" message in
sonewconn().
Reviewed by: scottl, lstewart
Obtained from: Netflix, Inc
MFC after: 2 weeks
Modified:
head/sys/kern/uipc_socket.c
Modified: head/sys/kern/uipc_socket.c
==============================================================================
--- head/sys/kern/uipc_socket.c Thu Oct 31 20:32:11 2013 (r257471)
+++ head/sys/kern/uipc_socket.c Thu Oct 31 20:33:21 2013 (r257472)
@@ -486,6 +486,10 @@ SYSCTL_INT(_regression, OID_AUTO, sonewc
struct socket *
sonewconn(struct socket *head, int connstatus)
{
+ static struct timeval lastover;
+ static struct timeval overinterval = { 60, 0 };
+ static int overcount;
+
struct socket *so;
int over;
@@ -497,9 +501,17 @@ sonewconn(struct socket *head, int conns
#else
if (over) {
#endif
- log(LOG_DEBUG, "%s: pcb %p: Listen queue overflow: "
- "%i already in queue awaiting acceptance\n",
- __func__, head->so_pcb, head->so_qlen);
+ overcount++;
+
+ if (ratecheck(&lastover, &overinterval)) {
+ log(LOG_DEBUG, "%s: pcb %p: Listen queue overflow: "
+ "%i already in queue awaiting acceptance "
+ "(%d occurrences)\n",
+ __func__, head->so_pcb, head->so_qlen, overcount);
+
+ overcount = 0;
+ }
+
return (NULL);
}
VNET_ASSERT(head->so_vnet != NULL, ("%s:%d so_vnet is NULL, head=%p",
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