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Rate limit (to once per minute) "Listen queue overflow" message in

Browse Source 
sonewconn().

Reviewed by:	scottl, lstewart
Obtained from:	Netflix, Inc
MFC after:	2 weeks
This commit is contained in:
Maksim Yevmenkin 2013-10-31 20:33:21 +00:00
parent c1fd62d4c1
commit f7a3a2a57c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=257472
1 changed files with 15 additions and 3 deletions
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18
sys/kern/uipc_socket.c
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@ -486,6 +486,10 @@ SYSCTL_INT(_regression, OID_AUTO, sonewconn_earlytest, CTLFLAG_RW,
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 connstatus)
#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",