FreeBSD 7.0: dummynet 99% cpu

[Sergey Matveyhcuk]

Could you test an included patch?

Eugene L Kovalenja wrote:
> 
> Time in three days traffic via ipfw doesn't go. In top:
>   21 root         1 -44    -     0K     8K WAIT   7   2:15  99.02% dummynet
> (this is example, not copy\paste)
> 
> Also sw1: net increases from 5-10% to 30-35%...
> 
> I am helped only by reboot.
> 
> In what can consist the problem?
> 

-------------- next part --------------
--- sys/netinet/ip_dummynet.c.orig	2009-03-20 12:08:47.000000000 +0300
+++ sys/netinet/ip_dummynet.c	2009-03-20 12:09:31.000000000 +0300
@@ -145,8 +145,8 @@
 static void	ready_event_wfq(struct dn_pipe *p, struct mbuf **head,
 		    struct mbuf **tail);
 
-#define	HASHSIZE	16
-#define	HASH(num)	((((num) >> 8) ^ ((num) >> 4) ^ (num)) & 0x0f)
+#define	HASHSIZE	255
+#define	HASH(num)	((((num) >> 8) ^ ((num) >> 4) ^ (num)) & 0xff)
 static struct dn_pipe_head	pipehash[HASHSIZE];	/* all pipes */
 static struct dn_flow_set_head	flowsethash[HASHSIZE];	/* all flowsets */