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Date:      Sun, 7 Jun 2009 22:52:19 +0000 (UTC)
From:      Kip Macy <kmacy@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-user@freebsd.org
Subject:   svn commit: r193661 - in user/kmacy/releng_7_2_fcs/sys: amd64/conf conf netinet sys
Message-ID:  <200906072252.n57MqJVD007977@svn.freebsd.org>
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Author: kmacy
Date: Sun Jun  7 22:52:19 2009
New Revision: 193661
URL: http://svn.freebsd.org/changeset/base/193661

Log:
  - add pcpu ipid as performance hack

Modified:
  user/kmacy/releng_7_2_fcs/sys/amd64/conf/GENERIC
  user/kmacy/releng_7_2_fcs/sys/conf/options
  user/kmacy/releng_7_2_fcs/sys/netinet/ip_output.c
  user/kmacy/releng_7_2_fcs/sys/sys/pcpu.h

Modified: user/kmacy/releng_7_2_fcs/sys/amd64/conf/GENERIC
==============================================================================
--- user/kmacy/releng_7_2_fcs/sys/amd64/conf/GENERIC	Sun Jun  7 22:50:45 2009	(r193660)
+++ user/kmacy/releng_7_2_fcs/sys/amd64/conf/GENERIC	Sun Jun  7 22:52:19 2009	(r193661)
@@ -30,6 +30,7 @@ makeoptions	MODULES_OVERRIDE="geom zfs c
 makeoptions	OPENSOLARIS
 options		OPENSOLARIS
 options		ZFS
+options		NO_SLOW_STATS
 
 options 	SCHED_ULE		# ULE scheduler
 options 	PREEMPTION		# Enable kernel thread preemption

Modified: user/kmacy/releng_7_2_fcs/sys/conf/options
==============================================================================
--- user/kmacy/releng_7_2_fcs/sys/conf/options	Sun Jun  7 22:50:45 2009	(r193660)
+++ user/kmacy/releng_7_2_fcs/sys/conf/options	Sun Jun  7 22:52:19 2009	(r193661)
@@ -781,3 +781,8 @@ INTR_FILTER             opt_global.h
 # Virtualize the network stack
 VIMAGE			opt_global.h
 VIMAGE_GLOBALS		opt_global.h
+
+
+# remove slow stats keeping
+NO_SLOW_STATS		opt_global.h
+

Modified: user/kmacy/releng_7_2_fcs/sys/netinet/ip_output.c
==============================================================================
--- user/kmacy/releng_7_2_fcs/sys/netinet/ip_output.c	Sun Jun  7 22:50:45 2009	(r193660)
+++ user/kmacy/releng_7_2_fcs/sys/netinet/ip_output.c	Sun Jun  7 22:52:19 2009	(r193661)
@@ -190,8 +190,13 @@ ip_output(struct mbuf *m, struct mbuf *o
 	if ((flags & (IP_FORWARDING|IP_RAWOUTPUT)) == 0) {
 		ip->ip_v = IPVERSION;
 		ip->ip_hl = hlen >> 2;
+#ifndef NO_SLOW_STATS
 		ip->ip_id = ip_newid();
 		V_ipstat.ips_localout++;
+#else
+		ip->ip_id = PCPU_GET(ipid);
+		PCPU_INC(ipid, 1);
+#endif
 	} else {
 		hlen = ip->ip_hl << 2;
 	}

Modified: user/kmacy/releng_7_2_fcs/sys/sys/pcpu.h
==============================================================================
--- user/kmacy/releng_7_2_fcs/sys/sys/pcpu.h	Sun Jun  7 22:50:45 2009	(r193660)
+++ user/kmacy/releng_7_2_fcs/sys/sys/pcpu.h	Sun Jun  7 22:52:19 2009	(r193661)
@@ -72,6 +72,8 @@ struct pcpu {
 	uint64_t	pc_switchtime;
 	int		pc_switchticks;
 	u_int		pc_cpuid;		/* This cpu number */
+	u_short		pc_ipid;
+	u_short		pc_short_pad;
 	cpumask_t	pc_cpumask;		/* This cpu mask */
 	cpumask_t	pc_other_cpus;		/* Mask of all other cpus */
 	SLIST_ENTRY(pcpu) pc_allcpu;

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