Thanks for this.
The cpu_search problem you reference came up here at Isilon as well. Here's a
patch which should get clang to do the "right thing" (inlining 3 specialized
copies of cpu_search); I haven't checked to make sure it doesn't hurt gcc,
though.
Anton
Index: sched_ule.c
===================================================================
--- sched_ule.c (revision 268043)
+++ sched_ule.c (working copy)
@@ -622,11 +622,11 @@
for ((cpu) = 0; (cpu) <= mp_maxid; (cpu)++) \
if (CPU_ISSET(cpu, &mask))
-static __inline int cpu_search(const struct cpu_group *cg, struct cpu_search
*low,
+static __always_inline int cpu_search(const struct cpu_group *cg, struct
cpu_search *low,
struct cpu_search *high, const int match);
-int cpu_search_lowest(const struct cpu_group *cg, struct cpu_search *low);
-int cpu_search_highest(const struct cpu_group *cg, struct cpu_search *high);
-int cpu_search_both(const struct cpu_group *cg, struct cpu_search *low,
+int __noinline cpu_search_lowest(const struct cpu_group *cg, struct cpu_search
*low);
+int __noinline cpu_search_highest(const struct cpu_group *cg, struct
cpu_search *high);
+int __noinline cpu_search_both(const struct cpu_group *cg, struct cpu_search
*low,
struct cpu_search *high);
/*
@@ -640,7 +640,7 @@
* match argument. It is reduced to the minimum set for each case. It is
* also recursive to the depth of the tree.
*/
-static __inline int
+static __always_inline int
cpu_search(const struct cpu_group *cg, struct cpu_search *low,
struct cpu_search *high, const int match)
{
-----Original Message-----
From: owner-freebsd-curr...@freebsd.org
[mailto:owner-freebsd-curr...@freebsd.org] On Behalf Of Konstantin Belousov
Sent: Friday, June 27, 2014 7:56 AM
To: performa...@freebsd.org
Cc: curr...@freebsd.org
Subject: PostgreSQL performance on FreeBSD
Hi,
I did some measurements and hacks to see about the performance and scalability
of PostgreSQL 9.3 on FreeBSD, sponsored by The FreeBSD Foundation.
The results are described in https://kib.kiev.ua/kib/pgsql_perf.pdf.
The uncommitted patches, referenced in the article, are available as
https://kib.kiev.ua/kib/pig1.patch.txt
https://kib.kiev.ua/kib/patch-2
_______________________________________________
freebsd-performance@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-performance
To unsubscribe, send any mail to "freebsd-performance-unsubscr...@freebsd.org"
