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To: current@freebsd.org
Subject: kernel profiling data...
From: Poul-Henning Kamp <phk@dk.tfs.com>
Date: Thu, 14 Aug 1997 12:29:44 +0200
Message-ID: <2419.871554584@critter.dk.tfs.com>
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Should anybody be interested, I'm currently running my kernel with basic-
block profiling.  If there are any particular piece of code you want
to get some numbers for, let me know.

Here is a snapshot per procedure.  The metric is "number of bytes * number
of executions" which doesn't take procedure calls into account.  It's still
a pretty good metric anyway:

	2141424420 pmap_pte_quick
	2123382399 malloc
	1967036165 vm_pageout_page_stats
	1891991217 sc_bcopy		/* this is special in my code */
	1849258604 pmap_is_managed
	1822361685 in_cksum
	1745752719 lookup
	1647903703 selscan
	1621132031 userret
	1525817854 free
	1478288512 hardclock
	1384795000 scanc
	1238605405 select
	1228973774 __qdivrem
	1203676414 ffs_sync
	1136352924 timeout
	1076999688 splvm
	1072813562 vfs_msync
	 960134796 tcp_output
	 874196469 VOP_ISLOCKED
	 839275470 splhigh
	 825929764 inbc
	 754320392 lockstatus
	 753825169 vm_pageout_scan
	 659921964 getit
	 656055743 cpu_clockupdate
	 631443113 edintr_sc
	 608603985 outbv
	 601732656 clock_latency
	 560227824 ufs_islocked
	 528477347 cache_lookup

--
Poul-Henning Kamp           | phk@FreeBSD.ORG       FreeBSD Core-team.
http://www.freebsd.org/~phk | phk@login.dknet.dk    Private mailbox.
whois: [PHK]                | phk@tfs.com	    TRW Financial Systems, Inc.
Future will arrive by its own means, progress not so.