Date: Sun, 31 Oct 1999 11:44:20 +0100 From: Iceman <iceman@nrg4u.com> To: Leif Neland <leif@neland.dk> Cc: Alan Cox <alc@cs.rice.edu>, current@FreeBSD.ORG Subject: Re: Sv: copy-on-write optimized faults Message-ID: <381C1D84.C0125AD7@nrg4u.com> References: <19991029144743.Z16685@cs.rice.edu> <01d501bf22f7$75a55820$0e00a8c0@neland.dk>
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Leif Neland wrote:
>
> > I would appreciate it if people running -current would run a "vmstat -s"
> > and tell me if they see a NON-ZERO value for copy-on-write optimized
> > faults. About six months ago, I implemented a simpler and more general
> > optimization at an earlier "fork in the road". (In effect, I avoid
> > the creation of the redundant vm object that "copy-on-write
> > optimized faults" applies to.)
> >
> FreeBSD ns.internet.dk 3.3-STABLE FreeBSD 3.3-STABLE #6: Fri Oct 1 16:06:46 CEST 1999 root@neland.dk:/usr/src/sys/compile/DK i386
>
> 9272885 copy-on-write faults
> 2062637 copy-on-write optimized faults <<????????????
>
> I must have something configured wrong, or???
I get high numbers too:
FreeBSD mailtoaster1.pipeline.ch 3.2-STABLE FreeBSD 3.2-STABLE #3: Sun
Jun 13 20:31:43 CEST 1999 opi@mailtoaster1.pipeline.ch:/usr/src/sys
/compile/mailtoaster1 i386
11:40AM up 137 days, 23:26, 1 user, load averages: 0.00, 0.00, 0.00
64598649 cpu context switches
2745071057 device interrupts
32328669 software interrupts
43110463 traps
296791454 system calls
0 swap pager pageins
0 swap pager pages paged in
0 swap pager pageouts
0 swap pager pages paged out
22418 vnode pager pageins
46048 vnode pager pages paged in
0 vnode pager pageouts
0 vnode pager pages paged out
122 page daemon wakeups
188111 pages examined by the page daemon
2100 pages reactivated
10358286 copy-on-write faults
693663 copy-on-write optimized faults
20699423 zero fill pages zeroed
15663587 zero fill pages prezeroed
252 intransit blocking page faults
41725673 total VM faults taken
43325585 pages freed
112 pages freed by daemon
25621561 pages freed by exiting processes
17199 pages active
35325 pages inactive
1922 pages in VM cache
8481 pages wired down
1067 pages free
4096 bytes per page
85804588 total name lookups
cache hits (67% pos + 5% neg) system 7% per-directory
deletions 1%, falsehits 0%, toolong 0%
FreeBSD proxy.pipeline.ch 3.3-STABLE FreeBSD 3.3-STABLE #3: Fri Oct 8
11:08:16 CEST 1999 opi@proxy.pipeline.ch:/usr/src/sys/compile/
proxy i386
11:38AM up 22 days, 14:59, 2 users, load averages: 0.00, 0.00, 0.00
16661677 cpu context switches
467666693 device interrupts
12164983 software interrupts
11257840 traps
120776685 system calls
6941 swap pager pageins
7483 swap pager pages paged in
725 swap pager pageouts
2821 swap pager pages paged out
4196 vnode pager pageins
12204 vnode pager pages paged in
0 vnode pager pageouts
0 vnode pager pages paged out
1885 page daemon wakeups
4572222 pages examined by the page daemon
4850 pages reactivated
449499 copy-on-write faults
30784 copy-on-write optimized faults
555925 zero fill pages zeroed
312825 zero fill pages prezeroed
576 intransit blocking page faults
1619807 total VM faults taken
1826533 pages freed
1817 pages freed by daemon
703761 pages freed by exiting processes
22101 pages active
2977 pages inactive
1520 pages in VM cache
4868 pages wired down
224 pages free
4096 bytes per page
18695799 total name lookups
cache hits (51% pos + 4% neg) system 31% per-directory
deletions 0%, falsehits 0%, toolong 0%
--
Andre
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