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Date:      Sat, 30 Oct 1999 18:54:07 +0200
From:      "Leif Neland" <leif@neland.dk>
To:        "Alan Cox" <alc@cs.rice.edu>, <current@FreeBSD.ORG>
Subject:   Sv: copy-on-write optimized faults
Message-ID:  <01d501bf22f7$75a55820$0e00a8c0@neland.dk>
References:  <19991029144743.Z16685@cs.rice.edu>

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> 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.)
>=20
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

        0 swap pager pageins
        0 swap pager pages paged in
        0 swap pager pageouts
        0 swap pager pages paged out
    15535 vnode pager pageins
    36906 vnode pager pages paged in
        1 vnode pager pageouts
        1 vnode pager pages paged out
      288 page daemon wakeups
   443092 pages examined by the page daemon
     3784 pages reactivated
  9272885 copy-on-write faults
  2062637 copy-on-write optimized faults <<????????????
 16279599 zero fill pages zeroed
 13314568 zero fill pages prezeroed
      331 intransit blocking page faults
 30579022 total VM faults taken
 32474529 pages freed
      268 pages freed by daemon
 20062301 pages freed by exiting processes
    19657 pages active
    34300 pages inactive
     1952 pages in VM cache
     7255 pages wired down
      800 pages free
     4096 bytes per page
 54787453 total name lookups
          cache hits (77% pos + 7% neg) system 4% per-directory
          deletions 0%, falsehits 0%, toolong 0%

I must have something configured wrong, or???

Leif





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