sys/coda/coda_opstats.h

   1 /*      $NetBSD: coda_opstats.h,v 1.4.46.1 2005/03/04 16:39:21 skrll Exp $      */
   2
   3 /*
   4  *
   5  *             Coda: an Experimental Distributed File System
   6  *                              Release 3.1
   7  *
   8  *           Copyright (c) 1987-1998 Carnegie Mellon University
   9  *                          All Rights Reserved
  10  *
  11  * Permission  to  use, copy, modify and distribute this software and its
  12  * documentation is hereby granted,  provided  that  both  the  copyright
  13  * notice  and  this  permission  notice  appear  in  all  copies  of the
  14  * software, derivative works or  modified  versions,  and  any  portions
  15  * thereof, and that both notices appear in supporting documentation, and
  16  * that credit is given to Carnegie Mellon University  in  all  documents
  17  * and publicity pertaining to direct or indirect use of this code or its
  18  * derivatives.
  19  *
  20  * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS  KNOWN  TO  HAVE  BUGS,
  21  * SOME  OF  WHICH MAY HAVE SERIOUS CONSEQUENCES.  CARNEGIE MELLON ALLOWS
  22  * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.   CARNEGIE  MELLON
  23  * DISCLAIMS  ANY  LIABILITY  OF  ANY  KIND  FOR  ANY  DAMAGES WHATSOEVER
  24  * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE  OR  OF
  25  * ANY DERIVATIVE WORK.
  26  *
  27  * Carnegie  Mellon  encourages  users  of  this  software  to return any
  28  * improvements or extensions that  they  make,  and  to  grant  Carnegie
  29  * Mellon the rights to redistribute these changes without encumbrance.
  30  *
  31  *      @(#) coda/coda_opstats.h,v 1.1.1.1 1998/08/29 21:26:46 rvb Exp $
  32  */
  33
  34 /*
  35  * operation stats: what the minicache can intercept that
  36  * *isn't* seen by venus.  These stats are kept to augment
  37  * the stats maintained by the Volume-Session mechanism.
  38  */
  39
  40 /* vfsops:
  41  *          mount: not currently bounced to Venus
  42  *          umount: nope
  43  *          root: only first call, rest is cached.
  44  *          statfs: none (bogus)
  45  *          sync: none (bogus)
  46  *          vget: all
  47  */
  48
  49 #define CODA_MOUNT_STATS  0
  50 #define CODA_UMOUNT_STATS 1
  51 #define CODA_ROOT_STATS   2
  52 #define CODA_STATFS_STATS 3
  53 #define CODA_SYNC_STATS   4
  54 #define CODA_VGET_STATS   5
  55 #define CODA_VFSOPS_SIZE  6
  56
  57 /* vnodeops:
  58  *            open: all to venus
  59  *            close: all to venus
  60  *            rdrw: bogus.  Maybe redirected to UFS.
  61  *                          May call open/close for internal opens/closes
  62  *                          (Does exec not call open?)
  63  *            ioctl: causes a lookupname
  64  *                   passes through
  65  *            select: can't get there from here.
  66  *            getattr: can be satsified by cache
  67  *            setattr: all go through
  68  *            access: can be satisfied by cache
  69  *            readlink: can be satisfied by cache
  70  *            fsync: passes through
  71  *            inactive: passes through
  72  *            lookup: can be satisfied by cache
  73  *            create: passes through
  74  *            remove: passes through
  75  *            link: passes through
  76  *            rename: passes through
  77  *            mkdir: passes through
  78  *            rmdir: passes through
  79  *            symlink: passes through
  80  *            readdir: may be redirected to UFS
  81  *                     may cause an "internal" open/close
  82  */
  83
  84 #define CODA_OPEN_STATS     0
  85 #define CODA_CLOSE_STATS    1
  86 #define CODA_RDWR_STATS     2
  87 #define CODA_IOCTL_STATS    3
  88 #define CODA_SELECT_STATS   4
  89 #define CODA_GETATTR_STATS  5
  90 #define CODA_SETATTR_STATS  6
  91 #define CODA_ACCESS_STATS   7
  92 #define CODA_READLINK_STATS 8
  93 #define CODA_FSYNC_STATS    9
  94 #define CODA_INACTIVE_STATS 10
  95 #define CODA_LOOKUP_STATS   11
  96 #define CODA_CREATE_STATS   12
  97 #define CODA_REMOVE_STATS   13
  98 #define CODA_LINK_STATS     14
  99 #define CODA_RENAME_STATS   15
 100 #define CODA_MKDIR_STATS    16
 101 #define CODA_RMDIR_STATS    17
 102 #define CODA_SYMLINK_STATS  18
 103 #define CODA_READDIR_STATS  19
 104 #define CODA_VNODEOPS_SIZE  20
 105
 106 /*
 107  * I propose the following structres:
 108  */
 109
 110 struct coda_op_stats {
 111     int opcode;       /* vfs opcode */
 112     long entries;     /* number of times call attempted */
 113     long sat_intrn;   /* number of times call satisfied by cache */
 114     long unsat_intrn; /* number of times call failed in cache, but
 115                          was not bounced to venus proper. */
 116     long gen_intrn;   /* number of times call generated internally */
 117                       /* (do we need that?) */
 118 };
 119
 120 /*
 121  * With each call to the minicache, we'll bump the counters whenver
 122  * a call is satisfied internally (through the cache or through a
 123  * redirect), and whenever an operation is caused internally.
 124  * Then, we can add the total operations caught by the minicache
 125  * to the world-wide totals, and leave a caveat for the specific
 126  * graphs later.
 127  */