1/* $NetBSD: coda_opstats.h,v 1.6 2005/12/11 12:19:50 christos 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
110struct 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 */
128