1 /*-
2 *
3 * Coda: an Experimental Distributed File System
4 * Release 3.1
5 *
6 * Copyright (c) 1987-1998 Carnegie Mellon University
7 * All Rights Reserved
8 *
9 * Permission to use, copy, modify and distribute this software and its
10 * documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation, and
14 * that credit is given to Carnegie Mellon University in all documents
15 * and publicity pertaining to direct or indirect use of this code or its
16 * derivatives.
17 *
18 * CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS KNOWN TO HAVE BUGS,
19 * SOME OF WHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON ALLOWS
20 * FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION. CARNEGIE MELLON
21 * DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
22 * RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE OR OF
23 * ANY DERIVATIVE WORK.
24 *
25 * Carnegie Mellon encourages users of this software to return any
26 * improvements or extensions that they make, and to grant Carnegie
27 * Mellon the rights to redistribute these changes without encumbrance.
28 *
29 * @(#) src/sys/coda/coda_opstats.h,v 1.1.1.1 1998/08/29 21:14:52 rvb Exp $
30 * $FreeBSD: releng/6.0/sys/coda/coda_opstats.h 139745 2005-01-05 23:35:00Z imp $
31 *
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 */
Cache object: 757e5a0cd5fd56b9b245142f7a791bc3
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