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 | |
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 | */ |
128 | |