1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
/*
* Operation statistics for Coda.
* Copyright (C) 1997 Carnegie Mellon University
*
* Carnegie Mellon University encourages users of this software
* to contribute improvements to the Coda project. Contact Peter Braam
* <coda@coda.cs.cmu.edu>.
*/
#define CFS_MOUNT_STATS 0
#define CFS_UMOUNT_STATS 1
#define CFS_ROOT_STATS 2
#define CFS_STATFS_STATS 3
#define CFS_SYNC_STATS 4
#define CFS_VGET_STATS 5
#define CFS_VFSOPS_SIZE 6
/* vnodeops:
* open: all to venus
* close: all to venus
* rdrw: bogus. Maybe redirected to UFS.
* May call open/close for internal opens/closes
* (Does exec not call open?)
* ioctl: causes a lookupname
* passes through
* select: can't get there from here.
* getattr: can be satsified by cache
* setattr: all go through
* access: can be satisfied by cache
* readlink: can be satisfied by cache
* fsync: passes through
* inactive: passes through
* lookup: can be satisfied by cache
* create: passes through
* remove: passes through
* link: passes through
* rename: passes through
* mkdir: passes through
* rmdir: passes through
* symlink: passes through
* readdir: may be redirected to UFS
* may cause an "internal" open/close
*/
#define CFS_OPEN_STATS 0
#define CFS_CLOSE_STATS 1
#define CFS_RDWR_STATS 2
#define CFS_IOCTL_STATS 3
#define CFS_SELECT_STATS 4
#define CFS_GETATTR_STATS 5
#define CFS_SETATTR_STATS 6
#define CFS_ACCESS_STATS 7
#define CFS_READLINK_STATS 8
#define CFS_FSYNC_STATS 9
#define CFS_INACTIVE_STATS 10
#define CFS_LOOKUP_STATS 11
#define CFS_CREATE_STATS 12
#define CFS_REMOVE_STATS 13
#define CFS_LINK_STATS 14
#define CFS_RENAME_STATS 15
#define CFS_MKDIR_STATS 16
#define CFS_RMDIR_STATS 17
#define CFS_SYMLINK_STATS 18
#define CFS_READDIR_STATS 19
#define CFS_VNODEOPS_SIZE 20
/*
* I propose the following structres:
*/
struct cfs_op_stats {
int opcode; /* vfs opcode */
long entries; /* number of times call attempted */
long sat_intrn; /* number of times call satisfied by cache */
long unsat_intrn; /* number of times call failed in cache, but
was not bounced to venus proper. */
long gen_intrn; /* number of times call generated internally */
/* (do we need that?) */
};
/*
* With each call to the minicache, we'll bump the counters whenver
* a call is satisfied internally (through the cache or through a
* redirect), and whenever an operation is caused internally.
* Then, we can add the total operations caught by the minicache
* to the world-wide totals, and leave a caveat for the specific
* graphs later.
*/
|
