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
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/*
* iostat: report CPU and I/O statistics
* (C) 1999-2009 by Sebastien Godard (sysstat <at> orange.fr)
*/
#ifndef _IOSTAT_H
#define _IOSTAT_H
#include "common.h"
/* I_: iostat - D_: Display - F_: Flag */
#define I_D_CPU 0x00001
#define I_D_DISK 0x00002
#define I_D_TIMESTAMP 0x00004
#define I_D_EXTENDED 0x00008
#define I_D_PART_ALL 0x00010
#define I_D_KILOBYTES 0x00020
#define I_F_HAS_SYSFS 0x00040
#define I_F_OLD_KERNEL 0x00080
#define I_D_UNFILTERED 0x00100
#define I_D_MEGABYTES 0x00200
#define I_D_PARTITIONS 0x00400
#define I_F_HAS_DISKSTATS 0x00800
#define I_F_HAS_PPARTITIONS 0x01000
#define I_F_PLAIN_KERNEL24 0x02000
#define I_D_NFS 0x04000
#define I_F_HAS_NFS 0x08000
#define I_D_DEVMAP_NAME 0x10000
#define I_D_ISO 0x20000
#define I_D_HUMAN_READ 0x40000
#define I_D_ZERO_OMIT 0x80000
#define DISPLAY_CPU(m) (((m) & I_D_CPU) == I_D_CPU)
#define DISPLAY_DISK(m) (((m) & I_D_DISK) == I_D_DISK)
#define DISPLAY_TIMESTAMP(m) (((m) & I_D_TIMESTAMP) == I_D_TIMESTAMP)
#define DISPLAY_EXTENDED(m) (((m) & I_D_EXTENDED) == I_D_EXTENDED)
#define DISPLAY_PART_ALL(m) (((m) & I_D_PART_ALL) == I_D_PART_ALL)
#define DISPLAY_KILOBYTES(m) (((m) & I_D_KILOBYTES) == I_D_KILOBYTES)
#define DISPLAY_MEGABYTES(m) (((m) & I_D_MEGABYTES) == I_D_MEGABYTES)
#define HAS_SYSFS(m) (((m) & I_F_HAS_SYSFS) == I_F_HAS_SYSFS)
#define HAS_OLD_KERNEL(m) (((m) & I_F_OLD_KERNEL) == I_F_OLD_KERNEL)
#define DISPLAY_UNFILTERED(m) (((m) & I_D_UNFILTERED) == I_D_UNFILTERED)
#define DISPLAY_PARTITIONS(m) (((m) & I_D_PARTITIONS) == I_D_PARTITIONS)
#define HAS_DISKSTATS(m) (((m) & I_F_HAS_DISKSTATS) == I_F_HAS_DISKSTATS)
#define HAS_PPARTITIONS(m) (((m) & I_F_HAS_PPARTITIONS) == I_F_HAS_PPARTITIONS)
#define HAS_PLAIN_KERNEL24(m) (((m) & I_F_PLAIN_KERNEL24) == I_F_PLAIN_KERNEL24)
#define DISPLAY_NFS(m) (((m) & I_D_NFS) == I_D_NFS)
#define HAS_NFS(m) (((m) & I_F_HAS_NFS) == I_F_HAS_NFS)
#define DISPLAY_DEVMAP_NAME(m) (((m) & I_D_DEVMAP_NAME) == I_D_DEVMAP_NAME)
#define DISPLAY_ISO(m) (((m) & I_D_ISO) == I_D_ISO)
#define DISPLAY_HUMAN_READ(m) (((m) & I_D_HUMAN_READ) == I_D_HUMAN_READ)
#define DISPLAY_ZERO_OMIT(m) (((m) & I_D_ZERO_OMIT) == I_D_ZERO_OMIT)
/* Preallocation constats */
#define NR_DEV_PREALLOC 4
#define NR_DISK_PREALLOC 3
#define NR_NFS_PREALLOC 2
/* Device name for old kernels */
#define K_HDISK "hdisk"
/*
* Structures for I/O stats.
* The number of structures allocated corresponds to the number of devices
* present in the system, plus a preallocation number to handle those
* that can be registered dynamically.
* The number of devices is found by using /sys filesystem (if mounted),
* or the number of "disk_io:" entries in /proc/stat (2.4 kernels),
* else the default value is 4 (for old kernels, which maintained stats
* for the first four devices in /proc/stat).
* For each io_stats structure allocated corresponds a io_hdr_stats structure.
* A io_stats structure is considered as unused or "free" (containing no stats
* for a particular device) if the 'major' field of the io_hdr_stats
* structure is set to 0.
*/
struct io_stats {
/* # of sectors read */
unsigned long long rd_sectors __attribute__ ((aligned (8)));
/* # of sectors written */
unsigned long long wr_sectors __attribute__ ((packed));
/* # of read operations issued to the device */
unsigned long rd_ios __attribute__ ((packed));
/* # of read requests merged */
unsigned long rd_merges __attribute__ ((packed));
/* Time of read requests in queue */
unsigned long rd_ticks __attribute__ ((packed));
/* # of write operations issued to the device */
unsigned long wr_ios __attribute__ ((packed));
/* # of write requests merged */
unsigned long wr_merges __attribute__ ((packed));
/* Time of write requests in queue */
unsigned long wr_ticks __attribute__ ((packed));
/* # of I/Os in progress */
unsigned long ios_pgr __attribute__ ((packed));
/* # of ticks total (for this device) for I/O */
unsigned long tot_ticks __attribute__ ((packed));
/* # of ticks requests spent in queue */
unsigned long rq_ticks __attribute__ ((packed));
/* # of I/O done since last reboot */
unsigned long dk_drive __attribute__ ((packed));
/* # of blocks read */
unsigned long dk_drive_rblk __attribute__ ((packed));
/* # of blocks written */
unsigned long dk_drive_wblk __attribute__ ((packed));
};
#define IO_STATS_SIZE (sizeof(struct io_stats))
struct io_nfs_stats {
unsigned long long rd_normal_bytes __attribute__ ((aligned (8)));
unsigned long long wr_normal_bytes __attribute__ ((packed));
unsigned long long rd_direct_bytes __attribute__ ((packed));
unsigned long long wr_direct_bytes __attribute__ ((packed));
unsigned long long rd_server_bytes __attribute__ ((packed));
unsigned long long wr_server_bytes __attribute__ ((packed));
unsigned long rpc_sends __attribute__ ((packed));
unsigned long nfs_rops __attribute__ ((packed));
unsigned long nfs_wops __attribute__ ((packed));
};
#define IO_NFS_STATS_SIZE (sizeof(struct io_nfs_stats))
struct io_hdr_stats {
unsigned int active __attribute__ ((aligned (4)));
unsigned int used __attribute__ ((packed));
char name[MAX_NAME_LEN];
};
#define IO_HDR_STATS_SIZE (sizeof(struct io_hdr_stats))
/* List of devices entered on the command line */
struct io_dlist {
/* Indicate whether its partitions are to be displayed or not */
int disp_part __attribute__ ((aligned (4)));
/* Device name */
char dev_name[MAX_NAME_LEN];
};
#define IO_DLIST_SIZE (sizeof(struct io_dlist))
#endif /* _IOSTAT_H */
|