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
|
// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef NETDATA_EBPF_CACHESTAT_H
#define NETDATA_EBPF_CACHESTAT_H 1
// Module name & description
#define NETDATA_EBPF_MODULE_NAME_CACHESTAT "cachestat"
#define NETDATA_EBPF_CACHESTAT_MODULE_DESC "Monitor Linux page cache internal functions. This thread is integrated with apps and cgroup."
// charts
#define NETDATA_CACHESTAT_HIT_RATIO_CHART "cachestat_ratio"
#define NETDATA_CACHESTAT_DIRTY_CHART "cachestat_dirties"
#define NETDATA_CACHESTAT_HIT_CHART "cachestat_hits"
#define NETDATA_CACHESTAT_MISSES_CHART "cachestat_misses"
#define NETDATA_CACHESTAT_SUBMENU "page_cache"
#define EBPF_CACHESTAT_UNITS_PAGE "pages/s"
#define EBPF_CACHESTAT_UNITS_HITS "hits/s"
#define EBPF_CACHESTAT_UNITS_MISSES "misses/s"
// configuration file
#define NETDATA_CACHESTAT_CONFIG_FILE "cachestat.conf"
// Contexts
#define NETDATA_MEM_CACHESTAT_HIT_RATIO_CONTEXT "mem.cachestat_ratio"
#define NETDATA_MEM_CACHESTAT_MODIFIED_CACHE_CONTEXT "mem.cachestat_dirties"
#define NETDATA_MEM_CACHESTAT_HIT_FILES_CONTEXT "mem.cachestat_hits"
#define NETDATA_MEM_CACHESTAT_MISS_FILES_CONTEXT "mem.cachestat_misses"
#define NETDATA_CGROUP_CACHESTAT_HIT_RATIO_CONTEXT "cgroup.cachestat_ratio"
#define NETDATA_CGROUP_CACHESTAT_MODIFIED_CACHE_CONTEXT "cgroup.cachestat_dirties"
#define NETDATA_CGROUP_CACHESTAT_HIT_FILES_CONTEXT "cgroup.cachestat_hits"
#define NETDATA_CGROUP_CACHESTAT_MISS_FILES_CONTEXT "cgroup.cachestat_misses"
#define NETDATA_SYSTEMD_CACHESTAT_HIT_RATIO_CONTEXT "systemd.service.cachestat_ratio"
#define NETDATA_SYSTEMD_CACHESTAT_MODIFIED_CACHE_CONTEXT "systemd.service.cachestat_dirties"
#define NETDATA_SYSTEMD_CACHESTAT_HIT_FILE_CONTEXT "systemd.service.cachestat_hits"
#define NETDATA_SYSTEMD_CACHESTAT_MISS_FILES_CONTEXT "systemd.service.cachestat_misses"
// variables
enum cachestat_counters {
NETDATA_KEY_CALLS_ADD_TO_PAGE_CACHE_LRU,
NETDATA_KEY_CALLS_MARK_PAGE_ACCESSED,
NETDATA_KEY_CALLS_ACCOUNT_PAGE_DIRTIED,
NETDATA_KEY_CALLS_MARK_BUFFER_DIRTY,
NETDATA_CACHESTAT_END
};
enum cachestat_account_dirty_pages {
NETDATA_CACHESTAT_ACCOUNT_PAGE_DIRTY,
NETDATA_CACHESTAT_SET_PAGE_DIRTY,
NETDATA_CACHESTAT_FOLIO_DIRTY,
NETDATA_CACHESTAT_ACCOUNT_DIRTY_END
};
enum cachestat_indexes {
NETDATA_CACHESTAT_IDX_RATIO,
NETDATA_CACHESTAT_IDX_DIRTY,
NETDATA_CACHESTAT_IDX_HIT,
NETDATA_CACHESTAT_IDX_MISS
};
enum cachestat_tables {
NETDATA_CACHESTAT_GLOBAL_STATS,
NETDATA_CACHESTAT_PID_STATS,
NETDATA_CACHESTAT_CTRL
};
typedef struct netdata_cachestat_pid {
uint64_t ct;
uint32_t tgid;
uint32_t uid;
uint32_t gid;
char name[TASK_COMM_LEN];
uint32_t add_to_page_cache_lru;
uint32_t mark_page_accessed;
uint32_t account_page_dirtied;
uint32_t mark_buffer_dirty;
} netdata_cachestat_pid_t;
typedef struct __attribute__((packed)) netdata_cachestat {
uint32_t add_to_page_cache_lru;
uint32_t mark_page_accessed;
uint32_t account_page_dirtied;
uint32_t mark_buffer_dirty;
} netdata_cachestat_t;
typedef struct __attribute__((packed)) netdata_publish_cachestat {
uint64_t ct;
long long ratio;
long long dirty;
long long hit;
long long miss;
netdata_cachestat_t current;
netdata_cachestat_t prev;
} netdata_publish_cachestat_t;
void *ebpf_cachestat_thread(void *ptr);
void ebpf_cachestat_release(netdata_publish_cachestat_t *stat);
extern struct config cachestat_config;
extern netdata_ebpf_targets_t cachestat_targets[];
extern ebpf_local_maps_t cachestat_maps[];
#endif // NETDATA_EBPF_CACHESTAT_H
|
