blob: 5c3403a7153b9fc7681ac7105ff2ef9c5ae295df (
plain)
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
|
/*
Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#ifndef __IOT_H
#define __IOT_H
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
#include "compat-errno.h"
#include "glusterfs.h"
#include "logging.h"
#include "dict.h"
#include "xlator.h"
#include "common-utils.h"
#include "list.h"
#include <stdlib.h>
#include "locking.h"
#include "iot-mem-types.h"
#include <semaphore.h>
#include "statedump.h"
#define GF_IO_THREADS "io-threads"
const char *_IOT_NAMESPACE_CONF = TOSTRING (GLUSTERD_WORKDIR) "/namespaces.conf";
struct iot_conf;
#define MAX_IDLE_SKEW 4 /* In secs */
#define skew_sec_idle_time(sec) ((sec) + (random () % MAX_IDLE_SKEW))
#define IOT_DEFAULT_IDLE 120 /* In secs. */
#define IOT_MIN_THREADS 1
#define IOT_DEFAULT_THREADS 16
#define IOT_MAX_THREADS 256
#define IOT_MIN_FOP_PER_THREAD 0
#define IOT_MAX_FOP_PER_THREAD 2000
/* A queue (well, typically a set of IOT_PRI_MAX queues) that corresponds to
* a namespace and a priority level. */
typedef struct _iot_ns_queue {
uint32_t hash; /* Hash of namespace queue corresponds to. */
uint32_t weight; /* Weight this queue should have in the clock. */
double percentage; /* Percentage of total weight given to this queue. */
uint32_t slots; /* Temp variable for number of slots to allocate to this queue. */
uint32_t size; /* Number of reqs in the queue currently. */
struct list_head reqs; /* Queue of fop call-stubs (requests) */
} iot_ns_queue_t;
/* A circular buffer which points to multiple queues which approximate a
* weighted round robin serving requests. */
typedef struct _iot_ns_clock {
unsigned int idx; /* Current idx of position on clock. */
size_t size; /* Size of clock. */
iot_ns_queue_t **slots; /* Circular buffer of clock slots. */
} iot_ns_clock_t;
#define IOT_THREAD_STACK_SIZE ((size_t)(1024*1024*8))
struct iot_conf {
pthread_mutex_t mutex;
pthread_cond_t cond;
gf_boolean_t iambrickd;
int32_t max_count; /* configured maximum */
int32_t fops_per_thread_ratio;
int32_t curr_count; /* actual number of threads running */
int32_t sleep_count;
int32_t idle_time; /* in seconds */
gf_boolean_t ns_weighted_queueing;
uint32_t ns_default_weight;
double ns_weight_tolerance;
uint32_t ns_conf_reinit_secs;
time_t ns_conf_mtime;
dict_t *ns_queues; /* Queue for requsts for namespaces that were parsed. */
dict_t *hash_to_ns; /* Hash key (string) -> Namespace string */
iot_ns_clock_t ns_clocks[IOT_PRI_MAX]; /* Weighted Round Robin clocks (per priority). */
iot_ns_queue_t ns_unknown_queue[IOT_PRI_MAX]; /* Queue for untagged requests (per priority). */
gf_boolean_t reinit_ns_conf_thread_running;
pthread_t reinit_ns_conf_thread;
int32_t ac_iot_limit[IOT_PRI_MAX];
int32_t ac_iot_count[IOT_PRI_MAX];
int queue_sizes[IOT_PRI_MAX];
int queue_size;
pthread_attr_t w_attr;
gf_boolean_t least_priority; /* Enable/Disable least-priority */
xlator_t *this;
size_t stack_size;
int32_t watchdog_secs;
gf_boolean_t watchdog_running;
pthread_t watchdog_thread;
gf_boolean_t queue_marked[IOT_PRI_MAX];
gf_boolean_t cleanup_disconnected_reqs;
};
typedef struct iot_conf iot_conf_t;
iot_pri_t iot_fop_to_pri (glusterfs_fop_t fop);
#endif /* __IOT_H */
|
