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metric.h
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metric.h
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _FS_CEPH_MDS_METRIC_H
#define _FS_CEPH_MDS_METRIC_H
#include <linux/ceph/types.h>
#include <linux/percpu_counter.h>
#include <linux/ktime.h>
extern bool disable_send_metrics;
enum ceph_metric_type {
CLIENT_METRIC_TYPE_CAP_INFO,
CLIENT_METRIC_TYPE_READ_LATENCY,
CLIENT_METRIC_TYPE_WRITE_LATENCY,
CLIENT_METRIC_TYPE_METADATA_LATENCY,
CLIENT_METRIC_TYPE_DENTRY_LEASE,
CLIENT_METRIC_TYPE_OPENED_FILES,
CLIENT_METRIC_TYPE_PINNED_ICAPS,
CLIENT_METRIC_TYPE_OPENED_INODES,
CLIENT_METRIC_TYPE_READ_IO_SIZES,
CLIENT_METRIC_TYPE_WRITE_IO_SIZES,
CLIENT_METRIC_TYPE_AVG_READ_LATENCY,
CLIENT_METRIC_TYPE_STDEV_READ_LATENCY,
CLIENT_METRIC_TYPE_AVG_WRITE_LATENCY,
CLIENT_METRIC_TYPE_STDEV_WRITE_LATENCY,
CLIENT_METRIC_TYPE_AVG_METADATA_LATENCY,
CLIENT_METRIC_TYPE_STDEV_METADATA_LATENCY,
CLIENT_METRIC_TYPE_MAX = CLIENT_METRIC_TYPE_STDEV_METADATA_LATENCY,
};
/*
* This will always have the highest metric bit value
* as the last element of the array.
*/
#define CEPHFS_METRIC_SPEC_CLIENT_SUPPORTED { \
CLIENT_METRIC_TYPE_CAP_INFO, \
CLIENT_METRIC_TYPE_READ_LATENCY, \
CLIENT_METRIC_TYPE_WRITE_LATENCY, \
CLIENT_METRIC_TYPE_METADATA_LATENCY, \
CLIENT_METRIC_TYPE_DENTRY_LEASE, \
CLIENT_METRIC_TYPE_OPENED_FILES, \
CLIENT_METRIC_TYPE_PINNED_ICAPS, \
CLIENT_METRIC_TYPE_OPENED_INODES, \
CLIENT_METRIC_TYPE_READ_IO_SIZES, \
CLIENT_METRIC_TYPE_WRITE_IO_SIZES, \
CLIENT_METRIC_TYPE_AVG_READ_LATENCY, \
CLIENT_METRIC_TYPE_STDEV_READ_LATENCY, \
CLIENT_METRIC_TYPE_AVG_WRITE_LATENCY, \
CLIENT_METRIC_TYPE_STDEV_WRITE_LATENCY, \
CLIENT_METRIC_TYPE_AVG_METADATA_LATENCY, \
CLIENT_METRIC_TYPE_STDEV_METADATA_LATENCY, \
\
CLIENT_METRIC_TYPE_MAX, \
}
struct ceph_metric_header {
__le32 type; /* ceph metric type */
__u8 ver;
__u8 compat;
__le32 data_len; /* length of sizeof(hit + mis + total) */
} __packed;
/* metric caps header */
struct ceph_metric_cap {
struct ceph_metric_header header;
__le64 hit;
__le64 mis;
__le64 total;
} __packed;
/* metric read latency header */
struct ceph_metric_read_latency {
struct ceph_metric_header header;
struct ceph_timespec lat;
struct ceph_timespec avg;
__le64 sq_sum;
__le64 count;
} __packed;
/* metric write latency header */
struct ceph_metric_write_latency {
struct ceph_metric_header header;
struct ceph_timespec lat;
struct ceph_timespec avg;
__le64 sq_sum;
__le64 count;
} __packed;
/* metric metadata latency header */
struct ceph_metric_metadata_latency {
struct ceph_metric_header header;
struct ceph_timespec lat;
struct ceph_timespec avg;
__le64 sq_sum;
__le64 count;
} __packed;
/* metric dentry lease header */
struct ceph_metric_dlease {
struct ceph_metric_header header;
__le64 hit;
__le64 mis;
__le64 total;
} __packed;
/* metric opened files header */
struct ceph_opened_files {
struct ceph_metric_header header;
__le64 opened_files;
__le64 total;
} __packed;
/* metric pinned i_caps header */
struct ceph_pinned_icaps {
struct ceph_metric_header header;
__le64 pinned_icaps;
__le64 total;
} __packed;
/* metric opened inodes header */
struct ceph_opened_inodes {
struct ceph_metric_header header;
__le64 opened_inodes;
__le64 total;
} __packed;
/* metric read io size header */
struct ceph_read_io_size {
struct ceph_metric_header header;
__le64 total_ops;
__le64 total_size;
} __packed;
/* metric write io size header */
struct ceph_write_io_size {
struct ceph_metric_header header;
__le64 total_ops;
__le64 total_size;
} __packed;
struct ceph_metric_head {
__le32 num; /* the number of metrics that will be sent */
} __packed;
enum metric_type {
METRIC_READ,
METRIC_WRITE,
METRIC_METADATA,
METRIC_COPYFROM,
METRIC_MAX
};
struct ceph_metric {
spinlock_t lock;
u64 total;
u64 size_sum;
u64 size_min;
u64 size_max;
ktime_t latency_sum;
ktime_t latency_avg;
ktime_t latency_sq_sum;
ktime_t latency_min;
ktime_t latency_max;
};
/* This is the global metrics */
struct ceph_client_metric {
atomic64_t total_dentries;
struct percpu_counter d_lease_hit;
struct percpu_counter d_lease_mis;
atomic64_t total_caps;
struct percpu_counter i_caps_hit;
struct percpu_counter i_caps_mis;
struct ceph_metric metric[METRIC_MAX];
/* The total number of directories and files that are opened */
atomic64_t opened_files;
/* The total number of inodes that have opened files or directories */
struct percpu_counter opened_inodes;
struct percpu_counter total_inodes;
struct ceph_mds_session *session;
struct delayed_work delayed_work; /* delayed work */
};
static inline void metric_schedule_delayed(struct ceph_client_metric *m)
{
if (disable_send_metrics)
return;
/* per second */
schedule_delayed_work(&m->delayed_work, round_jiffies_relative(HZ));
}
extern int ceph_metric_init(struct ceph_client_metric *m);
extern void ceph_metric_destroy(struct ceph_client_metric *m);
static inline void ceph_update_cap_hit(struct ceph_client_metric *m)
{
percpu_counter_inc(&m->i_caps_hit);
}
static inline void ceph_update_cap_mis(struct ceph_client_metric *m)
{
percpu_counter_inc(&m->i_caps_mis);
}
extern void ceph_update_metrics(struct ceph_metric *m,
ktime_t r_start, ktime_t r_end,
unsigned int size, int rc);
static inline void ceph_update_read_metrics(struct ceph_client_metric *m,
ktime_t r_start, ktime_t r_end,
unsigned int size, int rc)
{
ceph_update_metrics(&m->metric[METRIC_READ],
r_start, r_end, size, rc);
}
static inline void ceph_update_write_metrics(struct ceph_client_metric *m,
ktime_t r_start, ktime_t r_end,
unsigned int size, int rc)
{
ceph_update_metrics(&m->metric[METRIC_WRITE],
r_start, r_end, size, rc);
}
static inline void ceph_update_metadata_metrics(struct ceph_client_metric *m,
ktime_t r_start, ktime_t r_end,
int rc)
{
ceph_update_metrics(&m->metric[METRIC_METADATA],
r_start, r_end, 0, rc);
}
static inline void ceph_update_copyfrom_metrics(struct ceph_client_metric *m,
ktime_t r_start, ktime_t r_end,
unsigned int size, int rc)
{
ceph_update_metrics(&m->metric[METRIC_COPYFROM],
r_start, r_end, size, rc);
}
#endif /* _FS_CEPH_MDS_METRIC_H */