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/*
* GFS2 gfs2_glock_lock_time trace-point metrics.
*
* Copyright (c) 2013 - 2014 Red Hat.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#ifndef LOCK_TIME_H
#define LOCK_TIME_H
#define COUNT_THRESHOLD 350
#define DEFAULT_WORST_GLOCK_STATE 1
#define WORST_GLOCK_TOP 10
#define WORST_GLOCK_COUNT (NUM_GLOCKSTATS*NUM_TOPNUM)
enum {
WORSTGLOCK_LOCK_TYPE = 0,
WORSTGLOCK_NUMBER,
WORSTGLOCK_SRTT,
WORSTGLOCK_SRTTVAR,
WORSTGLOCK_SRTTB,
WORSTGLOCK_SRTTVARB,
WORSTGLOCK_SIRT,
WORSTGLOCK_SIRTVAR,
WORSTGLOCK_DLM,
WORSTGLOCK_QUEUE,
NUM_GLOCKSTATS
};
enum {
WORSTGLOCK_TRANS = 1,
WORSTGLOCK_INODE = 2,
WORSTGLOCK_RGRP = 3,
WORSTGLOCK_META = 4,
WORSTGLOCK_IOPEN = 5,
WORSTGLOCK_FLOCK = 6,
WORSTGLOCK_RESERVED = 7,
WORSTGLOCK_QUOTA = 8,
WORSTGLOCK_JOURNAL = 9
};
enum {
TOPNUM_FIRST = 0,
TOPNUM_SECOND,
TOPNUM_THIRD,
TOPNUM_FOURTH,
TOPNUM_FIFTH,
TOPNUM_SIXTH,
TOPNUM_SEVENTH,
TOPNUM_EIGHTH,
TOPNUM_NINTH,
TOPNUM_TENTH,
NUM_TOPNUM
};
struct glock {
dev_t dev_id;
uint32_t lock_type; /* Glock type number */
uint64_t number; /* Inode or resource group number */
int64_t srtt; /* Non blocking smoothed round trip time */
int64_t srttvar; /* Non blocking smoothed variance */
int64_t srttb; /* Blocking smoothed round trip time */
int64_t srttvarb; /* Blocking smoothed variance */
int64_t sirt; /* Smoothed Inter-request time */
int64_t sirtvar; /* Smoothed Inter-request variance */
int64_t dlm; /* Count of dlm requests */
int64_t queue; /* Count of gfs2_holder queues */
};
struct worst_glock {
struct glock glocks[WORST_GLOCK_TOP + 1];
int assigned_entries;
};
extern void gfs2_worst_glock_init(pmdaMetric *, int);
extern int gfs2_worst_glock_fetch(int, struct worst_glock *, pmAtomValue *);
extern int gfs2_extract_worst_glock(char **, pmInDom);
extern int worst_glock_get_state();
extern int worst_glock_set_state(pmValueSet *vsp);
#endif /* LOCK_TIME_H */
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