143 lines
4.4 KiB
C
143 lines
4.4 KiB
C
/* pg_autovacuum.h
|
|
* Header file for pg_autovacuum.c
|
|
* (c) 2003 Matthew T. O'Connor
|
|
*/
|
|
|
|
#include "postgres_fe.h"
|
|
|
|
#include <unistd.h>
|
|
#ifdef HAVE_GETOPT_H
|
|
#include <getopt.h>
|
|
#endif
|
|
#include <time.h>
|
|
#include <sys/time.h>
|
|
|
|
/* These next two lines are correct when pg_autovaccum is compiled
|
|
from within the postgresql source tree */
|
|
#include "libpq-fe.h"
|
|
#include "lib/dllist.h"
|
|
/* Had to change the last two lines to compile on
|
|
Redhat outside of postgresql source tree */
|
|
/*
|
|
#include "/usr/include/libpq-fe.h"
|
|
#include "/usr/include/pgsql/server/lib/dllist.h"
|
|
*/
|
|
|
|
#define AUTOVACUUM_DEBUG 1
|
|
#define VACBASETHRESHOLD 1000
|
|
#define VACSCALINGFACTOR 2
|
|
#define SLEEPBASEVALUE 300
|
|
#define SLEEPSCALINGFACTOR 2
|
|
#define UPDATE_INTERVAL 2
|
|
|
|
/* these two constants are used to tell update_table_stats what operation we just perfomred */
|
|
#define VACUUM_ANALYZE 0
|
|
#define ANALYZE_ONLY 1
|
|
|
|
#define TABLE_STATS_QUERY "select a.oid,a.relname,a.relnamespace,a.relpages,a.relisshared,a.reltuples,b.schemaname,b.n_tup_ins,b.n_tup_upd,b.n_tup_del from pg_class a, pg_stat_all_tables b where a.oid=b.relid and a.relkind = 'r' and schemaname not like 'pg_temp_%'"
|
|
|
|
#define FRONTEND
|
|
#define PAGES_QUERY "select oid,reltuples,relpages from pg_class where oid=%u"
|
|
#define FROZENOID_QUERY "select oid,age(datfrozenxid) from pg_database where datname = 'template1'"
|
|
#define FROZENOID_QUERY2 "select oid,datname,age(datfrozenxid) from pg_database where datname!='template0'"
|
|
|
|
/* define atooid */
|
|
#define atooid(x) ((Oid) strtoul((x), NULL, 10))
|
|
|
|
/* define cmd_args stucture */
|
|
struct cmdargs
|
|
{
|
|
int vacuum_base_threshold,
|
|
analyze_base_threshold,
|
|
sleep_base_value,
|
|
debug,
|
|
daemonize;
|
|
float vacuum_scaling_factor,
|
|
analyze_scaling_factor,
|
|
sleep_scaling_factor;
|
|
char *user,
|
|
*password,
|
|
*host,
|
|
*logfile,
|
|
*port;
|
|
};
|
|
typedef struct cmdargs cmd_args;
|
|
|
|
/* define cmd_args as global so we can get to them everywhere */
|
|
cmd_args *args;
|
|
|
|
/* Might need to add a time value for last time the whold database was vacuumed.
|
|
I think we need to guarantee this happens approx every 1Million TX's */
|
|
struct dbinfo
|
|
{
|
|
Oid oid;
|
|
long age;
|
|
long analyze_threshold,
|
|
vacuum_threshold; /* Use these as defaults for table
|
|
* thresholds */
|
|
PGconn *conn;
|
|
char *dbname,
|
|
*username,
|
|
*password;
|
|
Dllist *table_list;
|
|
};
|
|
typedef struct dbinfo db_info;
|
|
|
|
struct tableinfo
|
|
{
|
|
char *schema_name,
|
|
*table_name;
|
|
float reltuples;
|
|
int relisshared;
|
|
Oid relid,
|
|
relpages;
|
|
long analyze_threshold,
|
|
vacuum_threshold;
|
|
long CountAtLastAnalyze; /* equal to: inserts + updates as
|
|
* of the last analyze or initial
|
|
* values at startup */
|
|
long CountAtLastVacuum; /* equal to: deletes + updates as
|
|
* of the last vacuum or initial
|
|
* values at startup */
|
|
long curr_analyze_count,
|
|
curr_vacuum_count; /* Latest values from stats system */
|
|
db_info *dbi; /* pointer to the database that this table
|
|
* belongs to */
|
|
};
|
|
typedef struct tableinfo tbl_info;
|
|
|
|
/* Functions for dealing with command line arguements */
|
|
static cmd_args *get_cmd_args(int argc, char *argv[]);
|
|
static void print_cmd_args(void);
|
|
static void free_cmd_args(void);
|
|
static void usage(void);
|
|
|
|
/* Functions for managing database lists */
|
|
static Dllist *init_db_list(void);
|
|
static db_info *init_dbinfo(char *dbname, Oid oid, long age);
|
|
static void update_db_list(Dllist *db_list);
|
|
static void remove_db_from_list(Dlelem *db_to_remove);
|
|
static void print_db_info(db_info * dbi, int print_table_list);
|
|
static void print_db_list(Dllist *db_list, int print_table_lists);
|
|
static int xid_wraparound_check(db_info * dbi);
|
|
static void free_db_list(Dllist *db_list);
|
|
|
|
/* Functions for managing table lists */
|
|
static tbl_info *init_table_info(PGresult *conn, int row, db_info * dbi);
|
|
static void update_table_list(db_info * dbi);
|
|
static void remove_table_from_list(Dlelem *tbl_to_remove);
|
|
static void print_table_list(Dllist *tbl_node);
|
|
static void print_table_info(tbl_info * tbl);
|
|
static void update_table_thresholds(db_info * dbi, tbl_info * tbl, int vacuum_type);
|
|
static void free_tbl_list(Dllist *tbl_list);
|
|
|
|
/* A few database helper functions */
|
|
static int check_stats_enabled(db_info * dbi);
|
|
static PGconn *db_connect(db_info * dbi);
|
|
static void db_disconnect(db_info * dbi);
|
|
static PGresult *send_query(const char *query, db_info * dbi);
|
|
|
|
/* Other Generally needed Functions */
|
|
static void daemonize(void);
|
|
static void log_entry(const char *logentry);
|