gecko-dev/db/db_stat/db_stat.c

630 строки
16 KiB
C

/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1996, 1997, 1998
* Sleepycat Software. All rights reserved.
*/
#include "config.h"
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1996, 1997, 1998\n\
Sleepycat Software Inc. All rights reserved.\n";
static const char sccsid[] = "@(#)db_stat.c 8.38 (Sleepycat) 5/30/98";
#endif
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <ctype.h>
#include <errno.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#endif
#include "db_int.h"
#include "shqueue.h"
#include "db_shash.h"
#include "lock.h"
#include "mp.h"
#include "clib_ext.h"
typedef enum { T_NOTSET, T_DB, T_LOCK, T_LOG, T_MPOOL, T_TXN } test_t;
int argcheck __P((char *, const char *));
void btree_stats __P((DB *));
DB_ENV *db_init __P((char *, test_t));
void dl __P((const char *, u_long));
void hash_stats __P((DB *));
int lock_ok __P((char *));
void lock_stats __P((DB_ENV *));
void log_stats __P((DB_ENV *));
int main __P((int, char *[]));
int mpool_ok __P((char *));
void mpool_stats __P((DB_ENV *));
void onint __P((int));
void prflags __P((u_int32_t, const FN *));
int txn_compare __P((const void *, const void *));
void txn_stats __P((DB_ENV *));
void usage __P((void));
int interrupted;
char *internal;
const char
*progname = "db_stat"; /* Program name. */
int
main(argc, argv)
int argc;
char *argv[];
{
extern char *optarg;
extern int optind;
DB *dbp;
DB_ENV *dbenv;
test_t ttype;
int ch;
char *db, *home;
ttype = T_NOTSET;
db = home = NULL;
while ((ch = getopt(argc, argv, "C:cd:h:lM:mNt")) != EOF)
switch (ch) {
case 'C':
ttype = T_LOCK;
if (!argcheck(internal = optarg, "Acflmo"))
usage();
break;
case 'c':
ttype = T_LOCK;
break;
case 'd':
db = optarg;
ttype = T_DB;
break;
case 'h':
home = optarg;
break;
case 'l':
ttype = T_LOG;
break;
case 'M':
ttype = T_MPOOL;
if (!argcheck(internal = optarg, "Ahlm"))
usage();
break;
case 'm':
ttype = T_MPOOL;
break;
case 'N':
(void)db_value_set(0, DB_MUTEXLOCKS);
break;
case 't':
ttype = T_TXN;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 0 || ttype == T_NOTSET)
usage();
dbenv = db_init(home, ttype);
(void)signal(SIGINT, onint);
switch (ttype) {
case T_DB:
if ((errno = db_open(db, DB_UNKNOWN,
DB_RDONLY, 0, dbenv, NULL, &dbp)) != 0)
return (1);
switch (dbp->type) {
case DB_BTREE:
case DB_RECNO:
btree_stats(dbp);
break;
case DB_HASH:
hash_stats(dbp);
break;
case DB_UNKNOWN:
abort(); /* Impossible. */
/* NOTREACHED */
}
(void)dbp->close(dbp, 0);
break;
case T_LOCK:
lock_stats(dbenv);
break;
case T_LOG:
log_stats(dbenv);
break;
case T_MPOOL:
mpool_stats(dbenv);
break;
case T_TXN:
txn_stats(dbenv);
break;
case T_NOTSET:
abort(); /* Impossible. */
/* NOTREACHED */
}
(void)db_appexit(dbenv);
if (interrupted) {
(void)signal(SIGINT, SIG_DFL);
(void)raise(SIGINT);
/* NOTREACHED */
}
return (0);
}
/*
* btree_stats --
* Display btree/recno statistics.
*/
void
btree_stats(dbp)
DB *dbp;
{
static const FN fn[] = {
{ DB_DUP, "DB_DUP" },
{ DB_FIXEDLEN, "DB_FIXEDLEN" },
{ DB_RECNUM, "DB_RECNUM" },
{ DB_RENUMBER, "DB_RENUMBER" },
{ 0 }
};
DB_BTREE_STAT *sp;
if (dbp->stat(dbp, &sp, NULL, 0))
err(1, "dbp->stat");
#define PCT(f, t) \
(t == 0 ? 0 : \
(((double)((t * sp->bt_pagesize) - f) / (t * sp->bt_pagesize)) * 100))
printf("%#lx\tBtree magic number.\n", (u_long)sp->bt_magic);
printf("%lu\tBtree version number.\n", (u_long)sp->bt_version);
prflags(sp->bt_flags, fn);
if (dbp->type == DB_BTREE) {
#ifdef NOT_IMPLEMENTED
dl("Maximum keys per-page.\n", (u_long)sp->bt_maxkey);
#endif
dl("Minimum keys per-page.\n", (u_long)sp->bt_minkey);
}
if (dbp->type == DB_RECNO) {
dl("Fixed-length record size.\n", (u_long)sp->bt_re_len);
if (isprint(sp->bt_re_pad))
printf("%c\tFixed-length record pad.\n",
(int)sp->bt_re_pad);
else
printf("0x%x\tFixed-length record pad.\n",
(int)sp->bt_re_pad);
}
dl("Underlying tree page size.\n", (u_long)sp->bt_pagesize);
dl("Number of levels in the tree.\n", (u_long)sp->bt_levels);
dl("Number of keys in the tree.\n", (u_long)sp->bt_nrecs);
dl("Number of tree internal pages.\n", (u_long)sp->bt_int_pg);
dl("Number of tree leaf pages.\n", (u_long)sp->bt_leaf_pg);
dl("Number of tree duplicate pages.\n", (u_long)sp->bt_dup_pg);
dl("Number of tree overflow pages.\n", (u_long)sp->bt_over_pg);
dl("Number of pages on the free list.\n", (u_long)sp->bt_free);
dl("Number of pages freed for reuse.\n", (u_long)sp->bt_freed);
dl("Number of bytes free in tree internal pages",
(u_long)sp->bt_int_pgfree);
printf(" (%.0f%% ff).\n", PCT(sp->bt_int_pgfree, sp->bt_int_pg));
dl("Number of bytes free in tree leaf pages",
(u_long)sp->bt_leaf_pgfree);
printf(" (%.0f%% ff).\n", PCT(sp->bt_leaf_pgfree, sp->bt_leaf_pg));
dl("Number of bytes free in tree duplicate pages",
(u_long)sp->bt_dup_pgfree);
printf(" (%.0f%% ff).\n", PCT(sp->bt_dup_pgfree, sp->bt_dup_pg));
dl("Number of bytes free in tree overflow pages",
(u_long)sp->bt_over_pgfree);
printf(" (%.0f%% ff).\n", PCT(sp->bt_over_pgfree, sp->bt_over_pg));
dl("Number of bytes saved by prefix compression.\n",
(u_long)sp->bt_pfxsaved);
dl("Total number of tree page splits.\n", (u_long)sp->bt_split);
dl("Number of root page splits.\n", (u_long)sp->bt_rootsplit);
dl("Number of fast splits.\n", (u_long)sp->bt_fastsplit);
dl("Number of hits in tree fast-insert code.\n",
(u_long)sp->bt_cache_hit);
dl("Number of misses in tree fast-insert code.\n",
(u_long)sp->bt_cache_miss);
dl("Number of keys added.\n", (u_long)sp->bt_added);
dl("Number of keys deleted.\n", (u_long)sp->bt_deleted);
}
/*
* hash_stats --
* Display hash statistics.
*/
void
hash_stats(dbp)
DB *dbp;
{
COMPQUIET(dbp, NULL);
printf("Hash statistics not currently available.\n");
return;
}
/*
* lock_stats --
* Display lock statistics.
*/
void
lock_stats(dbenv)
DB_ENV *dbenv;
{
DB_LOCK_STAT *sp;
if (internal != NULL) {
__lock_dump_region(dbenv->lk_info, internal, stdout);
return;
}
if (lock_stat(dbenv->lk_info, &sp, NULL))
err(1, NULL);
printf("%#lx\tLock magic number.\n", (u_long)sp->st_magic);
printf("%lu\tLock version number.\n", (u_long)sp->st_version);
dl("Lock region reference count.\n", (u_long)sp->st_refcnt);
dl("Lock region size.\n", (u_long)sp->st_regsize);
dl("Maximum number of locks.\n", (u_long)sp->st_maxlocks);
dl("Number of lock modes.\n", (u_long)sp->st_nmodes);
dl("Number of lock objects.\n", (u_long)sp->st_numobjs);
dl("Number of lockers.\n", (u_long)sp->st_nlockers);
dl("Number of lock conflicts.\n", (u_long)sp->st_nconflicts);
dl("Number of lock requests.\n", (u_long)sp->st_nrequests);
dl("Number of lock releases.\n", (u_long)sp->st_nreleases);
dl("Number of deadlocks.\n", (u_long)sp->st_ndeadlocks);
dl("The number of region locks granted without waiting.\n",
(u_long)sp->st_region_nowait);
dl("The number of region locks granted after waiting.\n",
(u_long)sp->st_region_wait);
}
/*
* log_stats --
* Display log statistics.
*/
void
log_stats(dbenv)
DB_ENV *dbenv;
{
DB_LOG_STAT *sp;
if (log_stat(dbenv->lg_info, &sp, NULL))
err(1, NULL);
printf("%#lx\tLog magic number.\n", (u_long)sp->st_magic);
printf("%lu\tLog version number.\n", (u_long)sp->st_version);
dl("Log region reference count.\n", (u_long)sp->st_refcnt);
dl("Log region size.\n", (u_long)sp->st_regsize);
printf("%#o\tLog file mode.\n", sp->st_mode);
if (sp->st_lg_max % MEGABYTE == 0)
printf("%luMb\tLog file size.\n",
(u_long)sp->st_lg_max / MEGABYTE);
else if (sp->st_lg_max % 1024 == 0)
printf("%luKb\tLog file size.\n", (u_long)sp->st_lg_max / 1024);
else
printf("%lu\tLog file size.\n", (u_long)sp->st_lg_max);
printf("%luMb\tLog bytes written (+%lu bytes).\n",
(u_long)sp->st_w_mbytes, (u_long)sp->st_w_bytes);
printf("%luMb\tLog bytes written since last checkpoint (+%lu bytes).\n",
(u_long)sp->st_wc_mbytes, (u_long)sp->st_wc_bytes);
dl("Total log file writes.\n", (u_long)sp->st_wcount);
dl("Total log file flushes.\n", (u_long)sp->st_scount);
printf("%lu\tCurrent log file number.\n", (u_long)sp->st_cur_file);
printf("%lu\tCurrent log file offset.\n", (u_long)sp->st_cur_offset);
dl("The number of region locks granted without waiting.\n",
(u_long)sp->st_region_nowait);
dl("The number of region locks granted after waiting.\n",
(u_long)sp->st_region_wait);
}
/*
* mpool_stats --
* Display mpool statistics.
*/
void
mpool_stats(dbenv)
DB_ENV *dbenv;
{
DB_MPOOL_FSTAT **fsp;
DB_MPOOL_STAT *gsp;
if (internal != NULL) {
__memp_dump_region(dbenv->mp_info, internal, stdout);
return;
}
if (memp_stat(dbenv->mp_info, &gsp, &fsp, NULL))
err(1, NULL);
dl("Pool region reference count.\n", (u_long)gsp->st_refcnt);
dl("Pool region size.\n", (u_long)gsp->st_regsize);
dl("Cache size", (u_long)gsp->st_cachesize);
printf(" (%luK).\n", (u_long)gsp->st_cachesize / 1024);
dl("Requested pages found in the cache", (u_long)gsp->st_cache_hit);
if (gsp->st_cache_hit + gsp->st_cache_miss != 0)
printf(" (%.0f%%)", ((double)gsp->st_cache_hit /
(gsp->st_cache_hit + gsp->st_cache_miss)) * 100);
printf(".\n");
dl("Requested pages mapped into the process' address space.\n",
(u_long)gsp->st_map);
dl("Requested pages not found in the cache.\n",
(u_long)gsp->st_cache_miss);
dl("Pages created in the cache.\n", (u_long)gsp->st_page_create);
dl("Pages read into the cache.\n", (u_long)gsp->st_page_in);
dl("Pages written from the cache to the backing file.\n",
(u_long)gsp->st_page_out);
dl("Clean pages forced from the cache.\n",
(u_long)gsp->st_ro_evict);
dl("Dirty pages forced from the cache.\n",
(u_long)gsp->st_rw_evict);
dl("Dirty buffers written by trickle-sync thread.\n",
(u_long)gsp->st_page_trickle);
dl("Current clean buffer count.\n",
(u_long)gsp->st_page_clean);
dl("Current dirty buffer count.\n",
(u_long)gsp->st_page_dirty);
dl("Number of hash buckets used for page location.\n",
(u_long)gsp->st_hash_buckets);
dl("Total number of times hash chains searched for a page.\n",
(u_long)gsp->st_hash_searches);
dl("The longest hash chain searched for a page.\n",
(u_long)gsp->st_hash_longest);
dl("Total number of hash buckets examined for page location.\n",
(u_long)gsp->st_hash_examined);
dl("The number of region locks granted without waiting.\n",
(u_long)gsp->st_region_nowait);
dl("The number of region locks granted after waiting.\n",
(u_long)gsp->st_region_wait);
for (; fsp != NULL && *fsp != NULL; ++fsp) {
printf("%s\n", DB_LINE);
printf("%s\n", (*fsp)->file_name);
dl("Page size.\n", (u_long)(*fsp)->st_pagesize);
dl("Requested pages found in the cache",
(u_long)(*fsp)->st_cache_hit);
if ((*fsp)->st_cache_hit + (*fsp)->st_cache_miss != 0)
printf(" (%.0f%%)", ((double)(*fsp)->st_cache_hit /
((*fsp)->st_cache_hit + (*fsp)->st_cache_miss)) *
100);
printf(".\n");
dl("Requested pages mapped into the process' address space.\n",
(u_long)(*fsp)->st_map);
dl("Requested pages not found in the cache.\n",
(u_long)(*fsp)->st_cache_miss);
dl("Pages created in the cache.\n",
(u_long)(*fsp)->st_page_create);
dl("Pages read into the cache.\n",
(u_long)(*fsp)->st_page_in);
dl("Pages written from the cache to the backing file.\n",
(u_long)(*fsp)->st_page_out);
}
}
/*
* txn_stats --
* Display transaction statistics.
*/
void
txn_stats(dbenv)
DB_ENV *dbenv;
{
DB_TXN_STAT *sp;
u_int32_t i;
const char *p;
if (txn_stat(dbenv->tx_info, &sp, NULL))
err(1, NULL);
dl("Txn region reference count.\n", (u_long)sp->st_refcnt);
dl("Txn region size.\n", (u_long)sp->st_regsize);
p = sp->st_last_ckp.file == 0 ?
"No checkpoint LSN." : "File/offset for last checkpoint LSN.";
printf("%lu/%lu\t%s\n",
(u_long)sp->st_last_ckp.file, (u_long)sp->st_last_ckp.offset, p);
p = sp->st_pending_ckp.file == 0 ?
"No pending checkpoint LSN." :
"File/offset for last pending checkpoint LSN.";
printf("%lu/%lu\t%s\n",
(u_long)sp->st_pending_ckp.file,
(u_long)sp->st_pending_ckp.offset, p);
if (sp->st_time_ckp == 0)
printf("0\tNo checkpoint timestamp.\n");
else
printf("%.24s\tCheckpoint timestamp.\n",
ctime(&sp->st_time_ckp));
printf("%lx\tLast transaction ID allocated.\n",
(u_long)sp->st_last_txnid);
dl("Maximum number of active transactions.\n", (u_long)sp->st_maxtxns);
dl("Number of transactions begun.\n", (u_long)sp->st_nbegins);
dl("Number of transactions aborted.\n", (u_long)sp->st_naborts);
dl("Number of transactions committed.\n", (u_long)sp->st_ncommits);
dl("The number of region locks granted without waiting.\n",
(u_long)sp->st_region_nowait);
dl("The number of region locks granted after waiting.\n",
(u_long)sp->st_region_wait);
dl("Active transactions.\n", (u_long)sp->st_nactive);
qsort(sp->st_txnarray,
sp->st_nactive, sizeof(sp->st_txnarray[0]), txn_compare);
for (i = 0; i < sp->st_nactive; ++i)
printf("\tid: %lx; initial LSN file/offest %lu/%lu\n",
(u_long)sp->st_txnarray[i].txnid,
(u_long)sp->st_txnarray[i].lsn.file,
(u_long)sp->st_txnarray[i].lsn.offset);
}
int
txn_compare(a1, b1)
const void *a1, *b1;
{
const DB_TXN_ACTIVE *a, *b;
a = a1;
b = b1;
if (a->txnid > b->txnid)
return (1);
if (a->txnid < b->txnid)
return (-1);
return (0);
}
/*
* dl --
* Display a big value.
*/
void
dl(msg, value)
const char *msg;
u_long value;
{
/*
* Two formats: if less than 10 million, display as the number, if
* greater than 10 million display as ###M.
*/
if (value < 10000000)
printf("%lu\t%s", value, msg);
else
printf("%luM\t%s", value / 1000000, msg);
}
/*
* prflags --
* Print out flag values.
*/
void
prflags(flags, fnp)
u_int32_t flags;
const FN *fnp;
{
const char *sep;
sep = " ";
printf("Flags:");
for (; fnp->mask != 0; ++fnp)
if (fnp->mask & flags) {
printf("%s%s", sep, fnp->name);
sep = ", ";
}
printf("\n");
}
/*
* db_init --
* Initialize the environment.
*/
DB_ENV *
db_init(home, ttype)
char *home;
test_t ttype;
{
DB_ENV *dbenv;
u_int32_t flags;
if ((dbenv = (DB_ENV *)malloc(sizeof(DB_ENV))) == NULL) {
errno = ENOMEM;
err(1, NULL);
}
/*
* Try and use the shared regions when reporting statistics on the
* DB databases, so our information is as up-to-date as possible,
* even if the mpool cache hasn't been flushed. If that fails, we
* turn off the DB_INIT_MPOOL flag and try again.
*/
flags = DB_USE_ENVIRON;
switch (ttype) {
case T_DB:
case T_MPOOL:
LF_SET(DB_INIT_MPOOL);
break;
case T_LOCK:
LF_SET(DB_INIT_LOCK);
break;
case T_LOG:
LF_SET(DB_INIT_LOG);
break;
case T_TXN:
LF_SET(DB_INIT_TXN);
break;
case T_NOTSET:
abort();
/* NOTREACHED */
}
/*
* If it works, we're done. Set the error output options so that
* future errors are correctly reported.
*/
memset(dbenv, 0, sizeof(*dbenv));
if ((errno = db_appinit(home, NULL, dbenv, flags)) == 0) {
dbenv->db_errfile = stderr;
dbenv->db_errpfx = progname;
return (dbenv);
}
/* Turn off the DB_INIT_MPOOL flag if it's a database. */
if (ttype == T_DB)
LF_CLR(DB_INIT_MPOOL);
/* Set the error output options -- this time we want a message. */
memset(dbenv, 0, sizeof(*dbenv));
dbenv->db_errfile = stderr;
dbenv->db_errpfx = progname;
/* Try again, and it's fatal if we fail. */
if ((errno = db_appinit(home, NULL, dbenv, flags)) != 0)
err(1, "db_appinit");
return (dbenv);
}
/*
* argcheck --
* Return if argument flags are okay.
*/
int
argcheck(arg, ok_args)
char *arg;
const char *ok_args;
{
for (; *arg != '\0'; ++arg)
if (strchr(ok_args, *arg) == NULL)
return (0);
return (1);
}
/*
* oninit --
* Interrupt signal handler.
*/
void
onint(signo)
int signo;
{
COMPQUIET(signo, 0);
interrupted = 1;
}
void
usage()
{
fprintf(stderr,
"usage: db_stat [-clmNt] [-C Acflmo] [-d file] [-h home] [-M Ahlm]\n");
exit (1);
}