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Tweak output, add free page info

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This commit is contained in:
Howard Chu 2012-10-16 16:52:13 -07:00
parent 754cd88819
commit 617769bce5
3 changed files with 62 additions and 19 deletions
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3
libraries/libmdb/mdb.c
View file

@ -6660,11 +6660,12 @@ mdb_env_info(MDB_env *env, MDB_envinfo *arg)
return EINVAL;
toggle = mdb_env_pick_meta(env);
arg->me_mapaddr = (env->me_flags & MDB_FIXEDMAP) ? env->me_map : 0;
arg->me_mapsize = env->me_mapsize;
arg->me_maxreaders = env->me_maxreaders;
arg->me_numreaders = env->me_numreaders;
arg->me_last_txnid = env->me_metas[toggle]->mm_txnid;
arg->me_last_pgno = env->me_metas[toggle]->mm_last_pg;
arg->me_last_txnid = env->me_metas[toggle]->mm_txnid;
return MDB_SUCCESS;
}

3
libraries/libmdb/mdb.h
View file

@ -360,9 +360,10 @@ typedef struct MDB_stat {
/** @brief Information about the environment */
typedef struct MDB_envinfo {
void *me_mapaddr; /**< Address of map, if fixed */
size_t me_mapsize; /**< Size of the data memory map */
size_t me_last_txnid; /**< ID of the last committed transaction */
size_t me_last_pgno; /**< ID of the last used page */
size_t me_last_txnid; /**< ID of the last committed transaction */
unsigned int me_maxreaders; /**< maximum number of threads for the environment */
unsigned int me_numreaders; /**< maximum number of threads used in the environment */
} MDB_envinfo;

75
libraries/libmdb/mdb_stat.c
View file

@ -19,17 +19,19 @@
static void prstat(MDB_stat *ms)
{
printf("Page size: %u\n", ms->ms_psize);
printf("Tree depth: %u\n", ms->ms_depth);
printf("Branch pages: %zu\n", ms->ms_branch_pages);
printf("Leaf pages: %zu\n", ms->ms_leaf_pages);
printf("Overflow pages: %zu\n", ms->ms_overflow_pages);
printf("Entries: %zu\n", ms->ms_entries);
#if 0
printf(" Page size: %u\n", ms->ms_psize);
#endif
printf(" Tree depth: %u\n", ms->ms_depth);
printf(" Branch pages: %zu\n", ms->ms_branch_pages);
printf(" Leaf pages: %zu\n", ms->ms_leaf_pages);
printf(" Overflow pages: %zu\n", ms->ms_overflow_pages);
printf(" Entries: %zu\n", ms->ms_entries);
}
static void usage(char *prog)
{
fprintf(stderr, "usage: %s dbpath [-a|-s subdb]\n", prog);
fprintf(stderr, "usage: %s dbpath [-e] [-f] [-n] [-a|-s subdb]\n", prog);
exit(EXIT_FAILURE);
}
@ -44,7 +46,7 @@ int main(int argc, char *argv[])
char *prog = argv[0];
char *envname;
char *subname = NULL;
int alldbs = 0, envinfo = 0;
int alldbs = 0, envinfo = 0, envflags = 0, freinfo = 0;
if (argc < 2) {
usage(prog);
@ -53,9 +55,11 @@ int main(int argc, char *argv[])
/* -a: print stat of main DB and all subDBs
* -s: print stat of only the named subDB
* -e: print env info
* -f: print freelist info
* -n: use NOSUBDIR flag on env_open
* (default) print stat of only the main DB
*/
while ((i = getopt(argc, argv, "aes:")) != EOF) {
while ((i = getopt(argc, argv, "aefns:")) != EOF) {
switch(i) {
case 'a':
alldbs++;
@ -63,11 +67,16 @@ int main(int argc, char *argv[])
case 'e':
envinfo++;
break;
case 'f':
freinfo++;
break;
case 'n':
envflags |= MDB_NOSUBDIR;
break;
case 's':
subname = optarg;
break;
default:
fprintf(stderr, "%s: unrecognized option -%c\n", prog, optopt);
usage(prog);
}
}
@ -82,7 +91,7 @@ int main(int argc, char *argv[])
mdb_env_set_maxdbs(env, 4);
}
rc = mdb_env_open(env, envname, MDB_RDONLY, 0664);
rc = mdb_env_open(env, envname, envflags | MDB_RDONLY, 0664);
if (rc) {
printf("mdb_env_open failed, error %d %s\n", rc, mdb_strerror(rc));
goto env_close;
@ -94,12 +103,43 @@ int main(int argc, char *argv[])
}
if (envinfo) {
rc = mdb_env_stat(env, &mst);
rc = mdb_env_info(env, &mei);
printf("Map size: %zu \n", mei.me_mapsize);
printf("Last transaction ID: %zu\n", mei.me_last_txnid);
printf("Last page used: %zu\n", mei.me_last_pgno);
printf("Max readers: %u\n", mei.me_maxreaders);
printf("Number of readers used: %u\n", mei.me_numreaders);
printf("Environment Info\n");
printf(" Map address: %p\n", mei.me_mapaddr);
printf(" Map size: %zu\n", mei.me_mapsize);
printf(" Page size: %u\n", mst.ms_psize);
printf(" Max pages: %zu\n", mei.me_mapsize / mst.ms_psize);
printf(" Number of pages used: %zu\n", mei.me_last_pgno+1);
printf(" Last transaction ID: %zu\n", mei.me_last_txnid);
printf(" Max readers: %u\n", mei.me_maxreaders);
printf(" Number of readers used: %u\n", mei.me_numreaders);
}
if (freinfo) {
MDB_cursor *cursor;
MDB_val data;
size_t pages = 0, *iptr;
printf("Freelist Status\n");
dbi = 0;
rc = mdb_cursor_open(txn, dbi, &cursor);
if (rc) {
printf("mdb_cursor_open failed, error %d %s\n", rc, mdb_strerror(rc));
goto txn_abort;
}
rc = mdb_stat(txn, dbi, &mst);
if (rc) {
printf("mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc));
goto txn_abort;
}
while ((rc = mdb_cursor_get(cursor, NULL, &data, MDB_NEXT)) == 0) {
iptr = data.mv_data;
pages += *iptr;
}
mdb_cursor_close(cursor);
prstat(&mst);
printf(" Free pages: %zu\n", pages);
}
rc = mdb_open(txn, subname, 0, &dbi);
@ -113,6 +153,7 @@ int main(int argc, char *argv[])
printf("mdb_stat failed, error %d %s\n", rc, mdb_strerror(rc));
goto txn_abort;
}
printf("Status of %s\n", subname ? subname : "Main DB");
prstat(&mst);
if (alldbs) {
@ -131,7 +172,7 @@ int main(int argc, char *argv[])
str[key.mv_size] = '\0';
rc = mdb_open(txn, str, 0, &db2);
if (rc == MDB_SUCCESS)
printf("\n%s\n", str);
printf("Status of %s\n", str);
free(str);
if (rc) continue;
rc = mdb_stat(txn, db2, &mst);