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Commit 86f9dddc authored by Rich Prohaska's avatar Rich Prohaska Committed by Yoni Fogel
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add db-scan [t:1904] 

git-svn-id: file:///svn/toku/tokudb@13643 c7de825b-a66e-492c-adef-691d508d4ae1
parent 2f1d8cc8
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release/examples/db-scan/Makefile 0 → 100644
View file @ 86f9dddc
DIRSUF = db
CPPFLAGS = -I../include -DDIRSUF=$(DIRSUF)
LDFLAGS = -L../.. -lfractaltreeindex -Wl,-rpath,../..
default: db-scan
clean:
rm -rf db-scan bench.$(DIRSUF)
release/examples/db-scan/db-scan.c 0 → 100644
View file @ 86f9dddc
/* Scan the bench.tokudb/bench.db over and over. */
#define DONT_DEPRECATE_MALLOC
#include <inttypes.h>
#include <tokudb.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
const char *pname;
enum run_mode { RUN_HWC, RUN_LWC, RUN_VERIFY, RUN_HEAVI, RUN_RANGE} run_mode = RUN_HWC;
int do_txns=1, prelock=0, prelockflag=0;
u_int32_t lock_flag = 0;
long limitcount=-1;
u_int32_t cachesize = 127*1024*1024;
static int do_mysql = 0;
static u_int64_t start_range = 0, end_range = 0;
static int n_experiments = 2;
static int print_usage (const char *argv0) {
fprintf(stderr, "Usage:\n%s [--verify-lwc | --lwc | --nohwc] [--prelock] [--prelockflag] [--prelockwriteflag] [--env DIR]\n", argv0);
fprintf(stderr, " --hwc run heavy weight cursors (this is the default)\n");
fprintf(stderr, " --verify-lwc means to run the light weight cursor and the heavyweight cursor to verify that they get the same answer.\n");
fprintf(stderr, " --lwc run light weight cursors instead of heavy weight cursors\n");
fprintf(stderr, " --prelock acquire a read lock on the entire table before running\n");
fprintf(stderr, " --prelockflag pass DB_PRELOCKED to the the cursor get operation whenever the locks have been acquired\n");
fprintf(stderr, " --prelockwriteflag pass DB_PRELOCKED_WRITE to the cursor get operation\n");
fprintf(stderr, " --nox no transactions (no locking)\n");
fprintf(stderr, " --count <count> read the first COUNT rows and then stop.\n");
fprintf(stderr, " --cachesize <n> set the env cachesize to <n>\n");
fprintf(stderr, " --mysql compare keys that are mysql big int not null types\n");
fprintf(stderr, " --env DIR put db files in DIR instead of default\n");
return 1;
}
DB_ENV *env;
DB *db;
DB_TXN *tid=0;
#define STRINGIFY2(s) #s
#define STRINGIFY(s) STRINGIFY2(s)
const char *dbdir = "./bench." STRINGIFY(DIRSUF); /* DIRSUF is passed in as a -D argument to the compiler. */
int env_open_flags_yesx = DB_CREATE|DB_PRIVATE|DB_INIT_MPOOL|DB_INIT_TXN|DB_INIT_LOG|DB_INIT_LOCK;
int env_open_flags_nox = DB_CREATE|DB_PRIVATE|DB_INIT_MPOOL;
char *dbfilename = "bench.db";
static void parse_args (int argc, const char *argv[]) {
pname=argv[0];
argc--; argv++;
int specified_run_mode=0;
while (argc>0) {
if (strcmp(*argv,"--verify-lwc")==0) {
if (specified_run_mode && run_mode!=RUN_VERIFY) { two_modes: fprintf(stderr, "You specified two run modes\n"); exit(1); }
run_mode = RUN_VERIFY;
} else if (strcmp(*argv, "--lwc")==0) {
if (specified_run_mode && run_mode!=RUN_LWC) goto two_modes;
run_mode = RUN_LWC;
} else if (strcmp(*argv, "--hwc")==0) {
if (specified_run_mode && run_mode!=RUN_VERIFY) goto two_modes;
run_mode = RUN_HWC;
} else if (strcmp(*argv, "--prelock")==0) prelock=1;
#ifdef TOKUDB
else if (strcmp(*argv, "--heavi")==0) {
if (specified_run_mode && run_mode!=RUN_HEAVI) goto two_modes;
run_mode = RUN_HEAVI;
}
else if (strcmp(*argv, "--prelockflag")==0) { prelockflag=1; lock_flag = DB_PRELOCKED; }
else if (strcmp(*argv, "--prelockwriteflag")==0) { prelockflag=1; lock_flag = DB_PRELOCKED_WRITE; }
#endif
else if (strcmp(*argv, "--nox")==0) { do_txns=0; }
else if (strcmp(*argv, "--count")==0) {
char *end;
argc--; argv++;
errno=0; limitcount=strtol(*argv, &end, 10); assert(errno==0);
printf("Limiting count to %ld\n", limitcount);
} else if (strcmp(*argv, "--cachesize")==0 && argc>0) {
char *end;
argc--; argv++;
cachesize=(u_int32_t)strtol(*argv, &end, 10);
} else if (strcmp(*argv, "--env") == 0) {
argc--; argv++;
if (argc==0) exit(print_usage(pname));
dbdir = *argv;
} else if (strcmp(*argv, "--mysql") == 0) {
do_mysql = 1;
} else if (strcmp(*argv, "--range") == 0 && argc > 2) {
run_mode = RUN_RANGE;
argc--; argv++;
start_range = strtoll(*argv, NULL, 10);
argc--; argv++;
end_range = strtoll(*argv, NULL, 10);
} else if (strcmp(*argv, "--experiments") == 0 && argc > 1) {
argc--; argv++;
n_experiments = strtol(*argv, NULL, 10);
} else {
exit(print_usage(pname));
}
argc--; argv++;
}
//Prelocking is meaningless without transactions
if (do_txns==0) {
prelockflag=0;
lock_flag=0;
prelock=0;
}
}
static void scanscan_setup (void) {
int r;
r = db_env_create(&env, 0); assert(r==0);
r = env->set_cachesize(env, 0, cachesize, 1); assert(r==0);
r = env->open(env, dbdir, do_txns? env_open_flags_yesx : env_open_flags_nox, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH); assert(r==0);
r = db_create(&db, env, 0); assert(r==0);
if (do_txns) {
r = env->txn_begin(env, 0, &tid, 0); assert(r==0);
}
r = db->open(db, tid, dbfilename, NULL, DB_BTREE, 0, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH); assert(r==0);
#ifdef TOKUDB
if (prelock) {
r = db->pre_acquire_read_lock(db,
tid,
db->dbt_neg_infty(), db->dbt_neg_infty(),
db->dbt_pos_infty(), db->dbt_pos_infty());
assert(r==0);
}
#endif
}
static void scanscan_shutdown (void) {
int r;
r = db->close(db, 0); assert(r==0);
if (do_txns) {
r = tid->commit(tid, 0); assert(r==0);
}
r = env->close(env, 0); assert(r==0);
}
static double gettime (void) {
struct timeval tv;
int r = gettimeofday(&tv, 0);
assert(r==0);
return tv.tv_sec + 1e-6*tv.tv_usec;
}
static void scanscan_hwc (void) {
int r;
int counter=0;
for (counter=0; counter<n_experiments; counter++) {
long long totalbytes=0;
int rowcounter=0;
double prevtime = gettime();
DBT k,v;
DBC *dbc;
r = db->cursor(db, tid, &dbc, 0); assert(r==0);
memset(&k, 0, sizeof(k));
memset(&v, 0, sizeof(v));
u_int32_t c_get_flags = DB_NEXT;
if (prelockflag && (counter || prelock)) {
c_get_flags |= lock_flag;
}
while (0 == (r = dbc->c_get(dbc, &k, &v, c_get_flags))) {
totalbytes += k.size + v.size;
rowcounter++;
if (limitcount>0 && rowcounter>=limitcount) break;
}
r = dbc->c_close(dbc); assert(r==0);
double thistime = gettime();
double tdiff = thistime-prevtime;
printf("Scan %lld bytes (%d rows) in %9.6fs at %9fMB/s\n", totalbytes, rowcounter, tdiff, 1e-6*totalbytes/tdiff);
}
}
#ifdef TOKUDB
struct extra_count {
long long totalbytes;
int rowcounter;
};
static int counttotalbytes (DBT const *key, DBT const *data, void *extrav) {
struct extra_count *e=extrav;
e->totalbytes += key->size + data->size;
e->rowcounter++;
if (do_mysql && 0) {
static uint64_t expect_key = 0;
uint64_t k = mysql_get_bigint((unsigned char*)key->data+1);
if (k != expect_key)
printf("%s:%d %"PRIu64" %"PRIu64"\n", __FUNCTION__, __LINE__, k, expect_key);
expect_key = k + 1;
}
return 0;
}
static void scanscan_lwc (void) {
int r;
int counter=0;
for (counter=0; counter<n_experiments; counter++) {
struct extra_count e = {0,0};
double prevtime = gettime();
DBC *dbc;
r = db->cursor(db, tid, &dbc, 0); assert(r==0);
u_int32_t f_flags = 0;
if (prelockflag && (counter || prelock)) {
f_flags |= lock_flag;
}
long rowcounter=0;
while (0 == (r = dbc->c_getf_next(dbc, f_flags, counttotalbytes, &e))) {
rowcounter++;
if (limitcount>0 && rowcounter>=limitcount) break;
}
r = dbc->c_close(dbc); assert(r==0);
double thistime = gettime();
double tdiff = thistime-prevtime;
printf("LWC Scan %lld bytes (%d rows) in %9.6fs at %9fMB/s\n", e.totalbytes, e.rowcounter, tdiff, 1e-6*e.totalbytes/tdiff);
}
}
#endif
static void scanscan_range (void) {
int fnull = open("/dev/null", O_WRONLY); assert(fnull >= 0); // use with strace
int r;
double tstart = gettime();
DBC *dbc;
r = db->cursor(db, tid, &dbc, 0); assert(r==0);
int counter;
for (counter=0; counter<n_experiments; counter++) {
// generate a random key in the key range
u_int64_t k = (start_range + (random() % (end_range - start_range))) * (1<<6);
char kv[8];
int i;
for (i=0; i<8; i++)
kv[i] = k >> (56-8*i);
DBT key; memset(&key, 0, sizeof key); key.data = &kv, key.size = sizeof kv;
DBT val; memset(&val, 0, sizeof val);
// set the cursor to the random key
write(fnull, "s", 1);
r = dbc->c_get(dbc, &key, &val, DB_SET_RANGE+lock_flag); assert(r==0);
write(fnull, "e", 1);
#if 0
long rowcounter=0;
while (0 == (r = dbc->c_getf_next(dbc, f_flags, counttotalbytes, &e))) {
rowcounter++;
if (limitcount>0 && rowcounter>=limitcount) break;
}
#endif
}
r = dbc->c_close(dbc);
assert(r==0);
double tend = gettime();
double tdiff = tend-tstart;
printf("Range %d %f\n", n_experiments, tdiff);
close(fnull);
}
#ifdef TOKUDB
struct extra_heavi {
long long totalbytes;
int rowcounter;
DBT key;
DBT val;
};
static int
copy_dbt(DBT *target, DBT const *source) {
int r;
if (target->ulen < source->size) {
target->data = realloc(target->data, source->size);
target->ulen = source->size;
}
if (!target->data) r = ENOMEM;
else {
target->size = source->size;
memcpy(target->data, source->data, target->size);
r = 0;
}
return r;
}
typedef struct foo{int a; } FOO;
static int
heaviside_next(const DBT *key, const DBT *val, void *extra_h) {
struct extra_heavi *e=extra_h;
int cmp;
cmp = toku_default_compare_fun(db, key, &e->key);
if (cmp != 0) return cmp;
if (val) cmp = toku_default_compare_fun(db, val, &e->val);
if (cmp != 0) return cmp;
return -1; //Return negative on <=, positive on >
}
static int copy_and_counttotalbytes (DBT const *key, DBT const *val, void *extrav, int r_h) {
assert(r_h>0);
struct extra_heavi *e=extrav;
e->totalbytes += key->size + val->size;
e->rowcounter++;
int r;
r = copy_dbt(&e->key, key);
if (r==0) r = copy_dbt(&e->val, val);
return r;
}
static void scanscan_heaviside (void) {
int r;
int counter=0;
for (counter=0; counter<n_experiments; counter++) {
struct extra_heavi e;
memset(&e, 0, sizeof(e));
e.key.flags = DB_DBT_REALLOC;
e.val.flags = DB_DBT_REALLOC;
double prevtime = gettime();
DBC *dbc;
r = db->cursor(db, tid, &dbc, 0); assert(r==0);
u_int32_t f_flags = 0;
if (prelockflag && (counter || prelock)) {
f_flags |= lock_flag;
}
//Get first manually.
long rowcounter=1;
r = dbc->c_get(dbc, &e.key, &e.val, DB_FIRST | f_flags); assert(r==0);
e.rowcounter = 1;
e.totalbytes = e.key.size + e.val.size;
while (0 == (r = dbc->c_getf_heaviside(dbc, f_flags,
copy_and_counttotalbytes, &e,
heaviside_next, &e,
1))) {
rowcounter++;
if (limitcount>0 && rowcounter>=limitcount) break;
}
assert(rowcounter==e.rowcounter);
if (e.key.data) {
free(e.key.data);
e.key.data = NULL;
}
if (e.val.data) {
free(e.val.data);
e.val.data = NULL;
}
r = dbc->c_close(dbc); assert(r==0);
double thistime = gettime();
double tdiff = thistime-prevtime;
printf("LWC Scan %lld bytes (%d rows) in %9.6fs at %9fMB/s\n", e.totalbytes, e.rowcounter, tdiff, 1e-6*e.totalbytes/tdiff);
}
}
struct extra_verify {
long long totalbytes;
int rowcounter;
DBT k,v; // the k and v are gotten using the old cursor
};
static int
checkbytes (DBT const *key, DBT const *data, void *extrav) {
struct extra_verify *e=extrav;
e->totalbytes += key->size + data->size;
e->rowcounter++;
assert(e->k.size == key->size);
assert(e->v.size == data->size);
assert(memcmp(e->k.data, key->data, key->size)==0);
assert(memcmp(e->v.data, data->data, data->size)==0);
assert(e->k.data != key->data);
assert(e->v.data != data->data);
return 0;
}
static void scanscan_verify (void) {
int r;
int counter=0;
for (counter=0; counter<n_experiments; counter++) {
struct extra_verify v;
v.totalbytes=0;
v.rowcounter=0;
double prevtime = gettime();
DBC *dbc1, *dbc2;
r = db->cursor(db, tid, &dbc1, 0); assert(r==0);
r = db->cursor(db, tid, &dbc2, 0); assert(r==0);
memset(&v.k, 0, sizeof(v.k));
memset(&v.v, 0, sizeof(v.v));
u_int32_t f_flags = 0;
u_int32_t c_get_flags = DB_NEXT;
if (prelockflag && (counter || prelock)) {
f_flags |= lock_flag;
c_get_flags |= lock_flag;
}
while (1) {
int r1,r2;
r2 = dbc1->c_get(dbc1, &v.k, &v.v, c_get_flags);
r1 = dbc2->c_getf_next(dbc2, f_flags, checkbytes, &v);
assert(r1==r2);
if (r1) break;
}
r = dbc1->c_close(dbc1); assert(r==0);
r = dbc2->c_close(dbc2); assert(r==0);
double thistime = gettime();
double tdiff = thistime-prevtime;
printf("verify %lld bytes (%d rows) in %9.6fs at %9fMB/s\n", v.totalbytes, v.rowcounter, tdiff, 1e-6*v.totalbytes/tdiff);
}
}
#endif
int main (int argc, const char *argv[]) {
parse_args(argc,argv);
scanscan_setup();
switch (run_mode) {
case RUN_HWC: scanscan_hwc(); break;
#ifdef TOKUDB
case RUN_LWC: scanscan_lwc(); break;
case RUN_VERIFY: scanscan_verify(); break;
case RUN_HEAVI: scanscan_heaviside(); break;
#endif
case RUN_RANGE: scanscan_range(); break;
default: assert(0); break;
}
scanscan_shutdown();
#if defined(TOKUDB)
if (1) {
toku_cachetable_print_hash_histogram();
}
// if tokudb has tracing enabled (see trace_mem.h) then this will dump
// the trace data
if (0) {
toku_print_trace_mem();
}
#endif
#if defined(__linux__) && __linux__
char fname[256];
sprintf(fname, "/proc/%d/status", toku_os_getpid());
FILE *f = fopen(fname, "r");
if (f) {
char line[256];
while (fgets(line, sizeof line, f)) {
int n;
if (sscanf(line, "VmPeak: %d", &n) || sscanf(line, "VmHWM: %d", &n) || sscanf(line, "VmRSS: %d", &n))
fputs(line, stdout);
}
fclose(f);
}
#endif
return 0;
}
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