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make scanscan range test better refs[t:2258]

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git-svn-id: file:///svn/toku/tokudb@16502 c7de825b-a66e-492c-adef-691d508d4ae1
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Rich Prohaska 2013-04-16 23:58:56 -04:00 • committed by Yoni Fogel
parent 9ab8bd7491
commit 3087a30320
1 changed files with 38 additions and 17 deletions
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55
db-benchmark-test/scanscan.c
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@ -322,15 +322,15 @@ static void scanscan_flatten (void) {
#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);
double texperiments[n_experiments];
int counter;
for (counter=0; counter<n_experiments; counter++) {
makekey:
;
// generate a random key in the key range
u_int64_t k = (start_range + (random() % (end_range - start_range))) * (1<<6);
char kv[8];
@ -340,29 +340,50 @@ static void scanscan_range (void) {
DBT key; memset(&key, 0, sizeof key); key.data = &kv, key.size = sizeof kv;
DBT val; memset(&val, 0, sizeof val);
double tstart = gettime();
DBC *dbc;
r = db->cursor(db, tid, &dbc, 0); assert(r==0);
// 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);
r = dbc->c_get(dbc, &key, &val, DB_SET_RANGE+lock_flag);
if (r != 0) {
assert(r == DB_NOTFOUND);
goto makekey;
}
#if 0
// do the range scan
u_int32_t f_flags = 0;
if (prelockflag) {
f_flags |= lock_flag;
}
long rowcounter=0;
struct extra_count e = {0,0};
while (0 == (r = dbc->c_getf_next(dbc, f_flags, counttotalbytes, &e))) {
rowcounter++;
if (limitcount>0 && rowcounter>=limitcount) break;
if (limitcount<=0 || (limitcount>0 && rowcounter>=limitcount))
break;
}
#endif
print_engine_status();
r = dbc->c_close(dbc);
assert(r==0);
texperiments[counter] = gettime() - tstart;
}
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);
// print the times
double tsum = 0.0, tmin = 0.0, tmax = 0.0;
for (counter=0; counter<n_experiments; counter++) {
if (tmin == 0.0 || texperiments[counter] < tmin)
tmin = texperiments[counter];
if (tmax == 0.0 || texperiments[counter] > tmax)
tmax = texperiments[counter];
tsum += texperiments[counter];
printf("%f\n", texperiments[counter]);
}
printf("%f %f %f/%d = %f\n", tmin, tmax, tsum, n_experiments, tsum / n_experiments);
}
#ifdef TOKUDB