diff options
| author | William Casarin <jb55@jb55.com> | 2018-07-09 22:28:25 -0700 |
|---|---|---|
| committer | William Casarin <jb55@jb55.com> | 2018-07-09 22:31:48 -0700 |
| commit | 9593fc545950782ed75f12f53238b07885559b2b (patch) | |
| tree | 9c7c2f7cbb427c54e9184cb61eedce737a6cbc6f /ccan/htable/tools | |
| parent | bd8c223756d2f912526ecef53bae0cc8e0c63442 (diff) | |
remove ccan for now
Diffstat (limited to 'ccan/htable/tools')
| -rw-r--r-- | ccan/htable/tools/Makefile | 40 | ||||
| -rw-r--r-- | ccan/htable/tools/hsearchspeed.c | 95 | ||||
| -rw-r--r-- | ccan/htable/tools/speed.c | 370 | ||||
| -rw-r--r-- | ccan/htable/tools/stringspeed.c | 240 |
4 files changed, 0 insertions, 745 deletions
diff --git a/ccan/htable/tools/Makefile b/ccan/htable/tools/Makefile deleted file mode 100644 index a2cad59..0000000 --- a/ccan/htable/tools/Makefile +++ /dev/null @@ -1,40 +0,0 @@ -CCANDIR=../../.. -CFLAGS=-Wall -Werror -O3 -I$(CCANDIR) -#CFLAGS=-Wall -Werror -g -I$(CCANDIR) - -CCAN_OBJS:=ccan-tal.o ccan-tal-str.o ccan-tal-grab_file.o ccan-take.o ccan-time.o ccan-str.o ccan-noerr.o ccan-list.o - -all: speed stringspeed hsearchspeed - -speed: speed.o hash.o $(CCAN_OBJS) - -speed.o: speed.c ../htable.h ../htable.c - -hash.o: ../../hash/hash.c - $(CC) $(CFLAGS) -c -o $@ $< - -stringspeed: stringspeed.o hash.o $(CCAN_OBJS) - -stringspeed.o: speed.c ../htable.h ../htable.c - -hsearchspeed: hsearchspeed.o $(CCAN_OBJS) - -clean: - rm -f stringspeed speed hsearchspeed *.o - -ccan-tal.o: $(CCANDIR)/ccan/tal/tal.c - $(CC) $(CFLAGS) -c -o $@ $< -ccan-tal-str.o: $(CCANDIR)/ccan/tal/str/str.c - $(CC) $(CFLAGS) -c -o $@ $< -ccan-take.o: $(CCANDIR)/ccan/take/take.c - $(CC) $(CFLAGS) -c -o $@ $< -ccan-tal-grab_file.o: $(CCANDIR)/ccan/tal/grab_file/grab_file.c - $(CC) $(CFLAGS) -c -o $@ $< -ccan-time.o: $(CCANDIR)/ccan/time/time.c - $(CC) $(CFLAGS) -c -o $@ $< -ccan-list.o: $(CCANDIR)/ccan/list/list.c - $(CC) $(CFLAGS) -c -o $@ $< -ccan-str.o: $(CCANDIR)/ccan/str/str.c - $(CC) $(CFLAGS) -c -o $@ $< -ccan-noerr.o: $(CCANDIR)/ccan/noerr/noerr.c - $(CC) $(CFLAGS) -c -o $@ $< diff --git a/ccan/htable/tools/hsearchspeed.c b/ccan/htable/tools/hsearchspeed.c deleted file mode 100644 index 8828011..0000000 --- a/ccan/htable/tools/hsearchspeed.c +++ /dev/null @@ -1,95 +0,0 @@ -/* Simple speed tests for a hash of strings using hsearch */ -#include <ccan/htable/htable_type.h> -#include <ccan/htable/htable.c> -#include <ccan/tal/str/str.h> -#include <ccan/tal/grab_file/grab_file.h> -#include <ccan/tal/tal.h> -#include <ccan/hash/hash.h> -#include <ccan/time/time.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <unistd.h> -#include <sys/time.h> -#include <search.h> - -/* Nanoseconds per operation */ -static size_t normalize(const struct timeabs *start, - const struct timeabs *stop, - unsigned int num) -{ - return time_to_nsec(time_divide(time_between(*stop, *start), num)); -} - -int main(int argc, char *argv[]) -{ - size_t i, j, num; - struct timeabs start, stop; - char **w; - ENTRY *words, *misswords; - - w = tal_strsplit(NULL, grab_file(NULL, - argv[1] ? argv[1] : "/usr/share/dict/words"), "\n", STR_NO_EMPTY); - num = tal_count(w) - 1; - printf("%zu words\n", num); - - hcreate(num+num/3); - - words = tal_arr(w, ENTRY, num); - for (i = 0; i < num; i++) { - words[i].key = w[i]; - words[i].data = words[i].key; - } - - /* Append and prepend last char for miss testing. */ - misswords = tal_arr(w, ENTRY, num); - for (i = 0; i < num; i++) { - char lastc; - if (strlen(w[i])) - lastc = w[i][strlen(w[i])-1]; - else - lastc = 'z'; - misswords[i].key = tal_fmt(misswords, "%c%s%c%c", - lastc, w[i], lastc, lastc); - } - - printf("#01: Initial insert: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - hsearch(words[i], ENTER); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#02: Initial lookup (match): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - if (hsearch(words[i], FIND)->data != words[i].data) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#03: Initial lookup (miss): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) { - if (hsearch(misswords[i], FIND)) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - /* Lookups in order are very cache-friendly for judy; try random */ - printf("#04: Initial lookup (random): "); - fflush(stdout); - start = time_now(); - for (i = 0, j = 0; i < num; i++, j = (j + 10007) % num) - if (hsearch(words[i], FIND)->data != words[i].data) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - return 0; -} diff --git a/ccan/htable/tools/speed.c b/ccan/htable/tools/speed.c deleted file mode 100644 index dce3fdf..0000000 --- a/ccan/htable/tools/speed.c +++ /dev/null @@ -1,370 +0,0 @@ -/* Simple speed tests for hashtables. */ -#include <ccan/htable/htable_type.h> -#include <ccan/htable/htable.c> -#include <ccan/hash/hash.h> -#include <ccan/time/time.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -static size_t hashcount; -struct object { - /* The key. */ - unsigned int key; - - /* Some contents. Doubles as consistency check. */ - struct object *self; -}; - -static const unsigned int *objkey(const struct object *obj) -{ - return &obj->key; -} - -static size_t hash_obj(const unsigned int *key) -{ - hashcount++; - return hashl(key, 1, 0); -} - -static bool cmp(const struct object *object, const unsigned int *key) -{ - return object->key == *key; -} - -HTABLE_DEFINE_TYPE(struct object, objkey, hash_obj, cmp, htable_obj); - -static unsigned int popcount(unsigned long val) -{ -#if HAVE_BUILTIN_POPCOUNTL - return __builtin_popcountl(val); -#else - if (sizeof(long) == sizeof(u64)) { - u64 v = val; - v = (v & 0x5555555555555555ULL) - + ((v >> 1) & 0x5555555555555555ULL); - v = (v & 0x3333333333333333ULL) - + ((v >> 1) & 0x3333333333333333ULL); - v = (v & 0x0F0F0F0F0F0F0F0FULL) - + ((v >> 1) & 0x0F0F0F0F0F0F0F0FULL); - v = (v & 0x00FF00FF00FF00FFULL) - + ((v >> 1) & 0x00FF00FF00FF00FFULL); - v = (v & 0x0000FFFF0000FFFFULL) - + ((v >> 1) & 0x0000FFFF0000FFFFULL); - v = (v & 0x00000000FFFFFFFFULL) - + ((v >> 1) & 0x00000000FFFFFFFFULL); - return v; - } - val = (val & 0x55555555ULL) + ((val >> 1) & 0x55555555ULL); - val = (val & 0x33333333ULL) + ((val >> 1) & 0x33333333ULL); - val = (val & 0x0F0F0F0FULL) + ((val >> 1) & 0x0F0F0F0FULL); - val = (val & 0x00FF00FFULL) + ((val >> 1) & 0x00FF00FFULL); - val = (val & 0x0000FFFFULL) + ((val >> 1) & 0x0000FFFFULL); - return val; -#endif -} - -static size_t perfect(const struct htable *ht) -{ - size_t i, placed_perfect = 0; - - for (i = 0; i < ((size_t)1 << ht->bits); i++) { - if (!entry_is_valid(ht->table[i])) - continue; - if (hash_bucket(ht, ht->rehash(get_raw_ptr(ht, ht->table[i]), - ht->priv)) == i) { - assert((ht->table[i] & ht->perfect_bit) - == ht->perfect_bit); - placed_perfect++; - } - } - return placed_perfect; -} - -static size_t count_deleted(const struct htable *ht) -{ - size_t i, delete_markers = 0; - - for (i = 0; i < ((size_t)1 << ht->bits); i++) { - if (ht->table[i] == HTABLE_DELETED) - delete_markers++; - } - return delete_markers; -} - -/* Nanoseconds per operation */ -static size_t normalize(const struct timeabs *start, - const struct timeabs *stop, - unsigned int num) -{ - return time_to_nsec(time_divide(time_between(*stop, *start), num)); -} - -static size_t worst_run(struct htable *ht, size_t *deleted) -{ - size_t longest = 0, len = 0, this_del = 0, i; - - *deleted = 0; - /* This doesn't take into account end-wrap, but gives an idea. */ - for (i = 0; i < ((size_t)1 << ht->bits); i++) { - if (ht->table[i]) { - len++; - if (ht->table[i] == HTABLE_DELETED) - this_del++; - } else { - if (len > longest) { - longest = len; - *deleted = this_del; - } - len = 0; - this_del = 0; - } - } - return longest; -} - -int main(int argc, char *argv[]) -{ - struct object *objs; - unsigned int i, j; - size_t num, deleted; - struct timeabs start, stop; - struct htable_obj ht; - bool make_dumb = false; - - if (argv[1] && strcmp(argv[1], "--dumb") == 0) { - argv++; - make_dumb = true; - } - num = argv[1] ? atoi(argv[1]) : 1000000; - objs = calloc(num, sizeof(objs[0])); - - for (i = 0; i < num; i++) { - objs[i].key = i; - objs[i].self = &objs[i]; - } - - htable_obj_init(&ht); - - printf("Initial insert: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - htable_obj_add(&ht, objs[i].self); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - printf("Details: hash size %u, mask bits %u, perfect %.0f%%\n", - 1U << ht.raw.bits, popcount(ht.raw.common_mask), - perfect(&ht.raw) * 100.0 / ht.raw.elems); - - if (make_dumb) { - /* Screw with mask, to hobble us. */ - update_common(&ht.raw, (void *)~ht.raw.common_bits); - printf("Details: DUMB MODE: mask bits %u\n", - popcount(ht.raw.common_mask)); - } - - printf("Initial lookup (match): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - if (htable_obj_get(&ht, &i)->self != objs[i].self) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Initial lookup (miss): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) { - unsigned int n = i + num; - if (htable_obj_get(&ht, &n)) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - /* Lookups in order are very cache-friendly for judy; try random */ - printf("Initial lookup (random): "); - fflush(stdout); - start = time_now(); - for (i = 0, j = 0; i < num; i++, j = (j + 10007) % num) - if (htable_obj_get(&ht, &j)->self != &objs[j]) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - hashcount = 0; - printf("Initial delete all: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - if (!htable_obj_del(&ht, objs[i].self)) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - printf("Details: rehashes %zu\n", hashcount); - - printf("Initial re-inserting: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - htable_obj_add(&ht, objs[i].self); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - hashcount = 0; - printf("Deleting first half: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i+=2) - if (!htable_obj_del(&ht, objs[i].self)) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Details: rehashes %zu, delete markers %zu\n", - hashcount, count_deleted(&ht.raw)); - - printf("Adding (a different) half: "); - fflush(stdout); - - for (i = 0; i < num; i+=2) - objs[i].key = num+i; - - start = time_now(); - for (i = 0; i < num; i+=2) - htable_obj_add(&ht, objs[i].self); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Details: delete markers %zu, perfect %.0f%%\n", - count_deleted(&ht.raw), perfect(&ht.raw) * 100.0 / ht.raw.elems); - - printf("Lookup after half-change (match): "); - fflush(stdout); - start = time_now(); - for (i = 1; i < num; i+=2) - if (htable_obj_get(&ht, &i)->self != objs[i].self) - abort(); - for (i = 0; i < num; i+=2) { - unsigned int n = i + num; - if (htable_obj_get(&ht, &n)->self != objs[i].self) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Lookup after half-change (miss): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) { - unsigned int n = i + num * 2; - if (htable_obj_get(&ht, &n)) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - /* Hashtables with delete markers can fill with markers over time. - * so do some changes to see how it operates in long-term. */ - for (i = 0; i < 5; i++) { - if (i == 0) { - /* We don't measure this: jmap is different. */ - printf("Details: initial churn\n"); - } else { - printf("Churning %s time: ", - i == 1 ? "second" - : i == 2 ? "third" - : i == 3 ? "fourth" - : "fifth"); - fflush(stdout); - } - start = time_now(); - for (j = 0; j < num; j++) { - if (!htable_obj_del(&ht, &objs[j])) - abort(); - objs[j].key = num*i+j; - if (!htable_obj_add(&ht, &objs[j])) - abort(); - } - stop = time_now(); - if (i != 0) - printf(" %zu ns\n", normalize(&start, &stop, num)); - } - - /* Spread out the keys more to try to make it harder. */ - printf("Details: reinserting with spread\n"); - for (i = 0; i < num; i++) { - if (!htable_obj_del(&ht, objs[i].self)) - abort(); - objs[i].key = num * 5 + i * 9; - if (!htable_obj_add(&ht, objs[i].self)) - abort(); - } - printf("Details: delete markers %zu, perfect %.0f%%\n", - count_deleted(&ht.raw), perfect(&ht.raw) * 100.0 / ht.raw.elems); - i = worst_run(&ht.raw, &deleted); - printf("Details: worst run %u (%zu deleted)\n", i, deleted); - - printf("Lookup after churn & spread (match): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) { - unsigned int n = num * 5 + i * 9; - if (htable_obj_get(&ht, &n)->self != objs[i].self) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Lookup after churn & spread (miss): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) { - unsigned int n = num * (5 + 9) + i * 9; - if (htable_obj_get(&ht, &n)) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Lookup after churn & spread (random): "); - fflush(stdout); - start = time_now(); - for (i = 0, j = 0; i < num; i++, j = (j + 10007) % num) { - unsigned int n = num * 5 + j * 9; - if (htable_obj_get(&ht, &n)->self != &objs[j]) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - hashcount = 0; - printf("Deleting half after churn & spread: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i+=2) - if (!htable_obj_del(&ht, objs[i].self)) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Adding (a different) half after churn & spread: "); - fflush(stdout); - - for (i = 0; i < num; i+=2) - objs[i].key = num*6+i*9; - - start = time_now(); - for (i = 0; i < num; i+=2) - htable_obj_add(&ht, objs[i].self); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Details: delete markers %zu, perfect %.0f%%\n", - count_deleted(&ht.raw), perfect(&ht.raw) * 100.0 / ht.raw.elems); - - return 0; -} diff --git a/ccan/htable/tools/stringspeed.c b/ccan/htable/tools/stringspeed.c deleted file mode 100644 index c6ca10f..0000000 --- a/ccan/htable/tools/stringspeed.c +++ /dev/null @@ -1,240 +0,0 @@ -/* Simple speed tests for a hash of strings. */ -#include <ccan/htable/htable_type.h> -#include <ccan/htable/htable.c> -#include <ccan/tal/str/str.h> -#include <ccan/tal/grab_file/grab_file.h> -#include <ccan/tal/tal.h> -#include <ccan/hash/hash.h> -#include <ccan/time/time.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <unistd.h> -#include <sys/time.h> - -static size_t hashcount; - -static const char *strkey(const char *str) -{ - return str; -} - -static size_t hash_str(const char *key) -{ - hashcount++; - return hash(key, strlen(key), 0); -} - -static bool cmp(const char *obj, const char *key) -{ - return strcmp(obj, key) == 0; -} - -HTABLE_DEFINE_TYPE(char, strkey, hash_str, cmp, htable_str); - -/* Nanoseconds per operation */ -static size_t normalize(const struct timeabs *start, - const struct timeabs *stop, - unsigned int num) -{ - return time_to_nsec(time_divide(time_between(*stop, *start), num)); -} - -int main(int argc, char *argv[]) -{ - size_t i, j, num; - struct timeabs start, stop; - struct htable_str ht; - char **words, **misswords; - - words = tal_strsplit(NULL, grab_file(NULL, - argv[1] ? argv[1] : "/usr/share/dict/words"), "\n", - STR_NO_EMPTY); - htable_str_init(&ht); - num = tal_count(words) - 1; - /* Note that on my system, num is just > 98304, where we double! */ - printf("%zu words\n", num); - - /* Append and prepend last char for miss testing. */ - misswords = tal_arr(words, char *, num); - for (i = 0; i < num; i++) { - char lastc; - if (strlen(words[i])) - lastc = words[i][strlen(words[i])-1]; - else - lastc = 'z'; - misswords[i] = tal_fmt(misswords, "%c%s%c%c", - lastc, words[i], lastc, lastc); - } - - printf("#01: Initial insert: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - htable_str_add(&ht, words[i]); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("Bytes allocated: %zu\n", - sizeof(ht.raw.table[0]) << ht.raw.bits); - - printf("#02: Initial lookup (match): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - if (htable_str_get(&ht, words[i]) != words[i]) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#03: Initial lookup (miss): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) { - if (htable_str_get(&ht, misswords[i])) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - /* Lookups in order are very cache-friendly for judy; try random */ - printf("#04: Initial lookup (random): "); - fflush(stdout); - start = time_now(); - for (i = 0, j = 0; i < num; i++, j = (j + 10007) % num) - if (htable_str_get(&ht, words[j]) != words[j]) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - hashcount = 0; - printf("#05: Initial delete all: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - if (!htable_str_del(&ht, words[i])) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#06: Initial re-inserting: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - htable_str_add(&ht, words[i]); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - hashcount = 0; - printf("#07: Deleting first half: "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i+=2) - if (!htable_str_del(&ht, words[i])) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#08: Adding (a different) half: "); - fflush(stdout); - - start = time_now(); - for (i = 0; i < num; i+=2) - htable_str_add(&ht, misswords[i]); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#09: Lookup after half-change (match): "); - fflush(stdout); - start = time_now(); - for (i = 1; i < num; i+=2) - if (htable_str_get(&ht, words[i]) != words[i]) - abort(); - for (i = 0; i < num; i+=2) { - if (htable_str_get(&ht, misswords[i]) != misswords[i]) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#10: Lookup after half-change (miss): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i+=2) - if (htable_str_get(&ht, words[i])) - abort(); - for (i = 1; i < num; i+=2) { - if (htable_str_get(&ht, misswords[i])) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - /* Hashtables with delete markers can fill with markers over time. - * so do some changes to see how it operates in long-term. */ - printf("#11: Churn 1: "); - start = time_now(); - for (j = 0; j < num; j+=2) { - if (!htable_str_del(&ht, misswords[j])) - abort(); - if (!htable_str_add(&ht, words[j])) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#12: Churn 2: "); - start = time_now(); - for (j = 1; j < num; j+=2) { - if (!htable_str_del(&ht, words[j])) - abort(); - if (!htable_str_add(&ht, misswords[j])) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#13: Churn 3: "); - start = time_now(); - for (j = 1; j < num; j+=2) { - if (!htable_str_del(&ht, misswords[j])) - abort(); - if (!htable_str_add(&ht, words[j])) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - /* Now it's back to normal... */ - printf("#14: Post-Churn lookup (match): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) - if (htable_str_get(&ht, words[i]) != words[i]) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - printf("#15: Post-Churn lookup (miss): "); - fflush(stdout); - start = time_now(); - for (i = 0; i < num; i++) { - if (htable_str_get(&ht, misswords[i])) - abort(); - } - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - /* Lookups in order are very cache-friendly for judy; try random */ - printf("#16: Post-Churn lookup (random): "); - fflush(stdout); - start = time_now(); - for (i = 0, j = 0; i < num; i++, j = (j + 10007) % num) - if (htable_str_get(&ht, words[j]) != words[j]) - abort(); - stop = time_now(); - printf(" %zu ns\n", normalize(&start, &stop, num)); - - return 0; -} |
