1 files changed, 130 insertions, 0 deletions
diff --git a/tests/profile/benchmark-dictionary.c b/tests/profile/benchmark-dictionary.c
new file mode 100644
index 000000000..30c098d5d
--- /dev/null
+++ b/tests/profile/benchmark-dictionary.c
@@ -0,0 +1,130 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * 1. build netdata (as normally)
+ * 2. cd tests/profile/
+ * 3. compile with:
+ *    gcc -O3 -Wall -Wextra -I ../../src/ -I ../../ -o benchmark-dictionary benchmark-dictionary.c ../../src/dictionary.o ../../src/log.o ../../src/avl.o ../../src/common.o -pthread
+ *
+ */
+
+#include "config.h"
+#include "libnetdata/libnetdata.h"
+
+struct myvalue {
+	int i;
+};
+
+void netdata_cleanup_and_exit(int ret) { exit(ret); }
+
+int main(int argc, char **argv) {
+	if(argc || argv) {;}
+
+//	DICTIONARY *dict = dictionary_create(DICTIONARY_FLAG_SINGLE_THREADED|DICTIONARY_FLAG_WITH_STATISTICS);
+	DICTIONARY *dict = dictionary_create(DICTIONARY_FLAG_WITH_STATISTICS);
+	if(!dict) fatal("Cannot create dictionary.");
+
+	struct rusage start, end;
+	unsigned long long dt;
+	char buf[100 + 1];
+	struct myvalue value, *v;
+	int i, max = 30000000, max2;
+
+	// ------------------------------------------------------------------------
+
+	getrusage(RUSAGE_SELF, &start);
+	dict->stats->inserts = dict->stats->deletes = dict->stats->searches = 0ULL;
+	fprintf(stderr, "Inserting %d entries in the dictionary\n", max);
+	for(i = 0; i < max; i++) {
+		value.i = i;
+		snprintf(buf, 100, "%d", i);
+
+		dictionary_set(dict, buf, &value, sizeof(struct myvalue));
+	}
+	getrusage(RUSAGE_SELF, &end);
+	dt = (end.ru_utime.tv_sec * 1000000ULL + end.ru_utime.tv_usec) - (start.ru_utime.tv_sec * 1000000ULL + start.ru_utime.tv_usec);
+	fprintf(stderr, "Added %d entries in %llu nanoseconds: %llu inserts per second\n", max, dt, max * 1000000ULL / dt);
+	fprintf(stderr, " > Dictionary: %llu inserts, %llu deletes, %llu searches\n\n", dict->stats->inserts, dict->stats->deletes, dict->stats->searches);
+
+	// ------------------------------------------------------------------------
+
+	getrusage(RUSAGE_SELF, &start);
+	dict->stats->inserts = dict->stats->deletes = dict->stats->searches = 0ULL;
+	fprintf(stderr, "Retrieving %d entries from the dictionary\n", max);
+	for(i = 0; i < max; i++) {
+		value.i = i;
+		snprintf(buf, 100, "%d", i);
+
+		v = dictionary_get(dict, buf);
+		if(!v)
+			fprintf(stderr, "ERROR: cannot get value %d from the dictionary\n", i);
+		else if(v->i != i)
+			fprintf(stderr, "ERROR: expected %d but got %d\n", i, v->i);
+	}
+	getrusage(RUSAGE_SELF, &end);
+	dt = (end.ru_utime.tv_sec * 1000000ULL + end.ru_utime.tv_usec) - (start.ru_utime.tv_sec * 1000000ULL + start.ru_utime.tv_usec);
+	fprintf(stderr, "Read %d entries in %llu nanoseconds: %llu searches per second\n", max, dt, max * 1000000ULL / dt);
+	fprintf(stderr, " > Dictionary: %llu inserts, %llu deletes, %llu searches\n\n", dict->stats->inserts, dict->stats->deletes, dict->stats->searches);
+
+	// ------------------------------------------------------------------------
+
+	getrusage(RUSAGE_SELF, &start);
+	dict->stats->inserts = dict->stats->deletes = dict->stats->searches = 0ULL;
+	fprintf(stderr, "Resetting %d entries in the dictionary\n", max);
+	for(i = 0; i < max; i++) {
+		value.i = i;
+		snprintf(buf, 100, "%d", i);
+
+		dictionary_set(dict, buf, &value, sizeof(struct myvalue));
+	}
+	getrusage(RUSAGE_SELF, &end);
+	dt = (end.ru_utime.tv_sec * 1000000ULL + end.ru_utime.tv_usec) - (start.ru_utime.tv_sec * 1000000ULL + start.ru_utime.tv_usec);
+	fprintf(stderr, "Reset %d entries in %llu nanoseconds: %llu resets per second\n", max, dt, max * 1000000ULL / dt);
+	fprintf(stderr, " > Dictionary: %llu inserts, %llu deletes, %llu searches\n\n", dict->stats->inserts, dict->stats->deletes, dict->stats->searches);
+
+	// ------------------------------------------------------------------------
+
+	getrusage(RUSAGE_SELF, &start);
+	dict->stats->inserts = dict->stats->deletes = dict->stats->searches = 0ULL;
+	fprintf(stderr, "Searching  %d non-existing entries in the dictionary\n", max);
+	max2 = max * 2;
+	for(i = max; i < max2; i++) {
+		value.i = i;
+		snprintf(buf, 100, "%d", i);
+
+		v = dictionary_get(dict, buf);
+		if(v)
+			fprintf(stderr, "ERROR: cannot got non-existing value %d from the dictionary\n", i);
+	}
+	getrusage(RUSAGE_SELF, &end);
+	dt = (end.ru_utime.tv_sec * 1000000ULL + end.ru_utime.tv_usec) - (start.ru_utime.tv_sec * 1000000ULL + start.ru_utime.tv_usec);
+	fprintf(stderr, "Searched %d non-existing entries in %llu nanoseconds: %llu not found searches per second\n", max, dt, max * 1000000ULL / dt);
+	fprintf(stderr, " > Dictionary: %llu inserts, %llu deletes, %llu searches\n\n", dict->stats->inserts, dict->stats->deletes, dict->stats->searches);
+
+	// ------------------------------------------------------------------------
+
+	getrusage(RUSAGE_SELF, &start);
+	dict->stats->inserts = dict->stats->deletes = dict->stats->searches = 0ULL;
+	fprintf(stderr, "Deleting %d entries from the dictionary\n", max);
+	for(i = 0; i < max; i++) {
+		value.i = i;
+		snprintf(buf, 100, "%d", i);
+
+		dictionary_del(dict, buf);
+	}
+	getrusage(RUSAGE_SELF, &end);
+	dt = (end.ru_utime.tv_sec * 1000000ULL + end.ru_utime.tv_usec) - (start.ru_utime.tv_sec * 1000000ULL + start.ru_utime.tv_usec);
+	fprintf(stderr, "Deleted %d entries in %llu nanoseconds: %llu deletes per second\n", max, dt, max * 1000000ULL / dt);
+	fprintf(stderr, " > Dictionary: %llu inserts, %llu deletes, %llu searches\n\n", dict->stats->inserts, dict->stats->deletes, dict->stats->searches);
+
+	// ------------------------------------------------------------------------
+
+	getrusage(RUSAGE_SELF, &start);
+	dict->stats->inserts = dict->stats->deletes = dict->stats->searches = 0ULL;
+	fprintf(stderr, "Destroying dictionary\n");
+	dictionary_destroy(dict);
+	getrusage(RUSAGE_SELF, &end);
+	dt = (end.ru_utime.tv_sec * 1000000ULL + end.ru_utime.tv_usec) - (start.ru_utime.tv_sec * 1000000ULL + start.ru_utime.tv_usec);
+	fprintf(stderr, "Destroyed in %llu nanoseconds\n", dt);
+
+	return 0;
+}