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64f61364a7
entry to the end of the list DLIST (worst case insert) (This used to be ctdb commit dcdf4a1f1c6675ae11ab26726c867d7782954fc6)
124 lines
2.9 KiB
C
124 lines
2.9 KiB
C
/*
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simple rb vs dlist benchmark
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Copyright (C) Ronnie Sahlberg 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "lib/events/events.h"
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#include "lib/util/dlinklist.h"
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#include "system/filesys.h"
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#include "popt.h"
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#include "cmdline.h"
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#include <sys/time.h>
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#include <time.h>
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#include "common/rb_tree.h"
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static struct timeval tp1,tp2;
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static void start_timer(void)
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{
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gettimeofday(&tp1,NULL);
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}
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static double end_timer(void)
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{
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gettimeofday(&tp2,NULL);
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return (tp2.tv_sec + (tp2.tv_usec*1.0e-6)) -
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(tp1.tv_sec + (tp1.tv_usec*1.0e-6));
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}
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static int num_records = 1000;
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struct list_node {
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struct list_node *prev, *next;
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};
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/*
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main program
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*/
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int main(int argc, const char *argv[])
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{
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struct poptOption popt_options[] = {
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POPT_AUTOHELP
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POPT_CTDB_CMDLINE
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{ "num-records", 'r', POPT_ARG_INT, &num_records, 0, "num_records", "integer" },
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POPT_TABLEEND
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};
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int opt;
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const char **extra_argv;
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int extra_argc = 0;
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int ret;
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poptContext pc;
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struct event_context *ev;
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double elapsed;
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int i;
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trbt_tree_t *tree;
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struct list_node *list, *list_new, *list_head=NULL;
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pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
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while ((opt = poptGetNextOpt(pc)) != -1) {
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switch (opt) {
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default:
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fprintf(stderr, "Invalid option %s: %s\n",
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poptBadOption(pc, 0), poptStrerror(opt));
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exit(1);
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}
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}
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/* setup the remaining options for the main program to use */
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extra_argv = poptGetArgs(pc);
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if (extra_argv) {
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extra_argv++;
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while (extra_argv[extra_argc]) extra_argc++;
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}
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ev = event_context_init(NULL);
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printf("testing tree insert for %d records\n", num_records);
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tree = trbt_create(NULL);
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start_timer();
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for (i=0;i<num_records;i++) {
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trbt_insert32(tree, i, NULL);
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}
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elapsed=end_timer();
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printf("%f seconds\n",(float)elapsed);
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printf("testing dlist (worst case) add to tail for %d records\n", num_records);
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list_new=talloc(NULL, struct list_node);
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DLIST_ADD(list_head, list_new);
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start_timer();
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for (i=0;i<num_records;i++) {
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for(list=list_head;list->next;list=list->next) {
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/* the events code does a timeval_compare */
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timeval_compare(&tp1, &tp2);
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}
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list_new=talloc(NULL, struct list_node);
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DLIST_ADD_AFTER(list_head, list_new, list);
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}
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elapsed=end_timer();
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printf("%f seconds\n",(float)elapsed);
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return 0;
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}
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