/*
- dbench version 1.01
-
- Copyright (C) by Andrew Tridgell <tridge@samba.org> 1999, 2001
+ Copyright (C) by Andrew Tridgell <tridge@samba.org> 1999-2007
Copyright (C) 2001 by Martin Pool <mbp@samba.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/* TODO: We could try allowing for different flavours of synchronous
can choose what kind it wants for each OPEN operation. */
#include "dbench.h"
+#include "popt.h"
+#include <sys/sem.h>
+
+struct options options = {
+ .timelimit = 600,
+ .loadfile = DATADIR "/client.txt",
+ .directory = ".",
+ .tcp_options = TCP_OPTIONS,
+ .nprocs = 10,
+ .sync_open = 0,
+ .sync_dirs = 0,
+ .do_fsync = 0,
+ .fsync_frequency = 0,
+ .warmup = -1,
+ .targetrate = 0.0,
+ .ea_enable = 0,
+ .clients_per_process = 1,
+ .server = "localhost",
+};
-int sync_open = 0, sync_dirs = 0;
+static struct timeval tv_start;
+static struct timeval tv_end;
+static int barrier=-1;
+static double throughput;
-static void sigcont(void)
+static FILE *open_loadfile(void)
{
+ FILE *f;
+
+ if ((f = fopen(options.loadfile, "rt")) != NULL)
+ return f;
+
+ fprintf(stderr,
+ "dbench: error opening '%s': %s\n", options.loadfile,
+ strerror(errno));
+
+ return NULL;
+}
+
+
+static struct child_struct *children;
+
+static void sem_cleanup() {
+ if (!(barrier==-1))
+ semctl(barrier,0,IPC_RMID);
+}
+
+static void sig_alarm(int sig)
+{
+ double total_bytes = 0;
+ int total_lines = 0;
+ int i;
+ int nclients = options.nprocs * options.clients_per_process;
+ int in_warmup = 0;
+ double t;
+ static int in_cleanup;
+ double latency;
+ struct timeval tnow;
+ int num_active = 0;
+ int num_finished = 0;
+ (void)sig;
+
+ tnow = timeval_current();
+
+ for (i=0;i<nclients;i++) {
+ total_bytes += children[i].bytes - children[i].bytes_done_warmup;
+ if (children[i].bytes == 0) {
+ in_warmup = 1;
+ } else {
+ num_active++;
+ }
+ total_lines += children[i].line;
+ if (children[i].cleanup_finished) {
+ num_finished++;
+ }
+ }
+
+ t = timeval_elapsed(&tv_start);
+
+ if (!in_warmup && options.warmup>0 && t > options.warmup) {
+ tv_start = tnow;
+ options.warmup = 0;
+ for (i=0;i<nclients;i++) {
+ children[i].bytes_done_warmup = children[i].bytes;
+ children[i].worst_latency = 0;
+ memset(&children[i].op, 0, sizeof(children[i].op));
+ }
+ goto next;
+ }
+ if (t < options.warmup) {
+ in_warmup = 1;
+ } else if (!in_warmup && !in_cleanup && t > options.timelimit) {
+ for (i=0;i<nclients;i++) {
+ children[i].done = 1;
+ }
+ tv_end = tnow;
+ in_cleanup = 1;
+ }
+ if (t < 1) {
+ goto next;
+ }
+
+ latency = 0;
+ if (!in_cleanup) {
+ for (i=0;i<nclients;i++) {
+ latency = MAX(children[i].max_latency, latency);
+ latency = MAX(latency, timeval_elapsed2(&children[i].lasttime, &tnow));
+ children[i].max_latency = 0;
+ if (latency > children[i].worst_latency) {
+ children[i].worst_latency = latency;
+ }
+ }
+ }
+
+ if (in_warmup) {
+ printf("%4d %8d %7.2f MB/sec warmup %3.0f sec latency %.03f ms\n",
+ num_active, total_lines/nclients,
+ 1.0e-6 * total_bytes / t, t, latency*1000);
+ } else if (in_cleanup) {
+ printf("%4d cleanup %3.0f sec\n", nclients - num_finished, t);
+ } else {
+ printf("%4d %8d %7.2f MB/sec execute %3.0f sec latency %.03f ms\n",
+ nclients, total_lines/nclients,
+ 1.0e-6 * total_bytes / t, t, latency*1000);
+ throughput = 1.0e-6 * total_bytes / t;
+ }
+
+ fflush(stdout);
+next:
+ signal(SIGALRM, sig_alarm);
+ alarm(PRINT_FREQ);
+}
+
+
+static const struct {
+ const char *name;
+ size_t offset;
+} op_names[] = {
+#define OP_NAME(opname) { #opname, offsetof(struct opnames, op_ ## opname) }
+ OP_NAME(NTCreateX),
+ OP_NAME(Close),
+ OP_NAME(Rename),
+ OP_NAME(Unlink),
+ OP_NAME(Deltree),
+ OP_NAME(Rmdir),
+ OP_NAME(Mkdir),
+ OP_NAME(Qpathinfo),
+ OP_NAME(Qfileinfo),
+ OP_NAME(Qfsinfo),
+ OP_NAME(Sfileinfo),
+ OP_NAME(Find),
+ OP_NAME(WriteX),
+ OP_NAME(ReadX),
+ OP_NAME(LockX),
+ OP_NAME(UnlockX),
+ OP_NAME(Flush),
+};
+
+static void report_latencies(void)
+{
+ struct opnames sum;
+ int i, j, n = (sizeof(op_names)/sizeof(op_names[0]));
+ struct op *op1, *op2;
+ struct child_struct *child;
+
+ memset(&sum, 0, sizeof(sum));
+ for (i=0;i<n;i++) {
+ op1 = (struct op *)(op_names[i].offset + (char *)&sum);
+ for (j=0;j<options.nprocs * options.clients_per_process;j++) {
+ child = &children[j];
+ op2 = (struct op *)(op_names[i].offset + (char *)&child->op);
+ op1->count += op2->count;
+ op1->total_time += op2->total_time;
+ op1->max_latency = MAX(op1->max_latency, op2->max_latency);
+ }
+ }
+ printf(" Operation Count AvgLat MaxLat\n");
+ printf(" ----------------------------------------\n");
+ for (i=0;i<n;i++) {
+ op1 = (struct op *)(op_names[i].offset + (char *)&sum);
+ if (op1->count == 0) continue;
+ printf(" %-12s %7u %9.03f %9.03f\n",
+ op_names[i].name, op1->count,
+ 1000*op1->total_time/op1->count,
+ op1->max_latency*1000);
+ }
+ printf("\n");
}
/* this creates the specified number of child processes and runs fn()
in all of them */
-static double create_procs(int nprocs, void (*fn)(int ))
+static void create_procs(int nprocs, void (*fn)(struct child_struct *, const char *))
{
+ int nclients = nprocs * options.clients_per_process;
int i, status;
- volatile int *child_status;
int synccount;
+ struct timeval tv;
+ FILE *load;
+ struct sembuf sbuf;
+ double t;
- signal(SIGCONT, sigcont);
-
- start_timer();
-
- synccount = 0;
+ load = open_loadfile();
+ if (load == NULL) {
+ exit(1);
+ }
if (nprocs < 1) {
fprintf(stderr,
"create %d procs? you must be kidding.\n",
nprocs);
- return 1;
+ return;
}
- child_status = (volatile int *)shm_setup(sizeof(int)*nprocs);
- if (!child_status) {
+ children = shm_setup(sizeof(struct child_struct)*nclients);
+ if (!children) {
printf("Failed to setup shared memory\n");
- return end_timer();
+ return;
}
- memset((void *)child_status, 0, sizeof(int)*nprocs);
+ memset(children, 0, sizeof(*children)*nclients);
+
+ for (i=0;i<nclients;i++) {
+ children[i].id = i;
+ children[i].cleanup = 0;
+ children[i].directory = options.directory;
+ children[i].starttime = timeval_current();
+ children[i].lasttime = timeval_current();
+ }
+
+ if (atexit(sem_cleanup) != 0) {
+ printf("can't register cleanup function on exit\n");
+ exit(1);
+ }
+ sbuf.sem_num = 0;
+ if ( !(barrier = semget(IPC_PRIVATE,1,IPC_CREAT | S_IRUSR | S_IWUSR)) ) {
+ printf("failed to create barrier semaphore \n");
+ }
+ sbuf.sem_flg = SEM_UNDO;
+ sbuf.sem_op = 1;
+ if (semop(barrier, &sbuf, 1) == -1) {
+ printf("failed to initialize the barrier semaphore\n");
+ exit(1);
+ }
+ sbuf.sem_flg = 0;
for (i=0;i<nprocs;i++) {
if (fork() == 0) {
- setbuffer(stdout, NULL, 0);
- nb_setup(i);
- child_status[i] = getpid();
- pause();
- fn(i);
+ int j;
+
+ setlinebuf(stdout);
+
+ for (j=0;j<options.clients_per_process;j++) {
+ nb_setup(&children[i*options.clients_per_process + j]);
+ }
+
+ sbuf.sem_op = 0;
+ if (semop(barrier, &sbuf, 1) == -1) {
+ printf("failed to use the barrier semaphore in child %d\n",getpid());
+ exit(1);
+ }
+
+ semctl(barrier,0,IPC_RMID);
+
+ fn(&children[i*options.clients_per_process], options.loadfile);
_exit(0);
}
}
+ synccount = 0;
+ tv = timeval_current();
do {
- synccount = 0;
- for (i=0;i<nprocs;i++) {
- if (child_status[i]) synccount++;
- }
+ synccount = semctl(barrier,0,GETZCNT);
+ t = timeval_elapsed(&tv);
+ printf("%d of %d processes prepared for launch %3.0f sec\n", synccount, nprocs, t);
if (synccount == nprocs) break;
- sleep(1);
- } while (end_timer() < 30);
+ usleep(100*1000);
+ } while (timeval_elapsed(&tv) < 30);
if (synccount != nprocs) {
printf("FAILED TO START %d CLIENTS (started %d)\n", nprocs, synccount);
- return end_timer();
+ return;
}
- start_timer();
- kill(0, SIGCONT);
+ printf("releasing clients\n");
+ tv_start = timeval_current();
+ sbuf.sem_op = -1;
+ if (semop(barrier, &sbuf, 1) == -1) {
+ printf("failed to release barrier\n");
+ exit(1);
+ }
- printf("%d clients started\n", nprocs);
+ semctl(barrier,0,IPC_RMID);
- for (i=0;i<nprocs;i++) {
- waitpid(0, &status, 0);
- printf("*");
+ signal(SIGALRM, sig_alarm);
+ alarm(PRINT_FREQ);
+
+ for (i=0;i<nprocs;) {
+ if (waitpid(0, &status, 0) == -1) continue;
+ if (WEXITSTATUS(status) != 0) {
+ printf("Child failed with status %d\n",
+ WEXITSTATUS(status));
+ exit(1);
+ }
+ i++;
}
+
+ alarm(0);
+ sig_alarm(SIGALRM);
+
printf("\n");
- return end_timer();
+
+ report_latencies();
}
static void show_usage(void)
{
- printf("usage: dbench [OPTIONS] nprocs\n"
- "options:\n"
- " -c CLIENT.TXT set location of client.txt\n"
- " -s synchronous file IO\n"
- " -S synchronous directories (mkdir, unlink...)\n");
+ printf("usage: dbench [OPTIONS] nprocs\n" \
+ "usage: tbench [OPTIONS] nprocs <server>\n" \
+ "options:\n" \
+ " -v show version\n" \
+ " -t timelimit run time in seconds (default 600)\n" \
+ " -D directory base directory to run in\n" \
+ " -c loadfile set location of the loadfile\n" \
+ " -R target rate (MByte/sec)\n" \
+ " -s synchronous file IO\n" \
+ " -F fsync on write\n" \
+ " -S synchronous directories (mkdir, unlink...)\n" \
+ " -x enable EA support\n" \
+ " -T options set socket options for tbench\n");
exit(1);
}
-int process_opts(int argc, char **argv,
- int *nprocs)
+static int process_opts(int argc, const char **argv)
{
- int c;
- extern char *client_filename;
- extern int sync_open;
- extern char *server;
-
- while ((c = getopt(argc, argv, "c:sS")) != -1)
- switch (c) {
- case 'c':
- client_filename = optarg;
- break;
- case 's':
- sync_open = 1;
- break;
- case 'S':
- sync_dirs = 1;
- break;
- case '?':
- if (isprint (optopt))
- fprintf (stderr, "Unknown option `-%c'.\n", optopt);
- else
- fprintf (stderr,
- "Unknown option character `\\x%x'.\n",
- optopt);
- return 0;
+ const char **extra_argv;
+ int extra_argc = 0;
+ struct poptOption popt_options[] = {
+ POPT_AUTOHELP
+ { "timelimit", 't', POPT_ARG_INT, &options.timelimit, 0,
+ "timelimit", "integer" },
+ { "loadfile", 'c', POPT_ARG_STRING, &options.loadfile, 0,
+ "loadfile", "filename" },
+ { "directory", 'D', POPT_ARG_STRING, &options.directory, 0,
+ "working directory", NULL },
+ { "tcp-options", 'T', POPT_ARG_STRING, &options.tcp_options, 0,
+ "TCP socket options", NULL },
+ { "target-rate", 'R', POPT_ARG_DOUBLE, &options.targetrate, 0,
+ "target throughput (MB/sec)", NULL },
+ { "sync", 's', POPT_ARG_NONE, &options.sync_open, 0,
+ "use O_SYNC", NULL },
+ { "sync-dir", 'S', POPT_ARG_NONE, &options.sync_dirs, 0,
+ "sync directory changes", NULL },
+ { "fsync", 'F', POPT_ARG_NONE, &options.do_fsync, 0,
+ "fsync on write", NULL },
+ { "xattr", 'x', POPT_ARG_NONE, &options.ea_enable, 0,
+ "use xattrs", NULL },
+ { "no-resolve", 0, POPT_ARG_NONE, &options.no_resolve, 0,
+ "disable name resolution simulation", NULL },
+ { "clients-per-process", 0, POPT_ARG_INT, &options.clients_per_process, 0,
+ "number of clients per process", NULL },
+ POPT_TABLEEND
+ };
+ poptContext pc;
+ int opt;
+
+ pc = poptGetContext(argv[0], argc, argv, popt_options, POPT_CONTEXT_KEEP_FIRST);
+
+ while ((opt = poptGetNextOpt(pc)) != -1) {
+ switch (opt) {
default:
- abort ();
+ fprintf(stderr, "Invalid option %s: %s\n",
+ poptBadOption(pc, 0), poptStrerror(opt));
+ exit(1);
}
+ }
+
+ /* setup the remaining options for the main program to use */
+ extra_argv = poptGetArgs(pc);
+ if (extra_argv) {
+ extra_argv++;
+ while (extra_argv[extra_argc]) extra_argc++;
+ }
+
+ if (extra_argc < 1) {
+ printf("You need to specify NPROCS\n");
+ poptPrintHelp(pc, stdout, 0);
+ exit(1);
+ }
+
+#ifndef HAVE_EA_SUPPORT
+ if (options.ea_enable) {
+ printf("EA suppport not compiled in\n");
+ exit(1);
+ }
+#endif
- if (!argv[optind])
- return 0;
-
- *nprocs = atoi(argv[optind++]);
+ options.nprocs = atoi(extra_argv[0]);
- if (argv[optind])
- server = argv[optind++];
+ if (extra_argc >= 2) {
+ options.server = extra_argv[1];
+ }
return 1;
}
- int main(int argc, char *argv[])
+ int main(int argc, const char *argv[])
{
- int nprocs;
- double t;
+ double total_bytes = 0;
+ double t, latency=0;
+ int i;
+
+ setlinebuf(stdout);
+
+ printf("dbench version %s - Copyright Andrew Tridgell 1999-2004\n\n", VERSION);
- if (!process_opts(argc, argv, &nprocs))
+ if (!process_opts(argc, argv))
show_usage();
- t = create_procs(nprocs, child_run);
-
- /* to produce a netbench result we scale accoding to the
- netbench measured throughput for the run that produced the
- sniff that was used to produce client.txt. That run used 2
- clients and ran for 660 seconds to produce a result of
- 4MBit/sec. */
- printf("Throughput %g MB/sec (NB=%g MB/sec %g MBit/sec)%s%s\n",
- 132*nprocs/t, 0.5*0.5*nprocs*660/t, 2*nprocs*660/t,
- sync_open ? " (sync open)" : "",
- sync_dirs ? " (sync dirs)" : "");
+ if (options.warmup == -1) {
+ options.warmup = options.timelimit / 5;
+ }
+
+ printf("Running for %d seconds with load '%s' and minimum warmup %d secs\n",
+ options.timelimit, options.loadfile, options.warmup);
+
+ create_procs(options.nprocs, child_run);
+
+ for (i=0;i<options.nprocs*options.clients_per_process;i++) {
+ total_bytes += children[i].bytes - children[i].bytes_done_warmup;
+ latency = MAX(latency, children[i].worst_latency);
+ }
+
+ t = timeval_elapsed2(&tv_start, &tv_end);
+
+ printf("Throughput %g MB/sec%s%s %d clients %d procs max_latency=%.03f ms\n",
+ throughput,
+ options.sync_open ? " (sync open)" : "",
+ options.sync_dirs ? " (sync dirs)" : "",
+ options.nprocs*options.clients_per_process,
+ options.nprocs, latency*1000);
return 0;
}
git.samba.org / tridge / dbench.git / blobdiff