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SMB tree connection rate test
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Copyright (C) 2006-2007 James Peach
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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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#include "libcli/libcli.h"
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#include "libcli/resolve/resolve.h"
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#include "torture/smbtorture.h"
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#include "lib/cmdline/popt_common.h"
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#include "param/param.h"
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#include "system/filesys.h"
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#include "system/shmem.h"
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#define TIME_LIMIT_SECS 30
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#define usec_to_sec(s) ((s) / 1000000)
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/* Map a shared memory buffer of at least nelem counters. */
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static void * map_count_buffer(unsigned nelem, size_t elemsz)
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size_t pagesz = getpagesize();
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bufsz = nelem * elemsz;
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bufsz = (bufsz + pagesz) % pagesz; /* round up to pagesz */
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buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED,
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-1 /* fd */, 0 /* offset */);
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buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED,
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open("/dev/zero", O_RDWR), 0 /* offset */);
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if (buf == MAP_FAILED) {
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printf("failed to map count buffer: %s\n",
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static int fork_tcon_client(struct torture_context *tctx,
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int *tcon_count, unsigned tcon_timelimit,
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const char *host, const char *share)
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struct smbcli_state *cli;
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struct smbcli_options options;
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struct smbcli_session_options session_options;
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lp_smbcli_options(tctx->lp_ctx, &options);
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lp_smbcli_session_options(tctx->lp_ctx, &session_options);
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printf("failed to fork child: %s\n,", strerror(errno));
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} else if (child != 0) {
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/* Parent, just return. */
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/* Child. Just make as many connections as possible within the
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* time limit. Don't bother synchronising the child start times
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* because it's probably not work the effort, and a bit of startup
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* jitter is probably a more realistic test.
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end = timeval_current();
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now = timeval_current();
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end.tv_sec += tcon_timelimit;
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while (timeval_compare(&now, &end) == -1) {
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status = smbcli_full_connection(NULL, &cli,
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host, lp_smb_ports(tctx->lp_ctx), share,
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NULL, lp_socket_options(tctx->lp_ctx), cmdline_credentials,
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lp_resolve_context(tctx->lp_ctx),
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tctx->ev, &options, &session_options,
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lp_iconv_convenience(tctx->lp_ctx),
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lp_gensec_settings(tctx, tctx->lp_ctx));
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if (!NT_STATUS_IS_OK(status)) {
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printf("failed to connect to //%s/%s: %s\n",
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host, share, nt_errstr(status));
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*tcon_count = *tcon_count + 1;
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now = timeval_current();
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static bool children_remain(void)
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/* Reap as many children as possible. */
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pid_t ret = waitpid(-1, NULL, WNOHANG);
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/* no children ready */
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/* no children left. maybe */
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return errno == ECHILD ? false : true;
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static double rate_convert_secs(unsigned count,
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const struct timeval *start, const struct timeval *end)
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return (double)count /
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usec_to_sec((double)usec_time_diff(end, start));
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/* Test the rate at which the server will accept connections. */
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bool torture_bench_treeconnect(struct torture_context *tctx)
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const char *host = torture_setting_string(tctx, "host", NULL);
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const char *share = torture_setting_string(tctx, "share", NULL);
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int timelimit = torture_setting_int(tctx, "timelimit",
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int nprocs = torture_setting_int(tctx, "nprocs", 4);
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int *curr_counts = map_count_buffer(nprocs, sizeof(int));
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int *last_counts = talloc_array(NULL, int, nprocs);
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struct timeval now, last, start;
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torture_assert(tctx, nprocs > 0, "bad proc count");
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torture_assert(tctx, timelimit > 0, "bad timelimit");
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torture_assert(tctx, curr_counts, "allocation failure");
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torture_assert(tctx, last_counts, "allocation failure");
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start = last = timeval_current();
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for (i = 0; i < nprocs; ++i) {
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fork_tcon_client(tctx, &curr_counts[i], timelimit, host, share);
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while (children_remain()) {
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now = timeval_current();
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for (i = 0, delta = 0; i < nprocs; ++i) {
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delta += curr_counts[i] - last_counts[i];
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printf("%u connections/sec\n",
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(unsigned)rate_convert_secs(delta, &last, &now));
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memcpy(last_counts, curr_counts, nprocs * sizeof(int));
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last = timeval_current();
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now = timeval_current();
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for (i = 0, delta = 0; i < nprocs; ++i) {
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delta += curr_counts[i];
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printf("TOTAL: %u connections/sec over %u secs\n",
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(unsigned)rate_convert_secs(delta, &start, &now),
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/* vim: set sts=8 sw=8 : */