smbtorture: Add RAW-BENCH-TCON benchmark.

Add a simple test to benchmark the rate at which a server can accept
new tree connections. You can tune the length of time to run the
benchmark for and the number of parallel connections to make.
(This used to be commit ea3f4b93057e85c4ea516cc77dd0f293016d520c)

5 files changed, 206 insertions, 2 deletions

diff --git a/source4/lib/util/time.c b/source4/lib/util/time.c
index a181885806..978d73cc0a 100644
--- a/source4/lib/util/time.c
+++ b/source4/lib/util/time.c
@@ -376,7 +376,7 @@ _PUBLIC_ NTTIME pull_nttime(uint8_t *base, uint16_t offset)
 /**
   return (tv1 - tv2) in microseconds
 */
-_PUBLIC_ int64_t usec_time_diff(struct timeval *tv1, struct timeval *tv2)
+_PUBLIC_ int64_t usec_time_diff(const struct timeval *tv1, const struct timeval *tv2)
 {
 	int64_t sec_diff = tv1->tv_sec - tv2->tv_sec;
 	return (sec_diff * 1000000) + (int64_t)(tv1->tv_usec - tv2->tv_usec);
diff --git a/source4/lib/util/time.h b/source4/lib/util/time.h
index 1ab976ca78..e4008c5782 100644
--- a/source4/lib/util/time.h
+++ b/source4/lib/util/time.h
@@ -127,7 +127,7 @@ _PUBLIC_ NTTIME nttime_from_string(const char *s);
 /**
   return (tv1 - tv2) in microseconds
 */
-_PUBLIC_ int64_t usec_time_diff(struct timeval *tv1, struct timeval *tv2);
+_PUBLIC_ int64_t usec_time_diff(const struct timeval *tv1, const struct timeval *tv2);
 
 /**
   return a zero timeval
diff --git a/source4/torture/config.mk b/source4/torture/config.mk
index e82cb4523d..2857b99582 100644
--- a/source4/torture/config.mk
+++ b/source4/torture/config.mk
@@ -70,6 +70,7 @@ TORTURE_RAW_OBJ_FILES = $(addprefix $(torturesrcdir)/raw/, \
 		pingpong.o \
 		lockbench.o \
 		lookuprate.o \
+		tconrate.o \
 		openbench.o \
 		rename.o \
 		eas.o \
diff --git a/source4/torture/raw/raw.c b/source4/torture/raw/raw.c
index c6133081b0..0a7fc3ebfd 100644
--- a/source4/torture/raw/raw.c
+++ b/source4/torture/raw/raw.c
@@ -35,6 +35,8 @@ NTSTATUS torture_raw_init(void)
 	torture_suite_add_simple_test(suite, "BENCH-OPEN", torture_bench_open);
 	torture_suite_add_simple_test(suite, "BENCH-LOOKUP",
 		torture_bench_lookup);
+	torture_suite_add_simple_test(suite, "BENCH-TCON",
+		torture_bench_treeconnect);
 	torture_suite_add_simple_test(suite, "OFFLINE", torture_test_offline);
 	torture_suite_add_1smb_test(suite, "QFSINFO", torture_raw_qfsinfo);
 	torture_suite_add_1smb_test(suite, "QFILEINFO", torture_raw_qfileinfo);
diff --git a/source4/torture/raw/tconrate.c b/source4/torture/raw/tconrate.c
new file mode 100644
index 0000000000..6f0ba0d617
--- /dev/null
+++ b/source4/torture/raw/tconrate.c
@@ -0,0 +1,201 @@
+/*
+   SMB tree connection rate test
+
+   Copyright (C) 2006-2007 James Peach
+
+   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 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "libcli/libcli.h"
+#include "libcli/resolve/resolve.h"
+#include "torture/smbtorture.h"
+#include "lib/cmdline/popt_common.h"
+#include "param/param.h"
+
+#include "system/filesys.h"
+#include "system/shmem.h"
+
+#define TIME_LIMIT_SECS 30
+#define usec_to_sec(s) ((s) / 1000000)
+#define sec_to_usec(s) ((s) * 1000000)
+
+/* Map a shared memory buffer of at least nelem counters. */
+static void * map_count_buffer(unsigned nelem, size_t elemsz)
+{
+	void * buf;
+	size_t bufsz;
+	size_t pagesz = getpagesize();
+
+	bufsz = nelem * elemsz;
+	bufsz = (bufsz + pagesz) % pagesz; /* round up to pagesz */
+
+#ifdef MAP_ANON
+	/* BSD */
+	buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED,
+			-1 /* fd */, 0 /* offset */);
+#else
+	buf = mmap(NULL, bufsz, PROT_READ|PROT_WRITE, MAP_FILE|MAP_SHARED,
+			open("/dev/zero", O_RDWR), 0 /* offset */);
+#endif
+
+	if (buf == MAP_FAILED) {
+		printf("failed to map count buffer: %s\n",
+				strerror(errno));
+		return NULL;
+	}
+
+	return buf;
+
+}
+
+static int fork_tcon_client(struct torture_context *tctx,
+		int *tcon_count, unsigned tcon_timelimit,
+		const char *host, const char *share)
+{
+	pid_t child;
+	struct smbcli_state *cli;
+	struct timeval end;
+	struct timeval now;
+	struct smbcli_options options;
+
+	lp_smbcli_options(tctx->lp_ctx, &options);
+
+	child = fork();
+	if (child == -1) {
+		printf("failed to fork child: %s\n,", strerror(errno));
+		return -1;
+	} else if (child != 0) {
+		/* Parent, just return. */
+		return 0;
+	}
+
+	/* Child. Just make as many connections as possible within the
+	 * time limit. Don't bother synchronising the child start times
+	 * because it's probably not work the effort, and a bit of startup
+	 * jitter is probably a more realistic test.
+	 */
+
+
+	end = timeval_current();
+	now = timeval_current();
+	end.tv_sec += tcon_timelimit;
+	*tcon_count = 0;
+
+	while (timeval_compare(&now, &end) == -1) {
+		NTSTATUS status;
+
+		status = smbcli_full_connection(NULL, &cli,
+				host, lp_smb_ports(tctx->lp_ctx), share,
+				NULL, cmdline_credentials,
+				lp_resolve_context(tctx->lp_ctx),
+				tctx->ev, &options);
+
+		if (!NT_STATUS_IS_OK(status)) {
+			printf("failed to connect to //%s/%s: %s\n",
+				host, share, nt_errstr(status));
+			goto done;
+		}
+
+		smbcli_tdis(cli);
+
+		*tcon_count = *tcon_count + 1;
+		now = timeval_current();
+	}
+
+done:
+	exit(0);
+}
+
+static bool children_remain(void)
+{
+	/* Reap as many children as possible. */
+	for (;;) {
+		pid_t ret = waitpid(-1, NULL, WNOHANG);
+		if (ret == 0) {
+			/* no children ready */
+			return true;
+		}
+		if (ret == -1) {
+			/* no children left. maybe */
+			return errno == ECHILD ? false : true;
+		}
+	}
+
+	/* notreached */
+	return false;
+}
+
+static double rate_convert_secs(unsigned count,
+		const struct timeval *start, const struct timeval *end)
+{
+	return (double)count /
+		usec_to_sec((double)usec_time_diff(end, start));
+}
+
+/* Test the rate at which the server will accept connections.  */
+bool torture_bench_treeconnect(struct torture_context *tctx)
+{
+	const char *host = torture_setting_string(tctx, "host", NULL);
+	const char *share = torture_setting_string(tctx, "share", NULL);
+
+	int timelimit = torture_setting_int(tctx, "timelimit",
+					TIME_LIMIT_SECS);
+	int nprocs = torture_setting_int(tctx, "nprocs", 4);
+
+	int *curr_counts = map_count_buffer(nprocs, sizeof(int));
+	int *last_counts = talloc_array(NULL, int, nprocs);
+
+	struct timeval now, last, start;
+	int i, delta;
+
+	torture_assert(tctx, nprocs > 0, "bad proc count");
+	torture_assert(tctx, timelimit > 0, "bad timelimit");
+	torture_assert(tctx, curr_counts, "allocation failure");
+	torture_assert(tctx, last_counts, "allocation failure");
+
+	start = last = timeval_current();
+	for (i = 0; i < nprocs; ++i) {
+		fork_tcon_client(tctx, &curr_counts[i], timelimit, host, share);
+	}
+
+	while (children_remain()) {
+
+		sleep(1);
+		now = timeval_current();
+
+		for (i = 0, delta = 0; i < nprocs; ++i) {
+			delta += curr_counts[i] - last_counts[i];
+		}
+
+		printf("%u connections/sec\n",
+			(unsigned)rate_convert_secs(delta, &last, &now));
+
+		memcpy(last_counts, curr_counts, nprocs * sizeof(int));
+		last = timeval_current();
+	}
+
+	now = timeval_current();
+
+	for (i = 0, delta = 0; i < nprocs; ++i) {
+		delta += curr_counts[i];
+	}
+
+	printf("TOTAL: %u connections/sec over %u secs\n",
+			(unsigned)rate_convert_secs(delta, &start, &now),
+			timelimit);
+	return true;
+}
+
+/* vim: set sts=8 sw=8 : */