r20092: added a locking benchmark that should be good for benchmarking

communitcation in a CIFS clustered server. It tries to keep the
connections full by setting up the next lock as each lock is done.

The locking pattern is similar to the local filesystem ping pong test
in junkcode, forcing a communication between nodes on each request
(This used to be commit d57b9fb29860bd03cfa970bcc52ef45d17775638)

1 files changed, 196 insertions, 0 deletions

diff --git a/source4/torture/raw/lockbench.c b/source4/torture/raw/lockbench.c
new file mode 100644
index 0000000000..04a3f92c93
--- /dev/null
+++ b/source4/torture/raw/lockbench.c
@@ -0,0 +1,196 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   locking benchmark
+
+   Copyright (C) Andrew Tridgell 2006
+   
+   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
+   (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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "torture/torture.h"
+#include "libcli/raw/libcliraw.h"
+#include "system/time.h"
+#include "system/filesys.h"
+#include "libcli/libcli.h"
+#include "torture/util.h"
+#include "lib/events/events.h"
+#include "lib/cmdline/popt_common.h"
+
+#define CHECK_STATUS(status, correct) do { \
+	if (!NT_STATUS_EQUAL(status, correct)) { \
+		printf("(%s) Incorrect status %s - should be %s\n", \
+		       __location__, nt_errstr(status), nt_errstr(correct)); \
+		goto failed; \
+	}} while (0)
+
+#define BASEDIR "\\benchlock"
+#define FNAME BASEDIR "\\lock.dat"
+
+static int nprocs;
+static int lock_failed;
+
+struct benchlock_state {
+	struct smbcli_state *cli;
+	int fnum;
+	int offset;
+	int count;
+	union smb_lock io;
+	struct smb_lock_entry lock[2];
+	struct smbcli_request *req;
+};
+
+static void lock_completion(struct smbcli_request *);
+
+/*
+  send the next lock request
+*/
+static void lock_send(struct benchlock_state *state)
+{
+	state->io.lockx.in.file.fnum = state->fnum;
+	state->io.lockx.in.ulock_cnt = 1;
+	state->lock[0].pid = state->cli->session->pid;
+	state->lock[1].pid = state->cli->session->pid;
+	state->lock[0].offset = state->offset;
+	state->lock[1].offset = (state->offset+1)%nprocs;
+	state->req = smb_raw_lock_send(state->cli->tree, &state->io);
+	if (state->req == NULL) {
+		DEBUG(0,("Failed to setup lock\n"));
+		lock_failed++;
+	}
+	state->req->async.private = state;
+	state->req->async.fn      = lock_completion;
+	state->offset = (state->offset+1)%nprocs;
+}
+
+/*
+  called when a lock completes
+*/
+static void lock_completion(struct smbcli_request *req)
+{
+	struct benchlock_state *state = (struct benchlock_state *)req->async.private;
+	NTSTATUS status = smbcli_request_simple_recv(req);
+	if (!NT_STATUS_IS_OK(status)) {
+		lock_failed++;
+		DEBUG(0,("Lock failed - %s\n", nt_errstr(status)));
+	} else {
+		state->count++;
+		lock_send(state);
+	}
+}
+
+/* 
+   benchmark locking calls
+*/
+BOOL torture_bench_lock(struct torture_context *torture)
+{
+	BOOL ret = True;
+	TALLOC_CTX *mem_ctx = talloc_new(torture);
+	int i;
+	int timelimit = torture_setting_int(torture, "timelimit", 10);
+	struct timeval tv;
+	struct event_context *ev = event_context_find(mem_ctx);
+	struct benchlock_state *state;
+	int total = 0, loops=0;
+	NTSTATUS status;
+	
+	nprocs = lp_parm_int(-1, "torture", "nprocs", 4);
+
+	state = talloc_zero_array(mem_ctx, struct benchlock_state, nprocs);
+
+	printf("Opening %d connections\n", nprocs);
+	for (i=0;i<nprocs;i++) {
+		if (!torture_open_connection_ev(&state[i].cli, i, ev)) {
+			return False;
+		}
+		talloc_steal(mem_ctx, state);
+	}
+
+	if (!torture_setup_dir(state[0].cli, BASEDIR)) {
+		goto failed;
+	}
+
+	for (i=0;i<nprocs;i++) {
+		state[i].fnum = smbcli_open(state[i].cli->tree, 
+					    FNAME, 
+					    O_RDWR|O_CREAT, DENY_NONE);
+		if (state[i].fnum == -1) {
+			printf("Failed to open %s on connection %d\n", FNAME, i);
+			goto failed;
+		}
+
+		state[i].io.lockx.level = RAW_LOCK_LOCKX;
+		state[i].io.lockx.in.mode = LOCKING_ANDX_LARGE_FILES;
+		state[i].io.lockx.in.timeout = 100000;
+		state[i].io.lockx.in.ulock_cnt = 0;
+		state[i].io.lockx.in.lock_cnt = 1;
+		state[i].lock[0].count = 1;
+		state[i].lock[1].count = 1;
+		state[i].io.lockx.in.locks = &state[i].lock[0];
+
+		state[i].offset = i;
+		state[i].io.lockx.in.file.fnum = state[i].fnum;
+		state[i].lock[0].offset = state[i].offset;
+		state[i].lock[0].pid    = state[i].cli->session->pid;
+		status = smb_raw_lock(state[i].cli->tree, &state[i].io);
+		CHECK_STATUS(status, NT_STATUS_OK);
+	}
+
+	for (i=0;i<nprocs;i++) {
+		lock_send(&state[i]);
+	}
+
+	tv = timeval_current();	
+
+	printf("Running for %d seconds\n", timelimit);
+	while (timeval_elapsed(&tv) < timelimit) {
+		event_loop_once(ev);
+
+		if (lock_failed) {
+			DEBUG(0,("locking failed\n"));
+			goto failed;
+		}
+
+		if (loops++ % 10 != 0) continue;
+
+		total = 0;
+		for (i=0;i<nprocs;i++) {
+			total += state[i].count;
+		}
+		printf("%.2f ops/second\r", total/timeval_elapsed(&tv));
+		fflush(stdout);
+	}
+
+	printf("%.2f ops/second\n", total/timeval_elapsed(&tv));
+
+	for (i=0;i<nprocs;i++) {
+		talloc_free(state[i].req);
+		smb_raw_exit(state[i].cli->session);
+	}
+
+	smbcli_deltree(state[0].cli->tree, BASEDIR);
+	talloc_free(mem_ctx);
+	return ret;
+
+failed:
+	for (i=0;i<nprocs;i++) {
+		talloc_free(state[i].req);
+		smb_raw_exit(state[i].cli->session);
+	}
+	smbcli_deltree(state[0].cli->tree, BASEDIR);
+	talloc_free(mem_ctx);
+	return False;
+}