simple write performance test

tests/Makefile.am

@@ -20,10 +20,12 @@ check_SCRIPTS = \
 check_PROGRAMS = \
 	c_api \
 	c_thread_api \
-	fsx
+	fsx \
+	c_perf
 
 c_api_SOURCES = c_api.c
 c_thread_api_SOURCES = c_thread_api.c
+c_perf_SOURCES = c_perf.c
 fsx_SOURCES = fsx.c
 
 if WITH_SQLCIPHER

tests/c_perf.c

@@ -0,0 +1,69 @@
+#include "common.c"
+
+#define WRITESZ 2*1048576
+//#define WRITESZ 32768
+#define STARTSZ 256
+#define ENDSZ 32768
+
+#define TIMING(t1,t2) \
+  (double) (t2.tv_usec - t1.tv_usec)/1000000 + \
+  (double) (t2.tv_sec - t1.tv_sec)
+
+void test_write_n_bytes_nosleep(sqlfs_t *sqlfs, int testsize)
+{
+    int i;
+    char testfilename[PATH_MAX];
+    char randomdata[testsize];
+    struct fuse_file_info fi = { 0 };
+    randomfilename(testfilename, PATH_MAX, "write_n_bytes");
+    sqlfs_proc_write(sqlfs, testfilename, randomdata, testsize, 0, &fi);
+}
+
+int main(int argc, char *argv[])
+{
+    char *database_filename = "c_perf.db";
+    int rc, size, i;
+    sqlfs_t *sqlfs = 0;
+    struct timeval tstart, tstop;
+
+    if(argc > 1)
+      database_filename = argv[1];
+    if(exists(database_filename))
+       printf("%s exists.\n", database_filename);
+    printf("Opening %s\n", database_filename);
+    sqlfs_init(database_filename);
+    printf("Running tests:\n");
+
+    rc = sqlfs_open(database_filename, &sqlfs);
+    printf("Opening database...");
+    assert(rc);
+    printf("passed\n");
+
+    for (size=STARTSZ; size <= ENDSZ ; size *= 2) {
+        gettimeofday(&tstart, NULL);
+        for(i = 0; i < WRITESZ / size; i++) {
+          test_write_n_bytes_nosleep(sqlfs, size);
+        }
+        gettimeofday(&tstop, NULL);
+        printf("**** wrote %d bytes in %d %d byte chunks without transaction in %f seconds\n", 
+          WRITESZ, WRITESZ / size, size, TIMING(tstart,tstop));
+    }
+
+    for (size=STARTSZ; size <= ENDSZ ; size *= 2) {
+        gettimeofday(&tstart, NULL);
+        sqlfs_begin_transaction(sqlfs);
+        for(i = 0; i < WRITESZ / size; i++) {
+          test_write_n_bytes_nosleep(sqlfs, size);
+        }
+        sqlfs_complete_transaction(sqlfs,1);
+        gettimeofday(&tstop, NULL);
+        printf("**** wrote %d bytes in %d %d byte chunks with transaction in %f seconds\n", 
+          WRITESZ, WRITESZ / size, size, TIMING(tstart,tstop));
+    }
+
+    printf("Closing database...");
+    sqlfs_close(sqlfs);
+    printf("done\n");
+    return 0;
+}
+

tests/c_perf.test

@@ -0,0 +1,15 @@
+## -*- sh -*-
+## template for running a test C program
+
+# Common definitions
+if test -z "$srcdir"; then
+    srcdir=`echo "$0" | sed 's,[^/]*$,,'`
+    test "$srcdir" = "$0" && srcdir=.
+    test -z "$srcdir" && srcdir=.
+    test "${V+set}" != set && V=1
+fi
+. $srcdir/defs
+
+test="$testdir/$testname"
+echo "Running $test"
+"$test" "$testsubdir/$testname.db"