Speed test script

.gitignore

 build/
 README.html
-.svn
 test.db
 .lock-wscript
-
+speedtest.db

speedtest.js

+// Speed test for SQL. Based on http://www.sqlite.org/speed.html
+
+var sys = require("sys");
+var posix = require("posix");
+
+try {
+  posix.unlink("speedtest.db").wait();
+} catch (e) {
+  // Not there? That's okay.
+}
+
+function connect() {
+  if (true) {
+    // node-sqlite
+    var sqlite = require("./sqlite");
+    var db = sqlite.openDatabaseSync("speedtest.db");
+  } else {
+    // node-persistence
+    // TODO: this doesn't work yet
+    var sqlite = require("../../lib/node-persistence/lib/persistence/sqlite");
+    var db = sqlite.new_connection("speedtest.db");
+    db.executeSql = db.query;
+    db.transaction = function(callback) {
+      this.query("BEGIN TRANSACTION;");
+      callback(this);
+      this.query("COMMIT");
+    }
+  }
+  return db;
+}
+
+function _rome(dn, ds) {
+  if (n < dn) return false;
+  n -= dn;
+  s += ds;
+  return true;
+}
+
+function toRoman(n) {
+  if (isNaN(n)) return n;
+  if (n <= 0) return "N";
+  s = "";
+  while (_rome(1000, "M")) {}
+  _rome(900, "CM");
+  _rome(500, "D");
+  _rome(400, "CD");
+  while (_rome(100, "C")) {}
+  _rome(90, "XC");
+  _rome(50, "L");
+  _rome(40, "XL");
+  while (_rome(10, "X")) {}
+  _rome(9, "IX");
+  _rome(5, "V");
+  _rome(4, "IV");
+  while (_rome(1, "I")) {}
+  return s;
+}
+
+var db;
+
+var SECTION;
+var LASTTIME;
+function time(section) {
+  if (db) db.close();
+  db = connect();
+  var now = (new Date()).getTime();
+  if (SECTION) {
+    var elapsed = ((now - LASTTIME)/1000.0).toFixed(3);
+    sys.puts(elapsed + ' ' + SECTION);
+  }
+  SECTION = section;
+  LASTTIME = now;
+}
+
+time("Test 1: 1000 INSERTs");
+db.query("CREATE TABLE t1(a INTEGER, b INTEGER, c VARCHAR(100));");
+for (var i = 0; i < 1000; ++i) {
+  var n = Math.floor(Math.random() * 99999);
+  db.query("INSERT INTO t1 VALUES(?,?,?);", [i, n, toRoman(n)]);
+}
+
+time("Test 2: 25000 INSERTs in a transaction");
+db.transaction(function (tx) {
+  tx.executeSql("CREATE TABLE t2(a INTEGER, b INTEGER, c VARCHAR(100));");
+  for (var i = 0; i < 25000; ++i) {
+    var n = Math.floor(Math.random() * 99999);
+    db.query("INSERT INTO t2 VALUES(?,?,?);", [i, n, toRoman(n)]);
+  }
+});
+
+time("Test 3: 25000 INSERTs into an indexed table");
+db.transaction(function (tx) {
+  tx.executeSql("CREATE TABLE t3(a INTEGER, b INTEGER, c VARCHAR(100));");
+  tx.executeSql("CREATE INDEX i3 ON t3(c);");
+  for (var i = 0; i < 25000; ++i) {
+    var n = Math.floor(Math.random() * 99999);
+    db.query("INSERT INTO t3 VALUES(?,?,?);", [i, n, toRoman(n)]);
+  }
+});
+
+time("Test 4: 100 SELECTs without an index");
+db.transaction(function (tx) {
+  for (var i = 0; i < 100; ++i) {
+    db.query("SELECT count(*), avg(b) FROM t2 WHERE b>=? AND b<?;", 
+             [i * 100, i * 100 + 1000]);
+  }
+});
+
+time("Test 5: 100 SELECTs on a string comparison");
+db.transaction(function (tx) {
+  for (var i = 0; i < 100; ++i) {
+    db.query("SELECT count(*), avg(b) FROM t2 WHERE c LIKE ?;",
+             ['%' + toRoman(i) + '%']);
+  }
+});
+
+time("Test 6: Creating an index");
+db.query("CREATE INDEX i2a ON t2(a);");
+db.query("CREATE INDEX i2b ON t2(b);");
+
+time("Test 7: 5000 SELECTs with an index");
+for (var i = 0; i < 5000; ++i) 
+  db.query("SELECT count(*), avg(b) FROM t2 WHERE b>=? AND b<?;", 
+           [i * 100, (i+1) * 100]);
+  
+
+time("Test 8: 1000 UPDATEs without an index");
+db.transaction(function (tx) {
+  for (var i = 0; i < 1000; ++i)
+    tx.executeSql("UPDATE t1 SET b=b*2 WHERE a>=? AND a<?", 
+                  [i * 10, (i+1) * 10]);
+});
+
+time("Test 9: 25000 UPDATEs with an index");
+db.transaction(function (tx) {
+  for (var i = 0; i < 25000; ++i) {
+    var n = Math.floor(Math.random() * 1000000);
+    tx.executeSql("UPDATE t2 SET b=? WHERE a=?", [n, i]);
+  }
+});
+
+time("Test 10: 25000 text UPDATEs with an index");
+db.transaction(function (tx) {
+  for (var i = 0; i < 25000; ++i) {
+    var n = Math.floor(Math.random() * 1000000);
+    tx.executeSql("UPDATE t2 SET c=? WHERE a=?", [toRoman(n), i]);
+  }
+});
+
+time("Test 11: INSERTs from a SELECT");
+db.transaction(function (tx) {
+  tx.executeSql("INSERT INTO t1 SELECT b,a,c FROM t2;");
+  tx.executeSql("INSERT INTO t2 SELECT b,a,c FROM t1;");
+});
+
+time("Test 12: DELETE without an index");
+db.query("DELETE FROM t2 WHERE c LIKE '%fifty%';");
+
+time("Test 13: DELETE with an index");
+db.query("DELETE FROM t2 WHERE a>10 AND a<20000;");
+
+time("Test 14: A big INSERT after a big DELETE");
+db.query("INSERT INTO t2 SELECT * FROM t1;");
+
+time("Test 15: A big DELETE followed by 12000 small INSERTs");
+db.transaction(function (tx) {
+  tx.executeSql("DELETE FROM t1;");
+  for (var i = 0; i < 12000; ++i) {
+    var n = Math.floor(Math.random() * 100000);
+    tx.executeSql("INSERT INTO t1 VALUES(?,?,?);", [i, n, toRoman(n)]);
+  }
+});
+
+time("Test 16: DROP TABLE");
+db.query("DROP TABLE t1;");
+db.query("DROP TABLE t2;");
+db.query("DROP TABLE t3;");
+
+time();
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