diff -r 78357d58b7ab -r fba288d59662 devel.rst
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devel.rst	Mon Feb 22 12:46:36 2016 +0200
@@ -0,0 +1,26 @@
+.. -*- coding: utf-8; -*-
+.. include:: HEADER.rst
+
+=============
+ Development
+=============
+.. contents::
+   :local:
+
+Numbers everyone should know
+============================
+
+ * L1 cache reference 0.5 ns
+ * Branch mispredict 5 ns
+ * L2 cache reference 7 ns
+ * Mutex lock/unlock 100 ns
+ * Main memory reference 100 ns
+ * Compress 1K bytes with Zippy 10,000 ns
+ * Send 2K bytes over 1 Gbps network 20,000 ns
+ * Read 1 MB sequentially from memory 250,000 ns
+ * Round trip within same datacenter 500,000 ns
+ * Disk seek 10,000,000 ns
+ * Read 1 MB sequentially from network 10,000,000 ns
+ * Read 1 MB sequentially from disk 30,000,000 ns
+ * Send packet CA->Netherlands->CA 150,000,000 ns
+