devel.rst
changeset 1894 2e3bc2435d68
parent 1893 da0024f4f068
child 1895 91e537a35a34
--- a/devel.rst	Sat Feb 20 15:20:24 2016 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,17 +0,0 @@
--*- mode: outline; coding: utf-8 -*-
-
-* 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