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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
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var parser = document.createElement('a'); | |
parser.href = "http://example.com:3000/pathname/?search=test#hash"; | |
parser.protocol; // => "http:" | |
parser.hostname; // => "example.com" | |
parser.port; // => "3000" | |
parser.pathname; // => "/pathname/" | |
parser.search; // => "?search=test" | |
parser.hash; // => "#hash" | |
parser.host; // => "example.com:3000" |
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# First verify the version of Java being used is not SunJSK. | |
java -version | |
# Get the latest Sun Java SDK from Oracle http://www.oracle.com/technetwork/java/javase/downloads/jdk-7u1-download-513651.html | |
wget http://download.oracle.com/otn-pub/java/jdk/7u1-b08/jdk-7u1-linux-i586.rpm | |
# Rename the file downloaded, just to be nice | |
mv jdk-7u1-linux-i586.rpm\?e\=1320265424\&h\=916f87354faed15fe652d9f76d64c844 jdk-7u1-linux-i586.rpm | |
# Install Java |
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#!/usr/bin/env bash | |
# where do you want couchdb and its deps to be installed | |
COUCHDB_PREFIX="/opt/couchdb-1.0.1" | |
# Let's determine the correct arcitecture and choose the installer | |
if [ "`uname -m`" = "x86_64" ]; then | |
echo "Using 64-bit installer" | |
COUCHDB_INSTALLER_DOC_ID="26f246a0fe23d6a53d5326713308f43c" | |
COUCHDB_INSTALLER_BIN="install-couchdb-1.0.1_rel1-linux-x64.bin" |
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