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wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add - | |
sudo sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list' | |
sudo apt-get update | |
sudo apt-get install google-chrome-stable |
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<?php | |
// http://en.wikipedia.org/wiki/ISO_4217 | |
return array( | |
'AFA' => array('Afghan Afghani', '971'), | |
'AWG' => array('Aruban Florin', '533'), | |
'AUD' => array('Australian Dollars', '036'), | |
'ARS' => array('Argentine Pes', '032'), | |
'AZN' => array('Azerbaijanian Manat', '944'), |
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from MySQLdb import connect | |
conn = connect(user="[USER]", passwd= "[PASSWORD]") | |
cur = conn.cursor() | |
cur.execute("show databases;") | |
dbs_to_update = filter( | |
lambda db: db not in ('information_schema', 'mysql', 'performance_schema'), | |
[dbname[0] for dbname in cur.fetchall()]) |
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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 |