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Funny Tech Tweets | |
================= | |
### Corny ### | |
I know a programming joke about 10,000 mutexes, but it's a bit contentious. | |
--@secboffin | |
I also have a UDP joke. But you might not get it. | |
--@jonathanstray |
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-- {{{ | |
-- | |
-- Autostarting for Awesome <3.4! | |
-- Add this section to the end of your rc.lua | |
-- configuration file within ~/.config/awesome/rc.lua | |
-- | |
-- If you're using Awesome 3.5 change: | |
-- add_signal -> connect_signal | |
-- remove_signal --> disconnect_signal | |
-- |
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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 |