Shantanu Bhardwaj shanbhardwaj
shanbhardwaj
/ latency.txt
Created
June 1, 2012 17:18
— forked from jboner/latency.txt
Latency numbers every programmer should know
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| 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 | |
| Send 1K bytes over 1 Gbps network 10,000 ns 0.01 ms | |
| SSD random read 150,000 ns | |
| Read 1 MB sequentially from memory 250,000 ns 0.25 ms | |
| Round trip within same datacenter 500,000 ns 0.5 ms |
shanbhardwaj
/ getemacs.sh
Created
November 27, 2011 07:26
full screen emacs 24 on osx snow leopard/lion
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| # Git Emacs 24 from the main Savannah (savannah.gnu.org) repository and apply typester's fullscreen patch | |
| rm -fr emacs | |
| git clone git://git.savannah.gnu.org/emacs.git | |
| cd emacs | |
| wget http://cloud.github.com/downloads/typester/emacs/feature-fullscreen.patch | |
| patch -p1 -i feature-fullscreen.patch | |
| cd .. | |
| curl -O http://ftp.gnu.org/gnu/m4/m4-1.4.13.tar.gz | |
| tar -xzvf m4-1.4.13.tar.gz | |
| cd m4-1.4.13 |
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