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@vancluever
vancluever / amifind.sh
Created January 26, 2016 08:05
Find the most recent Ubuntu AMI using aws-cli (or any other AMI for that matter)
#!/bin/sh
# Use AWS CLI to get the most recent version of an AMI that
# matches certain criteria. Has obvious uses. Made possible via
# --query, --output text, and the fact that RFC3339 datetime
# fields are easily sortable.
export AWS_DEFAULT_REGION=us-east-1
aws ec2 describe-images \
@odan
odan / xampp_php7_xdebug.md
Last active March 7, 2024 21:27
Installing Xdebug for XAMPP
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs