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@ecin
ecin / goarena.go
Created August 31, 2012 17:34
Dtrace probes in your Golang code
package main
/*
Ping vs Pong: A Gladiatorial Match
Two goroutines enter, only one leaves...
*/
/*
#cgo LDFLAGS: -lprobes -L/usr/local/lib
#include "probes.h"
@jfhbrook
jfhbrook / git-commit-prefixes
Created July 20, 2012 22:12 — forked from blakmatrix/git-commit-prefixes
Short list of Git commit prefixes used at Nodejitsu
[api]: New apis / changes to apis
[test]: Update test/* files
[dist]: Changes to submodules, version bumps, updates to package.json
[minor]: Small changes
[doc]: Updates to documentation
[ux]: Updates to UX
[fix]: Bug fixes
[bin]: Update binary scripts associated with the project
[merge]: Resolved git merge from upstream or otherwise
[refactor]: Refactor of existing code with no external API changes
@jboner
jboner / latency.txt
Last active May 5, 2024 03:12
Latency Numbers Every Programmer Should Know
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