This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package main | |
/* | |
Ping vs Pong: A Gladiatorial Match | |
Two goroutines enter, only one leaves... | |
*/ | |
/* | |
#cgo LDFLAGS: -lprobes -L/usr/local/lib | |
#include "probes.h" |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
[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 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
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 |
NewerOlder