| #!/bin/sh | |
| START=`date +%s%N` | |
| # Do stuff here | |
| END=`date +%s%N` | |
| ELAPSED=`echo "scale=8; ($END - $START) / 1000000000" | bc` |
git config --global alias.hist "log --pretty=format:'%h %ad | %s%d [%an]' --graph --date=short"
git config --global alias.lol "log --graph --decorate --pretty=oneline --abbrev-commit --all"
git config --global alias.mylog "log --pretty=format:'%h %s [%an]' --graph"
To check that they've been added correctly, first run git config --list. You should see something like this in the midst of all your other configuration:
alias.hist=log --pretty=format:"%h %ad | %s%d [%an]" --graph --date=short
| #!/usr/bin/env python | |
| # | |
| # Copyright 2012 Patrick Hetu <[email protected]> | |
| # | |
| # This program is free software: you can redistribute it and/or modify | |
| # it under the terms of the GNU General Public License as published by | |
| # the Free Software Foundation, either version 3 of the License, or | |
| # (at your option) any later version. | |
| # | |
| # This program is distributed in the hope that it will be useful, |
| 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 |