| 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 |
| (defun sublime-text-2 () | |
| (interactive) | |
| (color-theme-install | |
| '(sublime-text-2 | |
| ((background-color . "#171717") | |
| (background-mode . light) | |
| (border-color . "#1a1a1a") | |
| (cursor-color . "#fce94f") | |
| (foreground-color . "#cfbfad") | |
| (mouse-color . "black")) |
Once upon a time there was a user that wanted to install firefox.
The user tried to do pacman -S firefox but it didn't work. The all
mighty pacman reported that firefox-3.2.4-1.i686.pkg.tar.gz could not
be found on his mirror. So the user tried pacman -Sy firefox. It
worked and the user rejoiced since he could once again go and troll /h/.
But all was not good. The user had made a grave error!
See, when the user told the almighty pacman to -Sy firefox, pacman did
This can reduce files to ~15% of their size (2.3M to 345K, in one case) with no obvious degradation of quality.
ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf
Other options for PDFSETTINGS:
| $ brew install git | |
| zsh: correct 'git' to '.git' [nyae]? n | |
| Warning: A newer Command Line Tools release is available | |
| Update them from Software Update in the App Store. | |
| ==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/git-1.8.4.2.mavericks.bottle.tar.gz | |
| Already downloaded: /Library/Caches/Homebrew/git-1.8.4.2.mavericks.bottle.tar.gz | |
| ==> Pouring git-1.8.4.2.mavericks.bottle.tar.gz | |
| ==> Caveats | |
| The OS X keychain credential helper has been installed to: | |
| /usr/local/bin/git-credential-osxkeychain |
| From 8ab91751069e391a95151c6716a546b1732ade92 Mon Sep 17 00:00:00 2001 | |
| From: JP <twitter:canoeberry> | |
| Date: Sun, 19 Jan 2014 11:58:54 +0000 | |
| Subject: [PATCH] partial memleak fix | |
| This patch was created by JP (twitter: @canoeberry) based on a memleak fix by Dirk (emacs committer) below: | |
| https://github.com/mirrors/emacs/commit/57ae6509a3b6a274f89b9caea0284c6156470625 | |
| This memory leak is fixed in the trunk as of now and will be in the next official release: 24.4. |
| #!/bin/sh | |
| set -e | |
| # sudo for install may not be necessary, depending on permissions in /usr/local | |
| curl -L -O http://download.zeromq.org/zeromq-4.0.4.tar.gz | |
| tar -xzf zeromq-4.0.4.tar.gz | |
| cd zeromq-4.0.4 | |
| ./configure |
This is a guide on how to email securely.
There are many guides on how to install and use PGP to encrypt email. This is not one of them. This is a guide on secure communication using email with PGP encryption. If you are not familiar with PGP, please read another guide first. If you are comfortable using PGP to encrypt and decrypt emails, this guide will raise your security to the next level.