JPvRiel

Overview

Some notes about:

• Explaining why current day Linux memory swap thrashing still happens (as of 2016).
• Mitigating "stop the world" type thrashing issues on a Linux workstation when it's under high memory pressure and where responsiveness is more important than process completion.
• Prioritizing and limiting memory use.
• Older ulimit versus newer CGroup options.

These notes assume some basic background knowledge about memory management, ulimits and cgroups.

copperlight

# ... more above ...

# wsfl bash is not a login shell
if [ -d "$HOME/bin" ] ; then
    PATH="$HOME/bin:$PATH"
fi

# ssh-agent configuration
if [ -z "$(pgrep ssh-agent)" ]; then
    rm -rf /tmp/ssh-*

r0l1

/* MIT License
 *
 * Copyright (c) 2017 Roland Singer [roland.singer@desertbit.com]
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:

beugley

Run time performance of your SAS process can be greatly improved with parallel execution.
This gist describes an approach where your input data set(s) are divided into N equal-sized subsets and your code is
executed in parallel against each subset.  For information on other methods of parallel processing, please see this page
from SAS Support: http://support.sas.com/rnd/scalability/tricks/connect.html


Step 1
Divide your input data set(s) into N subsets that are approximately equal in size.  The following macro shows one way to
do this.
  %macro DIVIDE_INPUT_DATA(N);

sankarara

; This is part of my AutoHotkey [1] script that turns off my monitor when I
; press Win+\.

; It also turns the screensaver on at the same time, so that Windows Live
; Messenger (and any other programs) know I am away.

; I don't have a password on my screensaver, so there is a second version
; (Win+Shift+\) that locks the PC as well.

; Note: Sometimes the monitor comes back on after a second and I have to

drmalex07

README

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target

heathermiller

This cheat sheet originated from the forum, credits to Laurent Poulain. We copied it and changed or added a few things.

Evaluation Rules

• Call by value: evaluates the function arguments before calling the function
• Call by name: evaluates the function first, and then evaluates the arguments if need be

    def example = 2      // evaluated when called
    val example = 2      // evaluated immediately

gtallen1187

"Scar Tissues Make Relationships Wear Out"

04/26/2103. From a lecture by Professor John Ousterhout at Stanford, class CS142.

This is my most touchy-feely thought for the weekend. Here’s the basic idea: It’s really hard to build relationships that last for a long time. If you haven’t discovered this, you will discover this sooner or later. And it's hard both for personal relationships and for business relationships. And to me, it's pretty amazing that two people can stay married for 25 years without killing each other.

[Laughter]

> But honestly, most professional relationships don't last anywhere near that long. The best bands always seem to break up after 2 or 3 years. And business partnerships fall apart, and there's all these problems in these relationships that just don't last. So, why is that? Well, in my view, it’s relationships don't fail because there some single catastrophic event to destroy them, although often there is a single catastrophic event around the the end of the relation

cnDelbert

To install tcptraceroute on Debian/Ubuntu:

$ sudo apt-get install tcptraceroute

To install tcptraceroute on CentOS/REHL, first set up RepoForge on your system, and then:

$ sudo yum install tcptraceroute

st-j

#include <ctime>
#include <iostream>

#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>


//==============================================================================
//! Convert date part of Unix timestamp (time_t) to boost date
//!