jboner

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

ruario

Setting up a "small" Slackware install

Intro

Before you do this, reconsider if it is really needed. More often than not, it isn't. This is why.

A common reason for attempting a minimal install is an expectation that Slackware will run faster. This is not true. Some example, (IMHO) valid, reasons for stripping back the install include:

• Installing on a device with limited disk space, where it is hard to add additional storage
• A setup where there is an ongoing cost to rent disk space (e.g. a Virtual Private Server)

hlissner

# ag <https://github.com/ggreer/the_silver_searcher>
# usage: ag-replace.sh [search] [replace]
# caveats: will choke if either arguments contain a forward slash
# notes: will back up changed files to *.bak files

ag -0 -l $1 | xargs -0 perl -pi.bak -e "s/$1/$2/g"

# or if you prefer sed's regex syntax:

ag -0 -l $1 | xargs -0 sed -ri.bak -e "s/$1/$2/g"

gubatron

Things to remember when compiling/linking C/C++ software

by Angel Leon. March 17, 2015;

Last update on December 14, 2023

Updated on February 27, 2023

Updated August 29, 2019.

mishurov

# --------
# Hardware
# --------

# Opcode - operational code
# Assebly mnemonic - abbreviation for an operation

# Instruction Code Format (IA-32)
# - Optional instruction prefix
# - Operational code

stanislaw

//
//  utf8.c
//  training
//
//  Created by Conrad Kleinespel on 5/27/13.
//  Copyright (c) 2013 Conrad Kleinespel. All rights reserved.
//

#include <stdio.h>
#include <stdlib.h>

mamonu

qemu-img convert -O vdi gnome.qcow2 gnome.vdi


#if its a raw image then:
VBoxManage convertdd opnstk.raw VBox.vdi --format VDI

jsoffer

/*
   Copyright (c) 2009, David Anderson; 2016, Jaime Soffer.
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright
 notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the

jbovet

#!/bin/bash

# mirror_test.sh
# Originally written for Ubuntu by Lance Rushing <lance_rushing@hotmail.com>
# Dated 9/1/2006
# Taken from http://ubuntuforums.org/showthread.php?t=251398
# This script is covered under the GNU Public License: http://www.gnu.org/licenses/gpl.txt

# Modified for Slackware by Jeremy Brent Hansen <jebrhansen -at- gmail.com>
# Modified 2015/11/06

klgraham

#include <stdio.h>
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include "luajit.h"

int main(int argc, char *argv[])
{
  int status;
  lua_State *L;