vongosling

LInux

Three system configuration parameters must be set to support a large number of open files and TCP connections with large bursts of messages. Changes can be made using the /etc/rc.d/rc.local or /etc/sysctl.conf script to preserve changes after reboot.

1. /proc/sys/fs/file-max: The maximum number of concurrently open files.

fs.file-max = 1000000

2. /proc/sys/net/ipv4/tcp_max_syn_backlog: Maximum number of remembered connection requests, which are still did not receive an acknowledgment from connecting client. The default value is 1024 for systems with more than 128Mb of memory, and 128 for low memory machines.

net.ipv4.tcp_max_syn_backlog = 3240000

3. /proc/sys/net/core/somaxconn: Limit of socket listen() backlog, known in userspace as SOMAXCONN. Defaults to 128.

net.core.somaxconn = 3240000

Kudusch

<?php
/*
Made by Kudusch (blog.kudusch.de, kudusch.de, @Kudusch)

---------

DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE 
                    Version 2, December 2004 

Copyright (C) 2004 Sam Hocevar <[email protected]>

alandipert

# /etc/network/interfaces
# Configured for bridging wifi<->ethernet

# Tested with:
# - RPi Model B Rev. 1
# - 2013-02-09-wheezy-raspbian
# - Edimax 8192-series USB wireless adapter
#   - /etc/modprobe.d/8192cu.conf contents:
#   - options 8192cu rtw_power_mgnt=0 rtw_enusbss=0
# - firmware: c2d133fb4efe9c9995da7fd7e1c45d74254f5c4b

bradoaks

#!/bin/bash

# As the "bufferbloat" folks have recently re-discovered and/or more widely
# publicized, congestion avoidance algorithms (such as those found in TCP) do
# a great job of allowing network endpoints to negotiate transfer rates that
# maximize a link's bandwidth usage without unduly penalizing any particular
# stream. This allows bulk transfer streams to use the maximum available
# bandwidth without affecting the latency of non-bulk (e.g. interactive)
# streams.

agaoglu

import os

descriptors = list()

def getString():
    test_file = "nvidia-smi -q --gpu=0 | tail -23"
 
    try:
        p = os.popen(test_file, 'r')
        return p.read()