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#!/usr/bin/perl
use strict;
use warnings;

print "Processing ${ARGV[0]}, filtering domain ${ARGV[1]}\n";
open INPUT, ${ARGV[0]} or die $!;
open OUTPUT, ">${ARGV[0]}.filtered.xml" or die $!;

my $skip = 0;
while (my $line = <INPUT>) {

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import java.util.*;
import java.text.*;
import org.json.*;
import io.jsonwebtoken.*
import org.apache.commons.codec.binary.Base64;
import com.google.gson.JsonObject;

// get JWT secret key from params
String [] params = Parameters.split(",");
String secret_key = params[0];

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import java.util.*;
import java.text.*;
import org.json.*;
import io.jsonwebtoken.*
import org.apache.commons.codec.binary.Base64;

// get JWT secret key and response value (to check response against it) from params
String [] params = Parameters.split(",");
String secret_key = params[0];
String status = params[1];

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Install tsung centos 7

yum -y install erlang perl perl-RRD-Simple.noarch perl-Log-Log4perl-RRDs.noarch gnuplot perl-Template-Toolkit
wget http://tsung.erlang-projects.org/dist/tsung-1.6.0.tar.gz
tar xfz tsung-1.6.0.tar.gz
cd tsung-1.6.0
./configure && make && make install

mkdir /root/.tsung

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yum -y install erlang perl perl-RRD-Simple.noarch perl-Log-Log4perl-RRDs.noarch gnuplot perl-Template-Toolkit firefox

wget http://tsung.erlang-projects.org/dist/tsung-x.x.x.tar.gz

tar zxfv  tsung-1.4.2.tar.gz
cd tsung-1.4.2
./configure && make && make install

cp  /usr/share/doc/tsung/examples/http_simple.xml /root/.tsung/tsung.xml

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Socket's IP and Port

One socket connection's address have the quadruple :

{SrcIP, SrcPort, DstIP, DstPort}

One socket original address combine with {SrcIP, SrcPort}:

• M avaliable SrcIPs
• N avaliable SrtPorts
• you can create (M * N) connections

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NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400,000 to 500,000 requests per second (clustered), most what i saw is 50,000 to 80,000 (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

• Stable version NGINX (deb/rpm)
• Mainline version NGINX (deb/rpm)

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tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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Step by step guide to setting up IDEA to write gatling simulations

Prerequisites:

Have [SBT plugin][sbt-plugin] installed

Begin

• [Create a new project][create-project] in IDEA ( File > New Project ...)
  • Make sure you select a maven module

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---

title: "Open Files Limit" description: "" project: "riak_kv" project_version: "2.2.3" menu: riak_kv-2.2.3: name: "Open Files Limit" identifier: "performance_open_files_limit" weight: 101