![]() ![]() Namebench is one of the simplest and oldest software to benchmark DNS servers. After all, it is free, lightweight, and portable. All in all, DNS Benchmark is a pretty good software to have in your repository. You have to manually set it on your OS or router. Unfortunately, DNS Benchmark doesn’t offer any way to set the DNS server directly. To benchmark the available DNS services, just click on the “Fastest DNS” button appearing at the left-hand side of the window. Of course, you can benchmark all the DNS services in the list with a single click. If you cannot find the DNS service you are looking for, you can add it with the name of your choice with just a few clicks. ![]() For instance, DNS Jumper has a pre-configured list of 27 different DNS services. Moreover, the software packs a lot of features within its small file size. The good thing about DNS Jumper is that it is not only lightweight but is also portable. Personally, it is one of the best when it comes to finding and setting fastest DNS on your system. Off all the software from Sordum, DNS Jumper is the one that I’m using for years. One such other developer who creates small, lightweight and free software is Sordum. If you are using Windows for any part of the time, you might be familiar or even used some free and small software from Sysinternals or Nirsoft utilities. g filename Output collected data to gnuplot format file.Best DNS Benchmarking Tools 1. S Do not show confidence estimators and warnings. X proxy:port Proxyserver and port number to use P attribute Add Basic Proxy Authentication, the attributes A attribute Add Basic WWW Authentication, the attributesĪre a colon separated username and password. H attribute Add Arbitrary header line, eg. z attributes String to insert as td or th attributes y attributes String to insert as tr attributes x attributes String to insert as table attributes v verbosity How much troubleshooting info to print T content-type Content-type header for POSTing, eg. p postfile File containing data to POST. b windowsize Size of TCP send/receive buffer, in bytes c concurrency Number of multiple requests to make n requests Number of requests to perform As you can see there are many useful options for outputting results, and sending additional data in the request. The usage info from the ab version installed on my Mac (v2.3) is listed below. You will also want to redirect the output to a file for each url using > filename For example: #!/bin/sh At the end of each line place an & this makes the command run in the background, and lets the next command start execution. Suppose you wanted to test multiple url's concurrently as well? You can do this by creating a shell script, with multiple ab calls. Concurrent requests are also a more natural simulation of load than loops. The main one is that it allows you to test how your code runs concurrently, this can help you identify any possible race conditions, or locking issues. So the next time you are tempted to whip out cfloop and GetTickCount to do some benchmarking on a piece of code, give ab a try, it's easy to use, and will yield much more realistic results.īecause ab supports concurrency, this has two big advantages over cfloop. ![]() Percentage of the requests served within a certain time (ms)Īs you can see this is very useful information, it returned requests at a rate of 52.94 requests per second, the fastest request was 175ms, the slowest 224ms Time per request: 18.888 (mean, across all concurrent requests) It will then generate output as follows: Concurrency Level: 10 Suppose we want to see how fast Yahoo can handle 100 requests, with a maximum of 10 requests running concurrently: ab -n 100 -c 10 If you are on windows and have Apache installed, you may also have ab.exe in your apache/bin folder. If you have access to a Mac or Linux server, chances are you may already have a really simple http load generating tool installed called Apache Bench, or ab. ![]()
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