Projects

Flowgrind

Flowgrind is a tool similar to iperf, netperf to measure throughput and other metrics for TCP. It features some unique characteristics which are of use when exploring the idiosyncrasies of wireless mesh networks.

ftpchunk

In a Long Fat Network (LFN) the Round Trip Time (RTT) and Bandwidth Delay Product (BDP) can affect throughput of a download. Normal FTP downloads suffer. This program reduces this problem by downloading chunks of a given file (slices of a given file) in parallel. A number of threads are used to ... [More] read at different offsets of a file on the FTP server. FTP REST command is used to retrieve content at a given offset within the file by a thread. Output can be to a single file or multiple "chunk" files in a directory which can be concatenated later. [Less]

apache-response-time

apache-response-time is a performance analysis tool for the apache web server. It's primary focus is on script response time. One approach to improving web site performance is for a different developer to improve one of the slowest scripts everyday. apache-response-time is ideally suited for ... [More] producing daily reports for this purpose. It will help you find long running, frequently accessed and large apache scripts. Analysis for a single scriptA selection from a performance analysis report for a single script: Script 2: scop.cgi Calls/s: 0.133 Throughput: 69.51k/s pct total min max avg 95% stddev median Calls 31.75 11462 Time 14.12 2123.07 0.12 2.23 0.19 0.44 0.25 0.15 Size 14.58 144.11M 7.34k 179.33k 12.87k 19.59k 5.41k 12.16k Time range [07/Sep/2009:00:00:01 +0100] to [07/Sep/2009:23:59:53 +0100] Min time: http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?&sunid=151351 Median time: http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?&sunid=20876 95th percentile: http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?&sunid=27844 Max time: http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?&sunid=153375 Min size: http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=47094 Median size: http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=139890 95th percentile: http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=24136 Max size: http://supfam.org/SUPERFAMILY/cgi-bin/scop.cgi?sunid=53931The main summary statistics are for apache response time (Time) and the Size of the script output. Description of statistial measures Links for the smallest, largest, slowest and fastest apache requests are provided for each script. Ranked script listBy default apache-response-time produces a ranked list of statistics for 10 scripts. Rank Calls Response time R/Call Size Script ==== ===== =============== ======= ======= ====== 1 21044 11966.72 79.60% 0.569 259.23M gene.cgi 2 11462 2123.07 14.12% 0.185 144.11M scop.cgi 3 1826 410.30 2.73% 0.225 15.28M model.cgi 4 1458 385.37 2.56% 0.264 476.34M gen_list.cgi 5 310 147.65 0.98% 0.476 93.73M taxonomic_gen_list.cgiThis list can be ordered by Calls, Response time, R/Call (reponse time per call) or Size. Further informationExample - typical apache-response-time output Installation - how to install the apache-reponse-time command Usage - apache-response-time usage examples Roadmap - List of future changes and features apache-response-time is ideal for running from a daily cron job. The mk-query-profiler tool, from the Maatkit mysql utilities package, has been influential on the development of apache-response-time. See alsoApacheTop - curses-based top-like display for Apache information, including requests per second, bytes per second, most popular URLs, etc. wtop and logrep - "top" for Apache and other webservers, plus powerful log grepping modlogslow apache module to provide measures of the time period used for handling each request by the current process Open Directory - Computers: Software: Internet: Site Management: Log Analysis: Freeware and Open Source List of web analytics software from wikipedia [Less]

tcpflowanalyser

tcpAnalyser is a tcp flow analyser. Given a tcp flow, where a flow is identified by ip address , source port number, dest ip address , dest port number, it groups packets into clusters and determines wether a given packet was a duplicate or a filler of a previous ( or the same ) group. It then ... [More] performs some computations and displays some aggregate statistics on the groups. Its helpful to analyse flow throughput or debug tcp performance issues. If you are using a binary tcpdump file it is important to convert it to ascii (tcpdump -nr ) before feeding it to the analyzer [Less]

threadnetperf

Threadnetperf is a highly customisable high performance multi-threaded network benchmarking tool

nuttcp

nuttcp is a network performance measurement tool intended for use by network and system managers. Its most basic usage is to determine the raw TCP (or UDP) network layer throughput by transferring memory buffers from a source system across an interconnecting network to a destination system, either ... [More] transferring data for a specified time interval, or alternatively transferring a specified number of bytes. In addition to reporting the achieved network throughput in Mbps, nuttcp also provides additional useful information related to the data transfer such as user, system, and wall-clock time, transmitter and receiver CPU utilization, and loss percentage (for UDP transfers). [Less]

killnet

Useful tool to test a (wireless) network link, in terms of throughput, packet loss, e2e delay, fairness. A TCP connection is setup for control on a certain channel (can be the same wireless channel or others) and a UDP runs on that or another channel, based on the synchronization at the TCP control ... [More] link. Transmitter and receiver are always synchronized via the TCP link [Less]