hledat:

Performance monitoring and optimization

This project investigates theoretical and practical aspects of end-to-end performance of various networking applications. We do research and development in monitoring and traffic processing in high-speed networks.

Monitoring

Access to measurements in CESNET2 network and to measurements in GN2 network from the deployed monitoring tools is available. Requires CESNET CAAS username and password.

Developed hardware

MVTP-4k

MVTP-4k is a portable device for transmission of multiple high-definition video streams including 4k, 2k and HD over a 10 Gigabit Ethernet network.

Datasheet: mvtp-4K-v2.pdf
Contact: mvtp@cesnet.cz

MTPP40

MTPP40 is a programmable device for line-rate 40 Gb/s network monitoring, traffic generation or traffic processing. BERT (Bit Error Rate Test) firmware is available. Custom firmware can be provided. Transceivers for both 40 Gb/s (OC-192/STM-64) or 43 Gb/s (OTU3) can be used.

Datasheet: mtpp40.pdf
Contact: mtpp@cesnet.cz

MTPP10-V5

MTPP10-V5 is a user-reconfigurable device for line-rate 10 Gigabit Ethernet packet processing. It can be used for various monitoring tasks on 10 Gigabit Ethernet links or for real-time traffic processing, such as packet loss emulation. MTPP operates at full speed of 10 Gb/s under all conditions (for all packet sizes back-to-back).

Datasheet: mtpp10-v5.pdf
Contact: mtpp@cesnet.cz

Publications

Papers, conferences and workshops

• Aleš Friedl, Sven Ubik
  Experience with passive monitoring deployment in GEANT2 network
  TNC 2009 - Terena Networking Conference, 8-11 June 2009, Malaga.
  paper and slides
• Vladimír Smotlacha, Rita Pužmanová
  Elektronická časová razítka
  Connect!, ISSN 1211-3085, číslo 6, ročník 2009.
  
• Jiří Halák
  Multigigabit Network Traffic Processing
  FPL 2009, 19th Int. Conf. on Field Programmable Logic and Applications, IEEE, Poster session, 31.8.-2.9.2009, Prague.
  paper.
• Friedl Aleš, Ubik Sven, Kapravelos Alexandros, Polychronakis Michalis, Markatos Evangelos
  Realistic Passive Packet Loss Measurement for High-Speed Networks
  TMA'09 - Int. Workshop on Traffic Monitoring and Analysis, IFIP, 11 May 2009, Aachen, Germany.
  paper and slides.
• Jiří Halák, Sven Ubik
  MTPP - Modular Traffic Processing Platform
  12th IEEE Symposium on Design and Diagnostics of Electronic Systems, 15-17 April, Liberec.
  paper and slides.
• Sven Ubik, Petr Žejdl
  Dynamická rekonfigurace v monitorování vysokorychlostních sítí
  Professional Computing 4/2009, DCD Publishing, ISBN: 1214-5335.
  článek.
• Sven Ubik, Petr Žejdl
  Passive monitoring of 10 Gb/s lines with PC hardware
  TNC 2008 - Terena Networking Conference, 19-22 May 2008, Bruges.
  paper and slides
• Sven Ubik, Aleš Friedl, Stanislav Hotmar
  Quantification of traffic burstiness with MAPI middleware
  CESNET Conference 2008, 25-26 September 2008, Prague.
  paper and slides
• Petr Žejdl, Sven Ubik, Vladimir Macek, Arne Oslebo
  Traffic Classification for Portable Applications with Hardware Support
  WISES 2008 - Workshop on Intelligent Solutions in Embedded Systems, IEEE COMSOC,10-11 July 2008, Regensburg.
  paper
• Sven Ubik, Petr Žejdl
  Pasivní monitorování linek 10 Gb/s počítačem typu PC
  Sdělovací technika 6/2008.
  
• Vladimír Smotlacha, Jan Čermák, Juan Palacio
  On Calibration of Network Time Services
  V ITSA - International Symposium on Time Scale Algorithms, 29 April 2008, San Fernando
  slides

Technical reports

• Sven Ubik, Aleš Friedl
  Perfmon and Servmon: Monitoring operational status and resources of distributed computing systems
  CESNET Technical Report x/2008
  pdf

Older publications

2006 - 2007
2003 - 2005
2000 - 2002

Related projects

We take part in the following research projects and activities:

• GN3

We took part in the following past research projects:

• GN2
• LOBSTER
• SCAMPI
• TF-NGN task force

  PERT

  We take part in eduPERT (Performance Response and Enhancemen Team), which is part of the SA3 activity of the GN2 project.

  Developed software

  • Packetloss - passive monitoring of packet loss experienced by real network traffic. See paper. Contact about license: Sven Ubik.
  • ABW - passive monitoring of network link load in short timescales with detection of popular application-layer protocols. Uses trackflib library developed by ICS-FORTH. Distributed as part of DiMAPI middleware.
  • Psock library - Parallel implementation of sockets library to introduce parallel transfers into applications. Download: psock-0.2a.tgz
  • Bulk + AIMD patch - Stress-type throughput measurement (iperf-like) with real-time monitoring of TCP run-time variables. A patch to configure TCP congestion avoidance AIMD parameters (slope of additive increase and drop of multiplicative decrease) on per-socket basis. Presentation, technical report, code.
  • NIST Net deterministic patch - Provides deterministic packet loss and queue length for the popular emulation package NIST Net. Read README.Deterministic and then apply nistnet-2.0.12-deterministic.patch to NIST Net sources.
  • QoSplot - A tool for computing and plotting QoS characteristics. Latest version is qosplot-0.46.tgz.
    , see also README.

  NTP synchronization and one-way delay measurements

  • Vladimír Smotlacha. Accuracy of the Network Time Synchronization
  • Vladimír Smotlacha. The measurement of time synchronization accuracy
  • Vladimír Smotlacha. One-way delay measurement using NTP synchronization

  Team

  Aleš Friedl
  Jiří Halák
  Vladimír Smotlacha
  Sven Ubik (activity leader)
  Petr Žejdl

  Former team members:

  Pavel Bucek, Pavel Cimbál, Martin Čížek, Stanislav Hotmar, Antonín Král, Michal Kraus, Jan Klaban, Ladislav Ličko, Vladimír Macek, Robert Nedbal, Ivan Šimeček.

  Contact

  Sven Ubik

  Last updated  by Sven Ubik