1 / 10

OWAMP (One-Way Latencies) BWCTL (Bandwidth Test Control)

OWAMP (One-Way Latencies) BWCTL (Bandwidth Test Control). Jeff Boote ( boote@internet2.edu ) Network Performance Tools BOF-SC07. BWCTL: What is it? / What is it good for?. A resource allocation and scheduling daemon for arbitration of iperf tests

halia
Télécharger la présentation

OWAMP (One-Way Latencies) BWCTL (Bandwidth Test Control)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. OWAMP (One-Way Latencies)BWCTL (Bandwidth Test Control) Jeff Boote (boote@internet2.edu) Network Performance Tools BOF-SC07

  2. BWCTL:What is it? / What is it good for? A resource allocation and scheduling daemon for arbitration of iperf tests Users want to verify available bandwidth from their site to another. Methodology • Verify available bandwidth from each endpoint to points in the middle to determine problem area.

  3. Typical Performance Debugging Process • Run “iperf” or similar tool on two endpoints and hosts on intermediate paths • Typical road blocks • Need software on all test systems • Need permissions on all systems involved (usually full shell accounts*) • Need to coordinate testing with others * • Need to run software on both sides with specified test parameters * (* BWCTL was designed to help with these)

  4. Future (soon) Plans • Additional ‘testers’ integrated more closely: • Thrulay(api)/nuttcp/pathload • Iperf (api) • (Am I missing anything I should really be considering?) • Direct NMWG-Schema output • Bug fixes relating to time offset issues • Minor feature additions (parallel streams…) • RPM packages

  5. Availability • Currently available http://e2epi.internet2.edu/bwctl/ Mail lists: • bwctl-users@internet2.edu • bwctl-announce@internet2.edu https://mail.internet2.edu/wws/lists/engineering

  6. OWAMP:What is it? / What is it god for? OWD or One-Way PING • Find problems in the network • Congestion usually happens in one direction first… • Routing (asymmetric, or just changes) • SNMP polling intervals mask high queue levels that active probes can show • There have been many implementations to do One-Way delay over the years (Surveyor, Ripe…) • The problem has been interoperability. • RFC 4656

  7. Future (soon) Plans • User-space high precision clock (TSC register tricks) • RPM packages

  8. Availability • Currently available http://e2epi.internet2.edu/owamp/ Mail lists: • owamp-users@internet2.edu • owamp-announce@internet2.edu https://mail.internet2.edu/wws/lists/engineering

  9. Future Direction • perfSONAR integration • Tool for creating owamp/bwctl measurement groups and collecting that data in a perfSONAR enabled archive • perfSONAR integration of diagnostic on-demand control of tests. (Helpful for GUI integration)

  10. www.internet2.edu

More Related