Talks: Difference between revisions
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We are currently looking at [[QoS|QoS tagging]] to reduce the load on campus switches/routers. |
We are currently looking at [[QoS|QoS tagging]] to reduce the load on campus switches/routers. |
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= QoS = |
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We are currently looking at implementing QoS on the host end. IST's QoS plan is documented here: http://ist.uwaterloo.ca/~dkeenan/docs/QoS-plan-draft.html. IST recommends using "IP Precendence 1, PHB CS1, DSCP 8, CoS 1". The ports we want to limit are 80 (HTTP) and 6900-6999 (BitTorrent). |
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DSCP Information: |
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* http://tools.ietf.org/html/rfc2474 |
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* http://www.cisco.com/warp/public/105/dscpvalues.html |
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CoS/802.1p Information: |
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* http://www.ieee802.org/1/pages/802.1D-2003.html |
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Faculty Computing Implementations: |
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* Science: http://www.freebsd.uwaterloo.ca/twiki/bin/view/Test/QoSProject |
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Our switch (HP ProCurve 2810) supports DSCP -> 802.1p mappings. Other ProCurve switches likely support this as well (need to check with dlgawley though). |
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The /etc/network/if-up.d/csc-mirror script (puppetized) adds the iptables rules we need. |
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Revision as of 17:07, 21 August 2007
Requested
- Michael Geist (Canadian Law and Technologist Blogger)
- Keith Packard (X Windows)
- Walter Bright (D Programming Language)
Encoding
We use dvgrab to rip the talks from the camera and ffmpeg to encode.
Mirrors
- taurine (90 Mbps) [It can probably push much more if it were on a gigabit link]
- citric-acid (250 Mbps)
- natural-flavours (200 Mbps)
- artificial-flavours (200 Mbps)
- perpugilliam (90 Mbps)
The list of mirrors can be found in /users/www/mirrors.txt; the web server selects a random mirror from this list at each file request. We now run snmpd so we have real-time access to network and cpu load data. We should therefore be able to write a more intelligent mirror selection script. We also use mirror.cs to mirror on-campus.
We are currently looking at QoS tagging to reduce the load on campus switches/routers.