About the Author

me

I am a 24 year old Software Engineer working at Lime Brokerage in Waltham, MA. I live in Belmont, MA with my wife Abby Noyce and two cats. You can find out more about me here: Dan Noé.

 
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29 September 2008 - 23:59Twitter Updates for 2008-09-29

  • Watching the original BBC Hitchhiker’s Guide series. Still amusing after all these years, and IMHO better than the movie. #

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26 September 2008 - 23:59Twitter Updates for 2008-09-26

  • Looks like my WaMu card will be turning into a Chase card… #

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23 September 2008 - 15:32links for 2008-09-23

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21 September 2008 - 23:59Twitter Updates for 2008-09-21

  • Got another Sun (a slightly better one) for near free at the MIT flea, plus a standby VHF HT and a replacement multimeter. #

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21 September 2008 - 23:30links for 2008-09-21

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20 September 2008 - 23:59Twitter Updates for 2008-09-20

  • Damn, it is COLD outside! #

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20 September 2008 - 10:33links for 2008-09-20

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19 September 2008 - 23:59Twitter Updates for 2008-09-19

  • BelmontNet is up and running with NFSv4 (though not over IPv6 yet). #

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19 September 2008 - 2:03links for 2008-09-18

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18 September 2008 - 23:59Twitter Updates for 2008-09-18

  • A new record volume day at work (previous record set in January). #

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16 September 2008 - 23:59Twitter Updates for 2008-09-16

  • Fed leaves rates unchanged. The market goes wild! #

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15 September 2008 - 23:30links for 2008-09-15

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13 September 2008 - 23:59Twitter Updates for 2008-09-13

  • radio support for Reach the Beach relay. #

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12 September 2008 - 6:32links for 2008-09-12

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11 September 2008 - 23:59Twitter Updates for 2008-09-11

  • We have a new modest 720p HDTV and mackerel is hooked up again. It looks so much nicer than analog… #

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10 September 2008 - 23:59Twitter Updates for 2008-09-10

  • LHC turned on. World still here. Congratulations CERN for finishing the project. #

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9 September 2008 - 23:07Load under FiOS

Our home network is a bit complicated, since I’m a dork and I like networks. We have Verizon FiOS, Verizons Fiber To The Home network. We get 20Mbit down, 5Mbit up which is a lot by United States standards (if an embarrassment compared to some countries).

home network diagram

I’ve converted the supplied Verizon Actiontec NAT router into a bridge so that I can use anchovy, an old Dual Celeron 400MHz system. Anchovy is running Debian Etch. I have anchovy configured with DNS, NAT routing, QoS, firewalling, DHCP, and an IPv6 tunnel via SixXS.

Earlier today I grabbed some Ubuntu ISO images, and some other Linux rescue ISO images. This meant 7 TCP streams going at full tilt simultaneously, downloading to saturate the 20Mbit line rate. I checked the load on anchovy while this was happening:

dstat illustrating load

Note the large amount of time spent in SoftIRQ, indicating heavy networking processing (in the kernel). The interrupt count remained relatively constant. Perhaps NAPI and/or interrupt mitigation was active?

traffic graph

Here is a picture of our “core switches” :)

switches

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4 September 2008 - 23:27Abramoff Sentenced to 4 Years

Crooked lobbyist Jack Abramoff has been sentenced to 4 years in prison, 9 months longer than federal prosecutors had sought. Abramoff was at the center of extensive corruption in congress, with many nebulous ties to the Bush administration (and Karl Rove). The end result of the Abramoff investigation was the conviction of 10 officials, including a Republican member of congress.

Good to see the Judge recognized the gravity of Abramoff’s crimes. I’m still waiting for the conclusion of the U.S. Attorney firing investigation…

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3 September 2008 - 13:30links for 2008-09-03

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