Edwards Tech notes.

a work in progress

These are my notes on getting a Plantronics Voyager 855 bluetooth headset and Buffalo USB Bluetooth 2.1 dongle working under hardened amd64 Gentoo Linux with Skype.

Published on 13/03/2010 at 00h44 .

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God is a ruby based process monitor that has a reputation for leaking memory and hogging system resources. I have been considering replacing God with monit for some time. A couple of days ago I noticed a retweet by John Mettraux about a ruby debugging presentation by Aman Gupta. The presentation covers various debugging tools and gives a number of examples, including Eric Lindvall's work debugging the God process monitor (slide 41). Obviously I had to try it and the following is my experience.

Published on 06/12/2009 at 02h09 under Server.

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I spent the weekend switching the RAID1 array of 1TB Seagate® Barracuda® 7200.11 drives on my server with the newer 1TB Seagate® Barracuda® 7200.12 RAID1 array in my workstation. There was an LVM volume group called raid1 running on top of each raid array. I had some problems because I forgot to remove the raid superblock from the first drives before adding them into the new machine, which resulted in a duplicate raid1 volume group. The following is the process I used to transfer the drives and how I resulted the duplicate volume group problem.

Published on 24/11/2009 at 21h59 under Server.

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While on holidays in Australia I took a number of photo sequences to see if I could stitch them together into panoramic images. I used Hugins, which is a cross platform application, to stitch the photos together to produce images like the one bellow.

Published on 24/08/2009 at 23h01 under Meatspace, Photos.

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These are photos taken with a low shutter speed while driving at night. I like them because they capture the passing of time without any distracting details.

low speed photos taken while driving by Edward Middleton

Published on 06/08/2009 at 00h17 under Meatspace, Photos.

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Frédéric de Villamil committed my rails 2.3.3 patches to HEAD[1] last night. Frédéric had an interesting post[2] on there plans to re-factoring typo. The 2.3.3 patches have reduced the memory usage quite a lot. Once I have rebased this blogs varnish patches to the new HEAD I am going to look at getting typo running on ruby 1.9.1

1. http://rubyforge.org/pipermail/typo-list/2009-August/004922.html

2. http://blog.typosphere.org/news-from-a-summerish-typo.html

Published on 05/08/2009 at 23h44 under Server.

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Here are some photos I took when we visited the grandparents vegetable garden.

Published on 02/08/2009 at 23h10 under Meatspace, Photos.

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After looking at some of the cool features of rails 2.3.2 (like rack integeration) and its claimed compatibility with ruby 1.9.1 I decided to port typo blog 5.3.x from rails 2.2.2. This blog is running on the result of that effort.

Published on 01/08/2009 at 13h54 under Server.

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Here are some rather grainy B&W photos I took at the technical meeting and Nijikai.