There is a wide-spread myth that swap space should be twice the size of RAM. This might have provided some benefit when 16M of RAM was a lot and disks had average access times of 20ms. Now disks can have average access times less than 10ms but RAM has increased to 1G for small machines […]
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September 28th, 2007 | Tags: Best Posts, Most Popular | Category: unix-tips | 39 comments - (Comments are closed) My mother just asked me to get Google Earth (link to download page [1]) working on her machine so she can see where my sister [2] lives. So I download all 20 megs of the sucker (of course it had a horrible license agreement that precludes packaging for Debian or any other sane distribution) and […] September 11th, 2007 | Tags: Most Popular | Category: Uncategorized | 13 comments - (Comments are closed) A common question is how to compare Fedora [1] and Debian [2] in terms of recent updates and support. I think that Fedora Rawhide and Debian/Unstable are fairly equivalent in this regard, new upstream releases get packaged quickly, and support is minimal. They are both aimed at developers only, but it seems that a reasonable […] September 9th, 2007 | Tags: Debian, Most Popular | Category: Linux | 5 comments - (Comments are closed) A fairly common request is to be able to duplicate a Xen instance. For example you might have a DomU for the purpose of running WordPress and want another DomU to run MediaWiki. The difference in configuration between two DomU’s for running web based services that are written in PHP and talking to a MySQL […] September 7th, 2007 | Tags: Best Posts, Most Popular | Category: Virtualisation | Comments are closed A significant problem with the old-fashioned media is that as a general rule they don’t cite references for anything. Some of the better TV documentaries and non-fiction books cite references, but this is the exception not the norm. Often documentaries only cite references in DVD extras which are good for the people who like the […] September 6th, 2007 | Tags: Best Posts, Most Popular | Category: Blogging | 7 comments - (Comments are closed) I have just been asked for advice on whether SE Linux is Linux specific, and therefore whether code related to SE Linux should always be stored with other Linux specific code instead of being in the main branch of certain free software projects. One example of SE Linux access controls being implemented on a different […] August 31st, 2007 | Tags: Best Posts, Most Popular, Selinux | Category: Security | 8 comments - (Comments are closed) One of the most important issues for a commodity fuel for vehicles is that it be convenient and safe to transport. For quite a while LP Gas has been available as a cheaper car fuel. Even with increasing petrol prices it’s acceptance is well below 100% due to extra expense in storing the fuel (high […] August 28th, 2007 | Tags: Best Posts, Environment, Most Popular | Category: Cars, Politics | 82 comments - (Comments are closed) It’s interesting to see that Audi is releasing a car with LEDs for all lights including the headlights. This is being promoted as an environmental benefit, however a quick google search revealed that my Volkswagen Passat apparently takes 55W headlights (giving a total of 110W of electricity used). Even allowing for some inefficiency in the […] August 23rd, 2007 | Tags: Best Posts, Environment, Most Popular | Category: Cars | 7 comments - (Comments are closed) After getting Ethernet Bonding working (see my previous post) I tried to get it going with a bridge for Xen. I used the following in /etc/network/interfaces to configure the bond0 device and to make the Xen bridge device xenbr0 use the bond device: iface bond0 inet manual pre-up modprobe bond0 pre-up ifconfig bond0 up hwaddress […] August 14th, 2007 | Tags: Best Posts, Debian, Most Popular | Category: Networking, Virtualisation | 8 comments - (Comments are closed) I have previously blogged about Ethernet bonding on Red Hat Enterprise Linux. Now I have a need to do the same thing on Debian Etch – to have multiple Ethernet links for redundancy so that if one breaks the system keeps working. The first thing to do on Debian is to install the package ifenslave-2.6 […] August 13th, 2007 | Tags: Best Posts, Most Popular | Category: Linux, Networking | 15 comments - (Comments are closed) |
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