No good deed goes unpunished: A customer brought the laptop to Leapfrog Computers in Bolton on Monday to have it repaired, sales manager Jonathan Parry said. “A technician had a look at it, opened it up to have a look at the components inside, and when you actually open up the laptop and take off [...]
Categories: security
Process snipers are used to kill errant processes I’ve used process snipers and watchdog’s to handle realistic process management in large clusters in the past but never felt any of them were very elegant in terms of code simplicity. It dawned on me the other day that this would work out perfectly: for proc in [...]
Categories: clustering,linux
Google has officially jumped the rel=nofollow shark. Google Sites is live and every page on the site uses rel=nofollow. I just created a sample site and linked to my blog only to be presented with the following HTML: <a href=”http://www.google.com/url?q=http%3A%2F%2Ffeedblog.org&sa=D&sntz=1&usg=AFrqEzc8SrF9mKSuhvVdhS_YMmZ-b6rbdw” rel=”nofollow”>http://feedblog.org</a> Is this the future of the web? Every URL is going to have rel=nofollow? [...]
For the last few years I’ve been playing with a simple configuration system which I call ‘runtime properties’. Runtime properties are similar to Java system properties in concept but differ in a few ways. They’re designed to replace variables during VM initialization with values in a given property file. When you reference a named Java [...]
Categories: java
You’ve got to be kidding me. This is running on CNN right now: The US is occupying two countries, we’re in the middle of a Presidential election – you think maybe they should focus on something more important? CNN is pathetic.
Categories: politics
This is exceedingly cool: What would you do if you are modern Muslim women, and you want to flaunt your beauty, but your restricted by the blessed burqa and your religion? You just put on Markus Kison’s CharmingBurka, a Bluetooth enabled garment that sends an image, chosen by the wearer, to those around her. The [...]
Categories: politics
I need to give it a bit more thought but it looks like we’re going forward with deploying Spinn3r on SSD. Specifically, machines with 3 SSDs on Linux software RAID. The performance of SSDs is nothing short of astounding. When tuned correctly these drives were nearly 10x the performance of the same box running RAID. [...]
Categories: clustering,linux,mysql,SSD
The other day I blogged about running RAID performance tests and being disappointed by random write speeds. The clear loser here is rndwr (random writes). I’m pretty sure this has to with the 64k stripe/chunk size. I’m willing to be the RAID controller is deciding to write the entire chunk for small updates which would [...]
I finally figured out how to run with a custom page size on InnoDB. It looks like there’s a bug with innodb_file_per_table and 8k pages in MySQL 4.1 through 5.1. On a whim I just decided to try a very basic configuration and it worked. Now comes the real fun. It turns out that on [...]
Categories: Uncategorized
More benchmarks. InnoDB gets SERVED by MyISAM on ext3 running fully random SELECTs. If I could JUST set the page size to 4k this problem would be solved. (The Y axis is seconds)
Categories: mysql