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Paul's Time Sink

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disable pop3 from cyrus

Paul Westbrook | 26 January, 2006 02:36

I don't use pop3, pop3s, or imap to access my mail server, but only use secure imap.  The other ports have been blocked by iptables, but cyrus-imapd runs all the daemons by default.

If you want to disable some of these services, you can comment out the services you don't want in /etc/cyrus.conf.

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eAccelerator

Paul Westbrook | 26 January, 2006 02:29

The page that has the optimizations for mysql also has a link to a walkthrough for setting up eAccelerator.  eAccelerator is a php extension that caches compiled php scripts, so that the web server doesn't have to compile the scripts for every access.

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mysql optimization for VPS

Paul Westbrook | 26 January, 2006 02:23

Recently, I have noticed that the performance of my web sites have been pretty poor.  It appeared that any pages that connected to my mysql database, were the major problem.  When I looked at the output from top, I saw that the CPU usage for the VPS was reaching 100% when these performance problems were happening. 

The main problem is the processes running in my VPS did not add up to using even anywhere close to that much CPU.  It appears that some other VPS or the host itself was using a high processor time, and the process priority was not set correctly.

While I was trying to work around the problem, I found this page that describes a configuration for mysql that works well in a limited resource VPS.  These settings seem to work for me.

Update:  It looks like the problem was some other VPS, or the host.  The host was rebooted, and the problem hasn't happened since

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iPod thoughts

Paul Westbrook | 26 January, 2006 02:12

I have been using my iPod for a while and I really like it.  It is a very cool, but pretty pointless device.  I have copied all of the music from my laptop onto it, have purchased some TV Shows from the iTunes Music Store, and have converted some videos with iSquint.

During this time I have thought of some things that I would like:

  1. Larger selelection of TV shows on the iTunes Music Store.  This post describes an error in the guide data that caused my Stargate Atlantis Season Pass to not record the latest programs.  I wish I could have just purchased these episodes.
  2. Extended battery pack.  You can only watch about 2 hours of video on the 30 Gb iPod.
  3. An Alpine iPod adapter that would support video output.  The iPod is a more compact  and resilient way to store videos for viewing in the car than DVDs
  4. An Apple iPod Universal Dock, to make it easy to connect the iPod to my laptop at work.

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