FTS Knowledge Center

The FTS Knowledge Center is back online. Here you'll find articles that will help increase your understanding of computing, networking, and software development. Maybe you'll find one or two that help solve a problem you have.

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Have you ever wanted to see exactly how your Java source code is compiled in bytecode? Or were you ever stuck trying to debug a problem in a third-party library for which you do not have the source?

In these situations, your friend is the javap command. Just switch to the directory containing the .class file you want to peek into. Then run the following:

javap -c MyClassName

I ran into a very annoying problem today when trying to sync my iPhone. I connected my iPhone to my Vista (bleh) PC. Note that I do not have auto-synchronization enabled in iTunes.

For some reason, the phone displayed the message "Sync in Progress" although I did not start a sync in iTunes. It lasted for 1 second, after which it disappeared. iTunes didn't show anything about syncing. In fact, it didn't show the iPhone in the Devices list at all.

Calculating the hit rate for your MySQL InnoDB buffer cache is fairly simple. Just run the following command:


SHOW STATUS;


Then take Innodb_buffer_pool_read_requests and divide it by Innodb_data_read. That is your read hit ratio (multiply by 100 to get a percentage).

HostGator supports PHP overrides when using their shared hosting packages. Unfortunately, it is not very obvious how to do this.

The simplest way is to use PHP's built-in ini_set() function from your script. However, you may have a need to have the same settings for all your scripts, or you do not want to pollute your scripts with ini_set calls. This especially applies for things like the include_path directive for include paths.