Modular IO Schedulers

"Adrian Bunk posted a patch to make Linux IO schedulers a non-modular option, which would require one IO scheduler to be selected at compile time. He suggested, 'there isn't any big advantage and doesn't seem to be much usage of modular schedulers.' He added that removing the option to make IO schedulers modular would save 2kB on each kernel image. Jens Axboe did not like the patch, 'big nack, I use it all the time for testing. Just because you don't happen to use it is not a reason to remove it.' When Adrian noted that no distros seemed to be making IO schedulers available as modules, Jens suggested that this was a mistake and quipped, 'it's been a long time since I considered a distro .config a benchmark/guideline of any sort...'"

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• KernelTrap: Time Sliced CFQ With IO Priorities(Dec 15, 2004)