change OS quantum

jeffwang6668 · 05-30-2013, 04:20 PM

Hello,

I just would like to ask how I can change OS quantum (time slice) in Linux? For example, smaller value makes context switch be more frequent.

Thanks,

Jeff

2ck · 05-30-2013, 07:19 PM

There's the nice level, the default time quantum, which you can set with `nice' (or `renice' if the command is already running).

Of course, there's more to the story --> http://oreilly.com/catalog/linuxkern...pter/ch10.html see "Scheduling Algorithm"

TobiSGD · 05-30-2013, 07:38 PM

To change the frequency of context switches you have to recompile the kernel with the changed value. You can find the value under Processor type and features -> Timer frequency when configuring the kernel with

Code:

make menuconfig