On Friday 28 October 2005 00:18, Claudio Scordino wrote: > Hi, > > during the last years there has been a lot of discussion about the > "best" value of HZ... On i386 was 100, then became 1000, and finally was > set to 250. I'm thinking to do an evaluation of this parameter using > different architectures. > > Has anybody thought to give the possibility to modify the value of HZ at > boot time instead of at compile time ? This would allow to easily test > different values on different machines and create a table containing the > "best" value for each architecture... At this moment, instead, we have to > recompile the kernel for each different value :( > > Do you think there would be much work to do that ? > Do you think it would be a desired feature the knowledge of the best value > for each architecture with more precision ? Google for "dynticks". There's obviously an overhead associated with HZ not being a constant (the compiler cannot optimise many expressions), but the feature is being worked on nonetheless. -- Cheers, Alistair. 'No sense being pessimistic, it probably wouldn't work anyway.' Third year Computer Science undergraduate. 1F2 55 South Clerk Street, Edinburgh, UK. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
