Messages in this thread | | | From | Al Boldi <> | Subject | Re: [Announce] [patch] Modular Scheduler Core and Completely Fair | Date | Mon, 16 Apr 2007 17:38:47 +0300 |
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Peter Williams wrote: > Al Boldi wrote: > > Reducing the prio-level granularity may also be helpful; > > Because of some of the bit operations code makes it a bad idea to have > more than 160 priority levels, you're more or less limited to 60 > priority levels for SCHED_OTHER tasks (as 100 are used for real time) > and you need 40 of these to pay some attention to niceness leaving you > about 20 priority levels to use for fiddling. Is that enough? > > With spa_ebs (now that CPU rate caps have been removed), you have all 60 > priorities available for fiddling with as niceness is taken care of when > calculating each task's entitlement.
Ok, increasing the number of prio-levels is one thing, but I was more thinking of reducing the effective difference between each prio-level. For example, this would allow max_tpt_bonus=18, while the effective range would be 3, thus reducing granularity. Would this be easily introduceable?
Thanks!
-- Al
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