Messages in this thread | | | Date | Sat, 12 Jul 2003 08:59:18 -0700 (PDT) | From | Davide Libenzi <> | Subject | Re: [patch] SCHED_SOFTRR linux scheduler policy ... |
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On Sat, 12 Jul 2003, Jamie Lokier wrote:
> Davide Libenzi wrote: > > With the current patch you do not need any special support if you are > > already asking for SCHED_RR policy. If you are not root you will be > > automatically downgraded to SCHED_SOFTRR ;) > > Cool. What happens if you run two SCHED_SOFTRR tasks and they both > use 50% of the CPU - will that starve all the other tasks? Or is the > CPU usage of all SOFTRR tasks bounded collectively?
Nope :) They will run their timeslice entirely and then they will try to get some more. Looking at their last recharge timestamp, Dad scheduler will put them in bed and will give other tasks a chance to run. But don't worry, I am very sure there're other exploit available. I just didn't have enough time to think about it. It is amazing how limited are things that you can do in one hour :)
- Davide
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