Messages in this thread | | | Date | Sat, 5 Jan 2002 18:12:59 -0800 (PST) | From | Davide Libenzi <> | Subject | Re: [announce] [patch] ultra-scalable O(1) SMP and UP scheduler |
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On Sun, 6 Jan 2002, Alan Cox wrote:
> > Ingo, you don't need that many queues, 32 are more than sufficent. > > If you look at the distribution you'll see that it matters ( for > > interactive feel ) only the very first ( top ) queues, while lower ones > > can very easily tollerate a FIFO pickup w/out bad feelings. > > 64 queues costs a tiny amount more than 32 queues. If you can get it down > to eight or nine queues with no actual cost (espcially for non realtime queues) > then it represents a huge win since an 8bit ffz can be done by lookup table > and that is fast on all processors
It's here that i want to go, but i'd liketo do it gradually :)
unsigned char first_bit[255];
- Davide
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