Messages in this thread | | | Subject | Re: [2.4.17/18pre] VM and swap - it's really unusable | Date | Sun, 13 Jan 2002 15:45:06 +0000 (GMT) | From | Alan Cox <> |
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> What somehow got lost in this discussion, that both patches don't > necessarily conflict with each other, they both attack the same problem > with different approaches, which complement each other. I prefer to get > the best of both patches.
When you look at the benchmark there is no difference between ll and ll+pre-empt. ll alone takes you to the 1ms point. pre-empt takes you no further and to get much out of pre-emption requires you go and do all the hideously slow and complex priority inversion stuff.
> exactly that reason. I don't think we need to work around broken > hardware, but halfway decent hardware should not be a problem to get > decent latency.
We have to work around common hardware not designed for SMP - the 8390 isnt a broken chip in that sense, its just from a different era, and there are a lot of them.
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