Messages in this thread | | | Date | Wed, 05 Jun 2002 13:15:26 +0200 | From | Peter Wächtler <> | Subject | Re: [ANNOUNCE] Adeos nanokernel for Linux kernel |
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Daniel Phillips wrote: > On Wednesday 05 June 2002 05:56, J Sloan wrote: > >>Daniel Phillips wrote: >> >> >>>If I recall correctly, XFS makes an attempt to provide such realtime >>>guarantees, or at least the Solaris version does. >>> >>> >>When did Solaris ever support xfs? >> >> >>>However, the operating >>>system must be able to provide true realtime guarantees in order for the >>>filesystem to provide them, and I doubt that the combination of XFS and >>>Solaris can do that. >>> >>> >>no, but the combination of xfs and irix has >> > ^^^^ > Heh, I can only protest that Oxymoron also missed that thinko.. > > >>made a lot of folks happy - and xfs/linux is coming along nicely as >>well... >> > > Improving the average latency of systems is a worthy goal, and there's > no denying that 'sorta realtime' has its place, however it's no substitute > for the real thing. A soft realtime system screws up only on occasion, > but - bugs excepted - a hard realtime system *never* does. >
Yes, in theory. You define hard realtime system in a clean room. Even QNX4 couldn't provide hard realtime when creating new processes. You had to start them beforehand - so you needed good system design. The OS is just a small part of that.
Even vxworks had problems with priority inversion ... and so on.
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