Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: Linux Kernel constraints! | Date | 21 Jan 1999 23:09:14 GMT |
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Followup to: <F1C298E6C941D111A18500805F89245932C188@MIDCBDC> By author: Yogesh Bansal <yogesh.bansal@tatainfotech.com> In newsgroup: linux.dev.kernel > > Recently(dec.) in WindowsNT magazine comparisons/similarities between > various flavours of unix and nt had come. In the same article Linux was > ignored as enterprise os on account of following kernel 'limitations' : > > 1. kernel is not preemptive. ie even a higher priority user thread cant > cause another thread to be swapped if the other thread is presently running > in privileged/kernel context. > 2. kernel is not reentrant. ie.only one thread in kernel context at a time. > 3. kernel is not multi processing in the sense that on multiprocessor > systems it will run on only one cpu at a time. > > will somebody can clarify these doubts and version which enabled it to be > otherwise. > yogi >
2 and 3 are just plain incorrect, although the granularity could be improved. 1 is true, but is not a major problem in practice, except for hard real time. As an "enterprise OS" hard real time is hardly a requirement.
Sounds like standard WindowsNT mag. FUD to me (this mag seems to be a major source of FUD these days.)
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