[lkml]   [1997]   [Mar]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: Now, why didn't we think of this before?

    You have absolutely zero (0) foresight.

    > (try to get 1200 web operations per second on a Java VM based kernel
    > using current processors, not gonna happen)

    Personally I believe this is not because it cannot be done --- but rather
    because no one knows how to do it, and those who might aren't.

    On Mon, 24 Mar 1997, David S. Miller wrote:

    > Let's implement system calls via RPC while we are at it...
    > A few things:
    > 1) threaded kernel is being worked on, we should be scaling nicely
    > on SMP as a result some time in the near future
    > 2) re-entrant kernel, in the cases where it even makes sense to do
    > so we will get it for free via #1, if you want a pre-emptive kernel
    > that is another story all together
    > Memory may be cheap, however on chip cache is not. This is one of the
    > biggest arguments against persistant resizable storage, and why real
    > systems continue to be monolithic and written in C/Assembler.
    > People who want a Linux kernel in Java VM, go ahead be my guest and
    > implement such a thing. However I will never encourage anyone to use
    > it who happens to care about performance. I have enough trouble
    > getting every last cycle out of the kernel using C and Assembler.
    > Eventually perhaps systems will be fast enough that a Java VM written
    > kernel would have even passable performance. It will be quite a
    > statement of how we can waste CPU cycles, the VLSI guys are
    > essentially wasting their time at such a point because the software
    > people are in a state of delirium. If we have left it any time
    > recently, this would put us right back into the software crisis
    > again that everyone moans about.
    > ---------------------------------------------////
    > Yow! 11.26 MB/s remote host TCP bandwidth & ////
    > 199 usec remote TCP latency over 100Mb/s ////
    > ethernet. Beat that! ////
    > -----------------------------------------////__________ o
    > David S. Miller, /_____________/ / // /_/ ><

     \ /
      Last update: 2005-03-22 13:39    [W:0.019 / U:75.888 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site