Re: a joint letter on low latency and Linux

From: Jussi Laako (jussi@jlaako.pp.fi)
Date: Sun Jul 02 2000 - 03:53:25 EST


> Actually, that's not true. Allocate a buffer that is > main memory size
> and then sit in a loop an touch it over and over. You'll see longer than
> 10 sec delays.

Yes, that's true. But this also reminds me about "feature" that I hope gets
fixed in 2.4.

If there is a wild app that keeps allocating and committing memory at high
speed the system becomes unusable when it starts swapping. Only way out of
this loop is to hit reset-button, because system doesn't respond to any
keyboard events. I have that kind of bugs in my programs sometimes, last
time I implemented that in GNU Octave...

I think this as DOS attack and serious "bug", because ordinary user is able
to put machine in unusable state!

 - Jussi Laako

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