Re: How good with linux 2.1 SMP be AFTER everyone switches to spinlocks?
Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 15 Jan 1998 20:36:26 +0000 (GMT)
> something about how much overhead we incur. I guess the kernel support
> has improved cuz its not all under one big lock anymore (2.1)... is
> there really a big difference between 2.0 & 2.1? How much should
> overhead decrease when people start using spinlocks? And how much will
> the 'coolness factor' increase? Maybe by roughly a factor of 1.5?
CPU bound Linux SMP not a lot - its already very efficient, its make a
huge difference on interrupt or I/O bound servers.
There's still stuff to do - like doubling the network performance when I
switch some of that to spinlocks ;)