Denis Vlasenko wrote:
>
> On 18 March 2002 20:07, Russ Weight wrote:
> > While systems with more than 32 processors are still
> > out in the future, these interfaces provide a path for gradual
> > code migration. One of the primary goals is to provide current
> > functionality without affecting performance.
>
> Not so far in the future. "7.52 second kernel compile" thread is about
> timing kernel compile on the 32 CPU SMP box.
The x86 spinlock implementation underflows at 128 CPUs [1].
> I don't know whether BUG() in inlines makes them too big,
It does, on all but very recent gcc's. Strings in inlines
generally cause vast kernel bloatage.
> but _for() _loops_ in inline functions definitely do that.
> Here's one of the overgrown inlines:
Sigh. There is far too much inlining in Linux.
[1] Untested.
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This archive was generated by hypermail 2b29 : Sat Mar 23 2002 - 22:00:17 EST