>From my experience system calls are not an issue.
What costs a lot is moving data around, since modern CPUs spend most of their
time in memory/bus wait cycles...
- Fabio
Linus Torvalds wrote:
> >I think that applies to all really high-performance servers.
>
> Note that it is definitely not always true.
>
> Linux system calls are reasonably light-weight. And sometimes trying to
> avoid them ends up beaing _more_ work - because you might have to worry
> about synchronization and cache coherency in user mode.
>
> So the rule should be "avoid _unnecessary_ system calls".
>
> Linus
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon May 07 2001 - 21:00:14 EST