that is a feature, it guarantees highmem unfreeable allocations like
pagetables can't eat all your normal zone. You can reduce the 200MB with
this boot command:
lower_zone_reserve=256,256
As to decrease the swapping I just told you how to do that tweaking
vm_mapped_ratio.
>
> Another notable difference between the two vm versions is that the
> rmap vm maintains about 80% of memory on the active list and the
> aa vm much less: between 4% and 12%. The rmap vm must use more
> CPU, but these servers have a lot of processing power so it is not
> noticeable.
the theory was that rmap would reduce the cpu utilization but of course
the patch don't do juts rmap.
Andrea
-
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/