Re: [PATCH 03/03] Unmapped: Add guarantee code

[Nick Piggin]

Magnus Damm wrote:
> Implement per-LRU guarantee through sysctl.
>
> This patch introduces the two new sysctl files "node_mapped_guar" and
> "node_unmapped_guar". Each file contains one percentage per node and tells
> the system how many percentage of all pages that should be kept in RAM as 
> unmapped or mapped pages.

The whole Linux VM philosophy until now has been to get away from stuff
like this.

If your app is really that specialised then maybe it can use mlock. If
not, maybe the VM is currently broken.

You do have a real-world workload that is significantly improved by this,
right?

--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/