Messages in this thread | | | Date | Fri, 13 Sep 2002 18:09:55 -0300 (BRT) | From | Rik van Riel <> | Subject | Re: Good way to free as much memory as possible under 2.5.34? |
| |
On Fri, 13 Sep 2002, Pavel Machek wrote:
> /* > * Try to free as much memory as possible, but do not OOM-kill anyone > * > * Notice: all userland should be stopped at this point, or livelock > is possible. > */ > > This worked before -rmap came in, but it does not free anything > now. What needs to be done to fix it?
Actually, it still worked when -rmap came in, but it stopped working when the LRU lists were made to be per-zone...
> static void free_some_memory(void) > { > printk("Freeing memory: "); > while > (try_to_free_pages(&contig_page_data.node_zones[ZONE_HIGHMEM], GFP_KSWAPD, 0)) > printk("."); > printk("|\n"); > }
Why don't you just allocate memory ?
To prevent the OOM kill you can just check for a variable in the OOM slow path. No need to rely on any particular behaviour of the VM.
regards,
Rik -- Bravely reimplemented by the knights who say "NIH".
http://www.surriel.com/ http://distro.conectiva.com/
Spamtraps of the month: september@surriel.com trac@trac.org
- 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/
| |