On 09/06/2013 12:11 AM, Pavel Machek wrote: > hi! > >>>> This patch adds the new overcommit_ratio_ppm sysctl variable that >>>> allow to set overcommit ratio with a part per million precision. >>>> The old overcommit_ratio variable can still be used to set and read >>>> the ratio with a 1% precision. That way, overcommit_ratio interface >>>> isn't broken in any way that I can imagine. >>> >>> Looks like a pretty sane solution. Could you also make a Documentation/ >>> update, please? >> >> Damn! I forgot. Will do. > > Actually... would something like overcommit_bytes be better interface? overcommit_pages? > > If system would normally allow allocating "n" pages, with overcommit > it would allow allocating "n + overcommit_pages" pages. That seems > like right granularity... > I don't know what do you mean by "normally". Anyway, I've considered that option: my concern about mixing absolute and proportional values is that they would diverge if the amount of ram varies (e.g. memory hotplug or virt baloon driver). -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>