Hi Greg, On Thu, Jan 15, 2009 at 5:42 AM, Greg KH <greg@xxxxxxxxx> wrote: > On Wed, Jan 14, 2009 at 03:32:38PM -0800, Arve Hjønnevåg wrote: >> On Wed, Jan 14, 2009 at 3:17 PM, Greg KH <greg@xxxxxxxxx> wrote: >> >> We actually use 6 different thresholds for killing processes. I don't >> >> know what all the classes are, processes with a higher oom_adj value >> >> can be killed with less impact to the user than processes with a lower >> >> oom_adj value. The first few classes only affect latency when >> >> switching apps, but later classes stop non critical background >> >> services and finally the foreground app. Another reason to not kill >> >> every process at the same threshold is that memory may not be free >> >> immediately when the process is killed. >> > >> > But the lowmemorykiller android module doesn't have anything to do with >> > this, right? >> > >> >> It does. We write the thresholds to >> /sys/module/lowmemorykiller/parameters/adj and >> /sys/module/lowmemorykiller/parameters/minfree then set the oom_adj >> value per process. If the standard oom killer can be adjusted in a >> similar way, then we will not need the lowmemorykiller module. > > Great, care to document this somewhere so people like me don't get > confused? And there is one more lowmem driver developed by Nokia for Nokia 8xx tablets it seems. CCed Tony Lindgren, Juha and Viktor. http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git;a=blob;f=security/lowmem.c;h=ae78a530af39703e335ad769f1e6f097f63ec6dd;hb=HEAD -- ---Trilok Soni http://triloksoni.wordpress.com http://www.linkedin.com/in/triloksoni -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
