Hi Raja Pawn,
I am trying to test the low memory killer driver. I am not able to simulate
it.
On Thursday, November 18, 2010 11:09:03 AM UTC+5:30, Raja Pavan wrote:
>
> We are testing the lowmemorykiller.c driver of android, using a sample
> test application that malloc() and memset() memory. [code pasted
> below]
>
> void loopmalloc()
> {
> int size,i=0;
> float **ptr = NULL;
>
> printf("\n\nLoopMalloc starts....\n\n");
> ptr = (float **)malloc(2000000*sizeof(float *));
> while(i++ < 2000000)
> {
> printf("LoopMalloc Starts i=%d\n",i);
> size = 1024*1024*1024*sizeof(float);
> ptr[i] = (float *)malloc(size);
> memset(ptr[i],0,size);
> }
> }
>
> I am also using the same method to allocate the memory
.
> We configured lowmemorykiller.c to be triggrred for 6 different levels
> of freememory
>
> init.rc
> write /sys/module/lowmemorykiller/parameters/minfree
> 1536,2048,4096,5120,5632,6144
>
> Low Memory Killer was not tiggerred for any level of the freememory
> mentioned above.
>
> Then we increased the Free Memory Levels, so the sample application is
> expected to be triggered at the very beginning as we have configured
> the LMK to be triggered even for a very high free memory.
>
> write /sys/module/lowmemorykiller/parameters/minfree
> 1054720,1054720,1054720,1054720,1054720,1054720
>
Do we need to set these values when we are booting the device or we can
change the values using adb.
Because as I am modifying these values by echoing, still the lowmem_shrink
is not getting invoked.
>
> Now the low memory killer is getting called and also the sample test
> application is killed by the lowmemorykiller.
>
> But only after the sample application is almost at the end of the
> memory allocation.
>
> Is there any patch to lowmemorykiller.c or the kswapd (mm/vmscan.c)
> that will make the lowmemorykiller to get triggerred for all levels of
> the free memory levels specified inside the init.rc.
>
>
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