On Mon, Aug 18, 2014 at 10:15:32AM +0900, Gioh Kim wrote: > > My test platform has totally 1GB memory, 256MB for CMA and 768MB for normal. > I applied Joonsoo's patch: https://lkml.org/lkml/2014/5/28/64, so that > 3/4 of allocation take place in normal area and 1/4 allocation take place in CMA area. > > And my platform has 4 ext4 partitions. Each ext4 partition has 2 page caches for superblock that > are what this patch tries to move to out of CMA area. > Therefore there are 8 page caches (8 pages size) that can prevent page migration. Yes, but are you actually *using* the ext4 partitions for anything? If this is a realistic real world use case, file systems are used to store, well, files, and that means there will be inodes and dentry cache entries that will also be allocated. Does your test scenario reflect real world usage? Cheers, - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
