Re: page order 0 allocation fail but free pages are enough
From: Michal Hocko <mhocko@kernel.org>
Date: 2016-05-24 11:50:52
OK, I could have noticed that earlier... On Tue 24-05-16 19:40:21, yoma sophian wrote: [...]
Normal free:56088kB min:2000kB low:2500kB high:3000kB active_anon:148332kB inactive_anon:6040kB active_file:1356kB inactive_file:5240kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:329728kB managed:250408kB mlocked:0kB dirty:120kB writeback:0kB mapped:8108kB shmem:6136kB slab_reclaimable:5520kB slab_unreclaimable:26128kB kernel_stack:2720kB pagetables:4424kB unstable:0kB bounce:0kB free_cma:55452kB
free-free_cma = 636kB so you are way below the watermark and that is why your atomic allocation fails (see __zone_watermark_ok). I am not an expect on CMA but I guess your CMA pool is too large for your load. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>