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To: Michal Hocko Cc: linux-mm@kvack.org, Andrew Morton References: <201902150227.x1F2RBhh041762@www262.sakura.ne.jp> <20190215130147.GZ4525@dhcp22.suse.cz> From: Tetsuo Handa Message-ID: <1189d67e-3672-5364-af89-501cad94a6ac@i-love.sakura.ne.jp> Date: Fri, 15 Feb 2019 23:27:25 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: <20190215130147.GZ4525@dhcp22.suse.cz> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2019/02/15 22:01, Michal Hocko wrote: > On Fri 15-02-19 11:27:10, Tetsuo Handa wrote: >> I noticed that amount of free memory reported by DMA: / DMA32: / Normal: fields are >> increasing over time. Since 5.0-rc6 is working correctly, some change in linux-next >> is causing this problem. > > Just a shot into the dark. Could you try to disable the page allocator > randomization (page_alloc.shuffle kernel command line parameter)? Not > that I see any bug there but it is a recent change in the page allocator > I am aware of and it might have some anticipated side effects. > I tried CONFIG_SHUFFLE_PAGE_ALLOCATOR=n but problem still exists. [ 45.788185][ C3] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15872kB [ 45.793869][ C3] Node 0 DMA32: 2017*4kB (M) 1007*8kB () 511*16kB (UM) 257*32kB (UM) 129*64kB (UM) 62*128kB () 33*256kB (UM) 15*512kB (U) 9*1024kB (UM) 186*2048kB (M) 481*4096kB (M) = 2425164kB [ 45.800355][ C3] Node 0 Normal: 71712*4kB () 32360*8kB () 16640*16kB (UME) 10536*32kB (UE) 5199*64kB (UME) 2551*128kB (M) 1232*256kB (UM) 604*512kB () 300*1024kB (UM) 233*2048kB (E) 4*4096kB (M) = 3233792kB [ 212.578797][ T9783] Node 0 DMA: 298*4kB (UM) 151*8kB (UM) 76*16kB (U) 41*32kB (UM) 21*64kB (UM) 11*128kB (U) 8*256kB (UM) 5*512kB (M) 3*1024kB (U) 0*2048kB 3*4096kB (M) = 27648kB [ 212.585534][ T9783] Node 0 DMA32: 18100*4kB () 8704*8kB (UM) 3984*16kB (M) 1704*32kB (M) 673*64kB (M) 261*128kB (M) 139*256kB (M) 48*512kB (UM) 23*1024kB (UM) 1308*2048kB (M) 10*4096kB (UM) = 3140240kB [ 212.593410][ T9783] Node 0 Normal: 285472*4kB (H) 105638*8kB (UEH) 43419*16kB (UEH) 19474*32kB (UEH) 7986*64kB (H) 3628*128kB () 1661*256kB () 753*512kB () 349*1024kB () 316*2048kB () 0*4096kB = 6095648kB [ 230.654713][ T9550] Node 0 DMA: 298*4kB (UM) 151*8kB (UM) 76*16kB (U) 41*32kB (UM) 21*64kB (UM) 11*128kB (U) 8*256kB (UM) 5*512kB (M) 3*1024kB (U) 0*2048kB 3*4096kB (M) = 27648kB [ 230.661248][ T9550] Node 0 DMA32: 29452*4kB () 14391*8kB () 6814*16kB () 3109*32kB (M) 1365*64kB (M) 491*128kB (M) 263*256kB (M) 150*512kB (M) 125*1024kB (M) 1309*2048kB (UM) 10*4096kB (UM) = 3585576kB [ 230.669879][ T9550] Node 0 Normal: 367054*4kB (UMEH) 123969*8kB (UMEH) 48498*16kB (UMEH) 20325*32kB (UMEH) 8069*64kB (UMH) 3640*128kB (H) 1662*256kB (H) 753*512kB () 350*1024kB (H) 316*2048kB () 0*4096kB = 6685248kB