From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f176.google.com (mail-pf0-f176.google.com [209.85.192.176]) by kanga.kvack.org (Postfix) with ESMTP id 8ABE96B0005 for ; Mon, 4 Apr 2016 03:22:50 -0400 (EDT) Received: by mail-pf0-f176.google.com with SMTP id e128so116646023pfe.3 for ; Mon, 04 Apr 2016 00:22:50 -0700 (PDT) Received: from mail.kernel.org (mail.kernel.org. [198.145.29.136]) by mx.google.com with ESMTPS id 67si39839359pfh.155.2016.04.04.00.22.49 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 04 Apr 2016 00:22:49 -0700 (PDT) Message-ID: <1459754566.19748.9.camel@kernel.org> Subject: /proc/meminfo question From: Ming Lin Date: Mon, 04 Apr 2016 00:22:46 -0700 Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: fengguang.wu@intel.com Hi, I'm debugging a memory leak in an internal driver. There is ~2G leak after stress tests. If I read below /proc/meminfo correctly, it doesn't show where the 2G memory is possibly used. Buffers + Cached + Active*/Inactive* + Slab* only about 300M. Is there other statistics not shown in /proc/meminfo or am I missing obvious things? root@target:~# uname -r 4.5.0+ root@target:~# echo 3 > /proc/sys/vm/drop_cachesA root@target:~# free A A A A A A A A A A A A A totalA A A A A A A usedA A A A A A A freeA A A A A sharedA A A A buffersA A A A A cached Mem:A A A A A A A 3787612A A A A 2182128A A A A 1605484A A A A A A A 1072A A A A A A A 1036A A A A A A 24240 -/+ buffers/cache:A A A A 2156852A A A A 1630760 Swap:A A A A A 15624188A A A A A A A 6812A A A 15617376 root@target:~# cat /proc/meminfoA MemTotal:A A A A A A A A 3787612 kB MemFree:A A A A A A A A A 1604336 kB MemAvailable:A A A A 1598460 kB Buffers:A A A A A A A A A A A A 1928 kB Cached:A A A A A A A A A A A A 24668 kB SwapCached:A A A A A A A A A 1344 kB Active:A A A A A A A A A A A A 27520 kB Inactive:A A A A A A A A A A 14184 kB Active(anon):A A A A A A 12504 kB Inactive(anon):A A A A A 3752 kB Active(file):A A A A A A 15016 kB Inactive(file):A A A A 10432 kB Unevictable:A A A A A A A A A A A 0 kB Mlocked:A A A A A A A A A A A A A A A 0 kB SwapTotal:A A A A A A 15624188 kB SwapFree:A A A A A A A 15617376 kB Dirty:A A A A A A A A A A A A A A A A 36 kB Writeback:A A A A A A A A A A A A A 0 kB AnonPages:A A A A A A A A A 14656 kB Mapped:A A A A A A A A A A A A 23328 kB Shmem:A A A A A A A A A A A A A A 1072 kB Slab:A A A A A A A A A A A A A A 94092 kB SReclaimable:A A A A A A 12324 kB SUnreclaim:A A A A A A A A 81768 kB KernelStack:A A A A A A A A 3344 kB PageTables:A A A A A A A A A 2936 kB NFS_Unstable:A A A A A A A A A A 0 kB Bounce:A A A A A A A A A A A A A A A A 0 kB WritebackTmp:A A A A A A A A A A 0 kB CommitLimit:A A A A 17517992 kB Committed_AS:A A A A A 155592 kB VmallocTotal:A A A 34359738367 kB VmallocUsed:A A A A A A A A A A A 0 kB VmallocChunk:A A A A A A A A A A 0 kB HardwareCorrupted:A A A A A 0 kB AnonHugePages:A A A A A A A A A 0 kB CmaTotal:A A A A A A A A A A A A A A 0 kB CmaFree:A A A A A A A A A A A A A A A 0 kB HugePages_Total:A A A A A A A 0 HugePages_Free:A A A A A A A A 0 HugePages_Rsvd:A A A A A A A A 0 HugePages_Surp:A A A A A A A A 0 Hugepagesize:A A A A A A A 2048 kB DirectMap4k:A A A A A A 205648 kB DirectMap2M:A A A A A 3872768 kBA root@target:~# page-typesA A A A A A A A A A A A A A flags page-countA A A A A A A MBA A symbolic-flags long-symbolic-flags 0x0000000000000000 A A A 1007923A A A A A 3937A A _________________________________________ 0x0000000001000000 A A A A A A A A A 1A A A A A A A A 0A A ________________________z________________ zero_page 0x0000000000100000 A A A A 131072A A A A A A 512A A ____________________n____________________ nopage 0x0000000000000008 A A A A A A A A A 1A A A A A A A A 0A A ___U_____________________________________ uptodate 0x0000000000000020 A A A A A A A A 32A A A A A A A A 0A A _____l___________________________________ lru 0x0000000000000024 A A A A A A A A 14A A A A A A A A 0A A __R__l___________________________________ referenced,lru 0x0000000000000028 A A A A A A A 142A A A A A A A A 0A A ___U_l___________________________________ uptodate,lru 0x0000000000004028 A A A A A A A 102A A A A A A A A 0A A ___U_l________b__________________________ uptodate,lru,swapbacked 0x000000000000002c A A A A A A A A 39A A A A A A A A 0A A __RU_l___________________________________ referenced,uptodate,lru 0x0000000000000040 A A A A A A A A 15A A A A A A A A 0A A ______A__________________________________ active 0x0000000000000060 A A A A A A A 450A A A A A A A A 1A A _____lA__________________________________ lru,active 0x0000000000000064 A A A A A A A A 80A A A A A A A A 0A A __R__lA__________________________________ referenced,lru,active 0x0000000000000068 A A A A A A A A 21A A A A A A A A 0A A ___U_lA__________________________________ uptodate,lru,active 0x000000000000006c A A A A A A A A 52A A A A A A A A 0A A __RU_lA__________________________________ referenced,uptodate,lru,active 0x0000000000000080 A A A A A 10471A A A A A A A 40A A _______S_________________________________ slab 0x0000000000006228 A A A A A A A A 28A A A A A A A A 0A A ___U_l___I___sb__________________________ uptodate,lru,reclaim,swapcache,swapbacked 0x0000000000000228 A A A A A A A A A 6A A A A A A A A 0A A ___U_l___I_______________________________ uptodate,lru,reclaim 0x0000000000004238 A A A A A A A 162A A A A A A A A 0A A ___UDl___I____b__________________________ uptodate,dirty,lru,reclaim,swapbacked 0x0000000000004278 A A A A A A A A A 2A A A A A A A A 0A A ___UDlA__I____b__________________________ uptodate,dirty,lru,active,reclaim,swapbacked 0x0000000000000800 A A A A A A A A A 1A A A A A A A A 0A A ___________M_____________________________ mmap 0x0000000000000804 A A A A A A A A A 1A A A A A A A A 0A A __R________M_____________________________ referenced,mmap 0x0000000000000808 A A A A A A A A A 4A A A A A A A A 0A A ___U_______M_____________________________ uptodate,mmap 0x0000000000000828 A A A A A A 1871A A A A A A A A 7A A ___U_l_____M_____________________________ uptodate,lru,mmap 0x000000000000082c A A A A A A A 668A A A A A A A A 2A A __RU_l_____M_____________________________ referenced,uptodate,lru,mmap 0x0000000000004838 A A A A A A A A A 2A A A A A A A A 0A A ___UDl_____M__b__________________________ uptodate,dirty,lru,mmap,swapbacked 0x0000000000000868 A A A A A A A 607A A A A A A A A 2A A ___U_lA____M_____________________________ uptodate,lru,active,mmap 0x000000000000086c A A A A A A 2754A A A A A A A 10A A __RU_lA____M_____________________________ referenced,uptodate,lru,active,mmap 0x0000000000000c00 A A A A A 12532A A A A A A A 48A A __________BM_____________________________ buddy,mmap 0x0000000000007028 A A A A A A A 105A A A A A A A A 0A A ___U_l______asb__________________________ uptodate,lru,anonymous,swapcache,swapbacked 0x0000000000005048 A A A A A A A A A 8A A A A A A A A 0A A ___U__A_____a_b__________________________ uptodate,active,anonymous,swapbacked 0x0000000000007068 A A A A A A A A A 7A A A A A A A A 0A A ___U_lA_____asb__________________________ uptodate,lru,active,anonymous,swapcache,swapbacked 0x0000000000007228 A A A A A A A A A 6A A A A A A A A 0A A ___U_l___I__asb__________________________ uptodate,lru,reclaim,anonymous,swapcache,swapbacked 0x0000000000007828 A A A A A A A 146A A A A A A A A 0A A ___U_l_____Masb__________________________ uptodate,lru,mmap,anonymous,swapcache,swapbacked 0x0000000000005838 A A A A A A A 380A A A A A A A A 1A A ___UDl_____Ma_b__________________________ uptodate,dirty,lru,mmap,anonymous,swapbacked 0x0000000000005848 A A A A A A A A A 6A A A A A A A A 0A A ___U__A____Ma_b__________________________ uptodate,active,mmap,anonymous,swapbacked 0x0000000000005868 A A A A A A 3084A A A A A A A 12A A ___U_lA____Ma_b__________________________ uptodate,lru,active,mmap,anonymous,swapbacked 0x0000000000007868 A A A A A A A A 10A A A A A A A A 0A A ___U_lA____Masb__________________________ uptodate,lru,active,mmap,anonymous,swapcache,swapbacked 0x000000000000586c A A A A A A A A A 7A A A A A A A A 0A A __RU_lA____Ma_b__________________________ referenced,uptodate,lru,active,mmap,anonymous,swapbacked 0x000000000000786c A A A A A A A A 26A A A A A A A A 0A A __RU_lA____Masb__________________________ referenced,uptodate,lru,active,mmap,anonymous,swapcache,swapbacked 0x0000000000005878 A A A A A A A 126A A A A A A A A 0A A ___UDlA____Ma_b__________________________ uptodate,dirty,lru,active,mmap,anonymous,swapbacked 0x000000000000787c A A A A A A A A A 1A A A A A A A A 0A A __RUDlA____Masb__________________________ referenced,uptodate,dirty,lru,active,mmap,anonymous,swapcache,swapbacked 0x0000000000007a28 A A A A A A A A A 9A A A A A A A A 0A A ___U_l___I_Masb__________________________ uptodate,lru,reclaim,mmap,anonymous,swapcache,swapbacked 0x0000000000005a38 A A A A A A A A A 8A A A A A A A A 0A A ___UDl___I_Ma_b__________________________ uptodate,dirty,lru,reclaim,mmap,anonymous,swapbacked 0x0000000000007a68 A A A A A A A A A 1A A A A A A A A 0A A ___U_lA__I_Masb__________________________ uptodate,lru,active,reclaim,mmap,anonymous,swapcache,swapbacked 0x0000000000005a78 A A A A A A A A A 9A A A A A A A A 0A A ___UDlA__I_Ma_b__________________________ uptodate,dirty,lru,active,reclaim,mmap,anonymous,swapbacked A A A A A A A A A A A A A total A A A 1172992A A A A A 4582 root@target:~#A -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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