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Message-ID: <4A449DAD.9030606@itcare.pl> Date: Fri, 26 Jun 2009 12:06:37 +0200 From: Paweł Staszewski <pstaszewski@...are.pl> To: unlisted-recipients:; (no To-header on input) CC: Linux Network Development list <netdev@...r.kernel.org> Subject: Re: rib_trie / Fix inflate_threshold_root. Now=15 size=11 bits Eric Dumazet pisze: > Paweł Staszewski a écrit : > >> cat /proc/vmallocinfo >> 0xf7ffe000-0xf8000000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfe6a000 ioremap >> 0xf8000000-0xf8007000 28672 acpi_tb_verify_table+0x1d/0x46 >> phys=dfef5000 ioremap >> 0xf8008000-0xf800a000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfef2000 ioremap >> 0xf800c000-0xf800e000 8192 >> acpi_ex_system_memory_space_handler+0xd6/0x208 phys=fed1f000 ioremap >> 0xf8010000-0xf8012000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfefb000 ioremap >> 0xf8014000-0xf8016000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfef4000 ioremap >> 0xf8018000-0xf801a000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfef3000 ioremap >> 0xf801c000-0xf801e000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfef1000 ioremap >> 0xf8020000-0xf8022000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfef0000 ioremap >> 0xf8024000-0xf8026000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfeef000 ioremap >> 0xf8028000-0xf802a000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfeee000 ioremap >> 0xf802c000-0xf802e000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfeed000 ioremap >> 0xf8030000-0xf8032000 8192 acpi_tb_verify_table+0x1d/0x46 >> phys=dfeec000 ioremap >> 0xf8038000-0xf803d000 20480 ich_force_enable_hpet+0x69/0x15a >> phys=fed1c000 ioremap >> 0xf803e000-0xf8040000 8192 hpet_enable+0x2a/0x21b phys=fed00000 ioremap >> 0xf8040000-0xf8046000 24576 alloc_iommu+0x18d/0x1d4 phys=feb00000 ioremap >> 0xf8048000-0xf804a000 8192 pcim_iomap+0x2f/0x3a phys=e1b21000 ioremap >> 0xf804c000-0xf804e000 8192 e1000_probe+0x229/0xa73 phys=e1b20000 ioremap >> 0xf804f000-0xf8051000 8192 reiserfs_init_bitmap_cache+0x32/0x65 >> pages=1 vmalloc >> 0xf8052000-0xf8064000 73728 journal_init+0x30/0x82a pages=17 vmalloc >> 0xf8065000-0xf8067000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e >> pages=1 vmalloc >> 0xf8068000-0xf806a000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e >> pages=1 vmalloc >> 0xf806b000-0xf806d000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e >> pages=1 vmalloc >> 0xf806e000-0xf8070000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e >> pages=1 vmalloc >> 0xf8071000-0xf8073000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e >> pages=1 vmalloc >> 0xf8080000-0xf80a1000 135168 e1000_probe+0x1ca/0xa73 phys=e1b00000 ioremap >> 0xf80a2000-0xf80a6000 16384 e1000e_setup_rx_resources+0x20/0xf7 >> pages=3 vmalloc >> 0xf80a7000-0xf80ab000 16384 e1000e_setup_tx_resources+0x17/0x96 >> pages=3 vmalloc >> 0xf80ac000-0xf80b0000 16384 e1000e_setup_rx_resources+0x20/0xf7 >> pages=3 vmalloc >> 0xf80b1000-0xf80b5000 16384 e1000e_setup_tx_resources+0x17/0x96 >> pages=3 vmalloc >> 0xf80c0000-0xf80e1000 135168 e1000_probe+0x1ca/0xa73 phys=e1a60000 ioremap >> 0xf8100000-0xf8121000 135168 e1000_probe+0x1ca/0xa73 phys=e1a20000 ioremap >> 0xf8122000-0xf81b3000 593920 journal_init+0x65b/0x82a pages=144 vmalloc >> 0xf81b4000-0xf822f000 503808 sys_swapon+0x392/0x8f3 pages=122 vmalloc >> 0xf846a000-0xf856c000 1056768 tnode_new+0x35/0x65 pages=257 vmalloc >> > > This is from a 32 bit kernel. > > This doesnt match your previous /proc/meminfo (from a 64bit kernel on a 12 GB machine) > > Of course, I would like /proc/vmallocinfo on your loaded router, not from > a dev machine :) > > Yes sorry for no info about it. I test the same kernel configurations on one 32bit machine and second 64bit here is meminfo from this 32bit machine working on kernel 2.6.30 cat /proc/meminfo MemTotal: 3625444 kB MemFree: 3043648 kB Buffers: 133968 kB Cached: 36316 kB SwapCached: 0 kB Active: 256868 kB Inactive: 76252 kB Active(anon): 163064 kB Inactive(anon): 0 kB Active(file): 93804 kB Inactive(file): 76252 kB Unevictable: 0 kB Mlocked: 0 kB HighTotal: 2758160 kB HighFree: 2556136 kB LowTotal: 867284 kB LowFree: 487512 kB SwapTotal: 995896 kB SwapFree: 995896 kB Dirty: 3624 kB Writeback: 0 kB AnonPages: 162912 kB Mapped: 3612 kB Slab: 235888 kB SReclaimable: 46408 kB SUnreclaim: 189480 kB PageTables: 384 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 2808616 kB Committed_AS: 170648 kB VmallocTotal: 122880 kB VmallocUsed: 2876 kB VmallocChunk: 109824 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 4096 kB DirectMap4k: 8184 kB DirectMap4M: 901120 kB and vmallocinfo cat /proc/vmallocinfo 0xf7ffe000-0xf8000000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfe6a000 ioremap 0xf8000000-0xf8007000 28672 acpi_tb_verify_table+0x1d/0x46 phys=dfef5000 ioremap 0xf8008000-0xf800a000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfef2000 ioremap 0xf800c000-0xf800e000 8192 acpi_ex_system_memory_space_handler+0xd6/0x208 phys=fed1f000 ioremap 0xf8010000-0xf8012000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfefb000 ioremap 0xf8014000-0xf8016000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfef4000 ioremap 0xf8018000-0xf801a000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfef3000 ioremap 0xf801c000-0xf801e000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfef1000 ioremap 0xf8020000-0xf8022000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfef0000 ioremap 0xf8024000-0xf8026000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfeef000 ioremap 0xf8028000-0xf802a000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfeee000 ioremap 0xf802c000-0xf802e000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfeed000 ioremap 0xf8030000-0xf8032000 8192 acpi_tb_verify_table+0x1d/0x46 phys=dfeec000 ioremap 0xf8038000-0xf803d000 20480 ich_force_enable_hpet+0x69/0x15a phys=fed1c000 ioremap 0xf803e000-0xf8040000 8192 hpet_enable+0x2a/0x21b phys=fed00000 ioremap 0xf8040000-0xf8046000 24576 alloc_iommu+0x18d/0x1d4 phys=feb00000 ioremap 0xf8048000-0xf804a000 8192 pcim_iomap+0x2f/0x3a phys=e1b21000 ioremap 0xf804c000-0xf804e000 8192 e1000_probe+0x229/0xa73 phys=e1b20000 ioremap 0xf804f000-0xf8051000 8192 reiserfs_init_bitmap_cache+0x32/0x65 pages=1 vmalloc 0xf8052000-0xf8064000 73728 journal_init+0x30/0x82a pages=17 vmalloc 0xf8065000-0xf8067000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e pages=1 vmalloc 0xf8068000-0xf806a000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e pages=1 vmalloc 0xf806b000-0xf806d000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e pages=1 vmalloc 0xf806e000-0xf8070000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e pages=1 vmalloc 0xf8071000-0xf8073000 8192 reiserfs_allocate_list_bitmaps+0x27/0x7e pages=1 vmalloc 0xf8080000-0xf80a1000 135168 e1000_probe+0x1ca/0xa73 phys=e1b00000 ioremap 0xf80a2000-0xf80a6000 16384 e1000e_setup_rx_resources+0x20/0xf7 pages=3 vmalloc 0xf80a7000-0xf80ab000 16384 e1000e_setup_tx_resources+0x17/0x96 pages=3 vmalloc 0xf80ac000-0xf80b0000 16384 e1000e_setup_rx_resources+0x20/0xf7 pages=3 vmalloc 0xf80b1000-0xf80b5000 16384 e1000e_setup_tx_resources+0x17/0x96 pages=3 vmalloc 0xf80c0000-0xf80e1000 135168 e1000_probe+0x1ca/0xa73 phys=e1a60000 ioremap 0xf8100000-0xf8121000 135168 e1000_probe+0x1ca/0xa73 phys=e1a20000 ioremap 0xf8122000-0xf81b3000 593920 journal_init+0x65b/0x82a pages=144 vmalloc 0xf81b4000-0xf822f000 503808 sys_swapon+0x392/0x8f3 pages=122 vmalloc 0xf8bbc000-0xf8cbe000 1056768 tnode_new+0x35/0x65 pages=257 vmalloc And next machine with kernel 2.6.29.3 dmesg: Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits Fix inflate_threshold_root. Now=15 size=11 bits cat /proc/meminfo MemTotal: 2072652 kB MemFree: 496960 kB Buffers: 267620 kB Cached: 895212 kB SwapCached: 0 kB Active: 675744 kB Inactive: 703312 kB Active(anon): 215848 kB Inactive(anon): 0 kB Active(file): 459896 kB Inactive(file): 703312 kB Unevictable: 0 kB Mlocked: 0 kB HighTotal: 1186696 kB HighFree: 151156 kB LowTotal: 885956 kB LowFree: 345804 kB SwapTotal: 1975984 kB SwapFree: 1975984 kB Dirty: 20 kB Writeback: 0 kB AnonPages: 215724 kB Mapped: 6120 kB Slab: 186652 kB SReclaimable: 125832 kB SUnreclaim: 60820 kB PageTables: 416 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 3012308 kB Committed_AS: 223692 kB VmallocTotal: 122880 kB VmallocUsed: 3192 kB VmallocChunk: 108436 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 4096 kB DirectMap4k: 8184 kB DirectMap4M: 901120 kB cat /proc/vmallocinfo 0xf7ffe000-0xf8000000 8192 acpi_tb_verify_table+0x1d/0x46 phys=7fee0000 ioremap 0xf8000000-0xf8005000 20480 acpi_tb_verify_table+0x1d/0x46 phys=7fee3000 ioremap 0xf8006000-0xf8008000 8192 acpi_tb_verify_table+0x1d/0x46 phys=7fee3000 ioremap 0xf800a000-0xf800c000 8192 acpi_tb_verify_table+0x1d/0x46 phys=7fee6000 ioremap 0xf800d000-0xf800f000 8192 reiserfs_init_bitmap_cache+0x3b/0x80 pages=1 vmalloc 0xf8010000-0xf8022000 73728 journal_init+0x30/0x8f0 pages=17 vmalloc 0xf8023000-0xf8025000 8192 reiserfs_allocate_list_bitmaps+0x2d/0x90 pages=1 vmalloc 0xf8026000-0xf8028000 8192 reiserfs_allocate_list_bitmaps+0x2d/0x90 pages=1 vmalloc 0xf8029000-0xf802b000 8192 reiserfs_allocate_list_bitmaps+0x2d/0x90 pages=1 vmalloc 0xf802c000-0xf802e000 8192 reiserfs_allocate_list_bitmaps+0x2d/0x90 pages=1 vmalloc 0xf802f000-0xf8031000 8192 reiserfs_allocate_list_bitmaps+0x2d/0x90 pages=1 vmalloc 0xf803e000-0xf8040000 8192 e1000_setup_all_tx_resources+0x57/0x660 pages=1 vmalloc 0xf8040000-0xf8061000 135168 e1000_probe+0x207/0xeb0 phys=f5000000 ioremap 0xf8062000-0xf8064000 8192 e1000_setup_all_rx_resources+0x57/0x6d0 pages=1 vmalloc 0xf8065000-0xf8067000 8192 e1000_setup_all_tx_resources+0x57/0x660 pages=1 vmalloc 0xf8068000-0xf806a000 8192 e1000_setup_all_rx_resources+0x57/0x6d0 pages=1 vmalloc 0xf806b000-0xf806d000 8192 e1000_setup_all_tx_resources+0x57/0x660 pages=1 vmalloc 0xf806e000-0xf8070000 8192 e1000_setup_all_rx_resources+0x57/0x6d0 pages=1 vmalloc 0xf8080000-0xf80a1000 135168 e1000_probe+0x207/0xeb0 phys=f1040000 ioremap 0xf80c0000-0xf80e1000 135168 e1000_probe+0x207/0xeb0 phys=f4000000 ioremap 0xf80e2000-0xf8173000 593920 journal_init+0x56e/0x8f0 pages=144 vmalloc 0xf8174000-0xf8267000 995328 sys_swapon+0x548/0xa30 pages=242 vmalloc 0xf8d17000-0xf8e19000 1056768 tnode_new+0x7f/0x90 pages=257 vmalloc because i have this info on 5 machines that working in ibgp mesh And only one 64bit dev machine that is one of failover member - but i kill this machine after upgrade to kernel 2.6.31-rc1 >> Eric Dumazet pisze: >> >>> Paweł Staszewski a écrit : >>> >>> >>>> Hello ALL >>>> >>>> Some time ago i report this: >>>> http://bugzilla.kernel.org/show_bug.cgi?id=6648 >>>> >>>> and now with 2.6.29 / 2.6.29.1 / 2.6.29.3 and 2.6.30 it back >>>> dmesg output: >>>> oprofile: using NMI interrupt. >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> Fix inflate_threshold_root. Now=15 size=11 bits >>>> >>>> >>> Curious, you seem to hit an old alloc_pages limit()... (MAX_ORDER >>> allocation) >>> >>> Your root node has 2^18 = 262144 pointers of 8 bytes -> 2097152 bytes >>> (+ header -> 4194304 bytes) >>> >>> But since following commit, we should use vmalloc() so this >>> PAGE_SIZE<<10) limit >>> should not anymore be applied. >>> >>> Could you do a "cat /proc/vmallocinfo" just to check your big tnodes >>> are vmalloced() ? >>> >>> >>> commit 15be75cdb5db442d0e33d37b20832b88f3ccd383 >>> Author: Stephen Hemminger <shemminger@...tta.com> >>> Date: Thu Apr 10 02:56:38 2008 -0700 >>> >>> IPV4: fib_trie use vmalloc for large tnodes >>> >>> Use vmalloc rather than alloc_pages to avoid wasting memory. >>> The problem is that tnode structure has a power of 2 sized array, >>> plus a header. So the current code wastes almost half the memory >>> allocated because it always needs the next bigger size to hold >>> that small header. >>> >>> This is similar to an earlier patch by Eric, but instead of a list >>> and lock, I used a workqueue to handle the fact that vfree can't >>> be done in interrupt context. >>> >>> Signed-off-by: Stephen Hemminger <shemminger@...tta.com> >>> Signed-off-by: David S. Miller <davem@...emloft.net> >>> >>> >>> >>> >>>> cat /proc/net/fib_triestat >>>> Basic info: size of leaf: 40 bytes, size of tnode: 56 bytes. >>>> Main: >>>> Aver depth: 2.28 >>>> Max depth: 6 >>>> Leaves: 276539 >>>> Prefixes: 289922 >>>> Internal nodes: 66762 >>>> 1: 35046 2: 13824 3: 9508 4: 4897 5: 2331 6: 1149 7: 5 >>>> 9: 1 18: 1 >>>> Pointers: 691228 >>>> Null ptrs: 347928 >>>> Total size: 35709 kB >>>> >>>> Counters: >>>> --------- >>>> gets = 26276593 >>>> backtracks = 547306 >>>> semantic match passed = 26188746 >>>> semantic match miss = 1117 >>>> null node hit= 27285055 >>>> skipped node resize = 0 >>>> >>>> Local: >>>> Aver depth: 3.33 >>>> Max depth: 4 >>>> Leaves: 9 >>>> Prefixes: 10 >>>> Internal nodes: 8 >>>> 1: 8 >>>> Pointers: 16 >>>> Null ptrs: 0 >>>> Total size: 2 kB >>>> >>>> Counters: >>>> --------- >>>> gets = 26642350 >>>> backtracks = 1282818 >>>> semantic match passed = 18166 >>>> semantic match miss = 0 >>>> null node hit= 0 >>>> skipped node resize = 0 >>>> >>>> >>>> >>>> This machine is running bgpd with two bgp peers / full route table >>>> >>>> cat /proc/meminfo >>>> MemTotal: 12279032 kB >>>> MemFree: 11521920 kB >>>> Buffers: 80288 kB >>>> Cached: 34416 kB >>>> SwapCached: 0 kB >>>> Active: 286816 kB >>>> Inactive: 82024 kB >>>> Active(anon): 254296 kB >>>> Inactive(anon): 0 kB >>>> Active(file): 32520 kB >>>> Inactive(file): 82024 kB >>>> Unevictable: 0 kB >>>> Mlocked: 0 kB >>>> SwapTotal: 987988 kB >>>> SwapFree: 987988 kB >>>> Dirty: 1140 kB >>>> Writeback: 0 kB >>>> AnonPages: 254164 kB >>>> Mapped: 5440 kB >>>> Slab: 365084 kB >>>> SReclaimable: 28784 kB >>>> SUnreclaim: 336300 kB >>>> PageTables: 2104 kB >>>> NFS_Unstable: 0 kB >>>> Bounce: 0 kB >>>> WritebackTmp: 0 kB >>>> CommitLimit: 7127504 kB >>>> Committed_AS: 267704 kB >>>> VmallocTotal: 34359738367 kB >>>> VmallocUsed: 11824 kB >>>> VmallocChunk: 34359707815 kB >>>> HugePages_Total: 0 >>>> HugePages_Free: 0 >>>> HugePages_Rsvd: 0 >>>> HugePages_Surp: 0 >>>> Hugepagesize: 2048 kB >>>> DirectMap4k: 3392 kB >>>> DirectMap2M: 12578816 kB >>>> >>>> >>>> Interfaces mtu is1500 >>>> >>>> >>> >>> >>> >> -- >> To unsubscribe from this list: send the line "unsubscribe netdev" in >> the body of a message to majordomo@...r.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> >> >> > > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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