(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). Sigh. This shouldn't happen. I'm going to go ahead and assume that some earlier kernels didn't do this :( Is the writeout to /dev/sde1 slow right from the start, or does it start out fast and later slow down? `dd' isn't very efficient without the `bs' option - it reads and writes in 512-byte chunks. But that shouldn't be causing these problems. On Wed, 14 Apr 2010 08:36:08 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=15783 > > Summary: slow dd and multiple "page allocation failure" > messages > Product: Memory Management > Version: 2.5 > Kernel Version: 2.6.33.2 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: akpm@xxxxxxxxxxxxxxxxxxxx > ReportedBy: walter.haidinger@xxxxxx > Regression: No > > > There are some other bugzilla entries regarding "page allocation failure" > messages, but for me the problem is reproducible: > I've tried to zero-out a sata disk with 'dd if=/dev/zero of=/dev/sde1' over > night and within about 5 hours over 100 "page allocation failure" messages" > were logged. > > Please note that 'dd if=/dev/zero of=/dev/sde1' IO throughput is reproducible > _slow_, only about 10 (ten) MiB/s. In contrast, 'badblocks -w /dev/sde1' has 10 > times (>100 MiB/s). Odd. Btw, the harddisk (Seagate ST31500341AS) has no > problems. sata_nv is the driver module used. > > The system itself has 6 GiB RAM and idle most of the time. Especially no > virtual machines or other memory hogs were/are currently running. Active memory > is usually about 2 GiB (see /proc/meminfo below), leaving 4 for buffers/cache. > Still a single dd can cause memory pressure? > > One more to note: Swap-space is a dmcrypt LVM logical volume. > > I'm adding the dmesg kernel message and some system info (lspci,lsmod) below. > Please tell me if you need any additional info (kernel config, etc). > > OS: openSUSE 11.2 x86_64 with custom 2.6.33.2 kernel compiled from mainline. > dd is version 7.1 from coreutils-7.1-3.2.x86_64 rpm. > Hardware: Athlon X2 BE-2350 on a MSI MS-7250 motherboard > > # dmesg > ... > [800144.472687] swapper: page allocation failure. order:2, mode:0x4020 > [800144.472701] Pid: 0, comm: swapper Not tainted 2.6.33.2-vmhost64 #13 > [800144.472706] Call Trace: > [800144.472710] <IRQ> [<ffffffff810a94dd>] __alloc_pages_nodemask+0x55d/0x650 > [800144.472726] [<ffffffff81257348>] ? dev_alloc_skb+0x18/0x30 > [800144.472732] [<ffffffff810a95e2>] __get_free_pages+0x12/0x50 > [800144.472739] [<ffffffff810d6dbc>] __kmalloc_track_caller+0xdc/0xe0 > [800144.472745] [<ffffffff8125660f>] __alloc_skb+0x6f/0x170 > [800144.472750] [<ffffffff81257348>] dev_alloc_skb+0x18/0x30 > [800144.472782] [<ffffffffa0232298>] nv_alloc_rx_optimized+0x198/0x260 > [forcedeth] > [800144.472792] [<ffffffffa0234033>] ? nv_rx_process_optimized+0xa3/0x2a0 > [forcedeth] > [800144.472802] [<ffffffffa0235956>] nv_napi_poll+0x86/0x600 [forcedeth] > [800144.472809] [<ffffffff812a3b7e>] ? tcp_send_probe0+0x7e/0x110 > [800144.472816] [<ffffffff8125ecdb>] net_rx_action+0xdb/0x190 > [800144.472822] [<ffffffff810491b6>] __do_softirq+0xa6/0x130 > [800144.472831] [<ffffffffa02344bd>] ? nv_nic_irq_optimized+0x6d/0xa0 > [forcedeth] > [800144.472840] [<ffffffff81003c0c>] call_softirq+0x1c/0x30 > [800144.472845] [<ffffffff81005ccd>] do_softirq+0x4d/0x80 > [800144.472850] [<ffffffff81048ecd>] irq_exit+0x7d/0x90 > [800144.472855] [<ffffffff810052c0>] do_IRQ+0x70/0xf0 > [800144.472861] [<ffffffff812f6713>] ret_from_intr+0x0/0xa > [800144.472865] <EOI> [<ffffffff8100b584>] ? default_idle+0x24/0x40 > [800144.472873] [<ffffffff8100b6c3>] c1e_idle+0x83/0x100 > [800144.472879] [<ffffffff8105eff5>] ? atomic_notifier_call_chain+0x15/0x20 > [800144.472886] [<ffffffff81001e85>] cpu_idle+0xa5/0x100 > [800144.472893] [<ffffffff812e40d4>] rest_init+0x74/0x80 > [800144.472899] [<ffffffff81661b22>] start_kernel+0x3b3/0x3bf > [800144.472905] [<ffffffff81661123>] x86_64_start_reservations+0x120/0x124 > [800144.472910] [<ffffffff81661208>] x86_64_start_kernel+0xe1/0xe8 > [800144.472915] Mem-Info: > [800144.472918] DMA per-cpu: > [800144.472922] CPU 0: hi: 0, btch: 1 usd: 0 > [800144.472926] CPU 1: hi: 0, btch: 1 usd: 0 > [800144.472930] DMA32 per-cpu: > [800144.472934] CPU 0: hi: 186, btch: 31 usd: 45 > [800144.472938] CPU 1: hi: 186, btch: 31 usd: 41 > [800144.472942] Normal per-cpu: > [800144.472945] CPU 0: hi: 186, btch: 31 usd: 174 > [800144.472949] CPU 1: hi: 186, btch: 31 usd: 161 > [800144.472956] active_anon:140610 inactive_anon:62465 isolated_anon:0 > [800144.472957] active_file:389749 inactive_file:423491 isolated_file:0 > [800144.472959] unevictable:0 dirty:46557 writeback:0 unstable:0 > [800144.472960] free:61093 slab_reclaimable:113077 slab_unreclaimable:43152 > [800144.472961] mapped:7423 shmem:2438 pagetables:5126 bounce:0 > [800144.472980] DMA free:15832kB min:160kB low:200kB high:240kB active_anon:0kB > inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB > isolated(anon):0kB isolated(file):0kB present:15272kB mlocked:0kB dirty:0kB > writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:8kB > kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB > pages_scanned:0 all_unreclaimable? yes > [800144.472998] lowmem_reserve[]: 0 2872 6028 6028 > [800144.473008] DMA32 free:185784kB min:31144kB low:38928kB high:46716kB > active_anon:76516kB inactive_anon:86588kB active_file:746584kB > inactive_file:815404kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > present:2940960kB mlocked:0kB dirty:128756kB writeback:0kB mapped:3100kB > shmem:48kB slab_reclaimable:367280kB slab_unreclaimable:114280kB > kernel_stack:248kB pagetables:1220kB unstable:0kB bounce:0kB writeback_tmp:0kB > pages_scanned:0 all_unreclaimable? no > [800144.473028] lowmem_reserve[]: 0 0 3156 3156 > [800144.473037] Normal free:42756kB min:34224kB low:42780kB high:51336kB > active_anon:485924kB inactive_anon:163272kB active_file:812412kB > inactive_file:878560kB unevictable:0kB isolated(anon):0kB isolated(file):0kB > present:3232000kB mlocked:0kB dirty:57472kB writeback:0kB mapped:26592kB > shmem:9704kB slab_reclaimable:85028kB slab_unreclaimable:58320kB > kernel_stack:4128kB pagetables:19284kB unstable:0kB bounce:0kB > writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no > [800144.473057] lowmem_reserve[]: 0 0 0 0 > [800144.473062] DMA: 4*4kB 3*8kB 3*16kB 2*32kB 3*64kB 3*128kB 1*256kB 1*512kB > 2*1024kB 2*2048kB 2*4096kB = 15832kB > [800144.473075] DMA32: 45342*4kB 0*8kB 1*16kB 0*32kB 1*64kB 0*128kB 1*256kB > 0*512kB 0*1024kB 0*2048kB 1*4096kB = 185800kB > [800144.473087] Normal: 9685*4kB 0*8kB 1*16kB 1*32kB 0*64kB 1*128kB 1*256kB > 1*512kB 1*1024kB 1*2048kB 0*4096kB = 42756kB > [800144.473100] 820255 total pagecache pages > [800144.473103] 4556 pages in swap cache > [800144.473108] Swap cache stats: add 27731, delete 23175, find 4074847/4075448 > [800144.473112] Free swap = 10257060kB > [800144.473116] Total swap = 10348392kB > [800144.513770] 1572864 pages RAM > [800144.513786] 43214 pages reserved > [800144.513789] 933611 pages shared > [800144.513792] 587054 pages non-shared > > # grep "page allocation failure" /var/log/allmessages | tail -n 30 > Apr 14 06:41:32 vmhost kernel: [795264.472696] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 06:41:32 vmhost kernel: [795264.514764] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 06:48:57 vmhost kernel: [795709.282767] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 06:49:40 vmhost kernel: [795752.472794] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:00:51 vmhost kernel: [796423.473152] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:06:57 vmhost kernel: [796789.472681] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:09:45 vmhost kernel: [796956.780137] dd: page allocation failure. > order:2, mode:0x4020 > Apr 14 07:12:02 vmhost kernel: [797094.472832] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:16:15 vmhost kernel: [797347.399274] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:16:15 vmhost kernel: [797347.439814] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:18:08 vmhost kernel: [797460.475082] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:23:13 vmhost kernel: [797765.475010] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:24:06 vmhost kernel: [797818.282571] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:24:14 vmhost kernel: [797826.474998] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:25:15 vmhost kernel: [797887.472741] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:26:16 vmhost kernel: [797948.472813] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:29:05 vmhost kernel: [798117.492686] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:29:06 vmhost kernel: [798117.538250] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:29:06 vmhost kernel: [798117.584141] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:29:19 vmhost kernel: [798131.472943] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:34:06 vmhost kernel: [798418.066793] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:37:27 vmhost kernel: [798619.472779] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:39:09 vmhost kernel: [798720.620177] nmbd: page allocation failure. > order:2, mode:0x4020 > Apr 14 07:43:33 vmhost kernel: [798985.472759] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > Apr 14 07:44:09 vmhost kernel: [799021.350169] nmbd: page allocation failure. > order:2, mode:0x4020 > Apr 14 07:56:46 vmhost kernel: [799778.472862] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 08:00:50 vmhost kernel: [800022.472689] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 08:00:50 vmhost kernel: [800022.512410] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 08:02:52 vmhost kernel: [800144.472687] swapper: page allocation > failure. order:2, mode:0x4020 > Apr 14 08:11:00 vmhost kernel: [800632.472900] ksoftirqd/0: page allocation > failure. order:2, mode:0x4020 > > #uname -a > Linux vmhost.private 2.6.33.2-vmhost64 #13 SMP Sat Apr 3 13:59:32 CEST 2010 > x86_64 x86_64 x86_64 GNU/Linux > > #cat /proc/meminfo > MemTotal: 6118600 kB > MemFree: 229480 kB > Buffers: 3073148 kB > Cached: 262476 kB > SwapCached: 18124 kB > Active: 1900516 kB > Inactive: 2243036 kB > Active(anon): 569736 kB > Inactive(anon): 248008 kB > Active(file): 1330780 kB > Inactive(file): 1995028 kB > Unevictable: 0 kB > Mlocked: 0 kB > SwapTotal: 10348392 kB > SwapFree: 10255720 kB > Dirty: 190724 kB > Writeback: 0 kB > AnonPages: 790712 kB > Mapped: 33872 kB > Shmem: 9752 kB > Slab: 552152 kB > SReclaimable: 378800 kB > SUnreclaim: 173352 kB > KernelStack: 4400 kB > PageTables: 20760 kB > NFS_Unstable: 0 kB > Bounce: 0 kB > WritebackTmp: 0 kB > CommitLimit: 13407692 kB > Committed_AS: 1495296 kB > VmallocTotal: 34359738367 kB > VmallocUsed: 288944 kB > VmallocChunk: 34359412148 kB > HardwareCorrupted: 0 kB > HugePages_Total: 0 > HugePages_Free: 0 > HugePages_Rsvd: 0 > HugePages_Surp: 0 > Hugepagesize: 2048 kB > DirectMap4k: 10048 kB > DirectMap2M: 6281216 kB > > #lspci > 00:00.0 RAM memory: nVidia Corporation MCP55 Memory Controller (rev a1) > 00:01.0 ISA bridge: nVidia Corporation MCP55 LPC Bridge (rev a2) > 00:01.1 SMBus: nVidia Corporation MCP55 SMBus (rev a2) > 00:02.0 USB Controller: nVidia Corporation MCP55 USB Controller (rev a1) > 00:02.1 USB Controller: nVidia Corporation MCP55 USB Controller (rev a2) > 00:04.0 IDE interface: nVidia Corporation MCP55 IDE (rev a1) > 00:05.0 RAID bus controller: nVidia Corporation MCP55 SATA Controller (rev a2) > 00:05.1 RAID bus controller: nVidia Corporation MCP55 SATA Controller (rev a2) > 00:05.2 RAID bus controller: nVidia Corporation MCP55 SATA Controller (rev a2) > 00:06.0 PCI bridge: nVidia Corporation MCP55 PCI bridge (rev a2) > 00:06.1 Audio device: nVidia Corporation MCP55 High Definition Audio (rev a2) > 00:08.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a2) > 00:09.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a2) > 00:0a.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2) > 00:0b.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2) > 00:0c.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2) > 00:0d.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2) > 00:0e.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2) > 00:0f.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a2) > 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] > HyperTransport Technology Configuration > 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address > Map > 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM > Controller > 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] > Miscellaneous Control > 01:00.0 Multimedia video controller: Internext Compression Inc iTVC16 (CX23416) > MPEG-2 Encoder (rev 01) > 01:01.0 Multimedia video controller: Internext Compression Inc iTVC16 (CX23416) > MPEG-2 Encoder (rev 01) > 01:02.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01) > 05:00.0 Mass storage controller: Silicon Image, Inc. SiI 3132 Serial ATA Raid > II Controller (rev 01) > 07:00.0 VGA compatible controller: nVidia Corporation NV44 [GeForce 6200 LE] > (rev a1) > > -- > Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are on the CC list for the bug. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>