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    Subject2.6.10-rc2-bk7 - lots of "page allocation failure. order:0, mode:0x20"
    Date
    Host: 2.6.10-rc2-bk7, SMP, 4GB RAM, about 200M into swap

    # cat /proc/sys/vm/min_free_kbytes
    10240

    I've seen this reported elsewhere, but thought I'd provide a few more examples. It
    seems to happen mostly during scp'ing of large files to the machine. The network
    config of this machine is Linux bridge, going through an e1000 card. Increasing
    min_free_kbytes doesn't seem to help.

    Some examples:

    uml-2.4: page allocation failure. order:0, mode:0x20
    [<c0136fa9>] __alloc_pages+0x1b7/0x35b
    [<c0137172>] __get_free_pages+0x25/0x3f
    [<c031069a>] ip_rcv_finish+0x211/0x28b
    [<c013a224>] kmem_getpages+0x21/0xc9
    [<c013aeb7>] cache_grow+0xab/0x14d
    [<c013b0d5>] cache_alloc_refill+0x17c/0x221
    [<c0310489>] ip_rcv_finish+0x0/0x28b
    [<c013b347>] kmem_cache_alloc+0x4b/0x4d
    [<c037d936>] br_nf_pre_routing+0x191/0x3fc
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c0304025>] nf_iterate+0x71/0xa2
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c0304381>] nf_hook_slow+0x6b/0xf9
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c03797f7>] br_handle_frame+0xe4/0x1c9
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c02fa752>] netif_receive_skb+0x114/0x275
    [<c0113447>] finish_task_switch+0x3a/0x83
    [<c02fa931>] process_backlog+0x7e/0x10b
    [<c02faa35>] net_rx_action+0x77/0xf6
    [<c011cba7>] __do_softirq+0xb7/0xc6
    [<c011cbe3>] do_softirq+0x2d/0x2f
    [<c02fa51d>] netif_rx_ni+0x3b/0x3d
    [<c028230e>] tun_chr_writev+0x11c/0x18a
    [<c028237c>] tun_chr_write+0x0/0x3b
    [<c02823b3>] tun_chr_write+0x37/0x3b
    [<c0151200>] vfs_write+0xb0/0x119
    [<c0152086>] fget_light+0x84/0x86
    [<c015133a>] sys_write+0x51/0x80
    [<c010243b>] syscall_call+0x7/0xb

    swapper: page allocation failure. order:0, mode:0x20
    [<c0136fa9>] __alloc_pages+0x1b7/0x35b
    [<c0137172>] __get_free_pages+0x25/0x3f
    [<c013a224>] kmem_getpages+0x21/0xc9
    [<c013aeb7>] cache_grow+0xab/0x14d
    [<c013b0d5>] cache_alloc_refill+0x17c/0x221
    [<c013b347>] kmem_cache_alloc+0x4b/0x4d
    [<c037d936>] br_nf_pre_routing+0x191/0x3fc
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c0304025>] nf_iterate+0x71/0xa2
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c0304381>] nf_hook_slow+0x6b/0xf9
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c03797f7>] br_handle_frame+0xe4/0x1c9
    [<c0379604>] br_handle_frame_finish+0x0/0x10f
    [<c02fa752>] netif_receive_skb+0x114/0x275
    [<c026bb24>] e1000_clean_rx_irq+0x12e/0x447
    [<c026b765>] e1000_clean+0x51/0xca
    [<c02faa35>] net_rx_action+0x77/0xf6
    [<c011cba7>] __do_softirq+0xb7/0xc6
    [<c011cbe3>] do_softirq+0x2d/0x2f
    [<c01046b6>] do_IRQ+0x1e/0x24
    [<c0102db2>] common_interrupt+0x1a/0x20
    [<c01005da>] mwait_idle+0x31/0x48
    [<c01005a0>] cpu_idle+0x33/0x3c

    -Chris

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