cat /etc/debian_version
7.1
uname -a
Linux nassounet 3.2.0-4-orion5x #1 Debian 3.2.41-2 armv5tel GNU/Linux
When settings MTU to 9000 (ifconfig eth0 mtu 9000) :
[4098918.032189] mv643xx_eth_port mv643xx_eth_port.0: eth0: link up,
1000 Mb/s, full duplex, flow control disabled
When having heavy network usage (300MB file transfer using NFS) :
[4101722.937455] swapper: page allocation failure: order:2, mode:0x20
[4101722.943705] [<c0017f90>] (unwind_backtrace+0x0/0xe0) from
[<c0091194>] (warn_alloc_failed+0xec/0x118)
[4101722.953115] [<c0091194>] (warn_alloc_failed+0xec/0x118) from
[<c009348c>] (__alloc_pages_nodemask+0x634/0x718)
[4101722.963303] [<c009348c>] (__alloc_pages_nodemask+0x634/0x718) from
[<c028caec>] (cache_alloc_refill+0x25c/0x510)
[4101722.973678] [<c028caec>] (cache_alloc_refill+0x25c/0x510) from
[<c00bc610>] (__kmalloc_track_caller+0xa0/0x15c)
[4101722.983967] [<c00bc610>] (__kmalloc_track_caller+0xa0/0x15c) from
[<c01fb860>] (__alloc_skb+0x50/0xf0)
[4101722.993455] [<c01fb860>] (__alloc_skb+0x50/0xf0) from [<c01fb918>]
(dev_alloc_skb+0x18/0x3c)
[4101723.002126] [<c01fb918>] (dev_alloc_skb+0x18/0x3c) from
[<bf12dd78>] (rxq_refill+0x7c/0x1e8 [mv643xx_eth])
[4101723.012020] [<bf12dd78>] (rxq_refill+0x7c/0x1e8 [mv643xx_eth]) from
[<bf12e4e8>] (mv643xx_eth_poll+0x560/0x5e8 [mv643xx_eth])
[4101723.023542] [<bf12e4e8>] (mv643xx_eth_poll+0x560/0x5e8
[mv643xx_eth]) from [<c02053cc>] (net_rx_action+0x88/0x26c)
[4101723.034089] [<c02053cc>] (net_rx_action+0x88/0x26c) from
[<c0030ad0>] (__do_softirq+0xe8/0x1ec)
[4101723.042969] [<c0030ad0>] (__do_softirq+0xe8/0x1ec) from
[<c0030f1c>] (irq_exit+0x40/0x94)
[4101723.051344] [<c0030f1c>] (irq_exit+0x40/0x94) from [<c0013078>]
(handle_IRQ+0x64/0x84)
[4101723.059447] [<c0013078>] (handle_IRQ+0x64/0x84) from [<c0011dd4>]
(__irq_svc+0x34/0x64)
[4101723.067635] [<c0011dd4>] (__irq_svc+0x34/0x64) from [<c0013360>]
(cpu_idle+0x8c/0xcc)
[4101723.075657] [<c0013360>] (cpu_idle+0x8c/0xcc) from [<c039871c>]
(start_kernel+0x2ac/0x300)
[4101723.084072] Mem-info:
[4101723.086518] Normal per-cpu:
[4101723.089486] CPU 0: hi: 90, btch: 15 usd: 75
[4101723.094474] active_anon:3779 inactive_anon:10916 isolated_anon:0
[4101723.094489] active_file:11966 inactive_file:12463 isolated_file:0
[4101723.094506] unevictable:0 dirty:69 writeback:0 unstable:0
[4101723.094521] free:14147 slab_reclaimable:5963 slab_unreclaimable:2227
[4101723.094538] mapped:3882 shmem:172 pagetables:651 bounce:0
[4101723.124899] Normal free:56588kB min:2032kB low:2540kB high:3048kB
active_anon:15116kB inactive_anon:43664kB active_file:47864kB
inactive_file:49852kB unevictable:0kB isolated(anon):0kB
isolated(file):0kB present:259072kB mlocked:0kB dirty:276kB
writeback:0kB mapped:15528kB shmem:688kB slab_reclaimable:23852kB
slab_unreclaimable:8908kB kernel_stack:2144kB pagetables:2604kB
unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0
all_unreclaimable? no
[4101723.164829] lowmem_reserve[]: 0 0
[4101723.168338] Normal: 5201*4kB 4473*8kB 0*16kB 0*32kB 0*64kB 0*128kB
0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 56588kB
[4101723.179363] 26133 total pagecache pages
[4101723.183363] 1534 pages in swap cache
[4101723.187111] Swap cache stats: add 1073080, delete 1071546, find
30858632/31034636
[4101723.194751] Free swap = 892276kB
[4101723.198232] Total swap = 979836kB
[4101723.213363] 65536 pages of RAM
[4101723.216583] 14709 free pages
[4101723.219633] 1651 reserved pages
[4101723.222942] 8190 slab pages
[4101723.225907] 22105 pages shared
[4101723.229129] 1534 pages swap cached
--
Cordialement,
Damien Martins
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