Hello,

Just notice these errors in kern.log. What does this means?

Thanks

Apr 16 12:06:46 sirius kernel: nginx: page allocation failure: order:4, mode:0x20
Apr 16 12:06:46 sirius kernel: Pid: 4368, comm: nginx Not tainted 3.0.18-linode43 #1
Apr 16 12:06:46 sirius kernel: Call Trace:
Apr 16 12:06:46 sirius kernel: [<c01962b8>] ? warn_alloc_failed+0x98/0x100
Apr 16 12:06:46 sirius kernel: [<c0196b40>] ? __alloc_pages_nodemask+0x410/0x680
Apr 16 12:06:46 sirius kernel: [<c06d5e21>] ? _raw_spin_unlock_irqrestore+0x11/0x20
Apr 16 12:06:46 sirius kernel: [<c0599702>] ? __nf_ct_refresh_acct+0xc2/0xd0
Apr 16 12:06:46 sirius kernel: [<c01be243>] ? T.837+0xb3/0x2e0
Apr 16 12:06:46 sirius kernel: [<c01be6b6>] ? cache_alloc_refill+0x246/0x290
Apr 16 12:06:46 sirius kernel: [<c01be7bd>] ? __kmalloc+0xbd/0xd0
Apr 16 12:06:46 sirius kernel: [<c055027e>] ? pskb_expand_head+0x12e/0x210
Apr 16 12:06:46 sirius kernel: [<c01bd921>] ? kmem_cache_free+0x41/0x60
Apr 16 12:06:46 sirius kernel: [<c067b32d>] ? packet_rcv_spkt+0xfd/0x140
Apr 16 12:06:46 sirius kernel: [<c05507dd>] ? __pskb_pull_tail+0x4d/0x2b0
Apr 16 12:06:46 sirius kernel: [<c061d9c3>] ? ipv4_confirm+0xf3/0x1b0
Apr 16 12:06:46 sirius kernel: [<c05591bd>] ? dev_hard_start_xmit+0x1dd/0x3e0
Apr 16 12:06:46 sirius kernel: [<c05dde70>] ? ip_finish_output2+0x260/0x260
Apr 16 12:06:46 sirius kernel: [<c05dde70>] ? ip_finish_output2+0x260/0x260
Apr 16 12:06:46 sirius kernel: [<c056d582>] ? sch_direct_xmit+0xb2/0x170
Apr 16 12:06:46 sirius kernel: [<c05594b9>] ? dev_queue_xmit+0xf9/0x320
Apr 16 12:06:46 sirius kernel: [<c05ddfab>] ? ip_finish_output+0x13b/0x300
Apr 16 12:06:46 sirius kernel: [<c05de21a>] ? ip_output+0xaa/0xe0
Apr 16 12:06:46 sirius kernel: [<c05dd3b8>] ? ip_local_out+0x18/0x20
Apr 16 12:06:46 sirius kernel: [<c05f0d85>] ? tcp_transmit_skb+0x385/0x670
Apr 16 12:06:46 sirius kernel: [<c05f37c5>] ? tcp_write_xmit+0x1e5/0x4f0
Apr 16 12:06:46 sirius kernel: [<c0106404>] ? check_events+0x8/0xc
Apr 16 12:06:46 sirius kernel: [<c05f3afd>] ? tcp_push_one+0x2d/0x40
Apr 16 12:06:46 sirius kernel: [<c05e6b20>] ? tcp_sendmsg+0xa40/0xb50
Apr 16 12:06:46 sirius kernel: [<c054f4b8>] ? skb_dequeue+0x48/0x70
Apr 16 12:06:46 sirius kernel: [<c063c1c5>] ? unix_stream_recvmsg+0x4c5/0x5c0
Apr 16 12:06:46 sirius kernel: [<c0604bc7>] ? inet_sendmsg+0x47/0xb0
Apr 16 12:06:46 sirius kernel: [<c0547cfe>] ? sock_aio_write+0x11e/0x170
Apr 16 12:06:46 sirius kernel: [<c0547be0>] ? sock_aio_dtor+0x10/0x10
Apr 16 12:06:46 sirius kernel: [<c01c6cd6>] ? do_sync_readv_writev+0xb6/0xf0
Apr 16 12:06:46 sirius kernel: [<c01c6f56>] ? rw_verify_area+0x66/0x120
Apr 16 12:06:46 sirius kernel: [<c01c745a>] ? do_readv_writev+0xaa/0x1a0
Apr 16 12:06:46 sirius kernel: [<c0547be0>] ? sock_aio_dtor+0x10/0x10
Apr 16 12:06:46 sirius kernel: [<c0159b03>] ? getnstimeofday+0x43/0x100
Apr 16 12:06:46 sirius kernel: [<c01c758e>] ? vfs_writev+0x3e/0x60
Apr 16 12:06:46 sirius kernel: [<c01c76b1>] ? sys_writev+0x41/0xa0
Apr 16 12:06:46 sirius kernel: [<c06d6101>] ? syscall_call+0x7/0xb
Apr 16 12:06:46 sirius kernel: [<c06d0000>] ? init_intel+0xa6/0x294
Apr 16 12:06:46 sirius kernel: Mem-Info:
Apr 16 12:06:46 sirius kernel: DMA per-cpu:
Apr 16 12:06:46 sirius kernel: CPU    0: hi:    0, btch:   1 usd:   0
Apr 16 12:06:46 sirius kernel: CPU    1: hi:    0, btch:   1 usd:   0
Apr 16 12:06:46 sirius kernel: CPU    2: hi:    0, btch:   1 usd:   0
Apr 16 12:06:46 sirius kernel: CPU    3: hi:    0, btch:   1 usd:   0
Apr 16 12:06:46 sirius kernel: Normal per-cpu:
Apr 16 12:06:46 sirius kernel: CPU    0: hi:  186, btch:  31 usd: 111
Apr 16 12:06:46 sirius kernel: CPU    1: hi:  186, btch:  31 usd:  67
Apr 16 12:06:46 sirius kernel: CPU    2: hi:  186, btch:  31 usd: 182
Apr 16 12:06:46 sirius kernel: CPU    3: hi:  186, btch:  31 usd:  56
Apr 16 12:06:46 sirius kernel: active_anon:10700 inactive_anon:29098 isolated_anon:0
Apr 16 12:06:46 sirius kernel: active_file:38076 inactive_file:35029 isolated_file:0
Apr 16 12:06:46 sirius kernel: unevictable:0 dirty:482 writeback:0 unstable:0
Apr 16 12:06:46 sirius kernel: free:2977 slab_reclaimable:4893 slab_unreclaimable:2389
Apr 16 12:06:46 sirius kernel: mapped:8468 shmem:2455 pagetables:428 bounce:0
Apr 16 12:06:46 sirius kernel: DMA free:4728kB min:84kB low:104kB high:124kB active_anon:8kB inactive_anon:8kB active_file:404kB inactive_file:880kB unevictable:0kB isolated(an$
Apr 16 12:06:46 sirius kernel: lowmem_reserve[]: 0 500 500 500
Apr 16 12:06:46 sirius kernel: Normal free:7180kB min:2816kB low:3520kB high:4224kB active_anon:42792kB inactive_anon:116384kB active_file:151900kB inactive_file:139236kB unevi$
Apr 16 12:06:46 sirius kernel: lowmem_reserve[]: 0 0 0 0
Apr 16 12:06:46 sirius kernel: DMA: 227*4kB 166*8kB 86*16kB 31*32kB 2*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4732kB
Apr 16 12:06:46 sirius kernel: Normal: 1087*4kB 352*8kB 1*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 7180kB
Apr 16 12:06:46 sirius kernel: 79439 total pagecache pages
Apr 16 12:06:46 sirius kernel: 3875 pages in swap cache
Apr 16 12:06:46 sirius kernel: Swap cache stats: add 1933400, delete 1929525, find 34239926/34406559
Apr 16 12:06:46 sirius kernel: Free swap  = 240336kB
Apr 16 12:06:46 sirius kernel: Total swap = 262140kB
Apr 16 12:06:46 sirius kernel: 133104 pages RAM
Apr 16 12:06:46 sirius kernel: 0 pages HighMem
Apr 16 12:06:46 sirius kernel: 6385 pages reserved
Apr 16 12:06:46 sirius kernel: 37715 pages shared
Apr 16 12:06:46 sirius kernel: 99726 pages non-shared

See here viewtopic.php?t=7805

_________________
Paid support
How to ask for help
1. Give details of your problem
2. Post any errors
3. Post relevant logs.
4. Don't hide details i.e. your domain, it just makes things harder
5. Be polite or you'll be eaten by a grue

Thanks ... i'll try those values.