内核报错，高手请看

Feb  7 04:01:24 localhost kernel: kswapd0: page allocation failure. order:0, mode:0x20
Feb  7 04:01:24 localhost kernel: Pid: 321, comm: kswapd0 Not tainted 2.6.24 #9
Feb  7 04:01:24 localhost kernel:
Feb  7 04:01:24 localhost kernel: Call Trace:
Feb  7 04:01:24 localhost kernel:  <IRQ>  [<ffffffff80272711>] __alloc_pages+0x2e2/0x2fb
Feb  7 04:01:24 localhost kernel:  [<ffffffff8028eade>] kmem_getpages+0x95/0x156
Feb  7 04:01:24 localhost kernel:  [<ffffffff8028f04d>] fallback_alloc+0x101/0x178
Feb  7 04:01:24 localhost kernel:  [<ffffffff8028ecd3>] kmem_cache_alloc_node+0x90/0xc1
Feb  7 04:01:24 localhost kernel:  [<ffffffff803dc175>] __alloc_skb+0x64/0x12e
Feb  7 04:01:24 localhost kernel:  [<ffffffff803dcdc8>] __netdev_alloc_skb+0x29/0x43
Feb  7 04:01:24 localhost kernel:  [<ffffffff880ebe0b>] :e1000e:e1000_alloc_rx_buffers+0x1eb/0x270
Feb  7 04:01:24 localhost kernel:  [<ffffffff880ec333>] :e1000e:e1000_clean_rx_irq+0x263/0x370
Feb  7 04:01:24 localhost kernel:  [<ffffffff880e9c1d>] :e1000e:e1000_poll+0x38d/0x710
Feb  7 04:01:24 localhost kernel:  [<ffffffff8023e824>] irq_exit+0xe/0x42
Feb  7 04:01:24 localhost kernel:  [<ffffffff8020e7ac>] do_IRQ+0x13d/0x161
Feb  7 04:01:24 localhost kernel:  [<ffffffff803e3016>] net_rx_action+0xa5/0x1e5
Feb  7 04:01:24 localhost kernel:  [<ffffffff8023e8f5>] __do_softirq+0x49/0xb8
Feb  7 04:01:24 localhost kernel:  [<ffffffff8020d09c>] call_softirq+0x1c/0x28
Feb  7 04:01:24 localhost kernel:  <EOI>  [<ffffffff8020e61e>] do_softirq+0x2c/0x7d
Feb  7 04:01:24 localhost kernel:  [<ffffffff8023eb87>] local_bh_enable_ip+0x36/0x5b
Feb  7 04:01:24 localhost kernel:  [<ffffffff8826b044>] :scst:sgv_pool_cached_shrinker+0x8c/0x97
Feb  7 04:01:24 localhost kernel:  [<ffffffff80276a9f>] shrink_slab+0x60/0x186
Feb  7 04:01:24 localhost kernel:  [<ffffffff80276f78>] kswapd+0x34b/0x4d1
Feb  7 04:01:24 localhost kernel:  [<ffffffff80445daf>] thread_return+0x65/0x8b
Feb  7 04:01:24 localhost kernel:  [<ffffffff8024c7df>] autoremove_wake_function+0x0/0x2e
Feb  7 04:01:24 localhost kernel:  [<ffffffff80276c2d>] kswapd+0x0/0x4d1
Feb  7 04:01:24 localhost kernel:  [<ffffffff8024c6ad>] kthread+0x47/0x76
Feb  7 04:01:24 localhost kernel:  [<ffffffff8020cd28>] child_rip+0xa/0x12
Feb  7 04:01:24 localhost kernel:  [<ffffffff8024c666>] kthread+0x0/0x76
Feb  7 04:01:24 localhost kernel:  [<ffffffff8020cd1e>] child_rip+0x0/0x12
Feb  7 04:01:24 localhost kernel:
Feb  7 04:01:24 localhost kernel: Mem-info:
Feb  7 04:01:24 localhost kernel: Node 0 DMA per-cpu:
Feb  7 04:01:24 localhost kernel: CPU    0: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Feb  7 04:01:24 localhost kernel: CPU    1: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Feb  7 04:01:24 localhost kernel: CPU    2: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Feb  7 04:01:24 localhost kernel: CPU    3: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Feb  7 04:01:24 localhost kernel: Node 0 DMA32 per-cpu:
Feb  7 04:01:24 localhost kernel: CPU    0: Hot: hi:  186, btch:  31 usd: 174   Cold: hi:   62, btch:  15 usd:  56
Feb  7 04:01:24 localhost kernel: CPU    1: Hot: hi:  186, btch:  31 usd: 149   Cold: hi:   62, btch:  15 usd:  51
Feb  7 04:01:24 localhost kernel: CPU    2: Hot: hi:  186, btch:  31 usd: 146   Cold: hi:   62, btch:  15 usd:  47
Feb  7 04:01:24 localhost kernel: CPU    3: Hot: hi:  186, btch:  31 usd: 156   Cold: hi:   62, btch:  15 usd:  55
Feb  7 04:01:24 localhost kernel: Node 0 Normal per-cpu:
Feb  7 04:01:24 localhost kernel: CPU    0: Hot: hi:  186, btch:  31 usd: 168   Cold: hi:   62, btch:  15 usd:  49
Feb  7 04:01:24 localhost kernel: CPU    1: Hot: hi:  186, btch:  31 usd:  61   Cold: hi:   62, btch:  15 usd:  59
Feb  7 04:01:24 localhost kernel: CPU    2: Hot: hi:  186, btch:  31 usd:  85   Cold: hi:   62, btch:  15 usd:  48
Feb  7 04:01:24 localhost kernel: CPU    3: Hot: hi:  186, btch:  31 usd: 159   Cold: hi:   62, btch:  15 usd:  51
Feb  7 04:01:24 localhost kernel: Active:217909 inactive:751940 dirty:5292 writeback:1 unstable:0
Feb  7 04:01:24 localhost kernel:  free:4628 slab:26823 mapped:10007 pagetables:1493 bounce:0
Feb  7 04:01:24 localhost kernel: Node 0 DMA free:11524kB min:20kB low:24kB high:28kB active:0kB inactive:0kB present:11072kB pages_scanned:0 all_unreclaimable? yes
Feb  7 04:01:24 localhost kernel: lowmem_reserve[]: 0 2983 3991 3991
Feb  7 04:01:24 localhost kernel: Node 0 DMA32 free:6228kB min:6032kB low:7540kB high:9048kB active:410688kB inactive:2483408kB present:3055360kB pages_scanned:0 all_unreclaimable? no
Feb  7 04:01:24 localhost kernel: lowmem_reserve[]: 0 0 1008 1008
Feb  7 04:01:24 localhost kernel: Node 0 Normal free:760kB min:2036kB low:2544kB high:3052kB active:460948kB inactive:524352kB present:1032192kB pages_scanned:0 all_unreclaimable? no
Feb  7 04:01:24 localhost kernel: lowmem_reserve[]: 0 0 0 0
Feb  7 04:01:24 localhost kernel: Node 0 DMA: 5*4kB 6*8kB 4*16kB 6*32kB 5*64kB 3*128kB 1*256kB 2*512kB 1*1024kB 0*2048kB 2*4096kB = 11524kB
Feb  7 04:01:24 localhost kernel: Node 0 DMA32: 0*4kB 1*8kB 0*16kB 1*32kB 0*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 0*2048kB 1*4096kB = 6056kB
Feb  7 04:01:24 localhost kernel: Node 0 Normal: 75*4kB 1*8kB 1*16kB 1*32kB 2*64kB 1*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 612kB
Feb  7 04:01:24 localhost kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0
Feb  7 04:01:24 localhost kernel: Free swap  = 0kB
Feb  7 04:01:24 localhost kernel: Total swap = 0kB
Feb  7 04:01:24 localhost kernel: Free swap:            0kB
Feb  7 04:01:24 localhost kernel: 1048576 pages of RAM
Feb  7 04:01:24 localhost kernel: 36588 reserved pages
Feb  7 04:01:24 localhost kernel: 666339 pages shared
Feb  7 04:01:24 localhost kernel: 0 pages swap cached
Feb  7 04:04:50 localhost kernel: kswapd0: page allocation failure. order:0, mode:0x20
Feb  7 04:04:50 localhost kernel: Pid: 321, comm: kswapd0 Not tainted 2.6.24 #9
Feb  7 04:04:50 localhost kernel:
Feb  7 04:04:50 localhost kernel: Call Trace:
Feb  7 04:04:50 localhost kernel:  <IRQ>  [<ffffffff80272711>] __alloc_pages+0x2e2/0x2fb
Feb  7 04:04:50 localhost kernel:  [<ffffffff8028eade>] kmem_getpages+0x95/0x156
Feb  7 04:04:50 localhost kernel:  [<ffffffff8028f04d>] fallback_alloc+0x101/0x178
Feb  7 04:04:50 localhost kernel:  [<ffffffff8028ecd3>] kmem_cache_alloc_node+0x90/0xc1
Feb  7 04:04:50 localhost kernel:  [<ffffffff803dc175>] __alloc_skb+0x64/0x12e
Feb  7 04:04:50 localhost kernel:  [<ffffffff803dcdc8>] __netdev_alloc_skb+0x29/0x43
Feb  7 04:04:50 localhost kernel:  [<ffffffff880ebe0b>] :e1000e:e1000_alloc_rx_buffers+0x1eb/0x270
Feb  7 04:04:50 localhost kernel:  [<ffffffff880ec333>] :e1000e:e1000_clean_rx_irq+0x263/0x370
Feb  7 04:04:50 localhost kernel:  [<ffffffff880e9c1d>] :e1000e:e1000_poll+0x38d/0x710
Feb  7 04:04:50 localhost kernel:  [<ffffffff80447746>] _spin_unlock_irq+0x15/0x30
Feb  7 04:04:50 localhost kernel:  [<ffffffff80447746>] _spin_unlock_irq+0x15/0x30
Feb  7 04:04:50 localhost kernel:  [<ffffffff803e3016>] net_rx_action+0xa5/0x1e5
Feb  7 04:04:50 localhost kernel:  [<ffffffff8023e8f5>] __do_softirq+0x49/0xb8
Feb  7 04:04:50 localhost kernel:  [<ffffffff8020d09c>] call_softirq+0x1c/0x28
Feb  7 04:04:50 localhost kernel:  <EOI>  [<ffffffff8020e61e>] do_softirq+0x2c/0x7d
Feb  7 04:04:50 localhost kernel:  [<ffffffff8023eb87>] local_bh_enable_ip+0x36/0x5b
Feb  7 04:04:50 localhost kernel:  [<ffffffff8826b044>] :scst:sgv_pool_cached_shrinker+0x8c/0x97
Feb  7 04:04:50 localhost kernel:  [<ffffffff80276a9f>] shrink_slab+0x60/0x186
Feb  7 04:04:50 localhost kernel:  [<ffffffff80276f78>] kswapd+0x34b/0x4d1
Feb  7 04:04:50 localhost kernel:  [<ffffffff80445daf>] thread_return+0x65/0x8b
Feb  7 04:04:50 localhost kernel:  [<ffffffff8024c7df>] autoremove_wake_function+0x0/0x2e
Feb  7 04:04:50 localhost kernel:  [<ffffffff80276c2d>] kswapd+0x0/0x4d1
Feb  7 04:04:50 localhost kernel:  [<ffffffff8024c6ad>] kthread+0x47/0x76
Feb  7 04:04:50 localhost kernel:  [<ffffffff8020cd28>] child_rip+0xa/0x12
Feb  7 04:04:50 localhost kernel:  [<ffffffff8024c666>] kthread+0x0/0x76
Feb  7 04:04:50 localhost kernel:  [<ffffffff8020cd1e>] child_rip+0x0/0x12
Feb  7 04:04:50 localhost kernel:
Feb  7 04:04:50 localhost kernel: Mem-info:
Feb  7 04:04:50 localhost kernel: Node 0 DMA per-cpu:
Feb  7 04:04:50 localhost kernel: CPU    0: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Feb  7 04:04:50 localhost kernel: CPU    1: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Feb  7 04:04:50 localhost kernel: CPU    2: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Feb  7 04:04:50 localhost kernel: CPU    3: Hot: hi:    0, btch:   1 usd:   0   Cold: hi:    0, btch:   1 usd:   0
Feb  7 04:04:50 localhost kernel: Node 0 DMA32 per-cpu:
Feb  7 04:04:50 localhost kernel: CPU    0: Hot: hi:  186, btch:  31 usd: 158   Cold: hi:   62, btch:  15 usd:  58
Feb  7 04:04:50 localhost kernel: CPU    1: Hot: hi:  186, btch:  31 usd: 206   Cold: hi:   62, btch:  15 usd:  61
Feb  7 04:04:50 localhost kernel: CPU    2: Hot: hi:  186, btch:  31 usd: 174   Cold: hi:   62, btch:  15 usd:  61
Feb  7 04:04:50 localhost kernel: CPU    3: Hot: hi:  186, btch:  31 usd: 118   Cold: hi:   62, btch:  15 usd:  53
Feb  7 04:04:50 localhost kernel: Node 0 Normal per-cpu:
Feb  7 04:04:50 localhost kernel: CPU    0: Hot: hi:  186, btch:  31 usd: 155   Cold: hi:   62, btch:  15 usd:  56
Feb  7 04:04:50 localhost kernel: CPU    1: Hot: hi:  186, btch:  31 usd:  68   Cold: hi:   62, btch:  15 usd:  61
Feb  7 04:04:50 localhost kernel: CPU    2: Hot: hi:  186, btch:  31 usd: 162   Cold: hi:   62, btch:  15 usd:  48
Feb  7 04:04:50 localhost kernel: CPU    3: Hot: hi:  186, btch:  31 usd: 139   Cold: hi:   62, btch:  15 usd:  50
Feb  7 04:04:50 localhost kernel: Active:216950 inactive:753014 dirty:19403 writeback:0 unstable:0
Feb  7 04:04:50 localhost kernel:  free:4632 slab:26451 mapped:10007 pagetables:1493 bounce:0
Feb  7 04:04:50 localhost kernel: Node 0 DMA free:11524kB min:20kB low:24kB high:28kB active:0kB inactive:0kB present:11072kB pages_scanned:0 all_unreclaimable? yes
Feb  7 04:04:50 localhost kernel: lowmem_reserve[]: 0 2983 3991 3991
Feb  7 04:04:50 localhost kernel: Node 0 DMA32 free:6284kB min:6032kB low:7540kB high:9048kB active:406992kB inactive:2487328kB present:3055360kB pages_scanned:0 all_unreclaimable? no
Feb  7 04:04:50 localhost kernel: lowmem_reserve[]: 0 0 1008 1008
Feb  7 04:04:50 localhost kernel: Node 0 Normal free:720kB min:2036kB low:2544kB high:3052kB active:460808kB inactive:524728kB present:1032192kB pages_scanned:0 all_unreclaimable? no
Feb  7 04:04:50 localhost kernel: lowmem_reserve[]: 0 0 0 0
Feb  7 04:04:50 localhost kernel: Node 0 DMA: 5*4kB 6*8kB 4*16kB 6*32kB 5*64kB 3*128kB 1*256kB 2*512kB 1*1024kB 0*2048kB 2*4096kB = 11524kB
Feb  7 04:04:50 localhost kernel: Node 0 DMA32: 30*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB 1*4096kB = 6264kB
Feb  7 04:04:50 localhost kernel: Node 0 Normal: 108*4kB 1*8kB 1*16kB 1*32kB 2*64kB 1*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 744kB
Feb  7 04:04:50 localhost kernel: Swap cache: add 0, delete 0, find 0/0, race 0+0
Feb  7 04:04:50 localhost kernel: Free swap  = 0kB
Feb  7 04:04:50 localhost kernel: Total swap = 0kB
Feb  7 04:04:50 localhost kernel: Free swap:            0kB
Feb  7 04:04:50 localhost kernel: 1048576 pages of RAM
Feb  7 04:04:50 localhost kernel: 36588 reserved pages
Feb  7 04:04:50 localhost kernel: 669074 pages shared
Feb  7 04:04:50 localhost kernel: 0 pages swap cached
Feb  7 04:11:29 localhost kernel: kswapd0: page allocation failure. order:0, mode:0x20
Feb  7 04:11:29 localhost kernel: Pid: 321, comm: kswapd0 Not tainted 2.6.24 #9

貌似是内存不够了

从那个地方可以看出内存不够？