On 20.01.14 Mailingliste (m...@megamaddin.org) wrote: Moin,
> > wird hier nur der Cache gelöscht. Dies sollte aus meiner Sicht > > unnötig sein, da der Cache (auch der belegte) jederzeit frei > > gegeben wird. > > Naja, teilweise halt, dirty-pages z.B. nicht (steht ja auch in der > Doku). Ich bin mir sicher, es gibt auch noch einige SLAB-Caches > die nicht sofort reclaimable sind. > Der Kunde hat kein sync ausgeführt, also gabs scheinbar keine dirty pages, sonst hätte es nicht geholfen. > Da dies mit sehr hoher Wahrscheinlichkeit ein NUMA-System ist, was > sagt den z.B. "numactl -H” vor dem Start und auf was steht der > Kernel-Parameter vm.zone_reclaim_mode? Auf was ist > vm.overcommit_memory gestellt? > Ich vermute, Du beziehst Dich auf das hier http://www.poempelfox.de/blog/2010/03/ Ich häng Dir erstmal den Output von zoneinfo an. Eventuell sagt es ja was. Default: vm.overcommit_memory = 0 vm.overcommit_ratio = 50 vm.zone_reclaim_interval = 30 vm.zone_reclaim_mode = 0 H. -- "Life sucks, but it's better than the alternative." -- Peter da Silva http://www.hilmar-preusse.de.vu/
Output of command cat /proc/zoneinfo:
Node 0, zone DMA
pages free 2417
min 0
low 0
high 0
active 0
inactive 0
scanned 0 (a: 30 i: 30)
spanned 4096
present 2316
nr_anon_pages 0
nr_mapped 1
nr_file_pages 0
nr_slab 0
nr_page_table_pages 0
nr_dirty 0
nr_writeback 0
nr_unstable 0
nr_bounce 0
numa_hit 0
numa_miss 0
numa_foreign 0
numa_interleave 0
numa_local 0
numa_other 0
protection: (0, 2966, 48416, 48416)
pagesets
all_unreclaimable: 1
prev_priority: 12
start_pfn: 0
Node 0, zone DMA32
pages free 706102
min 304
low 380
high 456
active 1
inactive 0
scanned 0 (a: 0 i: 10)
spanned 1044480
present 759301
nr_anon_pages 1
nr_mapped 0
nr_file_pages 0
nr_slab 33
nr_page_table_pages 0
nr_dirty 0
nr_writeback 0
nr_unstable 0
nr_bounce 0
numa_hit 192039108
numa_miss 4402455
numa_foreign 0
numa_interleave 0
numa_local 191359364
numa_other 5082199
protection: (0, 0, 45450, 45450)
pagesets
cpu: 0 pcp: 0
count: 150
high: 186
batch: 31
cpu: 0 pcp: 1
count: 4
high: 62
batch: 15
vm stats threshold: 60
cpu: 1 pcp: 0
count: 181
high: 186
batch: 31
cpu: 1 pcp: 1
count: 6
high: 62
batch: 15
vm stats threshold: 60
cpu: 2 pcp: 0
count: 176
high: 186
batch: 31
cpu: 2 pcp: 1
count: 10
high: 62
batch: 15
vm stats threshold: 60
cpu: 3 pcp: 0
count: 175
high: 186
batch: 31
cpu: 3 pcp: 1
count: 54
high: 62
batch: 15
vm stats threshold: 60
cpu: 4 pcp: 0
count: 163
high: 186
batch: 31
cpu: 4 pcp: 1
count: 14
high: 62
batch: 15
vm stats threshold: 60
cpu: 5 pcp: 0
count: 135
high: 186
batch: 31
cpu: 5 pcp: 1
count: 11
high: 62
batch: 15
vm stats threshold: 60
cpu: 12 pcp: 0
count: 129
high: 186
batch: 31
cpu: 12 pcp: 1
count: 14
high: 62
batch: 15
vm stats threshold: 60
cpu: 13 pcp: 0
count: 26
high: 186
batch: 31
cpu: 13 pcp: 1
count: 12
high: 62
batch: 15
vm stats threshold: 60
cpu: 14 pcp: 0
count: 30
high: 186
batch: 31
cpu: 14 pcp: 1
count: 7
high: 62
batch: 15
vm stats threshold: 60
cpu: 15 pcp: 0
count: 7
high: 186
batch: 31
cpu: 15 pcp: 1
count: 56
high: 62
batch: 15
vm stats threshold: 60
cpu: 16 pcp: 0
count: 111
high: 186
batch: 31
cpu: 16 pcp: 1
count: 14
high: 62
batch: 15
vm stats threshold: 60
cpu: 17 pcp: 0
count: 0
high: 186
batch: 31
cpu: 17 pcp: 1
count: 1
high: 62
batch: 15
vm stats threshold: 60
all_unreclaimable: 0
prev_priority: 12
start_pfn: 4096
Node 0, zone Normal
pages free 1834784
min 4665
low 5831
high 6997
active 2442280
inactive 7149522
scanned 0 (a: 0 i: 0)
spanned 11796480
present 11635200
nr_anon_pages 364743
nr_mapped 9989
nr_file_pages 9226694
nr_slab 186323
nr_page_table_pages 1856
nr_dirty 1
nr_writeback 0
nr_unstable 0
nr_bounce 0
numa_hit 4224546332
numa_miss 85735451
numa_foreign 681764062
numa_interleave 4656983
numa_local 4219164918
numa_other 91116865
protection: (0, 0, 0, 0)
pagesets
cpu: 0 pcp: 0
count: 11
high: 186
batch: 31
cpu: 0 pcp: 1
count: 8
high: 62
batch: 15
vm stats threshold: 100
cpu: 1 pcp: 0
count: 5
high: 186
batch: 31
cpu: 1 pcp: 1
count: 12
high: 62
batch: 15
vm stats threshold: 100
cpu: 2 pcp: 0
count: 180
high: 186
batch: 31
cpu: 2 pcp: 1
count: 12
high: 62
batch: 15
vm stats threshold: 100
cpu: 3 pcp: 0
count: 24
high: 186
batch: 31
cpu: 3 pcp: 1
count: 3
high: 62
batch: 15
vm stats threshold: 100
cpu: 4 pcp: 0
count: 24
high: 186
batch: 31
cpu: 4 pcp: 1
count: 7
high: 62
batch: 15
vm stats threshold: 100
cpu: 5 pcp: 0
count: 126
high: 186
batch: 31
cpu: 5 pcp: 1
count: 3
high: 62
batch: 15
vm stats threshold: 100
cpu: 6 pcp: 0
count: 14
high: 186
batch: 31
cpu: 6 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 11 pcp: 0
count: 18
high: 186
batch: 31
cpu: 11 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 12 pcp: 0
count: 21
high: 186
batch: 31
cpu: 12 pcp: 1
count: 6
high: 62
batch: 15
vm stats threshold: 100
cpu: 13 pcp: 0
count: 89
high: 186
batch: 31
cpu: 13 pcp: 1
count: 9
high: 62
batch: 15
vm stats threshold: 100
cpu: 14 pcp: 0
count: 32
high: 186
batch: 31
cpu: 14 pcp: 1
count: 8
high: 62
batch: 15
vm stats threshold: 100
cpu: 15 pcp: 0
count: 20
high: 186
batch: 31
cpu: 15 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 16 pcp: 0
count: 2
high: 186
batch: 31
cpu: 16 pcp: 1
count: 14
high: 62
batch: 15
vm stats threshold: 100
cpu: 17 pcp: 0
count: 80
high: 186
batch: 31
cpu: 17 pcp: 1
count: 4
high: 62
batch: 15
vm stats threshold: 100
cpu: 19 pcp: 0
count: 33
high: 186
batch: 31
cpu: 19 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 23 pcp: 0
count: 137
high: 186
batch: 31
cpu: 23 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
all_unreclaimable: 0
prev_priority: 12
start_pfn: 1048576
Node 1, zone Normal
pages free 2453368
min 4976
low 6220
high 7464
active 2548830
inactive 6579747
scanned 0 (a: 0 i: 0)
spanned 12582911
present 12410880
nr_anon_pages 446081
nr_mapped 1604
nr_file_pages 8681453
nr_slab 822951
nr_page_table_pages 2305
nr_dirty 1498
nr_writeback 0
nr_unstable 0
nr_bounce 0
numa_hit 5078723086
numa_miss 681764062
numa_foreign 90137906
numa_interleave 4566028
numa_local 5074426357
numa_other 686060791
protection: (0, 0, 0, 0)
pagesets
cpu: 0 pcp: 0
count: 15
high: 186
batch: 31
cpu: 0 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 6 pcp: 0
count: 28
high: 186
batch: 31
cpu: 6 pcp: 1
count: 11
high: 62
batch: 15
vm stats threshold: 100
cpu: 7 pcp: 0
count: 16
high: 186
batch: 31
cpu: 7 pcp: 1
count: 6
high: 62
batch: 15
vm stats threshold: 100
cpu: 8 pcp: 0
count: 34
high: 186
batch: 31
cpu: 8 pcp: 1
count: 14
high: 62
batch: 15
vm stats threshold: 100
cpu: 9 pcp: 0
count: 22
high: 186
batch: 31
cpu: 9 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 10 pcp: 0
count: 24
high: 186
batch: 31
cpu: 10 pcp: 1
count: 14
high: 62
batch: 15
vm stats threshold: 100
cpu: 11 pcp: 0
count: 10
high: 186
batch: 31
cpu: 11 pcp: 1
count: 9
high: 62
batch: 15
vm stats threshold: 100
cpu: 12 pcp: 0
count: 147
high: 186
batch: 31
cpu: 12 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 13 pcp: 0
count: 156
high: 186
batch: 31
cpu: 13 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 14 pcp: 0
count: 167
high: 186
batch: 31
cpu: 14 pcp: 1
count: 0
high: 62
batch: 15
vm stats threshold: 100
cpu: 18 pcp: 0
count: 63
high: 186
batch: 31
cpu: 18 pcp: 1
count: 3
high: 62
batch: 15
vm stats threshold: 100
cpu: 19 pcp: 0
count: 60
high: 186
batch: 31
cpu: 19 pcp: 1
count: 4
high: 62
batch: 15
vm stats threshold: 100
cpu: 20 pcp: 0
count: 30
high: 186
batch: 31
cpu: 20 pcp: 1
count: 12
high: 62
batch: 15
vm stats threshold: 100
cpu: 21 pcp: 0
count: 124
high: 186
batch: 31
cpu: 21 pcp: 1
count: 10
high: 62
batch: 15
vm stats threshold: 100
cpu: 22 pcp: 0
count: 48
high: 186
batch: 31
cpu: 22 pcp: 1
count: 9
high: 62
batch: 15
vm stats threshold: 100
cpu: 23 pcp: 0
count: 10
high: 186
batch: 31
cpu: 23 pcp: 1
count: 10
high: 62
batch: 15
vm stats threshold: 100
all_unreclaimable: 0
prev_priority: 12
start_pfn: 12845056
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