On 07/18/2012 01:36 PM, Steven J. Yellin wrote: > The fact that both free and total swap are said to be "0kB" seems so > unreasonable that it may mean I just don't understand the output. Another > possibility is that there's a hardware error on the drive containing the swap > data, in which case perhaps the computer would stay up after the error if > there were also a swap area file on another drive, and wouldn't crash at all > if only swap area on another drive were used. It seems like everything about the memory config goes screwy. Here's a info dump from normal operation: SysRq : Show Memory Mem-Info: Node 0 DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 CPU 1: hi: 0, btch: 1 usd: 0 CPU 2: hi: 0, btch: 1 usd: 0 CPU 3: hi: 0, btch: 1 usd: 0 CPU 4: hi: 0, btch: 1 usd: 0 CPU 5: hi: 0, btch: 1 usd: 0 CPU 6: hi: 0, btch: 1 usd: 0 CPU 7: hi: 0, btch: 1 usd: 0 CPU 8: hi: 0, btch: 1 usd: 0 CPU 9: hi: 0, btch: 1 usd: 0 CPU 10: hi: 0, btch: 1 usd: 0 CPU 11: hi: 0, btch: 1 usd: 0 CPU 12: hi: 0, btch: 1 usd: 0 CPU 13: hi: 0, btch: 1 usd: 0 CPU 14: hi: 0, btch: 1 usd: 0 CPU 15: hi: 0, btch: 1 usd: 0 Node 0 DMA32 per-cpu: CPU 0: hi: 186, btch: 31 usd: 180 CPU 1: hi: 186, btch: 31 usd: 158 CPU 2: hi: 186, btch: 31 usd: 0 CPU 3: hi: 186, btch: 31 usd: 0 CPU 4: hi: 186, btch: 31 usd: 0 CPU 5: hi: 186, btch: 31 usd: 0 CPU 6: hi: 186, btch: 31 usd: 0 CPU 7: hi: 186, btch: 31 usd: 0 CPU 8: hi: 186, btch: 31 usd: 0 CPU 9: hi: 186, btch: 31 usd: 19 CPU 10: hi: 186, btch: 31 usd: 30 CPU 11: hi: 186, btch: 31 usd: 0 CPU 12: hi: 186, btch: 31 usd: 0 CPU 13: hi: 186, btch: 31 usd: 0 CPU 14: hi: 186, btch: 31 usd: 0 CPU 15: hi: 186, btch: 31 usd: 0 Node 0 Normal per-cpu: CPU 0: hi: 186, btch: 31 usd: 144 CPU 1: hi: 186, btch: 31 usd: 124 CPU 2: hi: 186, btch: 31 usd: 182 CPU 3: hi: 186, btch: 31 usd: 162 CPU 4: hi: 186, btch: 31 usd: 182 CPU 5: hi: 186, btch: 31 usd: 162 CPU 6: hi: 186, btch: 31 usd: 0 CPU 7: hi: 186, btch: 31 usd: 0 CPU 8: hi: 186, btch: 31 usd: 138 CPU 9: hi: 186, btch: 31 usd: 119 CPU 10: hi: 186, btch: 31 usd: 88 CPU 11: hi: 186, btch: 31 usd: 75 CPU 12: hi: 186, btch: 31 usd: 0 CPU 13: hi: 186, btch: 31 usd: 183 CPU 14: hi: 186, btch: 31 usd: 179 CPU 15: hi: 186, btch: 31 usd: 159 Node 1 Normal per-cpu: CPU 0: hi: 186, btch: 31 usd: 184 CPU 1: hi: 186, btch: 31 usd: 168 CPU 2: hi: 186, btch: 31 usd: 164 CPU 3: hi: 186, btch: 31 usd: 0 CPU 4: hi: 186, btch: 31 usd: 41 CPU 5: hi: 186, btch: 31 usd: 172 CPU 6: hi: 186, btch: 31 usd: 126 CPU 7: hi: 186, btch: 31 usd: 145 CPU 8: hi: 186, btch: 31 usd: 63 CPU 9: hi: 186, btch: 31 usd: 158 CPU 10: hi: 186, btch: 31 usd: 162 CPU 11: hi: 186, btch: 31 usd: 165 CPU 12: hi: 186, btch: 31 usd: 48 CPU 13: hi: 186, btch: 31 usd: 64 CPU 14: hi: 186, btch: 31 usd: 66 CPU 15: hi: 186, btch: 31 usd: 165 active_anon:1356095 inactive_anon:839 isolated_anon:0 active_file:93487 inactive_file:384620 isolated_file:0 unevictable:0 dirty:65 writeback:0 unstable:0 free:10288450 slab_reclaimable:40068 slab_unreclaimable:34613 mapped:9236 shmem:474 pagetables:6530 bounce:0 Node 0 DMA free:15396kB min:36kB low:44kB high:52kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:14984kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 2991 24201 24201 Node 0 DMA32 free:2563944kB min:8092kB low:10112kB high:12136kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3063392kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 21210 21210 Node 0 Normal free:16895636kB min:57372kB low:71712kB high:86056kB active_anon:2986668kB inactive_anon:92kB active_file:278460kB inactive_file:1316128kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:21719040kB mlocked:0kB dirty:120kB writeback:0kB mapped:18948kB shmem:360kB slab_reclaimable:123620kB slab_unreclaimable:95556kB kernel_stack:7024kB pagetables:12872kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 Node 1 Normal free:21678824kB min:65568kB low:81960kB high:98352kB active_anon:2437712kB inactive_anon:3264kB active_file:95488kB inactive_file:222352kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:24821760kB mlocked:0kB dirty:140kB writeback:0kB mapped:17996kB shmem:1536kB slab_reclaimable:36652kB slab_unreclaimable:42896kB kernel_stack:696kB pagetables:13248kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB 2*8kB 1*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15396kB Node 0 DMA32: 6*4kB 12*8kB 3*16kB 6*32kB 8*64kB 16*128kB 6*256kB 7*512kB 8*1024kB 6*2048kB 619*4096kB = 2563944kB Node 0 Normal: 1832*4kB 1354*8kB 846*16kB 583*32kB 272*64kB 65*128kB 70*256kB 53*512kB 37*1024kB 2*2048kB 4085*4096kB = 16895280kB Node 1 Normal: 509*4kB 2146*8kB 1166*16kB 831*32kB 346*64kB 197*128kB 200*256kB 202*512kB 192*1024kB 131*2048kB 5114*4096kB = 21678276kB 478555 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 8388600kB Total swap = 8388600kB 12582896 pages RAM 227482 pages reserved 450152 pages shared 1712399 pages non-shared and here's the initial oom message again: Mem-Info: Node 0 DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 Node 0 DMA32 per-cpu: CPU 0: hi: 42, btch: 7 usd: 23 active_anon:49 inactive_anon:97 isolated_anon:0 active_file:0 inactive_file:0 isolated_file:0 unevictable:3846 dirty:0 writeback:0 unstable:0 free:412 slab_reclaimable:1194 slab_unreclaimable:5681 mapped:356 shmem:0 pagetables:31 bounce:0 Node 0 DMA free:224kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:328kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes lowmem_reserve[]: 0 125 125 125 Node 0 DMA32 free:1424kB min:1428kB low:1784kB high:2140kB active_anon:196kB inactive_anon:388kB active_file:0kB inactive_file:0kB unevictable:15384kB isolated(anon):0kB isolated(file):0kB present:128256kB mlocked:0kB dirty:0kB writeback:0kB mapped:1424kB shmem:0kB slab_reclaimable:4776kB slab_unreclaimable:22724kB kernel_stack:600kB pagetables:124kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 0*4kB 2*8kB 1*16kB 2*32kB 2*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 224kB Node 0 DMA32: 0*4kB 2*8kB 2*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 1424kB45035 3846 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 45035 pages RAM 16585 pages reserved 359 pages shared 23771 pages non-shared Only 1 cpu listed, memory numbers are incredibly small (180MB of RAM!?), no Normal nodes listed, etc. -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA, Boulder Office FAX: 303-415-9702 3380 Mitchell Lane [log in to unmask] Boulder, CO 80301 http://www.nwra.com