我的 RHEL7 系统出现“页面分配失败”错误。这里是:
内核:[85531.010995] sh:页面分配失败:顺序:4,模式:0x2040d0 内核:[85531.011000] CPU:1 PID:20846 通信:sh 未污染 3.10.0-693.el7.AV1.x86_64 #1 内核:[85531.011002] 硬件名称:VMware, Inc. VMware Virtual Platform/440BX 桌面参考平台,BIOS 6.00 09/21/2015 内核:[85531.011003] 00000000002040d0 00000000d00413f4 ffff8800070ffa18 ffffffff816a3e1d 内核:[85531.011006] ffff8800070ffaa8 ffffffff81188d00 0000000000000000 ffff88023ffd8000 内核:[85531.011008] 0000000000000004 00000000002040d0 ffff8800070ffaa8 00000000d00413f4 内核:[85531.011010] 调用跟踪: 内核:[85531.011018] [] dump_stack+0x19/0x1b 内核:[85531.011023] [] warn_alloc_failed+0x110/0x180 内核:[85531.011026] [] __alloc_pages_slowpath+0x6b6/0x724 内核:[85531.011028] [] __alloc_pages_nodemask+0x405/0x420 内核:[85531.011031] [] alloc_pages_current+0x98/0x110 内核:[85531.011035] [] new_slab+0x2fc/0x310 内核:[85531.011037] [] ___slab_alloc+0x3ac/0x4f0 内核:[85531.011042] []?复制进程+0x18e/0x19a0 内核:[85531.011044] []?复制进程+0x18e/0x19a0 内核:[85531.011046] [] __slab_alloc+0x40/0x5c 内核:[85531.011049] [] kmem_cache_alloc_node+0x8b/0x200 内核:[85531.011051] [] copy_process+0x18e/0x19a0 内核:[85531.011053] [] do_fork+0x91/0x320 内核:[85531.011056] [] SyS_clone+0x16/0x20 内核:[85531.011059] [] stub_clone+0x69/0x90 内核:[85531.011061] []?system_call_fastpath+0x16/0x1b 内核:[85531.011062] 内存信息: 内核:[85531.011066] active_anon:1145227 inactive_anon:278512 isolated_anon:0 内核:[85531.011066] active_file:181319 inactive_file:185784 isolated_file:0 内核:[85531.011066] unevictable:2695 脏:4333 写回:0 不稳定:0 内核:[85531.011066]slab_reclaimable:45889slab_unreclaimable:54798 内核:[85531.011066] 映射:79471 shmem:52418 页表:11994 反弹:0 内核:[85531.011066] free:33850 free_pcp:0 free_cma:0 内核:[85531.011069] Node 0 DMA free:15868kB min:132kB low:164kB high:196kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15992kB托管:15908kB mlocked:0kB 脏:0kB 写回:0kB 映射:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:8kB kernel_stack:0kB pagetables:0kB 不稳定:0kB 反弹:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned: 0 all_unreclaimable?是的 内核:[85531.011073] lowmem_reserve[]:0 2809 7800 7800 kernel: [85531.011076] Node 0 DMA32 free:53892kB min:24292kB low:30364kB high:36436kB active_anon:1622080kB inactive_anon:516652kB active_file:203244kB inactive_file:212104kB unevictable:2312kB isolated(anon):0kB isolated(file):0kB present:3129280kB managed:2878656kB mlocked:2312kB dirty:6236kB writeback:0kB mapped:115972kB shmem:79808kB slab_reclaimable:77740kB slab_unreclaimable:90500kB kernel_stack:13680kB pagetables:17624kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned: 0 all_unreclaimable?不 内核:[85531.011080] lowmem_reserve[]:0 0 4990 4990 内核:[85531.011082] 节点 0 正常空闲:65640kB 最小值:43152kB 低:53940kB 高:64728kB active_anon:2958828kB inactive_anon:597396kB active_file:522032kB inactive_file:531032kB unvictable:8468kB 已隔离(kB 已隔离:531032kB managed:5110372kB mlocked:8464kB dirty:11096kB writeback:0kB mapped:201912kB shmem:129864kB slab_reclaimable:105816kB slab_unreclaimable:128684kB kernel_stack:19936kB pagetables:30352kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned: 0 all_unreclaimable?不 内核:[85531.011085] lowmem_reserve[]:0 0 0 0 内核:[85531.011087] 节点 0 DMA:1*4kB (U) 1*8kB (U) 1*16kB (U) 1*32kB (U) 1*64kB (U) 1*128kB (U) 1*256kB (U ) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15868kB 内核:[85531.011095] 节点 0 DMA32:2946*4kB (UEM) 1995*8kB (UEM) 1241*16kB (UEM) 186*32kB (UEM) 9*64kB (U) 0*128kB 0*256kB 0*512kB 0* 1024kB 0*2048kB 0*4096kB = 54128kB 内核:[85531.011102] 节点 0 正常:16005*4kB (UEM) 248*8kB (UEM) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 66004k 内核:[85531.011108] 节点 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 内核:[85531.011109] 428930 总页面缓存页面 内核:[85531.011110] 交换缓存中有 8261 个页面 内核:[85531.011111]交换缓存统计:添加51264,删除43003,查找2892763/2894481 内核:[85531.011112] 自由交换 = 5078128kB 内核:[85531.011113] 总交换 = 5242876kB 内核:[85531.011114] 2097038 页 RAM 内核:[85531.011114] 0 页 HighMem/MovableOnly 内核:[85531.011115] 95804 页保留 内核:[85531.011116] SLUB:无法在节点 -1 上分配内存(gfp=0xd0) 内核:[85531.011118] 缓存:task_struct,对象大小:45024,缓冲区大小:45024,默认顺序:4,最小顺序:4 内核:[85531.011119] 节点 0:slabs:2114,objs:2114,免费:0
问题是关于其消息的最新部分:
内核:[85531.011116] SLUB:无法在节点 -1 上分配内存(gfp=0xd0) 内核:[85531.011118] 缓存:task_struct,对象大小:45024,缓冲区大小:45024,默认顺序:4,最小顺序:4 内核:[85531.011119] 节点 0:slabs:2114,objs:2114,免费:0
-1
当 Zone from 分配失败时,为什么节点索引有Node 0
?这有点混乱。。
内核:[85531.011087] 节点 0 DMA:1*4kB (U) 1*8kB (U) 1*16kB (U) 1*32kB (U) 1*64kB (U) 1*128kB (U) 1*256kB (U ) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15868kB 内核:[85531.011095] 节点 0 DMA32:2946*4kB (UEM) 1995*8kB (UEM) 1241*16kB (UEM) 186*32kB (UEM) 9*64kB (U) 0*128kB 0*256kB 0*512kB 0* 1024kB 0*2048kB 0*4096kB = 54128kB 内核:[85531.011102] 节点 0 正常:16005*4kB (UEM) 248*8kB (UEM) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 66004k
节点 -1 表示“任何节点”。您可能只有一个节点。Red Hat 的内核经过配置,可以通过模拟只有一个节点的 NUMA 机器在单节点机器上运行。检查您的引导日志 (/var/log/dmesg)。我有: