是否有可能...
我使用 macvlan 和 ipvlan 驱动程序取得了部分成功——我能够运行一个容器，给它一个 IP 地址，然后这个 IP 可以从网络上的所有其他主机访问。
但是，我无法访问运行容器的主机或从主机访问。
我什至尝试使用最新版本的podman、netavark、cni-plugins从源代码构建，这使 ipvlan 驱动程序具有相同的结果。
我更喜欢指向描述如何完成此操作的指南的指针，但也欢迎提供故障排除建议。
Oracle 官方文档说，对于 RAM 超过 16GiB 的机器，我们需要分配 16GiB 的交换空间。
我们的服务器是 RHEL 7，拥有 256GiB 的 RAM。
DBA 不想看到系统交换，因此他们希望我们非常积极地监控 16GiB 的交换。
我建议我们将 RAM 翻倍至 512GiB（费用已批准），并禁用交换。然而，这违背了 Oracle 建议的 16GiB 交换空间，即使我们将 RAM 翻倍。
老实说，我不明白拥有 3% 的交换空间有什么意义，或者为什么如果我添加的 RAM 比交换空间多，我们必须保留交换空间。
那么，有什么好的论据可以用来证明在没有交换的情况下运行 Oracle 是合理的吗？
PS我提到RAM翻倍的唯一原因是为了证明我很难争论的论点的荒谬性。我真正要寻找的是证明禁用交换是合理的论据。
服务器在多次“内存不足”消息后崩溃，我正试图查明罪魁祸首。如果它在用户区——哪个进程。如果它在内核中 - 哪个内核模块。
我正在尝试找出如何使用崩溃实用程序来调查是什么触发了服务器上的 OOM。
作为安装一对新服务器的一部分，我开始了 14TB DRBD设备的初始化。大约在那个时候，在使用 DRBD 同步器速率配置并打开和关闭一些绑定的网络接口时，其中一台服务器崩溃了。在 30 秒内，它产生了 39Out of memory: Kill process ####条消息。然后它崩溃了：
Kernel panic - not syncing: Out of memory and no killable processes...
系统崩溃触发了kdump。现在我有一个很好的vmcore.flat文件，应该可以直接用来调查问题，但我很难找出所有内存的去向。
我知道的唯一资源是Dedoimedo 的站点，它有很好的说明，以及Kernel Crash Book。这些也恰好是答案中建议的唯一资源，因此我认为这crash是调查的唯一方法。
如果有其他方法可以对事件进行事后分析，我愿意接受。这只是crash我所知道的唯一实用程序。我现在只有vmcore.flat文件，我需要知道的是哪个组件占用了所有内存。我怀疑内核模块有问题，更具体地说是绑定模块之一（因为它在我关闭接口时被触发）、DRBD 模块（版本 8.3.15 在 CentOS 6.3 上由树构建）或其中之一10G 以太网模块（mlnx_en在树外构建，这是我关闭的接口，或者在树bnx2x内，这是保持活动的接口）。我只需要知道是否有办法验证我的怀疑。
到目前为止，我只设法使用崩溃实用程序提取了以下信息：
检查使用了多少内存
$ crash /usr/lib/debug/lib/modules/2.6.32-279.5.2.el6.x86_64/vmlinux vmcore.flat
....
crash> kmem -i
PAGES TOTAL PERCENTAGE
TOTAL MEM 16482587 62.9 GB ----
FREE 54610 213.3 MB 0% of TOTAL MEM
USED 16427977 62.7 GB 99% of TOTAL MEM
SHARED 4683 18.3 MB 0% of TOTAL MEM
BUFFERS 118 472 KB 0% of TOTAL MEM
CACHED 82 328 KB 0% of TOTAL MEM
SLAB 46635 182.2 MB 0% of TOTAL MEM
TOTAL SWAP 0 0 ----
SWAP USED 0 0 100% of TOTAL SWAP
SWAP FREE 0 0 0% of TOTAL SWAP
显然，它用完了内存。所有 64G 都不见了......但是在哪里？
试图查看是否有任何进程正在泄漏内存
似乎相关的唯一命令是ps（这是 的ps子命令crash）。它没有显示任何异常，但也没有显示任何有关内核线程的信息。
crash> ps
PID PPID CPU TASK ST %MEM VSZ RSS COMM
0 0 0 ffffffff81a8d020 RU 0.0 0 0 [swapper]
> 0 0 1 ffff88102c456040 RU 0.0 0 0 [swapper]
> 0 0 2 ffff88082c772aa0 RU 0.0 0 0 [swapper]
> 0 0 3 ffff88102c456aa0 RU 0.0 0 0 [swapper]
0 0 4 ffff88082c7b8ae0 RU 0.0 0 0 [swapper]
> 0 0 5 ffff88102c457500 RU 0.0 0 0 [swapper]
> 0 0 6 ffff88082c7d6aa0 RU 0.0 0 0 [swapper]
> 0 0 7 ffff88102c506080 RU 0.0 0 0 [swapper]
> 0 0 8 ffff88082c016ae0 RU 0.0 0 0 [swapper]
> 0 0 9 ffff88102c506ae0 RU 0.0 0 0 [swapper]
> 0 0 10 ffff88082c05caa0 RU 0.0 0 0 [swapper]
> 0 0 11 ffff88102c507540 RU 0.0 0 0 [swapper]
> 0 0 12 ffff88082c09cae0 RU 0.0 0 0 [swapper]
.....
4926 1 5 ffff880828a38ae0 ?? 0.0 0 0 mingetty
4928 1 1 ffff88102a4e8040 ?? 0.0 0 0 mingetty
4930 1 19 ffff880827af4080 ?? 0.0 0 0 mingetty
4932 1 2 ffff88100f122040 ?? 0.0 0 0 mingetty
4934 1 18 ffff8810296ea080 ?? 0.0 0 0 mingetty
4936 1047 4 ffff880ff342d540 IN 0.0 11184 948 udevd
4937 1047 5 ffff88082a240080 IN 0.0 11184 948 udevd
5060 3772 2 ffff88082881d540 ?? 0.0 0 0 sshd
5078 1 1 ffff88100f060ae0 ?? 0.0 0 0 sshd
5079 1 1 ffff88082b882ae0 ?? 0.0 0 0 bash
如果我取出内核线程（它们都显示 %MEM 为零），我们可以看到最后几乎没有运行任何东西：
crash> ps -u
PID PPID CPU TASK ST %MEM VSZ RSS COMM
1 0 1 ffff88082c41b500 ?? 0.0 19348 348 init
1047 1 2 ffff881029524040 IN 0.0 11188 948 udevd
3171 1 3 ffff880826ccaaa0 IN 0.0 27636 240 auditd
3172 1 17 ffff881029d1b500 IN 0.0 27636 240 auditd
> 3772 1 0 ffff88102b257500 RU 0.0 64072 668 sshd
4800 1 0 ffff88100f061540 ?? 0.0 0 0 dsm_om_shrsvcd
4842 1 16 ffff88100f012ae0 ?? 0.0 0 0 cmcld
4854 1 17 ffff88082a241540 ?? 0.0 0 0 cmlogd
4855 1 3 ffff88082796cae0 ?? 0.0 0 0 cmfileassistd
4856 1 18 ffff88082809d500 ?? 0.0 0 0 cmnetd
4860 1 0 ffff88082705aae0 ?? 0.0 0 0 cmresourced
4924 1 9 ffff88102a4e8aa0 ?? 0.0 0 0 mingetty
4926 1 5 ffff880828a38ae0 ?? 0.0 0 0 mingetty
4928 1 1 ffff88102a4e8040 ?? 0.0 0 0 mingetty
4930 1 19 ffff880827af4080 ?? 0.0 0 0 mingetty
4932 1 2 ffff88100f122040 ?? 0.0 0 0 mingetty
4934 1 18 ffff8810296ea080 ?? 0.0 0 0 mingetty
4936 1047 4 ffff880ff342d540 IN 0.0 11184 948 udevd
4937 1047 5 ffff88082a240080 IN 0.0 11184 948 udevd
5060 3772 2 ffff88082881d540 ?? 0.0 0 0 sshd
5078 1 1 ffff88100f060ae0 ?? 0.0 0 0 sshd
5079 1 1 ffff88082b882ae0 ?? 0.0 0 0 bash
5257 1 1 ffff8808279e6aa0 ?? 0.0 0 0 jnx_mlnxsnmp_da
正如 Soham 所建议的，包括更多的输出。不幸的是，我无法从中得出任何进一步的结论。我能做的最好的事情就是怀疑内核中有什么东西泄漏了内存，因为无论如何用户空间进程几乎都死了。
crash> ps -G | tail -n +2 | cut -b2- | gawk '{mem += $8} END {print "total " mem/1048576 "GB"}'
total 0.00391006GB
请注意，此时几乎所有用户态进程都已停止，因此报告的使用率较低是预料之中的。
内存不足消息：
正如我上面提到的，有 39 条“内存不足：”消息，它们是：
crash> log -m | grep Out
<3>[ 223.556616] Out of memory: Kill process 3189 (portreserve) score 1 or sacrifice child
<3>[ 223.787234] Out of memory: Kill process 3196 (rsyslogd) score 1 or sacrifice child
<3>[ 224.237119] Out of memory: Kill process 3728 (dbus-daemon) score 1 or sacrifice child
<3>[ 228.771770] Out of memory: Kill process 3758 (snmpd) score 1 or sacrifice child
<3>[ 229.033466] Out of memory: Kill process 3782 (xinetd) score 1 or sacrifice child
<3>[ 229.257710] Out of memory: Kill process 3782 (xinetd) score 1 or sacrifice child
<3>[ 229.484321] Out of memory: Kill process 3782 (xinetd) score 1 or sacrifice child
<3>[ 229.711169] Out of memory: Kill process 3782 (xinetd) score 1 or sacrifice child
<3>[ 229.934955] Out of memory: Kill process 3801 (cmproxyd) score 1 or sacrifice child
<3>[ 230.159542] Out of memory: Kill process 3812 (ntpd) score 1 or sacrifice child
<3>[ 230.382083] Out of memory: Kill process 3953 (master) score 1 or sacrifice child
<3>[ 230.606613] Out of memory: Kill process 3953 (master) score 1 or sacrifice child
<3>[ 230.829515] Out of memory: Kill process 3953 (master) score 1 or sacrifice child
<3>[ 230.832105] Out of memory: Kill process 3961 (crond) score 1 or sacrifice child
<3>[ 236.749746] Out of memory: Kill process 3974 (atd) score 1 or sacrifice child
<3>[ 236.969421] Out of memory: Kill process 4272 (dsm_sa_datamgrd) score 1 or sacrifice child
<3>[ 237.192102] Out of memory: Kill process 4492 (dsm_sa_datamgrd) score 1 or sacrifice child
<3>[ 237.746301] Out of memory: Kill process 4552 (dsm_sa_eventmgr) score 1 or sacrifice child
<3>[ 237.968308] Out of memory: Kill process 4613 (dsm_sa_snmpd) score 1 or sacrifice child
<3>[ 238.190550] Out of memory: Kill process 4614 (dsm_sa_snmpd) score 1 or sacrifice child
<3>[ 238.644020] Out of memory: Kill process 4643 (dsm_om_connsvcd) score 1 or sacrifice child
<3>[ 238.865658] Out of memory: Kill process 4643 (dsm_om_connsvcd) score 1 or sacrifice child
<3>[ 251.285450] Out of memory: Kill process 4643 (dsm_om_connsvcd) score 1 or sacrifice child
<3>[ 251.506601] Out of memory: Kill process 4800 (dsm_om_shrsvcd) score 1 or sacrifice child
<3>[ 251.727570] Out of memory: Kill process 4842 (cmcld) score 1 or sacrifice child
<3>[ 251.947085] Out of memory: Kill process 4842 (cmcld) score 1 or sacrifice child
<3>[ 252.167096] Out of memory: Kill process 4854 (cmlogd) score 1 or sacrifice child
<3>[ 252.384090] Out of memory: Kill process 4855 (cmfileassistd) score 1 or sacrifice child
<3>[ 252.603324] Out of memory: Kill process 4924 (mingetty) score 1 or sacrifice child
<3>[ 252.820757] Out of memory: Kill process 4926 (mingetty) score 1 or sacrifice child
<3>[ 253.037558] Out of memory: Kill process 4928 (mingetty) score 1 or sacrifice child
<3>[ 253.254908] Out of memory: Kill process 4930 (mingetty) score 1 or sacrifice child
<3>[ 253.257391] Out of memory: Kill process 4932 (mingetty) score 1 or sacrifice child
<3>[ 253.259357] Out of memory: Kill process 4934 (mingetty) score 1 or sacrifice child
<3>[ 253.261353] Out of memory: Kill process 5060 (sshd) score 1 or sacrifice child
<3>[ 253.263365] Out of memory: Kill process 5060 (sshd) score 1 or sacrifice child
<3>[ 253.264392] Out of memory: Kill process 5079 (bash) score 1 or sacrifice child
<3>[ 253.266352] Out of memory: Kill process 5257 (jnx_mlnxsnmp_da) score 1 or sacrifice child
<0>[ 253.529344] Kernel panic - not syncing: Out of memory and no killable processes...
系统输出：
crash> sys
KERNEL: /usr/lib/debug/lib/modules/2.6.32-279.5.2.el6.x86_64/vmlinux
DUMPFILE: pcdata03.vmcore.flat [PARTIAL DUMP]
CPUS: 32
DATE: Wed Feb 6 02:11:52 2013
UPTIME: 00:04:12
LOAD AVERAGE: 3.03, 0.95, 0.34
TASKS: 578
NODENAME: ....
RELEASE: 2.6.32-279.5.2.el6.x86_64
VERSION: #1 SMP Fri Aug 24 01:07:11 UTC 2012
MACHINE: x86_64 (2700 Mhz)
MEMORY: 64 GB
PANIC: "[ 253.529344] Kernel panic - not syncing: Out of memory and no killable processes..."
kmem-z
crash> kmem -z
NODE: 0 ZONE: 0 ADDR: ffff88000000a0c0 NAME: "DMA"
SIZE: 4095 PRESENT: 3839 MIN/LOW/HIGH: 5/6/7
VM_STAT:
NR_FREE_PAGES: 3936
NR_INACTIVE_ANON: 0
NR_ACTIVE_ANON: 0
NR_INACTIVE_FILE: 0
NR_ACTIVE_FILE: 0
NR_UNEVICTABLE: 0
NR_MLOCK: 0
NR_ANON_PAGES: 0
NR_FILE_MAPPED: 0
NR_FILE_PAGES: 0
NR_FILE_DIRTY: 0
NR_WRITEBACK: 0
NR_SLAB_RECLAIMABLE: 0
NR_SLAB_UNRECLAIMABLE: 0
NR_PAGETABLE: 0
NR_KERNEL_STACK: 0
NR_UNSTABLE_NFS: 0
NR_BOUNCE: 0
NR_VMSCAN_WRITE: 0
NR_VMSCAN_IMMEDIATE: 0
NR_WRITEBACK_TEMP: 0
NR_ISOLATED_ANON: 0
NR_ISOLATED_FILE: 0
NR_SHMEM: 0
NUMA_HIT: 0
NUMA_MISS: 0
NUMA_FOREIGN: 0
NUMA_INTERLEAVE_HIT: 0
NUMA_LOCAL: 0
NUMA_OTHER: 0
NR_ANON_TRANSPARENT_HUGEPAGES: 0
NODE: 0 ZONE: 1 ADDR: ffff880000012780 NAME: "DMA32"
SIZE: 1044480 PRESENT: 756520 MIN/LOW/HIGH: 1030/1287/1545
VM_STAT:
NR_FREE_PAGES: 30117
NR_INACTIVE_ANON: 0
NR_ACTIVE_ANON: 0
NR_INACTIVE_FILE: 1
NR_ACTIVE_FILE: 0
NR_UNEVICTABLE: 0
NR_MLOCK: 0
NR_ANON_PAGES: 0
NR_FILE_MAPPED: 0
NR_FILE_PAGES: 1
NR_FILE_DIRTY: 0
NR_WRITEBACK: 0
NR_SLAB_RECLAIMABLE: 4
NR_SLAB_UNRECLAIMABLE: 4150
NR_PAGETABLE: 0
NR_KERNEL_STACK: 0
NR_UNSTABLE_NFS: 0
NR_BOUNCE: 0
NR_VMSCAN_WRITE: 0
NR_VMSCAN_IMMEDIATE: 0
NR_WRITEBACK_TEMP: 0
NR_ISOLATED_ANON: 0
NR_ISOLATED_FILE: 0
NR_SHMEM: 0
NUMA_HIT: 575606
NUMA_MISS: 3
NUMA_FOREIGN: 0
NUMA_INTERLEAVE_HIT: 0
NUMA_LOCAL: 575598
NUMA_OTHER: 11
NR_ANON_TRANSPARENT_HUGEPAGES: 0
NODE: 0 ZONE: 2 ADDR: ffff88000001ae40 NAME: "Normal"
SIZE: 7602176 PRESENT: 7498240 MIN/LOW/HIGH: 10217/12771/15325
VM_STAT:
NR_FREE_PAGES: 10443
NR_INACTIVE_ANON: 134
NR_ACTIVE_ANON: 197
NR_INACTIVE_FILE: -47
NR_ACTIVE_FILE: 42
NR_UNEVICTABLE: 0
NR_MLOCK: 0
NR_ANON_PAGES: 219
NR_FILE_MAPPED: 115
NR_FILE_PAGES: 45
NR_FILE_DIRTY: 0
NR_WRITEBACK: 0
NR_SLAB_RECLAIMABLE: 908
NR_SLAB_UNRECLAIMABLE: 18771
NR_PAGETABLE: 91
NR_KERNEL_STACK: 556
NR_UNSTABLE_NFS: 0
NR_BOUNCE: 0
NR_VMSCAN_WRITE: 0
NR_VMSCAN_IMMEDIATE: 0
NR_WRITEBACK_TEMP: 0
NR_ISOLATED_ANON: 0
NR_ISOLATED_FILE: 0
NR_SHMEM: 34
NUMA_HIT: 8243991
NUMA_MISS: 648
NUMA_FOREIGN: 4593726
NUMA_INTERLEAVE_HIT: 20066
NUMA_LOCAL: 8243829
NUMA_OTHER: 810
NR_ANON_TRANSPARENT_HUGEPAGES: 0
NODE: 0 ZONE: 3 ADDR: ffff880000023500 NAME: "Movable"
[unpopulated]
NODE: 1 ZONE: 0 ADDR: ffff880840000040 NAME: "DMA"
[unpopulated]
NODE: 1 ZONE: 1 ADDR: ffff880840008700 NAME: "DMA32"
[unpopulated]
NODE: 1 ZONE: 2 ADDR: ffff880840010dc0 NAME: "Normal"
SIZE: 8388608 PRESENT: 8273920 MIN/LOW/HIGH: 11274/14092/16911
VM_STAT:
NR_FREE_PAGES: 10114
NR_INACTIVE_ANON: 417
NR_ACTIVE_ANON: 83
NR_INACTIVE_FILE: 47
NR_ACTIVE_FILE: 32
NR_UNEVICTABLE: 0
NR_MLOCK: 0
NR_ANON_PAGES: 436
NR_FILE_MAPPED: 22
NR_FILE_PAGES: 154
NR_FILE_DIRTY: 0
NR_WRITEBACK: 0
NR_SLAB_RECLAIMABLE: 863
NR_SLAB_UNRECLAIMABLE: 21939
NR_PAGETABLE: 134
NR_KERNEL_STACK: 27
NR_UNSTABLE_NFS: 0
NR_BOUNCE: 0
NR_VMSCAN_WRITE: 3
NR_VMSCAN_IMMEDIATE: 5
NR_WRITEBACK_TEMP: 0
NR_ISOLATED_ANON: 0
NR_ISOLATED_FILE: 23
NR_SHMEM: 20
NUMA_HIT: 4332488
NUMA_MISS: 4593726
NUMA_FOREIGN: 665
NUMA_INTERLEAVE_HIT: 20007
NUMA_LOCAL: 4309300
NUMA_OTHER: 4616914
NR_ANON_TRANSPARENT_HUGEPAGES: 0
NODE: 1 ZONE: 3 ADDR: ffff880840019480 NAME: "Movable"
[unpopulated]
kmem -f
crash> kmem -f
NODE
0
ZONE NAME SIZE FREE MEM_MAP START_PADDR START_MAPNR
0 DMA 4095 3936 ffffea0000000038 1000 0
AREA SIZE FREE_AREA_STRUCT BLOCKS PAGES
0 4k ffff880000012128 2 2
0 4k ffff880000012138 0 0
0 4k ffff880000012148 0 0
0 4k ffff880000012158 0 0
0 4k ffff880000012168 0 0
1 8k ffff880000012180 1 2
1 8k ffff880000012190 0 0
1 8k ffff8800000121a0 0 0
1 8k ffff8800000121b0 0 0
1 8k ffff8800000121c0 0 0
2 16k ffff8800000121d8 1 4
2 16k ffff8800000121e8 0 0
2 16k ffff8800000121f8 0 0
2 16k ffff880000012208 0 0
2 16k ffff880000012218 0 0
3 32k ffff880000012230 1 8
3 32k ffff880000012240 0 0
3 32k ffff880000012250 0 0
3 32k ffff880000012260 0 0
3 32k ffff880000012270 0 0
4 64k ffff880000012288 1 16
4 64k ffff880000012298 0 0
4 64k ffff8800000122a8 0 0
4 64k ffff8800000122b8 0 0
4 64k ffff8800000122c8 0 0
5 128k ffff8800000122e0 0 0
5 128k ffff8800000122f0 0 0
5 128k ffff880000012300 0 0
5 128k ffff880000012310 0 0
5 128k ffff880000012320 0 0
6 256k ffff880000012338 1 64
6 256k ffff880000012348 0 0
6 256k ffff880000012358 0 0
6 256k ffff880000012368 0 0
6 256k ffff880000012378 0 0
7 512k ffff880000012390 0 0
7 512k ffff8800000123a0 0 0
7 512k ffff8800000123b0 0 0
7 512k ffff8800000123c0 0 0
7 512k ffff8800000123d0 0 0
8 1024k ffff8800000123e8 1 256
8 1024k ffff8800000123f8 0 0
8 1024k ffff880000012408 0 0
8 1024k ffff880000012418 0 0
8 1024k ffff880000012428 0 0
9 2048k ffff880000012440 0 0
9 2048k ffff880000012450 0 0
9 2048k ffff880000012460 0 0
9 2048k ffff880000012470 1 512
9 2048k ffff880000012480 0 0
10 4096k ffff880000012498 0 0
10 4096k ffff8800000124a8 0 0
10 4096k ffff8800000124b8 3 3072
10 4096k ffff8800000124c8 0 0
10 4096k ffff8800000124d8 0 0
ZONE NAME SIZE FREE MEM_MAP START_PADDR START_MAPNR
1 DMA32 1044480 30117 ffffea0000038000 1000000 4095
AREA SIZE FREE_AREA_STRUCT BLOCKS PAGES
0 4k ffff88000001a7e8 24 24
0 4k ffff88000001a7f8 4 4
0 4k ffff88000001a808 13 13
0 4k ffff88000001a818 0 0
0 4k ffff88000001a828 0 0
1 8k ffff88000001a840 2 4
1 8k ffff88000001a850 2 4
1 8k ffff88000001a860 4 8
1 8k ffff88000001a870 0 0
1 8k ffff88000001a880 0 0
2 16k ffff88000001a898 0 0
2 16k ffff88000001a8a8 3 12
2 16k ffff88000001a8b8 4 16
2 16k ffff88000001a8c8 0 0
2 16k ffff88000001a8d8 0 0
3 32k ffff88000001a8f0 0 0
3 32k ffff88000001a900 3 24
3 32k ffff88000001a910 3 24
3 32k ffff88000001a920 0 0
3 32k ffff88000001a930 0 0
4 64k ffff88000001a948 1 16
4 64k ffff88000001a958 3 48
4 64k ffff88000001a968 6 96
4 64k ffff88000001a978 0 0
4 64k ffff88000001a988 0 0
5 128k ffff88000001a9a0 0 0
5 128k ffff88000001a9b0 3 96
5 128k ffff88000001a9c0 7 224
5 128k ffff88000001a9d0 0 0
5 128k ffff88000001a9e0 0 0
6 256k ffff88000001a9f8 0 0
6 256k ffff88000001aa08 1 64
6 256k ffff88000001aa18 6 384
6 256k ffff88000001aa28 0 0
6 256k ffff88000001aa38 0 0
7 512k ffff88000001aa50 1 128
7 512k ffff88000001aa60 0 0
7 512k ffff88000001aa70 8 1024
7 512k ffff88000001aa80 0 0
7 512k ffff88000001aa90 0 0
8 1024k ffff88000001aaa8 1 256
8 1024k ffff88000001aab8 1 256
8 1024k ffff88000001aac8 5 1280
8 1024k ffff88000001aad8 0 0
8 1024k ffff88000001aae8 0 0
9 2048k ffff88000001ab00 0 0
9 2048k ffff88000001ab10 1 512
9 2048k ffff88000001ab20 3 1536
9 2048k ffff88000001ab30 1 512
9 2048k ffff88000001ab40 0 0
10 4096k ffff88000001ab58 0 0
10 4096k ffff88000001ab68 0 0
10 4096k ffff88000001ab78 22 22528
10 4096k ffff88000001ab88 1 1024
10 4096k ffff88000001ab98 0 0
ZONE NAME SIZE FREE MEM_MAP START_PADDR START_MAPNR
2 Normal 7602176 10443 ffffea0003800000 100000000 1048575
AREA SIZE FREE_AREA_STRUCT BLOCKS PAGES
0 4k ffff880000022ea8 365 365
0 4k ffff880000022eb8 274 274
0 4k ffff880000022ec8 274 274
0 4k ffff880000022ed8 0 0
0 4k ffff880000022ee8 0 0
1 8k ffff880000022f00 99 198
1 8k ffff880000022f10 94 188
1 8k ffff880000022f20 360 720
1 8k ffff880000022f30 0 0
1 8k ffff880000022f40 0 0
2 16k ffff880000022f58 30 120
2 16k ffff880000022f68 41 164
2 16k ffff880000022f78 204 816
2 16k ffff880000022f88 0 0
2 16k ffff880000022f98 0 0
3 32k ffff880000022fb0 9 72
3 32k ffff880000022fc0 19 152
3 32k ffff880000022fd0 138 1104
3 32k ffff880000022fe0 0 0
3 32k ffff880000022ff0 0 0
4 64k ffff880000023008 7 112
4 64k ffff880000023018 4 64
4 64k ffff880000023028 77 1232
4 64k ffff880000023038 0 0
4 64k ffff880000023048 0 0
5 128k ffff880000023060 3 96
5 128k ffff880000023070 3 96
5 128k ffff880000023080 43 1376
5 128k ffff880000023090 0 0
5 128k ffff8800000230a0 0 0
6 256k ffff8800000230b8 0 0
6 256k ffff8800000230c8 0 0
6 256k ffff8800000230d8 13 832
6 256k ffff8800000230e8 0 0
6 256k ffff8800000230f8 0 0
7 512k ffff880000023110 0 0
7 512k ffff880000023120 0 0
7 512k ffff880000023130 5 640
7 512k ffff880000023140 0 0
7 512k ffff880000023150 0 0
8 1024k ffff880000023168 0 0
8 1024k ffff880000023178 0 0
8 1024k ffff880000023188 0 0
8 1024k ffff880000023198 0 0
8 1024k ffff8800000231a8 0 0
9 2048k ffff8800000231c0 0 0
9 2048k ffff8800000231d0 0 0
9 2048k ffff8800000231e0 1 512
9 2048k ffff8800000231f0 0 0
9 2048k ffff880000023200 0 0
10 4096k ffff880000023218 0 0
10 4096k ffff880000023228 0 0
10 4096k ffff880000023238 0 0
10 4096k ffff880000023248 1 1024
10 4096k ffff880000023258 0 0
ZONE NAME SIZE FREE MEM_MAP START_PADDR START_MAPNR
3 Movable 0 0 0 0 0
--------------------------------------------------------------------------
NODE
1
ZONE NAME SIZE FREE MEM_MAP START_PADDR START_MAPNR
0 DMA 0 0 0 0 0
ZONE NAME SIZE FREE MEM_MAP START_PADDR START_MAPNR
1 DMA32 0 0 0 0 0
ZONE NAME SIZE FREE MEM_MAP START_PADDR START_MAPNR
2 Normal 8388608 10114 ffffea001ce00000 840000000 0
AREA SIZE FREE_AREA_STRUCT BLOCKS PAGES
0 4k ffff880840018e28 405 405
0 4k ffff880840018e38 162 162
0 4k ffff880840018e48 317 317
0 4k ffff880840018e58 0 0
0 4k ffff880840018e68 0 0
1 8k ffff880840018e80 106 212
1 8k ffff880840018e90 70 140
1 8k ffff880840018ea0 269 538
1 8k ffff880840018eb0 0 0
1 8k ffff880840018ec0 0 0
2 16k ffff880840018ed8 24 96
2 16k ffff880840018ee8 18 72
2 16k ffff880840018ef8 207 828
2 16k ffff880840018f08 0 0
2 16k ffff880840018f18 0 0
3 32k ffff880840018f30 20 160
3 32k ffff880840018f40 4 32
3 32k ffff880840018f50 148 1184
3 32k ffff880840018f60 0 0
3 32k ffff880840018f70 0 0
4 64k ffff880840018f88 17 272
4 64k ffff880840018f98 2 32
4 64k ffff880840018fa8 95 1520
4 64k ffff880840018fb8 0 0
4 64k ffff880840018fc8 0 0
5 128k ffff880840018fe0 4 128
5 128k ffff880840018ff0 1 32
5 128k ffff880840019000 37 1184
5 128k ffff880840019010 0 0
5 128k ffff880840019020 0 0
6 256k ffff880840019038 0 0
6 256k ffff880840019048 0 0
6 256k ffff880840019058 8 512
6 256k ffff880840019068 0 0
6 256k ffff880840019078 0 0
7 512k ffff880840019090 0 0
7 512k ffff8808400190a0 0 0
7 512k ffff8808400190b0 1 128
7 512k ffff8808400190c0 0 0
7 512k ffff8808400190d0 0 0
8 1024k ffff8808400190e8 0 0
8 1024k ffff8808400190f8 0 0
8 1024k ffff880840019108 1 256
8 1024k ffff880840019118 0 0
8 1024k ffff880840019128 0 0
9 2048k ffff880840019140 0 0
9 2048k ffff880840019150 0 0
9 2048k ffff880840019160 1 512
9 2048k ffff880840019170 1 512
9 2048k ffff880840019180 0 0
10 4096k ffff880840019198 0 0
10 4096k ffff8808400191a8 0 0
10 4096k ffff8808400191b8 0 0
10 4096k ffff8808400191c8 1 1024
10 4096k ffff8808400191d8 0 0
ZONE NAME SIZE FREE MEM_MAP START_PADDR START_MAPNR
3 Movable 0 0 0 0 0
nr_free_pages: 54610 (found 54742)
一点点运动foreach bt
crash> foreach bt | awk '$1 == "#0" { $2 = ""; print }' | sort | uniq -c
31 #0 crash_nmi_callback at ffffffff81029df6
1 #0 machine_kexec at ffffffff8103281b
546 #0 schedule at ffffffff814fda62
事实上，它们要么崩溃了，要么正在等待内存（或者我没有正确阅读）。