H3C Comware Software, Version 7.1.054, Release 7103P09
Copyright (c) 2004-2016 Hangzhou H3C Tech. Co., Ltd. All rights reserved.
H3C SR6608 uptime is 192 weeks, 1 day, 21 hours, 53 minutes
===============display device verbose===============
Slot No. Board type Status Primary SubSlots
---------------------------------------------------------------------
0 RT-RPE-X3 Normal Master 0
1 RT-RPE-X3 Normal Standby 0
2 FIP-240 Normal N/A 4
3 FIP-240 Normal N/A 4
4 FIP-240 Normal N/A 4
5 FIP-240 Normal N/A 4
现场反馈设备内存利用率从81%突然上升到85%,之前都是在81%以下,未有告警。此次引发告警发现设备内存率较高,异常单板为主用主控slot0。
===============display
memory===============
The statistics about memory is measured in KB:
Slot 0:
Total Used Free Shared Buffers Cached FreeRatio
Mem: 2052016 1761324 290692 0 0 235308 14.2%
-/+ Buffers/Cache: 1526016 526000
Swap: 0 0 0
异常进程主要是mbuf_vdb5,且mbuf_vdb5隔一段时间升高,现场版本为Release 7103P09较老,此问题为mbuf_vdb5 内存丢失问题,R7612及其之后的版本已经合入解决。
===============display system internal kernel memory pool slot 0===============
252518 257768 4096 0 7 8 36824 36824 mbuf_vdb5
Active Number Size Align Slab Pg/Slab ASlabs NSlabs Name
258030 258055 4096 0 7 8 36865 36865 mbuf_vdb5///约占1180M
1)需继续查看mbuf_vdb5都是谁申请的:
[H3C-probe]display system internal kernel memory pool name mbuf_vdb5
[H3C-probe]display system internal kernel memory pool name mbuf_vdb5 slot 0
Active Number Size Align Slab Pg/Slab ASlabs NSlabs Name
255182 262682 4096 0 7 8 37526 37526 mbuf_vdb5
Allocation list:
Tag Number
0x3610000 254666
0xf060000 494
2)根据上面看哪个tag申请的最多(number数值),比如是3610000最多的话:
[H3C-probe]display system internal kernel memory pool name mbuf_vdb5 tag 3610000 slot 5
3)然后根据2)打印出的信息,再其中随便挑其中的5个地址,执行下面命令5次:
[H3C-probe]display system internal kernel memory dump address c6fcc080 length 1024 slot 0
[H3C-probe]display system internal kernel memory dump address a2f98000 length 1024 slot 0
[H3C-probe]display system internal kernel memory dump address c6adc080 length 1024 slot 0
[H3C-probe]display system internal kernel memory dump address c6acc080 length 1024 slot 0
[H3C-probe]display system internal kernel memory dump address c6b3c080 length 1024 slot 0
4) 打包信息400返回。
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