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Posted to issues@trafficserver.apache.org by "Zhao Yongming (JIRA)" <ji...@apache.org> on 2013/09/10 12:24:51 UTC
[jira] [Commented] (TS-2205) AIO caused system hang
[ https://issues.apache.org/jira/browse/TS-2205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13762922#comment-13762922 ]
Zhao Yongming commented on TS-2205:
-----------------------------------
this is a issue reported from ShangHai Jiao Tong Univercity http://www.sjtu.edu.cn/
> AIO caused system hang
> ----------------------
>
> Key: TS-2205
> URL: https://issues.apache.org/jira/browse/TS-2205
> Project: Traffic Server
> Issue Type: Bug
> Components: Cache
> Affects Versions: 4.0.1
> Reporter: Zhao Yongming
> Assignee: weijin
> Fix For: 4.1.0
>
>
> the system may hang with AIO thread CPU usage rising:
> {code}
> top - 17:10:46 up 38 days, 22:43, 2 users, load average: 11.34, 2.97, 2.75
> Tasks: 512 total, 55 running, 457 sleeping, 0 stopped, 0 zombie
> Cpu(s): 6.9%us, 54.8%sy, 0.0%ni, 37.3%id, 0.0%wa, 0.0%hi, 0.9%si, 0.0%st
> Mem: 65963696k total, 64318444k used, 1645252k free, 241496k buffers
> Swap: 33554424k total, 20416k used, 33534008k free, 14864188k cached
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 32498 ats 20 0 59.3g 45g 25m R 65.8 72.1 24:44.15 [ET_AIO 5]
> 3213 root 20 0 0 0 0 S 15.4 0.0 13:38.32 kondemand/7
> 3219 root 20 0 0 0 0 S 15.1 0.0 16:32.78 kondemand/13
> 4 root 20 0 0 0 0 S 13.8 0.0 33:18.13 ksoftirqd/0
> 13 root 20 0 0 0 0 S 13.4 0.0 21:45.18 ksoftirqd/2
> 37 root 20 0 0 0 0 S 13.4 0.0 19:42.34 ksoftirqd/8
> 45 root 20 0 0 0 0 S 13.4 0.0 18:31.17 ksoftirqd/10
> 32483 ats 20 0 59.3g 45g 25m R 13.4 72.1 16:47.14 [ET_AIO 6]
> 32487 ats 20 0 59.3g 45g 25m R 13.4 72.1 16:46.93 [ET_AIO 2]
> 25 root 20 0 0 0 0 S 13.1 0.0 19:02.18 ksoftirqd/5
> 65 root 20 0 0 0 0 S 13.1 0.0 19:24.04 ksoftirqd/15
> 32477 ats 20 0 59.3g 45g 25m R 13.1 72.1 16:32.90 [ET_AIO 0]
> 32478 ats 20 0 59.3g 45g 25m R 13.1 72.1 16:49.77 [ET_AIO 1]
> 32479 ats 20 0 59.3g 45g 25m S 13.1 72.1 16:41.77 [ET_AIO 2]
> 32481 ats 20 0 59.3g 45g 25m R 13.1 72.1 16:50.40 [ET_AIO 4]
> 32482 ats 20 0 59.3g 45g 25m R 13.1 72.1 16:47.42 [ET_AIO 5]
> 32484 ats 20 0 59.3g 45g 25m R 13.1 72.1 16:25.81 [ET_AIO 7]
> 32485 ats 20 0 59.3g 45g 25m S 13.1 72.1 16:52.71 [ET_AIO 0]
> 32486 ats 20 0 59.3g 45g 25m S 13.1 72.1 16:51.69 [ET_AIO 1]
> 32491 ats 20 0 59.3g 45g 25m S 13.1 72.1 16:50.58 [ET_AIO 6]
> 32492 ats 20 0 59.3g 45g 25m S 13.1 72.1 16:49.12 [ET_AIO 7]
> 32480 ats 20 0 59.3g 45g 25m S 12.8 72.1 16:47.39 [ET_AIO 3]
> 32488 ats 20 0 59.3g 45g 25m R 12.8 72.1 16:52.16 [ET_AIO 3]
> 32489 ats 20 0 59.3g 45g 25m S 12.8 72.1 16:50.79 [ET_AIO 4]
> 32490 ats 20 0 59.3g 45g 25m R 12.8 72.1 16:52.61 [ET_AIO 5]
> {code}
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