[jira] [Created] (TS-3028) Some ET_NET threads go to uninterruptable sleep with empty disk I/O

["Jungwoo Lee (JIRA)" <ji...@apache.org>]

Jungwoo Lee created TS-3028:
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             Summary: Some ET_NET threads go to uninterruptable sleep with empty disk I/O
                 Key: TS-3028
                 URL: https://issues.apache.org/jira/browse/TS-3028
             Project: Traffic Server
          Issue Type: Bug
          Components: Core
            Reporter: Jungwoo Lee
         Attachments: disk_state.png, process_state.png

I use ATS as a cache server.
Caching contents are a lot of small size files, image, html, xml and etc..

Sometimes ET_NET threads go to uninterruptable sleep and no disk I/O occurrs.

I attach pictures showing the status of threads( by shell command top ) and those of disk( by shell command iostat 1 )

And ATS system uses 2TB disk as a cache and 16GB memory.



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