[jira] [Commented] (TS-3433) Use extra memory than expected

["Bryan Call (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TS-3433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14584183#comment-14584183 ] 

Bryan Call commented on TS-3433:
--------------------------------

Can you send a sigusr1 to the traffic_server process and grab the memory dump from traffic.out?

> Use extra memory than expected
> ------------------------------
>
>                 Key: TS-3433
>                 URL: https://issues.apache.org/jira/browse/TS-3433
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: Cache
>            Reporter: pjack
>             Fix For: sometime
>
>
> the storage size is 16G, and ram_cache.size use the default value : (-1)
> I expect the memory of the process should be less than 200MB, but it used 1.5G and more until my server out of memory.
> I checked the ram_cache size and I found bytes_used > total_bytes.
> OS: Ubuntu 12.04 with 3.13.0-32 kernal
> traffic server version: 4.2.3
> $curl http://localhost:8080/_status | grep ram
> "proxy.process.cache.ram_cache.total_bytes": "13410304",
> "proxy.process.cache.ram_cache.bytes_used": "133754880",
> "proxy.process.cache.ram_cache.hits": "12322",
> "proxy.process.cache.ram_cache.misses": "55584",
> But if I setup the ram_cache.size to a fixed value, then the bytes_used will be always smaller than total_bytes. Please let me know if it is a correct scenario or some kind of bug?
> Thanks!
>  



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