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