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https://issues.apache.org/jira/browse/TS-33?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12778565#action_12778565
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John Plevyak commented on TS-33:
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Given that keys are hashed to a partition and each partition has its own write
position,
it makes more sense to minimize the number of partiitons.
In order to reach current and projected disk sizes we will need to increase the
current directory
entry size from 8 bytes to 10 bytes. That will allow partitions of 0.5PB which
should be sufficient
given that you can have a bunch of those.
So, the new proposal is:
10 byte directory entries
not configurable, just use the max size possible
> Make the 8GB disk cache partioning configurable
> -----------------------------------------------
>
> Key: TS-33
> URL: https://issues.apache.org/jira/browse/TS-33
> Project: Traffic Server
> Issue Type: Improvement
> Components: Core
> Reporter: Leif Hedstrom
>
> Right now, we split the disk cache up into 8GB chunks (which implies 8GB
> cache evictions). This might not be optimal for all applications, some might
> want to make it a lot smaller (e.g. with a smaller SSD disk), some maybe even
> bigger. Making this configurable, via records.config, would be very useful.
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