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https://issues.apache.org/jira/browse/TS-46?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12780630#action_12780630
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George Paul commented on TS-46:
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I have tested this patch for 3+hrs on ubuntu 8.04LTS x86_64 w/ 2 disks and I
have not noticed any issues in forward proxy mode. Preliminary indications
indicate performance has improved >50% with these changes with roughly same CPU
utilization with logging off but more thorough perf-testing is needed.
-George
> increase cache partition size to avoid write-aggregation seeks
> --------------------------------------------------------------
>
> Key: TS-46
> URL: https://issues.apache.org/jira/browse/TS-46
> Project: Traffic Server
> Issue Type: Improvement
> Components: Cache
> Environment: all
> Reporter: John Plevyak
> Attachments: ts-partition-size-jp-v1.patch
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Currently cache partitions are 8GB. Because each has a write pointer, this
> means on a decent size
> disk there are a hundred or more write pointers which means a lot of seeking
> for writes
> (which really should be aggregated). The proposal is to make it possible to
> have large partitions
> (up to .5 PB) by increasing the side of the cache directory entry from 8 to
> 10 bytes and using the
> additional bits for the offset.
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