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https://issues.apache.org/jira/browse/TS-46?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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John Plevyak updated TS-46:
---------------------------
Attachment: ts-partition-size-jp-v2.patch
Version 2. This patch doesn't do unaligned reads and add support for large
fragments (16MB).
The aggregation buffer is only 2MB which effectively limits objects to just
less than that.
This patch increased the size of the aggregation buffer (to 2MB) as well as the
evacuation
buffers and also added a new fast allocate aligned buffer size of 64K.
> 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,
> ts-partition-size-jp-v2.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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