[jira] [Comment Edited] (HTRACE-312) htraced: if GOMAXPROCS is left at 1, set it to the number of CPUs

["Colin Patrick McCabe (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HTRACE-312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15034496#comment-15034496 ] 

Colin Patrick McCabe edited comment on HTRACE-312 at 12/1/15 9:34 PM:
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Using {{-cpu 1}} I get 26341 ns/op, using {{-cpu 16}} I get 24671 ns/op, using {{-benchtime=15s}}, for {{BenchmarkDatastoreWrites}}.  In general, I would expect gains since we spend a lot of time on serialization and deserialization, which consume CPU.

edit: this was was on a 4-core machine with hyperthreading.  I guess {{-cpu 8}} would be more appropriate here.  I've seen bigger gains on some of the cluster nodes, which have 8 hyperthreaded CPUs.


was (Author: cmccabe):
Using {{-cpu 1}} I get 26341 ns/op, using {{-cpu 16}} I get 24671 ns/op, using {{-benchtime=15s}}, for {{BenchmarkDatastoreWrites}}.  In general, I would expect gains since we spend a lot of time on serialization and deserialization, which consume CPU.

> htraced: if GOMAXPROCS is left at 1, set it to the number of CPUs
> -----------------------------------------------------------------
>
>                 Key: HTRACE-312
>                 URL: https://issues.apache.org/jira/browse/HTRACE-312
>             Project: HTrace
>          Issue Type: Improvement
>          Components: htraced
>    Affects Versions: 4.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HTRACE-312.001.patch
>
>
> htraced: if GOMAXPROCS is left at 1, set it to the number of CPUs.



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