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Posted to dev@qpid.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/04/19 10:58:00 UTC

[jira] [Commented] (PROTON-2321) Add benchmark for pn_data_t initialization (PROTON-2229)

    [ https://issues.apache.org/jira/browse/PROTON-2321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324940#comment-17324940 ] 

ASF GitHub Bot commented on PROTON-2321:
----------------------------------------

jiridanek commented on pull request #286:
URL: https://github.com/apache/qpid-proton/pull/286#issuecomment-822377843


   Travis results https://travis-ci.com/github/apache/qpid-proton/jobs/499408632#L2988
   
   ```
   1: -------------------------------------------------------------------------------------
   1: Benchmark                                           Time             CPU   Iterations
   1: -------------------------------------------------------------------------------------
   1: BM_Encode10MbMessage/put_binary count:1          1.36 ms         1.36 ms          571
   1: BM_Encode10MbMessage/put_binary count:2          34.1 ms         34.1 ms           20
   ```


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> Add benchmark for pn_data_t initialization (PROTON-2229)
> --------------------------------------------------------
>
>                 Key: PROTON-2321
>                 URL: https://issues.apache.org/jira/browse/PROTON-2321
>             Project: Qpid Proton
>          Issue Type: Test
>          Components: proton-c
>    Affects Versions: proton-c-0.33.0
>            Reporter: Jiri Daněk
>            Assignee: Jiri Daněk
>            Priority: Major
>             Fix For: proton-c-0.35.0
>
>
> {noformat}
> -----------------------------------------------------------------------------------
> Benchmark                                         Time             CPU   Iterations
> -----------------------------------------------------------------------------------
> // size_t size = bytes->size + 0;
> BM_Encode10MbMessage/put_binary count:1        71.7 ms         70.4 ms           10
> BM_Encode10MbMessage/put_binary count:10        239 ms          205 ms            3
> // size_t size = bytes->size + 1;
> BM_Encode10MbMessage/put_binary count:1        1.25 ms        0.874 ms          744
> BM_Encode10MbMessage/put_binary count:10       1059 ms         1045 ms            1
> // size_t size = bytes->size + 2;
> BM_Encode10MbMessage/put_binary count:1        1.22 ms        0.916 ms          634
> BM_Encode10MbMessage/put_binary count:10        178 ms          135 ms            5
> // size_t size = pn_max(bytes->size+1, PNI_INTERN_MINSIZE);
> BM_Encode10MbMessage/put_binary count:1       0.941 ms        0.815 ms          783
> BM_Encode10MbMessage/put_binary count:10       1390 ms         1187 ms            1
> // size_t size = pn_max(bytes->size+2, PNI_INTERN_MINSIZE);
> BM_Encode10MbMessage/put_binary count:1       0.922 ms        0.811 ms          718
> BM_Encode10MbMessage/put_binary count:10        184 ms          144 ms            5
> {noformat}
> The above shows that + 1 improves things significantly, but there is a scenario where + 2 is even better.
> {code}
> static int pni_data_intern_node(pn_data_t *data, pni_node_t *node)
> {
>   pn_bytes_t *bytes = pni_data_bytes(data, node);
>   if (!bytes) return 0;
>   if (data->buf == NULL) {
>     // Heuristic to avoid growing small buffers too much
>     // size + 1 to allow for zero termination
>     size_t size = pn_max(bytes->size+1, PNI_INTERN_MINSIZE);
>    ...
> {code}



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