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Posted to issues@ignite.apache.org by "Andrey Gura (JIRA)" <ji...@apache.org> on 2016/06/08 13:08:20 UTC

[jira] [Comment Edited] (IGNITE-2969) Optimistic transactions support in deadlock detection

    [ https://issues.apache.org/jira/browse/IGNITE-2969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15319153#comment-15319153 ] 

Andrey Gura edited comment on IGNITE-2969 at 6/8/16 1:08 PM:
-------------------------------------------------------------

Rerun benchmarks more accurate. Results below:

{noformat}
                                                 With detection           Without detection

tx-put-1-backup                           19,608.72               19,854.48
tx-put-offheap-1-backup                   18,480.55               17,938.68
tx-put-offheap-val-1-backup               20,423.42               19,936.32
tx-put-get-1-backup                       18,250.85              18,526.29
tx-put-get-offheap                        16,033.24              16,433.10
tx-put-get-offheap-val-1-backup           18,069.81              18,502.69
{noformat}

So I can conclude that additional synchronization doesn't affect performance.


was (Author: agura):
Rerun benchmarks more accurate. Results below:

{noformat}
                                                 With detection           Without detection

tx-put-1-backup                           19,608.72               19,854.48
tx-put-offheap-1-backup              18,480.55               17,938.68
tx-put-offheap-val-1-backup        20,423.42               19,936.32
tx-put-get-1-backup                     18,250.85              18,526.29
tx-put-get-offheap                        16,033.24              16,433.10
tx-put-get-offheap-val-1-backup  18,069.81              18,502.69
{noformat}

So I can conclude that additional synchronization doesn't affect performance.

> Optimistic transactions support in deadlock detection
> -----------------------------------------------------
>
>                 Key: IGNITE-2969
>                 URL: https://issues.apache.org/jira/browse/IGNITE-2969
>             Project: Ignite
>          Issue Type: Improvement
>          Components: cache
>            Reporter: Andrey Gura
>            Assignee: Andrey Gura
>             Fix For: 1.7
>
>
> Deadlock detection doesn't support optimistic transactions now. It should be implemented.



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