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Posted to issues@ignite.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/08/28 19:20:00 UTC
[jira] [Commented] (IGNITE-1678) IgniteAtomicSequence: make
following reservations in advance
[ https://issues.apache.org/jira/browse/IGNITE-1678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16595480#comment-16595480 ]
ASF GitHub Bot commented on IGNITE-1678:
----------------------------------------
GitHub user DmitriyGovorukhin opened a pull request:
https://github.com/apache/ignite/pull/4637
IGNITE-1678 IgniteAtomicSequence: make following reservations in advance
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gridgain/apache-ignite ignite-1678
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/ignite/pull/4637.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #4637
----
commit ed9c2d27cdac5e65fe1689a4583678b9cbd1b3d1
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-26T07:35:01Z
IGNITE-1678 add percentage for atomic seq reservation in config + interfaces
commit cbfe5932a4b1230bb1aac8075004eea73479e7b2
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-26T07:53:47Z
IGNITE-1678 add percentage as parameter for atomic seq
commit 4a1d0c244fe015c7aaee7861857e84f05b985fc2
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-26T09:31:07Z
IGNITE-1678 add new test + small test updates
commit 839f43adf80a04e4a2778983560031592a20a89e
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-26T11:45:49Z
IGNITE-1678 first implementation (fully not working)
commit bd46569fc1e1f65709ac7a838f9b76d4df5c39d9
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-26T17:36:22Z
IGNITE-1678 minor test fix
commit 62bc2c94601d15a3eb3c939313ae88fbb81ca0fb
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-26T18:29:52Z
IGNITE-1678 fix config for chaining
commit 2d2627056ca288d95c68934286c0e80e66b4ca4e
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-26T18:48:07Z
IGNITE-1678 set default reservation percentage as 100
commit cf9a98f938f740c226b71ad73e734ac1834d97fe
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-27T10:44:39Z
IGNITE-1678 minor assert added + fix NPE
commit 0415064f4dbbfb3bea6d359467af1525af235b68
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-28T08:36:57Z
IGNITE-1678 rework reservation, add reservation context
commit 589297a406421a72254f949a1b0cb19cf14b9a26
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-28T09:42:21Z
IGNITE-1678 test refactoring
commit 4cdaf252de5526c19ba8672ac10819e9a983e1a1
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-28T16:50:00Z
Merge branch 'master' into ignite-1678
commit 7d1cf05c37867aab1a6496a97cf6ffc4727c8501
Author: Dmitriy Govorukhin <dm...@...>
Date: 2018-08-28T19:14:35Z
IGNITE-1678 add benchmarks
----
> IgniteAtomicSequence: make following reservations in advance
> ------------------------------------------------------------
>
> Key: IGNITE-1678
> URL: https://issues.apache.org/jira/browse/IGNITE-1678
> Project: Ignite
> Issue Type: Improvement
> Components: data structures
> Affects Versions: ignite-1.4
> Reporter: Denis Magda
> Assignee: Dmitriy Govorukhin
> Priority: Major
> Fix For: 2.7
>
> Attachments: Screenshot from 2016-12-15 10-50-22.png
>
>
> In current implementation a new reservation is made when the current local sequence boundary is exceeded.
> In cases when there are many nodes that use the same atomic sequence there can be a situation when all the nodes start doing a new reservation at the same time. This can lead to performance drops.
> As a performance optimization it makes sense to start reserving new sequence slot in advance (in background), like when around 80% of current reservation has already been used. Probably we should add a special parameter to {{AtomicConfiguration}} that will manage such behavior.
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