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https://issues.apache.org/jira/browse/IGNITE-4295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15695208#comment-15695208
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ASF GitHub Bot commented on IGNITE-4295:
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GitHub user devozerov opened a pull request:
https://github.com/apache/ignite/pull/1282
IGNITE-4295
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gridgain/apache-ignite ignite-4295
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/ignite/pull/1282.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 #1282
----
commit b038730ee56a662f73e02bbec83eb1712180fa82
Author: isapego <[email protected]>
Date: 2016-11-23T09:05:54Z
IGNITE-4249: ODBC: Fixed performance issue caused by ineddicient IO
handling on CPP side. This closes #1254.
commit 7a47a0185d308cd3a58c7bfcb4d1cd548bff5b87
Author: devozerov <[email protected]>
Date: 2016-11-24T08:14:08Z
IGNITE-4270: Allow GridUnsafe.UNALIGNED flag override.
commit b73fa8c4e9f52e96bd806e1cdbec1bed3623a54f
Author: devozerov <[email protected]>
Date: 2016-11-24T08:53:29Z
IGNITE-4295: Replaced "unsafe" byte[]->byte[] copying with System.arrayCopy.
commit 29a3a4fa12ed7642ec750f339ed36279323931b7
Author: devozerov <[email protected]>
Date: 2016-11-24T09:35:00Z
offheap->heap routine.
commit 3af04bd1326aa08796b9876795c227be25089d9b
Author: devozerov <[email protected]>
Date: 2016-11-24T09:38:52Z
heap->offheap routine.
commit 3539b448aa81dbdd541a5c168826b1806bdfded6
Author: devozerov <[email protected]>
Date: 2016-11-24T10:05:19Z
Added threshold.
commit bdbf64d55d76c91ed214bb34625dad4a10a3453d
Author: devozerov <[email protected]>
Date: 2016-11-24T10:26:22Z
Fix to default value.
----
> GridUnsafe: implement specialized methods for every kind of copy operation.
> ---------------------------------------------------------------------------
>
> Key: IGNITE-4295
> URL: https://issues.apache.org/jira/browse/IGNITE-4295
> Project: Ignite
> Issue Type: Task
> Components: general
> Affects Versions: 1.8
> Reporter: Vladimir Ozerov
> Assignee: Vladimir Ozerov
> Priority: Minor
> Labels: performance
> Fix For: 2.0
>
>
> 1) copy(OFFHEAP, HEAP)
> 2) copy(HEAP, OFFHEAP)
> 3) copy(OFFHEAP, OFFHEAP)
> 4) copy(HEAP, HEAP)
> 5) copy(T[], T[]) must be avoided and replaced with System.arrayCopy().
> 6) Add optional threshold. If we copy too small memory chunk which size is
> below the threshold, then resort to byte-by-byte copying, as it will be
> faster.
> E.g. on PowerPC with OpenJDK 8, copying of <100 bytes of data is faster on
> byte-by-byte basis.
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