[jira] Issue Comment Edited: (CXF-2544) Performance degradation in attachment logic in CXF 2.2.4

["aaron pieper (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CXF-2544?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12778649#action_12778649 ] 

aaron pieper edited comment on CXF-2544 at 11/16/09 11:29 PM:
--------------------------------------------------------------

This is a test case which demonstrates the performance degradation. It needs apache commons-io.jar on the classpath, for IOUtils.copy().

CXF v2.2.4 produces the following output:
8,193.82 kb file created: C:\DOCUME~1\piepera\LOCALS~1\Temp\cxf.CxfBug18256
9.75 seconds
Done.

CXF 2.2.2 produces the following output:
8,193.82 kb file created: C:\DOCUME~1\piepera\LOCALS~1\Temp\cxf.CxfBug19656
1.078 seconds
Done.

      was (Author: piepera):
    This is a test case which demonstrates the performance degradation. It needs apache commons-io.jar on the classpath, for IOUtils.copy(). File.

Executing this test case results in the following output, in CXF v2.2.4:
8,193.82 kb file created: C:\DOCUME~1\piepera\LOCALS~1\Temp\cxf.CxfBug18256
9.75 seconds
Done.

CXF 2.2.2 produces the following output:
8,193.82 kb file created: C:\DOCUME~1\piepera\LOCALS~1\Temp\cxf.CxfBug19656
1.078 seconds
Done.
  
> Performance degradation in attachment logic in CXF 2.2.4
> --------------------------------------------------------
>
>                 Key: CXF-2544
>                 URL: https://issues.apache.org/jira/browse/CXF-2544
>             Project: CXF
>          Issue Type: Bug
>    Affects Versions: 2.2.4
>            Reporter: aaron pieper
>         Attachments: CxfBug1.java
>
>
> AttachmentDeserializer attaches a DelegatingInputStream to the message, which contains the attachment body. The performance of this InputStream has been significantly degraded from CXF 2.2.2 to CXF 2.2.4. For example, a 55 megabyte file used to take around three seconds to parse - now it takes over one minute.
> I've attached a performance test which demonstrates the issue, using an 8 megabyte file. In CXF v2.2.2, this test takes a fraction of a second to run. In CXF v2.2.4, this test takes about 10 seconds on my machine.
> I tried to track down the cause of the degradation. AttachmentDeserializer  line 206 calls "new InternetHeaders(stream)" which takes a long time to complete. Since CXF v2.2.2 and CXF v2.2.4 use the same version of this InternetHeaders class, I believe it must be a change in the way the stream is being put together.

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