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Posted to dev@hc.apache.org by "Oleg Kalnichevski (JIRA)" <ji...@apache.org> on 2013/09/23 13:50:05 UTC
[jira] [Moved] (HTTPCLIENT-1402) improve httpcore perfomence and
reduce memory usage
[ https://issues.apache.org/jira/browse/HTTPCLIENT-1402?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Oleg Kalnichevski moved HTTPCORE-350 to HTTPCLIENT-1402:
--------------------------------------------------------
Component/s: (was: HttpCore)
HttpClient
Affects Version/s: (was: 4.2.5)
(was: 4.3)
4.3 Final
Workflow: Default workflow, editable Closed status (was: jira)
Key: HTTPCLIENT-1402 (was: HTTPCORE-350)
Project: HttpComponents HttpClient (was: HttpComponents HttpCore)
> improve httpcore perfomence and reduce memory usage
> ----------------------------------------------------
>
> Key: HTTPCLIENT-1402
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1402
> Project: HttpComponents HttpClient
> Issue Type: Improvement
> Components: HttpClient
> Affects Versions: 4.3 Final
> Environment: all platform
> Reporter: yuexiaojun
> Labels: patch
> Attachments: http-client.patch, image2013-9-15 12-55-55.png, image2013-9-15 12-57-20.png, image2013-9-16 9-49-4.png, loadversion.patch
>
>
> when I new DefaultHttpClient instance without defaultParams and then getParams,It will loadVersionInfo by classloader from jar file everytime,this operation is slowly and unworthy; So I add a hashmap to cache versioninfo at org.apache.http.util.VersionInfo#loadVersionInfo and read the version only first time ;
> test case and result:
> case : create 100000 httpclient objects and recycle memory with Xmx512m Xms512m
> before: bring about 118 younggc and spent 84509ms
> after: bring about 15 younggc and only spent 3352ms
> when physical memory is insufficient ,this issues may cause http response very slowly;
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