Bugzilla – Full Text Bug Listing
| Summary: | Eliminate jvm activation on AC startup | ||||||||||
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| Product: | z_Archived | Reporter: | Igor Alelekov <igor.alelekov> | ||||||||
| Component: | TPTP | Assignee: | Igor Alelekov <igor.alelekov> | ||||||||
| Status: | CLOSED FIXED | QA Contact: | |||||||||
| Severity: | enhancement | ||||||||||
| Priority: | P3 | CC: | chris.l.elford, guru.nagarajan, jkubasta, kiryl.kazakevich, paulslau | ||||||||
| Version: | unspecified | Keywords: | plan | ||||||||
| Target Milestone: | --- | ||||||||||
| Hardware: | PC | ||||||||||
| OS: | All | ||||||||||
| URL: | http://www.eclipse.org/tptp/groups/Architecture/documents/features/hf_196435.html | ||||||||||
| Whiteboard: | closed460 | ||||||||||
| Attachments: |
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Igor, This is a good one. The lazy initialization of the JVM for the security case is a much needed enh and also enables additional memory for the workbench processing. Suggest setting tags for 4.5 discussion (if it cannot be contained in 4.4.1) Voting +3, hope this will improve AC efficiency. Created attachment 78752 [details]
patch
The patch has been test on Linux and Windows with org.eclipse.hyades.test.execution.local.FileManagerExtendedTest
Created attachment 80661 [details]
Feature Description Document
Note, this enhancement has not been reviewed/approved by the AG for 4.5. Approved by the AG for TPTP 4.5 with the following comments: -Since the file server is a key component of the Agent Controller (e.g. test execution), we need to ensure it is well tested. Can the existing test cases be reused or will you write new test cases? -Will the execution APIs on the client side need to change or will compatibility be preserved by using the same protocol? -Very nice memory improvement. Created attachment 88778 [details]
updated patch
Joanna, the patch is tested and ready to commit. May I commit it right now or wait for the next iteration (i6)? Resolving since the patch is committed into HEAD As of TPTP 4.6.0, TPTP is in maintenance mode and focusing on improving quality by resolving relevant enhancements/defects and increasing test coverage through test creation, automation, Build Verification Tests (BVTs), and expanded run-time execution. As part of the TPTP Bugzilla housecleaning process (see http://wiki.eclipse.org/Bugzilla_Housecleaning_Processes), this enhancement/defect is verified/closed by the Project Lead since the originator of this enhancement/defect has an inactive Bugzilla account and considered to be fixed. If this enhancement/defect is still unresolved and reproducible in the latest TPTP release (http://www.eclipse.org/tptp/home/downloads/), please re-open. |
Currently, with AC startup a JVM is also started in Backward Compatibility Layer to provide file server service for old RAC clients. Measurement of virtual memory on IA-32 machines for the last AC 4.4.0.1 build shows the following numbers: Linux IA-32 Windows IA-32 (1) AC (with JVM started) 358 Mb 250 Mb (2) AC (without JVM) 96 Mb 46 Mb ------------------------------------------------------------------ (3) JVM 260 Mb 204 Mb (4) Possible gain 280 % 440 % (2) was measured with JVM and file service disabled in AC code (3) was calculated as (1) minus (2) (4) was calculated as ((1) devided by (2)) minus 100% To eliminate JVM startup and this unnecessary memory allocation, native AC File Service could be used. It is necessary to extend Backward comp. layer functionality and implement redirection of old file service requests to the native one. If some features in the native file service are absent, they could be implemented as well. So, this enhancement could improve performance and startup time for both AC: standalone and integrated. P.S.: Second service, the JVM is used for, is the security server. It also could be redirected to the native AC security service when it will be implemented (e.g. #195644). Before this, JVM could be started as before when security is enabled.