ICEfaces
  1. ICEfaces
  2. ICE-9834

Icefaces 3.3 DomResponseWriter.getOldDocument() cosumes too much CPU on partial rendering if DOM compression is enabled

          Details

          • Type: Bug Bug
          • Status: Open
          • Priority: Major Major
          • Resolution: Unresolved
          • Affects Version/s: 3.3
          • Fix Version/s: None
          • Component/s: Framework
          • Labels:
            None
          • Environment:
            CentoOS 5.2, Oracle Java 1.7.0_25
          • Workaround Exists:
            Yes
          • Workaround Description:
            disable DOM compression from web.xml

            Description

            Migrating from 1.8.2 to 3.3 caused degraded performance with high CPU consumption (went more than 95% on 30 concurrent requests). This only happens on partial rendering. GET request is fine. Profiler shows that the DomResponseWriter.getOldDocument() is eating up CPU time. We disabled DOM compression as a temporary solution.

            Here are some numbers (30 sessions with on total 1500 repeat using JMeter)

            With compression enabled :
              * GET Request : ~550ms
              * POST request (partial rendering) : more than 8 seconds

            With compression disabled (POST is still taking more than GET request):
             * GET : 500ms
             * POST : 650ms

            NOTE: testing with few threads does not have this effect. The time for post processing depends on the size of the page and the total number of current requests.

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                People

                • Assignee:
                  Unassigned
                  Reporter:
                  Dipendra Pokhrel
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                  Dates

                  • Created:
                    Updated: