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  1. Infinispan
  2. ISPN-6580

Hotrod performance regressions after ISPN-5342 ISPN-6545

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    Description

      There were 2 recent regressions in hotrod performance, one between commits dd5501c5e and 628819461 and the second one between 628819461 and db0890270. I didn't look for the exact commits, so the name of the issue might not be 100% exact...
      It is easily reproducable locally with a single server instance, reproducer attached.

      The numbers on my machine:

      Build commit Puts time Gets time
      dd5501c5e 21 74
      628819461 26 102
      db0890270 48 224

      The JFR recordings (attached, captured is only the part of the test with gets) for db0890270 show a lot of time is spent in HotRodDecoder#resetNow(), and also the allocation rate goes from 100MB/s for dd5501c5e to over 1GB/s for db0890270. There are no glaring differences between dd5501c5e and 628819461.

      Attachments

        1. jfr_recordings.zip
          2.38 MB
        2. pom.xml
          1 kB
        3. Reproducer.java
          2 kB

        Issue Links

          is caused by

          Bug - A problem that impairs or prevents the functions of the product. ISPN-6545 Server sending two responses for same Iterator.next request

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed

          Task - Represents a small unit of work that is not end-user facing. ISPN-5342 Refactor Hot Rod server code

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          relates to

          Bug - A problem that impairs or prevents the functions of the product. JDG-298 Hotrod performance regression after ISPN-5342

          • Blocker - To be worked above all other priorities. This term is chosen when the severity of the issue is very high, has no workaround, or the effort for the change is comparatively low. Issues that may be very publicly visible and could generate significant media attention may also drive a higher priority.
          • Closed

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            People

              wburns@redhat.com Will Burns
              jmarkos Jakub Markos (Inactive)
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                Created:
                Updated:
                Resolved: