Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8317453

NMT: Performance benchmarks are needed to measure speed and memory

XMLWordPrintable

    • Icon: Enhancement Enhancement
    • Resolution: Unresolved
    • Icon: P4 P4
    • 25
    • None
    • hotspot
    • Fix Understood

      In JDK-8314438 we have a very nice synthetic benchmark that can be used to measure speed performance of unsafe malloc.

      However, we need a benchmark that measures the memory used by NMT as well, and for that we need to drop into native code on the VM level.

      I propose a mechanism to record all the NMT requests to allocate the memory, which can be later used to "replay" it to measure performance that is as close to the real thing as possible - see the "NMTBenchmark design document.pages.pdf" for more details.

        1. NMTBenchmark design document.pages.pdf
          92 kB
        2. output.txt
          5 kB
        1.
        		 Need tool to process the results and present data in a human readable form. Sub-task Open Gerard Ziemski  

            gziemski Gerard Ziemski
            gziemski Gerard Ziemski
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

              Created:
              Updated: