MemorySegment off-heap usage and GC

Johannes Lichtenberger lichtenberger.johannes at gmail.com
Mon Sep 16 20:40:04 UTC 2024


It stays at 4Gb max (I've configured 8Gb max, so this should be OK, but
always Evacuation Failure GCs). Currently I don't have the energy to look
further into it due to a cold, but I could upload the 3,8Gb JSON file
somewhere if needed for the test to run, if that helps...

Am Mo., 16. Sept. 2024 um 19:03 Uhr schrieb Maurizio Cimadamore <
maurizio.cimadamore at oracle.com>:

>
> On 16/09/2024 17:49, Johannes Lichtenberger wrote:
> > but I thought it shouldn't be that runtime for shredding a resource
> > (impirting JSON data) suddenly is 3x worse even now in the middle of a
> > bigger refactoring in my spare time
>
> Ok, so there's a new bullet:
>
> * the _execution time_ (e.g. throughput) with the memory segment version
> is now 3x slower than w/o memory segment
>
> What does the memory usage look like? I understand that you see issues
> with GC failures due to "pinning" - but does the overall heap usage seem
> ok? Or has heap usage also increased?
>
> Maurizio
>
>
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