+Ulan Degenbaev <u...@google.com> +Igor Sheludko <ish...@google.com>

On Thu, Feb 13, 2020 at 8:36 PM <clearscript...@gmail.com> wrote:

> Greetings!
>
> Our project is a V8 embedding library for .NET on Windows. We have a test
> that spins up a context, runs SunSpider, and destroys the isolate. We run
> it in a loop to check for memory leaks.
>
> This test showed a dramatic leak with V8 8.0 that wasn't there with 7.9.
> Our tools found nothing suspicious in the managed and native heaps, but the
> process's private memory size kept increasing.
>
> Based on some quick research and a little guesswork, we rebuilt with
> v8_enable_pointer_compression and v8_enable_31bit_smis_on_64bit_arch both
> set to false. To our surprise this completely eliminated the leak!
>
> We'd like to report this issue to the V8 team, but we have no simple
> native repro code. Can someone suggest a way to gather some useful
> diagnostics?
>
> Thanks!
>
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