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Quick question: Have you tried with v8_enable_pointer_compression = false and v8_enable_31bit_smis_on_64bit_arch = true?
On Fri, Feb 14, 2020 at 7:54 AM Yang Guo <yan...@chromium.org> wrote:
On Thu, Feb 13, 2020 at 8:36 PM <clearsc...@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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Could you please open an issue here: https://bugs.chromium.org/p/v8/issues/And yet another suggestion. Could you please try it again on today's tip of tree V8 (say 96f6ac9bc6646ae12acad43a1f9ebdaaf7ceea0a)?Does your memory leak tool give any hints about the source of the memory leak?How much memory is leaked after 1 iteration?
On Fri, Feb 14, 2020 at 11:13 AM Santiago Aboy Solanes <sol...@google.com> wrote:
Quick question: Have you tried with v8_enable_pointer_compression = false and v8_enable_31bit_smis_on_64bit_arch = true?
On Fri, Feb 14, 2020 at 7:54 AM Yang Guo <yan...@chromium.org> wrote:
On Thu, Feb 13, 2020 at 8:36 PM <clearsc...@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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