Do you mean that v8_enable_pointer_compression = *false* and v8_enable_31bit_smis_on_64bit_arch = *true* "yielded a V8 build that broke a majority of our test suite, including this memory leak test"? If that's the case, this is not a pointer compression failure.
Pointer Compression needs 31 bit smis, but 31 bit smis doesn't need Pointer Compression. On Fri, Feb 14, 2020 at 2:29 PM <clearscript...@gmail.com> wrote: > That particular combination yielded a V8 build that broke a majority of > our test suite, including this memory leak test. > > We didn't spend much time investigating, but the build utterly broke > interception (e.g., bad data in FunctionCallbackInfo), so we abandoned it. > > On Friday, February 14, 2020 at 5:13:35 AM UTC-5, Santiago Aboy Solanes > 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: >> >>> +Ulan Degenbaev +Igor Sheludko >>> >>> 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! >>>> >>>> -- >>>> -- >>>> v8-dev mailing list >>>> v8-...@googlegroups.com >>>> http://groups.google.com/group/v8-dev >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "v8-dev" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to v8-...@googlegroups.com. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/v8-dev/6325eb1a-2a8e-431d-a7ee-5e7f0a41f046%40googlegroups.com >>>> <https://groups.google.com/d/msgid/v8-dev/6325eb1a-2a8e-431d-a7ee-5e7f0a41f046%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >>> -- >>> v8-dev mailing list >>> v8-...@googlegroups.com >>> http://groups.google.com/group/v8-dev >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "v8-dev" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to v8-...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/v8-dev/CAFSTc_iWyBOpP5xEEM6EZk_pLZhyeGoK0WrgM-L8M9%3D6xenyUQ%40mail.gmail.com >>> <https://groups.google.com/d/msgid/v8-dev/CAFSTc_iWyBOpP5xEEM6EZk_pLZhyeGoK0WrgM-L8M9%3D6xenyUQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-dev/2388a332-c093-4d27-9c4b-67bd21a07064%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/2388a332-c093-4d27-9c4b-67bd21a07064%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-dev+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-dev/CAFKEYJgy5U7vWxWNTL%3DrCnPxOsW83eMWHahVqt5_CzhE8ur7rA%40mail.gmail.com.
