On Tue, 11 Jan 2022 at 15:25, MG <martin.guil...@akylas.fr> wrote: > Thanks Camillo for taking the time to answer this > > Very interesting to know you follow this too and knowing you expect a 10% > increase per year is a good indicator for to see what s happening. > > First to put this into context. I am part of the Nativescript > <https://nativescript.org/> community. We are using v8 as a Javascript > engine for cross platform mobile applications. > > We compile v8 then we compile a .so lib which is used inside apps. > That so lib went from 14.2Mb with v8 8.3 to 17.6Mb with v8 9.7 > Which means 20% increase i a year and an half. We are not so far from what > you explain. > > Now maybe you can help us see if we build optimized enough builds of v8. > When building v8 we actually build only `v8_compiler > v8_base_without_compiler v8_libplatform v8_snapshot v8_libbase v8_bigint > torque_generated_initializers torque_generated_definitions` Then we > create our v8 lib with all the .o of those modules. > Here is the build script > <https://github.com/NativeScript/android-v8/blob/master/scripts/build.android.sh> > we use > Here are the build flags we use > `use_goma=false is_clang=true enable_resource_allowlist_generation=false > is_component_build=true v8_use_external_startup_data=false > is_official_build=true use_thin_lto=false is_debug=false symbol_level=0 > v8_enable_i18n_support=false > target_os=\"android\" v8_android_log_stdout=false use_custom_libcxx=true > cc_wrapper=\"ccache\"` > > Do you think we could improve it in any way? is there any .o we can filter > from those modules? >
If you're willing to hack a bit more: - Disable "v8_enable_runtime_call_stats = false" (this has changed recently on the main branch and it's disabled by default) (~250 KB) - Disable webassembly if you're certain you don't need it: "v8_enable_webassembly = false" (~0.9Mb) More hacky things: - Strip away all builtins in runtime-test.cc (~70KB) - Remove debugger support (~150KB) - Don't ship profiler / inspector if not needed (currently there is no flag for this) (~0.5Mb) On Tuesday, January 11, 2022 at 3:05:05 PM UTC+1 cbr...@chromium.org wrote: > >> Hi, >> >> Yes binary size is a concern on our end as well (for instance shipping >> chrome on android). >> Looking at our own numbers we see roughly a 10% increase per year, partly >> due to optimisations and partly due to new features being added to the >> language. >> >> You could potentially disable parts of V8 and save on binary size, >> typically they revolve around profiling and debugging. >> That might work if you have minimal release builds, where let's say you >> disable the profiler and the inspector (or even certain web-features like >> wasm). >> >> In short, there is no easy way to greatly reduce binary size >> without sacrificing features at the moment. >> >> cheers, >> Camillo >> >> On Tue, 21 Dec 2021 at 10:22, MG <martin....@akylas.fr> wrote: >> >>> We have been building v8 for android since 8.3. We use `is_component_build` >>> to only add in our lib the modules we need for our engine (i am talking >>> about the engine behind Nativescript <https://nativescript.org/> ) In >>> 8.3 the resulting libv8 was 50Mb. In 9.3 it went to 66.3Mb and now in 9.7 >>> we are at 68.2Mb It is a bit worrying to see such a lib size increase over >>> that period. >>> Wondering if we could get some understanding of this, and maybe some >>> advices on how to keep it "small" >>> >>> -- >>> -- >>> v8-users mailing list >>> v8-u...@googlegroups.com >>> http://groups.google.com/group/v8-users >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "v8-users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to v8-users+u...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/v8-users/aca44c98-f816-4a2b-9502-7a7d64dfd3fcn%40googlegroups.com >>> <https://groups.google.com/d/msgid/v8-users/aca44c98-f816-4a2b-9502-7a7d64dfd3fcn%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > -- > v8-users mailing list > v8-users@googlegroups.com > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/v8-users/2719307b-a1d8-44b0-bcc6-612edc565f96n%40googlegroups.com > <https://groups.google.com/d/msgid/v8-users/2719307b-a1d8-44b0-bcc6-612edc565f96n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > Camillo Bruni | Software Engineer, V8 | Google Germany GmbH | Erika-Mann Str. 33, 80636 München Registergericht und -nummer: Hamburg, HRB 86891 | Sitz der Gesellschaft: Hamburg | Geschäftsführer: Paul Manicle, Halimah DeLaine Prado Diese E-Mail ist vertraulich. Falls Ssie diese fälschlicherweise erhalten haben sollten, leiten Sie diese bitte nicht an jemand anderes weiter, löschen Sie alle Kopien und Anhänge davon und lassen Sie mich bitte wissen, dass die E-Mail an die falsche Person gesendet wurde. This e-mail is confidential. If you received this communication by mistake, please don't forward it to anyone else, please erase all copies and attachments, and please let me know that it has gone to the wrong person. -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/v8-users/CAOeS1i-NgFVEzvcu-tXALMZLUNLnsY3M2oy8afQV1f9bGqbiog%40mail.gmail.com.
