Depends on how large your initial heap state is / how expensive it is to set up. +Yang Guo <yang...@chromium.org> may have more details, and I guess you've seen https://v8.dev/blog/custom-startup-snapshots. In any case, your build issues sound solvable (it works with ninja after all), but with a custom environment it may be difficult to get help.
On Wed, Feb 24, 2021 at 4:15 PM Jean-François Dagenais < jeff.dagen...@gmail.com> wrote: > Thanks for your answers guys! So isn't there "major" performance drawbacks > of not using pre-made snapshots ? Especially for an older arm cpu system? > > On Wednesday, February 24, 2021 at 2:47:44 AM UTC-4 Hitoshi Yoshida wrote: > >> cc->bcc: v8-dev@ >> Hi, Jeff, >> >> I'm sorry, I'm not familiar with the non-standard infrastructures ,either. >> (To be honest, it is quite difficult to set up the build configuration >> for v8_context_snapshot_generator in a cross-build environment.) >> >> If it works for you, I recommend to avoid using v8_context_snapshot, with >> setting "use_v8_context_snapshot >> <https://source.chromium.org/chromium/chromium/src/+/master:tools/v8_context_snapshot/v8_context_snapshot.gni>=false" >> in your gn.args. >> Then the action is not invoked, and Chromium should run correctly. Now >> on ChromeOS and Android, Chrome is built in this setting. >> >> >> 2021年2月24日(水) 15:09 Jakob Gruber <jgr...@chromium.org>: >> >>> >>> >>> On Tue, Feb 23, 2021 at 5:04 PM Jean-François Dagenais < >>> jeff.d...@gmail.com> wrote: >>> >>>> Hi all! >>>> >>>> Just so you can adapt your responses (:-) I am a total newb with >>>> chromium and v8. Over the years I have become more of a systems enginee and >>>> have never been a web developer. >>>> >>>> I have spent the last few days getting a build of libcef/chromium >>>> working on buildroot for an arm target (32 bits). FYI, I am not using >>>> depot_tools but a tar.gz and implementing the gclient hooks manually, well >>>> in my libcef.mk recipe file. >>>> >>>> I am instructing chromium's build to use linux:unbundle with >>>> buildroot's target sysroot for the target binaries. But in the spirit of >>>> reducing dependencies towards the build host as well as buildroot, I have >>>> opted to let chromium's build system use the the install-sysroot.py >>>> generated sysroots for arm64 (build host) and i386 (v8 snapshots). This was >>>> just somewhat blindly following the advice of the error message to invoke >>>> install-sysroot --arch=arm64 and i386. >>>> >>>> After having to tweak build/config/linux/pkg_config.gni to provide the >>>> sysroot argument (-s) to pkg-config.py (?? I don't know how this can work >>>> for anyone and why I had to do this.) After a long while, I finally got >>>> binaries. >>>> >>>> However, the v8_context_snapshot_generator I have, which should be able >>>> to run on the build host, doesn't have rpaths to >>>> chromium/build/linux/debian_sid_i386-sysroot/... so the >>>> action("generate_v8_context_snapshot") >>>> from tools/v8_context_snapshot/BUILD.gn fails because it's not finding >>>> libraries. ldd shows it's looking at the host rootfs (/). I can hack things >>>> with LD_LIBRARY_PATH, but again, I'm thinking: How does this even work for >>>> anyone!? >>>> >>> >>> You're on the wrong list, the v8_context_snapshot is part of chromium, >>> not v8. In any case, I'm not sure anyone here will be able to help; we >>> usually use the standard build tools and thus don't run into these kinds of >>> issues. Fwiw, +Hitoshi Yoshida who implemented v8_context_snapshots. >>> >>> >>>> >>>> Thanks for helping me understand what's wrong with my setup. >>>> >>>> -- >>>> -- >>>> 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-dev+un...@googlegroups.com. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/v8-dev/0d39beec-b386-46e0-ae38-134a67b3a0e6n%40googlegroups.com >>>> <https://groups.google.com/d/msgid/v8-dev/0d39beec-b386-46e0-ae38-134a67b3a0e6n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> >> >> -- >> Hitoshi Yoshida (Peria) >> email: pe...@chromium.org >> > -- > -- > 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/cb7965ed-3872-49b0-b6bc-3270db290406n%40googlegroups.com > <https://groups.google.com/d/msgid/v8-dev/cb7965ed-3872-49b0-b6bc-3270db290406n%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. 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