Thank you very much for your quick responding, Yang, it helps a lot.
On Wednesday, April 5, 2017 at 3:08:09 PM UTC+8, Yang Guo wrote: > > That makes sense. Bytecode arrays are generally smaller than code objects, > and do not require iterating the reloc info. Other than that I would not > have jumped to the conclusion that Ignition helps code cache though. > > Cheers, > > Yang > > On Wed, Apr 5, 2017 at 9:01 AM 'Ross McIlroy' via v8-dev < > [email protected] <javascript:>> wrote: > >> We do notice some reductions in time spent both serializing code into the >> cache and deserializing it out with Ignition + Turbofan in our A/B testing >> in the wild due to the smaller size of Ignition's bytecode compared to >> machine code. >> >> Cheers >> Ross >> >> On 5 Apr 2017 06:35, "Yang Guo" <[email protected] <javascript:>> >> wrote: >> >>> Not sure why you conclude that code caching is going to benefit from >>> this. Code caching really just helps you bypass compiling. What test >>> results are you looking for? >>> >>> >>> On Wed, Apr 5, 2017 at 7:08 AM 阿炳 <[email protected] <javascript:>> >>> wrote: >>> >>>> Great. So I think the code cache of new architecture will have some >>>> performance profits, are there any test results? >>>> >>>> >>>> On Wednesday, April 5, 2017 at 12:57:18 PM UTC+8, Yang Guo wrote: >>>> >>>>> 1. two. Ignition and TurboFan >>>>> 2. yes. >>>>> >>>>> Cheers, >>>>> >>>>> Yang >>>>> >>>>> On Wed, Apr 5, 2017, 06:34 阿炳 <[email protected]> wrote: >>>>> >>>> Great news. >>>>>> >>>>>> I have two questions: >>>>>> 1. We knows JSC have 4 tiers, LLint => Baseline JIT ==> DFG ==> FLT, >>>>>> after v8 shipped new architecture, how many tiers does V8 have? >>>>>> 2. Whether the code cache of new architecture is byte code generated >>>>>> by Ignition? >>>>>> >>>>>> Albert. >>>>>> >>>>>> >>>>>> On Thursday, March 9, 2017 at 9:18:40 PM UTC+8, Michael Hablich wrote: >>>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> We already announced >>>>>>> <https://groups.google.com/d/msg/v8-dev/YXpjhVeHlbI/iiYlrF8vCgAJ> >>>>>>> our plans to switch on V8's new compiler architecture based on >>>>>>> Ignition+TurboFan a few weeks ago. This just happened (CL: V8 repo >>>>>>> <https://chromium.googlesource.com/v8/v8/+/0f716acadaed1d9e194593543dbe1340d600d6fc> >>>>>>> >>>>>>> and Chromium repo >>>>>>> <https://chromium.googlesource.com/chromium/src/+/5e921f820bc0a86566e25b279019ba965535230e> >>>>>>> )! >>>>>>> >>>>>>> This change is currently rolling into Chromium and running through >>>>>>> Chromium's whole test machinery. Rest assured that we already >>>>>>> A/B-tested >>>>>>> the new pipeline extensively on Chromeperf, Clusterfuzz and Chrome >>>>>>> Canary/Dev. We don't anticipate regressions except on some traditional >>>>>>> synthetic JavaScript benchmarks like Octane. >>>>>>> >>>>>>> Nevertheless, if you spot any regressions or failures please block this >>>>>>> rollout tracking bug >>>>>>> <https://bugs.chromium.org/p/chromium/issues/detail?id=698746>. We >>>>>>> will than work on resolving those blockers. >>>>>>> >>>>>>> If you have questions, please do not hesitate to contact me. >>>>>>> >>>>>>> Cheers, >>>>>>> >>>>>>> Michael >>>>>>> >>>>>>> PS: The launch bug is crbug.com/692409 >>>>>>> <https://bugs.chromium.org/p/chromium/issues/detail?id=692409> >>>>>>> PPS: Added on-duty sheriffs to CC. >>>>>>> >>>>>> -- >>>>>> -- >>>>>> v8-dev mailing list >>>>>> >>>>> [email protected] >>>>> >>>>> >>>>>> 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 [email protected]. >>>>> >>>>> >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> -- >>>> -- >>>> v8-dev mailing list >>>> [email protected] <javascript:> >>>> 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 [email protected] <javascript:>. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> -- >>> >>> >>> >>> * • * >>> *Yang Guo** • **Google Germany GmbH* >>> * • *Erika-Mann-Str. 33 >>> * • *80636 Munich >>> >>> • [email protected] <javascript:> >>> >>> >>> Geschäftsführer: Matthew Scott Sucherman, Paul Terence Manicle >>> >>> Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: >>> Hamburg >>> >>> Diese E-Mail ist vertraulich. Wenn Sie nicht der richtige Adressat sind, >>> leiten Sie diese bitte nicht weiter, informieren Sie den Absender und >>> löschen Sie die E-Mail und alle Anhänge. Vielen Dank. This e-mail is >>> confidential. If you are not the right addressee please do not forward it, >>> please inform the sender, and please erase this e-mail including any >>> attachments. Thanks. >>> >>> -- >>> -- >>> v8-dev mailing list >>> [email protected] <javascript:> >>> 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 [email protected] <javascript:>. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- >> -- >> v8-dev mailing list >> [email protected] <javascript:> >> 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 [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > -- > > > > * • * > *Yang Guo** • **Google Germany GmbH* > * • *Erika-Mann-Str. 33 > * • *80636 Munich > > • [email protected] <javascript:> > > > Geschäftsführer: Matthew Scott Sucherman, Paul Terence Manicle > > Registergericht und -nummer: Hamburg, HRB 86891 Sitz der Gesellschaft: > Hamburg > > Diese E-Mail ist vertraulich. Wenn Sie nicht der richtige Adressat sind, > leiten Sie diese bitte nicht weiter, informieren Sie den Absender und > löschen Sie die E-Mail und alle Anhänge. Vielen Dank. This e-mail is > confidential. If you are not the right addressee please do not forward it, > please inform the sender, and please erase this e-mail including any > attachments. Thanks. > -- -- v8-dev mailing list [email protected] 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
