beeef0d8f0
When we used the tasks API, we distributed the compilation deadlines such that different tasks would finish (and publish) at slightly different times. When moving to the jobs API, this feature was lost, and all tasks now only publish once all compilation is done. This creates major contention and synchronization overhead after compilation, which can take roughly as long as the actual concurrent compilation. This CL reintroduces a mechanism for ensuring regular publishing. We choose a limit which is high enough to ensure that we don't publish too often (because that comes with overhead), but low enough to ensure that not too many units are published at the end, when all compilation is done. At that point, there will still be some contention. Also, choose a slightly different limit per task to ensure proper distribution of publishing over time (different tasks are likely to publish at different times). This removes the last remaining regressions when compiling big modules via the jobs API. In local measurements, it makes us even faster than with the tasks API. R=ahaas@chromium.org Bug: chromium:1101340, chromium:1113234 Change-Id: I504f32606b8ad31a951449709cf407c471fa9b25 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2375196 Reviewed-by: Andreas Haas <ahaas@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#69566} |
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| CODE_OF_CONDUCT.md | ||
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| LICENSE.strongtalk | ||
| LICENSE.v8 | ||
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| README.md | ||
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V8 JavaScript Engine
V8 is Google's open source JavaScript engine.
V8 implements ECMAScript as specified in ECMA-262.
V8 is written in C++ and is used in Google Chrome, the open source browser from Google.
V8 can run standalone, or can be embedded into any C++ application.
V8 Project page: https://v8.dev/docs
Getting the Code
Checkout depot tools, and run
fetch v8
This will checkout V8 into the directory v8 and fetch all of its dependencies.
To stay up to date, run
git pull origin
gclient sync
For fetching all branches, add the following into your remote
configuration in .git/config:
fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
fetch = +refs/tags/*:refs/tags/*
Contributing
Please follow the instructions mentioned at v8.dev/docs/contribute.