tcmalloc - Branch - vercel/next.js

[turbopack] optimize the TurboMalloc threadlocals

#80265Merged

Comparing

tcmalloc

(

9fc1cd1

) with

canary

(

1d70e57

)

+16%

Improvements: 1

Regressions: 2

Untouched: 12

Benchmarks

Failed

rcstr!/large

turbopack/crates/turbo-rcstr/benches/mod.rs::benches::bench_construct::Rcstr::construct

Regression

-7%

396.7 ns425.8 ns

from/small

turbopack/crates/turbo-rcstr/benches/mod.rs::benches::bench_construct::Rcstr::construct

Regression

-6%

438.3 ns467.5 ns

Improved

rcstr!/small

turbopack/crates/turbo-rcstr/benches/mod.rs::benches::bench_construct::Rcstr::construct

+16%

211.9 ns182.8 ns

Passed

build[date-fns-single]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

+1%

1.6 s1.6 s

build[framer-motion-single]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

2.6 s2.6 s

map[cloned]

turbopack/crates/turbo-rcstr/benches/mod.rs::benches::bench_map::RcStr

98.9 µs98.9 µs

build[lucide-react-single]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

1 s1 s

from/large

turbopack/crates/turbo-rcstr/benches/mod.rs::benches::bench_construct::Rcstr::construct

2 µs2 µs

map[unique]

turbopack/crates/turbo-rcstr/benches/mod.rs::benches::bench_map::RcStr

32.7 µs32.7 µs

build[joy]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

2.5 s2.5 s

build[date-fns-all]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

2.7 s2.7 s

build[shiki]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

6.2 s6.2 s

build[lucide-react-all]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

12 s12 s

build[framer-motion-all]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

3.8 s3.8 s

build[mui]

turbopack/crates/turbopack-cli/benches/small_apps.rs::benches::bench_small_apps::turbopack/build/apps

3.7 s3.8 s

Commits

Click on a commit to change the comparison range

Base

canary

1d70e57

+15.96%

[turbopack] optimize the TurboMalloc threadlocals By declaring our initializer as `const {..}` we can leverage the experimental `#[thread_local]` attribute which delgates to `llvms` `threadlocal` implementation. This can improve performance on supported platforms.

9fc1cd1

6 months ago

by lukesandberg

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