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gc performance tweaks #4400

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Merged
merged 2 commits into from
Oct 25, 2024
Merged

gc performance tweaks #4400

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84b9ec3
runtime: bump markStackSize
dgryski Aug 8, 2024
2155439
builder: bump sizes
dgryski Oct 24, 2024
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2 changes: 1 addition & 1 deletion builder/sizes_test.go
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Expand Up @@ -41,7 +41,7 @@ func TestBinarySize(t *testing.T) {
// This is a small number of very diverse targets that we want to test.
tests := []sizeTest{
// microcontrollers
{"hifive1b", "examples/echo", 4560, 280, 0, 2268},
{"hifive1b", "examples/echo", 4568, 280, 0, 2268},
{"microbit", "examples/serial", 2868, 388, 8, 2272},
{"wioterminal", "examples/pininterrupt", 6104, 1484, 116, 6832},

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2 changes: 1 addition & 1 deletion src/runtime/gc_blocks.go
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Expand Up @@ -45,7 +45,7 @@ const (
bytesPerBlock = wordsPerBlock * unsafe.Sizeof(heapStart)
stateBits = 2 // how many bits a block state takes (see blockState type)
blocksPerStateByte = 8 / stateBits
markStackSize = 4 * unsafe.Sizeof((*int)(nil)) // number of to-be-marked blocks to queue before forcing a rescan
markStackSize = 8 * unsafe.Sizeof((*int)(nil)) // number of to-be-marked blocks to queue before forcing a rescan
)

var (
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