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runtime: bump markStackSize

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Every time we overflow the stack, we have to do a full rescan of the heap.  Making this larger
means fewer overflows and thus fewer secondary+ heap scans.
This commit is contained in:
Damian Gryski
2024-10-25 07:24:01 -07:00
committed by GitHub
parent b8420e78bb
commit 9a6397b325
2 changed files with 2 additions and 2 deletions
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builder/sizes_test.go
+1 -1
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@@ -41,7 +41,7 @@ func TestBinarySize(t *testing.T) {
// This is a small number of very diverse targets that we want to test. // This is a small number of very diverse targets that we want to test.
tests := []sizeTest{ tests := []sizeTest{
// microcontrollers // microcontrollers
{"hifive1b", "examples/echo", 4560, 280, 0, 2268}, {"hifive1b", "examples/echo", 4568, 280, 0, 2268},
{"microbit", "examples/serial", 2868, 388, 8, 2272}, {"microbit", "examples/serial", 2868, 388, 8, 2272},
{"wioterminal", "examples/pininterrupt", 6104, 1484, 116, 6832}, {"wioterminal", "examples/pininterrupt", 6104, 1484, 116, 6832},
src/runtime/gc_blocks.go
+1 -1
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@@ -45,7 +45,7 @@ const (
bytesPerBlock = wordsPerBlock * unsafe.Sizeof(heapStart) bytesPerBlock = wordsPerBlock * unsafe.Sizeof(heapStart)
stateBits = 2 // how many bits a block state takes (see blockState type) stateBits = 2 // how many bits a block state takes (see blockState type)
blocksPerStateByte = 8 / stateBits 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 ( var (