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| author | Russ Cox <rsc@golang.org> | 2010-09-07 09:57:22 -0400 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2010-09-07 09:57:22 -0400 |
| commit | d4cc557b0d61ac02d0ff153ecd643867e803ed1f (patch) | |
| tree | c8301a638fd5010bb90b6a6d415ec371c74ba3ce /src/pkg/runtime/debug.go | |
| parent | 6f5f558c101a5948f1d90007fe93159804743bb6 (diff) | |
| download | go-d4cc557b0d61ac02d0ff153ecd643867e803ed1f.tar.xz | |
runtime: use manual stack for garbage collection
Old code was using recursion to traverse object graph.
New code uses an explicit stack, cutting the per-pointer
footprint to two words during the recursion and avoiding
the standard allocator and stack splitting code.
in test/garbage:
Reduces parser runtime by 2-3%
Reduces Peano runtime by 40%
Increases tree runtime by 4-5%
R=r
CC=golang-dev
https://golang.org/cl/2150042
Diffstat (limited to 'src/pkg/runtime/debug.go')
| -rw-r--r-- | src/pkg/runtime/debug.go | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/pkg/runtime/debug.go b/src/pkg/runtime/debug.go index b65cc66933..b5f6571faa 100644 --- a/src/pkg/runtime/debug.go +++ b/src/pkg/runtime/debug.go @@ -36,10 +36,11 @@ type MemStatsType struct { Mallocs uint64 // number of mallocs // Main allocation heap statistics. - HeapAlloc uint64 // bytes allocated and still in use - HeapSys uint64 // bytes obtained from system - HeapIdle uint64 // bytes in idle spans - HeapInuse uint64 // bytes in non-idle span + HeapAlloc uint64 // bytes allocated and still in use + HeapSys uint64 // bytes obtained from system + HeapIdle uint64 // bytes in idle spans + HeapInuse uint64 // bytes in non-idle span + HeapObjects uint64 // total number of allocated objects // Low-level fixed-size structure allocator statistics. // Inuse is bytes used now. |