Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/gc_implementation/shared/parGCAllocBuffer.cpp
src/share/vm/gc_implementation/shared/parGCAllocBuffer.cpp
- changeset 4130
- 2e6857353b2c
- parent 4067
- b2ef234911c9
- child 6376
- cfd4aac53239
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| 4129:22b8d3d181d9 | 4130:2e6857353b2c |
|---|---|
| 85 } | 85 } |
| 86 | 86 |
| 87 // Compute desired plab size and latch result for later | 87 // Compute desired plab size and latch result for later |
| 88 // use. This should be called once at the end of parallel | 88 // use. This should be called once at the end of parallel |
| 89 // scavenge; it clears the sensor accumulators. | 89 // scavenge; it clears the sensor accumulators. |
| 90 void PLABStats::adjust_desired_plab_sz() { | 90 void PLABStats::adjust_desired_plab_sz(uint no_of_gc_workers) { |
| 91 assert(ResizePLAB, "Not set"); | 91 assert(ResizePLAB, "Not set"); |
| 92 if (_allocated == 0) { | 92 if (_allocated == 0) { |
| 93 assert(_unused == 0, | 93 assert(_unused == 0, |
| 94 err_msg("Inconsistency in PLAB stats: " | 94 err_msg("Inconsistency in PLAB stats: " |
| 95 "_allocated: "SIZE_FORMAT", " | 95 "_allocated: "SIZE_FORMAT", " |
| 105 TargetPLABWastePct); | 105 TargetPLABWastePct); |
| 106 if (target_refills == 0) { | 106 if (target_refills == 0) { |
| 107 target_refills = 1; | 107 target_refills = 1; |
| 108 } | 108 } |
| 109 _used = _allocated - _wasted - _unused; | 109 _used = _allocated - _wasted - _unused; |
| 110 size_t plab_sz = _used/(target_refills*ParallelGCThreads); | 110 size_t plab_sz = _used/(target_refills*no_of_gc_workers); |
| 111 if (PrintPLAB) gclog_or_tty->print(" (plab_sz = %d ", plab_sz); | 111 if (PrintPLAB) gclog_or_tty->print(" (plab_sz = %d ", plab_sz); |
| 112 // Take historical weighted average | 112 // Take historical weighted average |
| 113 _filter.sample(plab_sz); | 113 _filter.sample(plab_sz); |
| 114 // Clip from above and below, and align to object boundary | 114 // Clip from above and below, and align to object boundary |
| 115 plab_sz = MAX2(min_size(), (size_t)_filter.average()); | 115 plab_sz = MAX2(min_size(), (size_t)_filter.average()); |
