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src/hotspot/share/gc/shenandoah/shenandoahMetrics.cpp

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*** 125,179 **** _used_after = _heap->used(); _if_after = ShenandoahMetrics::internal_fragmentation(); _ef_after = ShenandoahMetrics::external_fragmentation(); } ! bool ShenandoahMetricsSnapshot::is_good_progress() { ! // Under the critical threshold? size_t free_actual = _heap->free_set()->available(); size_t free_expected = _heap->max_capacity() / 100 * ShenandoahCriticalFreeThreshold; ! bool prog_free = free_actual >= free_expected; ! log_info(gc, ergo)("%s progress for free space: " SIZE_FORMAT "%s, need " SIZE_FORMAT "%s", ! prog_free ? "Good" : "Bad", ! byte_size_in_proper_unit(free_actual), proper_unit_for_byte_size(free_actual), ! byte_size_in_proper_unit(free_expected), proper_unit_for_byte_size(free_expected)); ! if (!prog_free) { return false; } ! // Freed up enough? size_t progress_actual = (_used_before > _used_after) ? _used_before - _used_after : 0; size_t progress_expected = ShenandoahHeapRegion::region_size_bytes(); ! bool prog_used = progress_actual >= progress_expected; ! log_info(gc, ergo)("%s progress for used space: " SIZE_FORMAT "%s, need " SIZE_FORMAT "%s", ! prog_used ? "Good" : "Bad", ! byte_size_in_proper_unit(progress_actual), proper_unit_for_byte_size(progress_actual), ! byte_size_in_proper_unit(progress_expected), proper_unit_for_byte_size(progress_expected)); ! if (prog_used) { return true; } ! // Internal fragmentation is down? double if_actual = _if_before - _if_after; double if_expected = 0.01; // 1% should be enough ! bool prog_if = if_actual >= if_expected; ! log_info(gc, ergo)("%s progress for internal fragmentation: %.1f%%, need %.1f%%", ! prog_if ? "Good" : "Bad", ! if_actual * 100, if_expected * 100); ! if (prog_if) { return true; } ! // External fragmentation is down? double ef_actual = _ef_before - _ef_after; double ef_expected = 0.01; // 1% should be enough ! bool prog_ef = ef_actual >= ef_expected; ! log_info(gc, ergo)("%s progress for external fragmentation: %.1f%%, need %.1f%%", ! prog_ef ? "Good" : "Bad", ! ef_actual * 100, ef_expected * 100); ! if (prog_ef) { return true; } // Nothing good had happened. return false; } --- 125,175 ---- _used_after = _heap->used(); _if_after = ShenandoahMetrics::internal_fragmentation(); _ef_after = ShenandoahMetrics::external_fragmentation(); } ! void ShenandoahMetricsSnapshot::print() { ! log_info(gc, ergo)("Used: before: " SIZE_FORMAT "M, after: " SIZE_FORMAT "M", _used_before/M, _used_after/M); ! log_info(gc, ergo)("Internal frag: before: %.1f%%, after: %.1f%%", _if_before * 100, _if_after * 100); ! log_info(gc, ergo)("External frag: before: %.1f%%, after: %.1f%%", _ef_before * 100, _ef_after * 100); ! } ! ! bool ShenandoahMetricsSnapshot::is_good_progress(const char *label) { ! // Under the critical threshold? Declare failure. size_t free_actual = _heap->free_set()->available(); size_t free_expected = _heap->max_capacity() / 100 * ShenandoahCriticalFreeThreshold; ! if (free_actual < free_expected) { ! log_info(gc, ergo)("Not enough free space (" SIZE_FORMAT "M, need " SIZE_FORMAT "M) after %s", ! free_actual / M, free_expected / M, label); return false; } ! // Freed up enough? Good! Declare victory. size_t progress_actual = (_used_before > _used_after) ? _used_before - _used_after : 0; size_t progress_expected = ShenandoahHeapRegion::region_size_bytes(); ! if (progress_actual >= progress_expected) { return true; } + log_info(gc,ergo)("Not enough progress (" SIZE_FORMAT "M, need " SIZE_FORMAT "M) after %s", + progress_actual / M, progress_expected / M, label); ! // Internal fragmentation is down? Good! Declare victory. double if_actual = _if_before - _if_after; double if_expected = 0.01; // 1% should be enough ! if (if_actual > if_expected) { return true; } + log_info(gc,ergo)("Not enough internal fragmentation improvement (%.1f%%, need %.1f%%) after %s", + if_actual * 100, if_expected * 100, label); ! // External fragmentation is down? Good! Declare victory. double ef_actual = _ef_before - _ef_after; double ef_expected = 0.01; // 1% should be enough ! if (ef_actual > ef_expected) { return true; } + log_info(gc,ergo)("Not enough external fragmentation improvement (%.1f%%, need %.1f%%) after %s", + if_actual * 100, if_expected * 100, label); // Nothing good had happened. return false; }
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