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Buffer Cache: Tune to the levels of the new GC.

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This commit is contained in:
Fernando Sahmkow 2022-01-16 05:05:34 +01:00
parent ecb3342145
commit 5e982a7812
6 changed files with 78 additions and 6 deletions
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34
src/video_core/buffer_cache/buffer_cache.h
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@ -76,8 +76,9 @@ class BufferCache {
static constexpr BufferId NULL_BUFFER_ID{0};
static constexpr u64 EXPECTED_MEMORY = 512_MiB;
static constexpr u64 CRITICAL_MEMORY = 1_GiB;
static constexpr s64 DEFAULT_EXPECTED_MEMORY = 512_MiB;
static constexpr s64 DEFAULT_CRITICAL_MEMORY = 1_GiB;
static constexpr s64 TARGET_THRESHOLD = 4_GiB;
using Maxwell = Tegra::Engines::Maxwell3D::Regs;
@ -436,6 +437,8 @@ private:
Common::LeastRecentlyUsedCache<LRUItemParams> lru_cache;
u64 frame_tick = 0;
u64 total_used_memory = 0;
u64 minimum_memory = 0;
u64 critical_memory = 0;
std::array<BufferId, ((1ULL << 39) >> PAGE_BITS)> page_table;
};
@ -451,11 +454,30 @@ BufferCache<P>::BufferCache(VideoCore::RasterizerInterface& rasterizer_,
// Ensure the first slot is used for the null buffer
void(slot_buffers.insert(runtime, NullBufferParams{}));
common_ranges.clear();
if (!runtime.CanReportMemoryUsage()) {
minimum_memory = DEFAULT_EXPECTED_MEMORY;
critical_memory = DEFAULT_CRITICAL_MEMORY;
return;
}
const s64 device_memory = static_cast<s64>(runtime.GetDeviceLocalMemory());
const s64 min_spacing_expected = device_memory - 1_GiB - 512_MiB;
const s64 min_spacing_critical = device_memory - 1_GiB;
const s64 mem_tresshold = std::min(device_memory, TARGET_THRESHOLD);
const s64 min_vacancy_expected = (6 * mem_tresshold) / 10;
const s64 min_vacancy_critical = (3 * mem_tresshold) / 10;
minimum_memory = static_cast<u64>(
std::max(std::min(device_memory - min_vacancy_expected, min_spacing_expected),
DEFAULT_EXPECTED_MEMORY));
critical_memory = static_cast<u64>(
std::max(std::min(device_memory - min_vacancy_critical, min_spacing_critical),
DEFAULT_CRITICAL_MEMORY));
}
template <class P>
void BufferCache<P>::RunGarbageCollector() {
const bool aggressive_gc = total_used_memory >= CRITICAL_MEMORY;
const bool aggressive_gc = total_used_memory >= critical_memory;
const u64 ticks_to_destroy = aggressive_gc ? 60 : 120;
int num_iterations = aggressive_gc ? 64 : 32;
const auto clean_up = [this, &num_iterations](BufferId buffer_id) {
@ -486,7 +508,11 @@ void BufferCache<P>::TickFrame() {
const bool skip_preferred = hits * 256 < shots * 251;
uniform_buffer_skip_cache_size = skip_preferred ? DEFAULT_SKIP_CACHE_SIZE : 0;
if (total_used_memory >= EXPECTED_MEMORY) {
// If we can obtain the memory info, use it instead of the estimate.
if (runtime.CanReportMemoryUsage()) {
total_used_memory = runtime.GetDeviceMemoryUsage();
}
if (total_used_memory >= minimum_memory) {
RunGarbageCollector();
}
++frame_tick;