[Mesa-dev] [PATCH] radv: adjust the CmdUpdateBuffer threshold for optimal performance
Samuel Pitoiset
samuel.pitoiset at gmail.com
Wed Sep 26 09:10:58 UTC 2018
According to my benchmark results, it appears that we should
reduce the threshold to 1024.
BEFORE:
1 KB: 68.656000 ms
2 KB: 118.368000 ms
AFTER:
1 KB: 31.760000 ms
2 KB: 29.840000 ms
Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
src/amd/vulkan/radv_meta_buffer.c | 2 +-
src/amd/vulkan/radv_private.h | 2 ++
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/amd/vulkan/radv_meta_buffer.c b/src/amd/vulkan/radv_meta_buffer.c
index f1887e3318..8726d36f5f 100644
--- a/src/amd/vulkan/radv_meta_buffer.c
+++ b/src/amd/vulkan/radv_meta_buffer.c
@@ -513,7 +513,7 @@ void radv_CmdUpdateBuffer(
if (!dataSize)
return;
- if (dataSize < RADV_BUFFER_OPS_CS_THRESHOLD) {
+ if (dataSize < RADV_BUFFER_UPDATE_THRESHOLD) {
si_emit_cache_flush(cmd_buffer);
radv_cs_add_buffer(cmd_buffer->device->ws, cmd_buffer->cs, dst_buffer->bo);
diff --git a/src/amd/vulkan/radv_private.h b/src/amd/vulkan/radv_private.h
index a649835959..15a66bdc1b 100644
--- a/src/amd/vulkan/radv_private.h
+++ b/src/amd/vulkan/radv_private.h
@@ -108,6 +108,8 @@ typedef uint32_t xcb_window_t;
*/
#define RADV_BUFFER_OPS_CS_THRESHOLD 4096
+#define RADV_BUFFER_UPDATE_THRESHOLD 1024
+
enum radv_mem_heap {
RADV_MEM_HEAP_VRAM,
RADV_MEM_HEAP_VRAM_CPU_ACCESS,
--
2.19.0
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