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i965: Add perf debug for stalls during shader compiles.

Browse source 
v2: fix bad comment from before I gave up and decided to just use doubles.

Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2012-08-07 10:05:38 -07:00
parent 97a5f0ff2e
commit 006c1a3c65
4 changed files with 45 additions and 2 deletions
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13
src/mesa/drivers/dri/i965/brw_fs.cpp
View file

@ -2062,10 +2062,18 @@ brw_wm_fs_emit(struct brw_context *brw, struct brw_wm_compile *c,
struct gl_shader_program *prog)
{
struct intel_context *intel = &brw->intel;
bool start_busy = false;
float start_time = 0;
if (!prog)
return false;
if (unlikely(INTEL_DEBUG & DEBUG_PERF)) {
start_busy = (intel->batch.last_bo &&
drm_intel_bo_busy(intel->batch.last_bo));
start_time = get_time();
}
struct brw_shader *shader =
(brw_shader *) prog->_LinkedShaders[MESA_SHADER_FRAGMENT];
if (!shader)
@ -2108,6 +2116,11 @@ brw_wm_fs_emit(struct brw_context *brw, struct brw_wm_compile *c,
if (shader->compiled_once)
brw_wm_debug_recompile(brw, prog, &c->key);
shader->compiled_once = true;
if (start_busy && !drm_intel_bo_busy(intel->batch.last_bo)) {
perf_debug("FS compile took %.03f ms and stalled the GPU\n",
(get_time() - start_time) / 1000);
}
}
return true;

20
src/mesa/drivers/dri/i965/brw_vec4_emit.cpp
View file

@ -1023,9 +1023,19 @@ extern "C" {
bool
brw_vs_emit(struct gl_shader_program *prog, struct brw_vs_compile *c)
{
struct intel_context *intel = &c->func.brw->intel;
bool start_busy = false;
float start_time = 0;
if (!prog)
return false;
if (unlikely(INTEL_DEBUG & DEBUG_PERF)) {
start_busy = (intel->batch.last_bo &&
drm_intel_bo_busy(intel->batch.last_bo));
start_time = get_time();
}
struct brw_shader *shader =
(brw_shader *) prog->_LinkedShaders[MESA_SHADER_VERTEX];
if (!shader)
@ -1037,8 +1047,14 @@ brw_vs_emit(struct gl_shader_program *prog, struct brw_vs_compile *c)
printf("\n\n");
}
if (shader->compiled_once) {
perf_debug("Recompiling vertex shader for program %d\n", prog->Name);
if (unlikely(INTEL_DEBUG & DEBUG_PERF)) {
if (shader->compiled_once) {
perf_debug("Recompiling vertex shader for program %d\n", prog->Name);
}
if (start_busy && !drm_intel_bo_busy(intel->batch.last_bo)) {
perf_debug("VS compile took %.03f ms and stalled the GPU\n",
(get_time() - start_time) / 1000);
}
}
vec4_visitor v(c, prog, shader);

13
src/mesa/drivers/dri/intel/intel_screen.c
View file

@ -109,6 +109,19 @@ const GLuint __driNConfigOptions = 15;
static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
#endif /*USE_NEW_INTERFACE */
/**
* For debugging purposes, this returns a time in seconds.
*/
double
get_time(void)
{
struct timespec tp;
clock_gettime(CLOCK_MONOTONIC, &tp);
return tp.tv_sec + tp.tv_nsec / 1000000000.0;
}
void
aub_dump_bmp(struct gl_context *ctx)
{

1
src/mesa/drivers/dri/intel/intel_screen.h
View file

@ -81,6 +81,7 @@ intelMakeCurrent(__DRIcontext * driContextPriv,
__DRIdrawable * driDrawPriv,
__DRIdrawable * driReadPriv);
double get_time(void);
void aub_dump_bmp(struct gl_context *ctx);
#endif