i965: Print a total time for the different shader stages.
Sometimes I've got a patch for a performance optimization that's not showing a statistically significant performance difference on reported FPS, but still seems like a good idea because it ought to reduce time spent in the shader. If I can see the total number of cycles spent in the shader stage being optimized, it may show that the patch is still worthwhile (or point out that it's actually broken in some way).
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@ -241,6 +241,21 @@ get_written_and_reset(struct brw_context *brw, int i,
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*reset = brw->shader_time.cumulative[ri];
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}
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static void
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print_shader_time_line(const char *name, int shader_num,
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uint64_t time, uint64_t total)
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{
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printf("%s", name);
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for (int i = strlen(name); i < 10; i++)
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printf(" ");
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printf("%4d: ", shader_num);
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printf("%16lld (%7.2f Gcycles) %4.1f%%\n",
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(long long)time,
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(double)time / 1000000000.0,
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(double)time / total * 100.0);
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}
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static void
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brw_report_shader_time(struct brw_context *brw)
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{
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@ -249,13 +264,16 @@ brw_report_shader_time(struct brw_context *brw)
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uint64_t scaled[brw->shader_time.num_entries];
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uint64_t *sorted[brw->shader_time.num_entries];
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uint64_t total_by_type[ST_FS16 + 1];
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memset(total_by_type, 0, sizeof(total_by_type));
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double total = 0;
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for (int i = 0; i < brw->shader_time.num_entries; i++) {
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uint64_t written = 0, reset = 0;
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enum shader_time_shader_type type = brw->shader_time.types[i];
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sorted[i] = &scaled[i];
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switch (brw->shader_time.types[i]) {
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switch (type) {
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case ST_VS_WRITTEN:
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case ST_VS_RESET:
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case ST_FS8_WRITTEN:
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@ -288,6 +306,16 @@ brw_report_shader_time(struct brw_context *brw)
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scaled[i] = time;
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}
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switch (type) {
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case ST_VS:
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case ST_FS8:
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case ST_FS16:
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total_by_type[type] += scaled[i];
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break;
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default:
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break;
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}
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total += scaled[i];
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}
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@ -314,24 +342,24 @@ brw_report_shader_time(struct brw_context *brw)
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switch (brw->shader_time.types[i]) {
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case ST_VS:
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printf("vs %4d: ", shader_num);
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print_shader_time_line("vs", shader_num, scaled[i], total);
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break;
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case ST_FS8:
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printf("fs8 %4d: ", shader_num);
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print_shader_time_line("fs8", shader_num, scaled[i], total);
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break;
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case ST_FS16:
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printf("fs16 %4d: ", shader_num);
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print_shader_time_line("fs16", shader_num, scaled[i], total);
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break;
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default:
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printf("other: ");
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print_shader_time_line("other", shader_num, scaled[i], total);
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break;
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}
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printf("%16lld (%7.2f Gcycles) %4.1f%%\n",
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(long long)scaled[i],
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(double)scaled[i] / 1000000000.0,
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(double)scaled[i] / total * 100.0);
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}
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printf("\n");
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print_shader_time_line("total vs", -1, total_by_type[ST_VS], total);
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print_shader_time_line("total fs8", -1, total_by_type[ST_FS8], total);
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print_shader_time_line("total fs16", -1, total_by_type[ST_FS16], total);
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}
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static void
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