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overlay: Show per-process wait times

Browse Source 
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-08-17 21:14:10 +01:00
parent cc9de398cf
commit eed59eac47
4 changed files with 75 additions and 18 deletions
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6
overlay/chart.c
View File

@ -83,9 +83,11 @@ void chart_add_sample(struct chart *chart, double value)
{
int pos;
pos = chart->current_sample % chart->num_samples;
if (chart->num_samples == 0)
return;
pos = chart->current_sample++ % chart->num_samples;
chart->samples[pos] = value;
chart->current_sample++;
}
static void chart_update_range(struct chart *chart)

69
overlay/gpu-perf.c
View File

@ -169,26 +169,37 @@ static char *get_comm(pid_t pid, char *comm, int len)
return comm;
}
static struct gpu_perf_comm *
lookup_comm(struct gpu_perf *gp, pid_t pid)
{
struct gpu_perf_comm *comm;
for (comm = gp->comm; comm != NULL; comm = comm->next) {
if (comm->pid == pid)
break;
}
if (comm == NULL) {
comm = calloc(1, sizeof(*comm));
if (comm == NULL)
return NULL;
comm->next = gp->comm;
gp->comm = comm;
get_comm(pid, comm->name, sizeof(comm->name));
comm->pid = pid;
}
return comm;
}
static int request_add(struct gpu_perf *gp, const void *event)
{
const struct sample_event *sample = event;
struct gpu_perf_comm *comm;
for (comm = gp->comm; comm != NULL; comm = comm->next) {
if (comm->pid == sample->pid)
break;
}
if (comm == NULL) {
comm = malloc(sizeof(*comm));
if (comm == NULL)
return 0;
comm->next = gp->comm;
gp->comm = comm;
get_comm(sample->pid, comm->name, sizeof(comm->name));
comm->pid = sample->pid;
memset(comm->nr_requests, 0, sizeof(comm->nr_requests));
}
comm = lookup_comm(gp, sample->pid);
if (comm == NULL)
return 0;
comm->nr_requests[sample->raw[1]]++;
return 1;
@ -211,6 +222,32 @@ static int flip_complete(struct gpu_perf *gp, const void *event)
return 1;
}
static int wait_begin(struct gpu_perf *gp, const void *event)
{
const struct sample_event *sample = event;
struct gpu_perf_comm *comm;
comm = lookup_comm(gp, sample->pid);
if (comm == NULL)
return 0;
comm->wait_begin = sample->time;
return 0;
}
static int wait_end(struct gpu_perf *gp, const void *event)
{
const struct sample_event *sample = event;
struct gpu_perf_comm *comm;
comm = lookup_comm(gp, sample->pid);
if (comm == NULL)
return 0;
comm->wait_time += sample->time - comm->wait_begin;
return 0;
}
void gpu_perf_init(struct gpu_perf *gp, unsigned flags)
{
memset(gp, 0, sizeof(*gp));
@ -220,6 +257,8 @@ void gpu_perf_init(struct gpu_perf *gp, unsigned flags)
perf_tracepoint_open(gp, "i915", "i915_gem_request_add", request_add);
if (perf_tracepoint_open(gp, "i915", "i915_gem_ring_complete", seqno_end) == 0)
perf_tracepoint_open(gp, "i915", "i915_gem_ring_dispatch", seqno_start);
if (perf_tracepoint_open(gp, "i915", "i915_gem_request_wait_begin", wait_begin) == 0)
perf_tracepoint_open(gp, "i915", "i915_gem_request_wait_end", wait_end);
perf_tracepoint_open(gp, "i915", "i915_flip_complete", flip_complete);
if (gp->nr_events == 0)

3
overlay/gpu-perf.h
View File

@ -18,6 +18,9 @@ struct gpu_perf {
pid_t pid;
int nr_requests[4];
void *user_data;
uint64_t wait_begin;
uint64_t wait_time;
} *comm;
};

15
overlay/overlay.c
View File

@ -244,6 +244,8 @@ static void show_gpu_perf(struct overlay_context *ctx, struct overlay_gpu_perf *
}
for (prev = &gp->gpu_perf.comm; (comm = *prev) != NULL; ) {
int need_comma = 0;
if (comm->user_data) {
struct chart *c = comm->user_data;
cairo_set_source_rgba(ctx->cr,
@ -259,8 +261,19 @@ static void show_gpu_perf(struct overlay_context *ctx, struct overlay_gpu_perf *
for (n = 0; n < 3; n++) {
if (comm->nr_requests[n] == 0)
continue;
sprintf(buf, " %d %s", comm->nr_requests[n], ring_name[n]);
sprintf(buf, "%s %d %s", need_comma ? "," : "", comm->nr_requests[n], ring_name[n]);
cairo_show_text(ctx->cr, buf);
need_comma = true;
}
if (comm->wait_time) {
if (comm->wait_time > 100) {
sprintf(buf, "%s %.1f us waiting",
need_comma ? "," : "",
comm->wait_time / 1000.);
cairo_show_text(ctx->cr, buf);
need_comma = true;
}
comm->wait_time = 0;
}
y += 14;