[Intel-gfx] [PATCH i-g-t 2/4] tools/intel_gpu_top: Fix client layout on first sample period

[Intel-gfx] [PATCH i-g-t 2/4] tools/intel_gpu_top: Fix client layout on first sample period

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

When I moved the client name to be last, I did not account for the fact
current code skips showing engine utilisation until at least two sampling
periods have passed. Consequence of this is that client name gets printed
as the second field and not under the "NAME" column header.

Fix it by emitting spaces instead of engine utilisation until two samples
have been collected.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 tools/intel_gpu_top.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index 60fe06917531..c5abd0c92155 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -928,12 +928,14 @@ static void free_display_clients(struct igt_drm_clients *clients)
 
 static const char *bars[] = { " ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█" };
 
-static void n_spaces(const unsigned int n)
+static unsigned int n_spaces(const unsigned int n)
 {
 	unsigned int i;
 
 	for (i = 0; i < n; i++)
 		putchar(' ');
+
+	return n;
 }
 
 static void
@@ -2043,14 +2045,17 @@ print_client(struct igt_drm_client *c, struct engines *engines, double t, int li
 
 		len = printf("%*s ", clients->max_pid_len, c->pid_str);
 
-		for (i = 0;
-		     c->samples > 1 && i <= iclients->classes.max_engine_id;
-		     i++) {
+		for (i = 0; i <= iclients->classes.max_engine_id; i++) {
 			double pct, max;
 
 			if (!iclients->classes.capacity[i])
 				continue;
 
+			if (c->samples < 2) {
+				len += n_spaces(*class_w);
+				continue;
+			}
+
 			pct = (double)c->val[i] / period_us / 1e3 * 100;
 
 			/*
-- 
2.39.2

[Intel-gfx] [PATCH i-g-t 1/4] tools/intel_gpu_top: Fix clients header width when no clients

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Recent refactoring broke the clients header in cases when there are no
clients displayed. To fix it we need to account the width of the "NAME"
label.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Kamil Konieczny <kamil.konieczny@linux.intel.com>
---
 tools/intel_gpu_top.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index 10601e66b18e..60fe06917531 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -1967,6 +1967,8 @@ print_clients_header(struct igt_drm_clients *clients, int lines,
 		     int con_w, int con_h, int *class_w)
 {
 	struct intel_clients *iclients = clients->private_data;
+	const int max_name_len = clients->max_name_len < 4 ?
+				 4 : clients->max_name_len; /* At least "NAME" */
 
 	if (output_mode == INTERACTIVE) {
 		unsigned int num_active = 0;
@@ -1990,9 +1992,8 @@ print_clients_header(struct igt_drm_clients *clients, int lines,
 					num_active++;
 			}
 
-			*class_w = width =
-				(con_w - len - clients->max_name_len - 1) /
-				num_active;
+			*class_w = width = (con_w - len - max_name_len - 1) /
+					   num_active;
 
 			for (i = 0; i <= iclients->classes.max_engine_id; i++) {
 				const char *name = iclients->classes.names[i];
-- 
2.39.2

[Intel-gfx] [PATCH i-g-t 2/4] tools/intel_gpu_top: Fix client layout on first sample period

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

When I moved the client name to be last, I did not account for the fact
current code skips showing engine utilisation until at least two sampling
periods have passed. Consequence of this is that client name gets printed
as the second field and not under the "NAME" column header.

Fix it by emitting spaces instead of engine utilisation until two samples
have been collected.

v2:
 * Fix n_spaces return type to signed.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Kamil Konieczny <kamil.konieczny@linux.intel.com>
---
 tools/intel_gpu_top.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index 60fe06917531..b6d1014f00b8 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -928,12 +928,14 @@ static void free_display_clients(struct igt_drm_clients *clients)
 
 static const char *bars[] = { " ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█" };
 
-static void n_spaces(const unsigned int n)
+static int n_spaces(const int n)
 {
-	unsigned int i;
+	int i;
 
 	for (i = 0; i < n; i++)
 		putchar(' ');
+
+	return n;
 }
 
 static void
@@ -2043,14 +2045,17 @@ print_client(struct igt_drm_client *c, struct engines *engines, double t, int li
 
 		len = printf("%*s ", clients->max_pid_len, c->pid_str);
 
-		for (i = 0;
-		     c->samples > 1 && i <= iclients->classes.max_engine_id;
-		     i++) {
+		for (i = 0; i <= iclients->classes.max_engine_id; i++) {
 			double pct, max;
 
 			if (!iclients->classes.capacity[i])
 				continue;
 
+			if (c->samples < 2) {
+				len += n_spaces(*class_w);
+				continue;
+			}
+
 			pct = (double)c->val[i] / period_us / 1e3 * 100;
 
 			/*
-- 
2.39.2

[Intel-gfx] [PATCH i-g-t 3/4] tools/intel_gpu_top: Optimise interactive display a bit

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Padding the percentage bars and table columns with spaces happens quite a
lot so lets do better than putchar at a time. Have a table of visually
empty strings and build the required length out of those chunks.

While at it, also move the percentage bar table into its function scope.

v2:
 * Fix checkpatch and use ARRAY_SIZE. (Kamil)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Kamil Konieczny <kamil.konieczny@linux.intel.com>
---
 tools/intel_gpu_top.c | 38 +++++++++++++++++++++++++++++++++-----
 1 file changed, 33 insertions(+), 5 deletions(-)

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index b6d1014f00b8..006879c4ae67 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -926,14 +926,39 @@ static void free_display_clients(struct igt_drm_clients *clients)
 	free(clients);
 }
 
-static const char *bars[] = { " ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█" };
-
 static int n_spaces(const int n)
 {
-	int i;
+	static const char *spaces[] = {
+		" ",
+		"  ",
+		"   ",
+		"    ",
+		"     ",
+		"      ",
+		"       ",
+		"        ",
+		"         ",
+		"          ",
+		"           ",
+		"            ",
+		"             ",
+		"              ",
+		"               ",
+		"                ",
+		"                 ",
+		"                  ",
+		"                   ",
+	};
+	int i, r = n;
 
-	for (i = 0; i < n; i++)
-		putchar(' ');
+	while (r) {
+		if (r > ARRAY_SIZE(spaces))
+			i = ARRAY_SIZE(spaces) - 1;
+		else
+			i = r - 1;
+		fputs(spaces[i], stdout);
+		r -= i + 1;
+	}
 
 	return n;
 }
@@ -941,6 +966,9 @@ static int n_spaces(const int n)
 static void
 print_percentage_bar(double percent, double max, int max_len, bool numeric)
 {
+	static const char *bars[] = {
+		" ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█"
+	};
 	int bar_len, i, len = max_len - 2;
 	const int w = 8;
 
-- 
2.39.2

[Intel-gfx] [PATCH i-g-t 4/4] tools/intel_gpu_top: Handle narrow terminals more gracefully

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Instead of asserting just skip trying to print columns when terminal is
too narrow.

At the same time fix some type confusion to fix calculations going huge.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Closes: https://gitlab.freedesktop.org/drm/igt-gpu-tools/-/issues/143
Reviewed-by: Kamil Konieczny <kamil.konieczny@linux.intel.com>
---
 tools/intel_gpu_top.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index 006879c4ae67..00506c63db4e 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -972,7 +972,8 @@ print_percentage_bar(double percent, double max, int max_len, bool numeric)
 	int bar_len, i, len = max_len - 2;
 	const int w = 8;
 
-	assert(max_len > 0);
+	if (len < 2) /* For edge lines '|' */
+		return;
 
 	bar_len = ceil(w * percent * len / max);
 	if (bar_len > w * len)
@@ -986,6 +987,8 @@ print_percentage_bar(double percent, double max, int max_len, bool numeric)
 		printf("%s", bars[i]);
 
 	len -= (bar_len + (w - 1)) / w;
+	if (len < 1)
+		return;
 	n_spaces(len);
 
 	putchar('|');
@@ -2001,8 +2004,7 @@ print_clients_header(struct igt_drm_clients *clients, int lines,
 				 4 : clients->max_name_len; /* At least "NAME" */
 
 	if (output_mode == INTERACTIVE) {
-		unsigned int num_active = 0;
-		int len;
+		int len, num_active = 0;
 
 		if (lines++ >= con_h)
 			return lines;
-- 
2.39.2

Re: [Intel-gfx] [PATCH i-g-t 3/4] tools/intel_gpu_top: Optimise interactive display a bit

[Kamil Konieczny]

Hi Tvrtko,
On 2023-10-11 at 09:38:44 +0100, Tvrtko Ursulin wrote:
> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> 
> Padding the percentage bars and table columns with spaces happens quite a
> lot so lets do better than putchar at a time. Have a table of visually
> empty strings and build the required length out of those chunks.
> 
> While at it, also move the percentage bar table into its function scope.
> 
> v2:
>  * Fix checkpatch and use ARRAY_SIZE. (Kamil)
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
> Cc: Kamil Konieczny <kamil.konieczny@linux.intel.com>

Reviewed-by: Kamil Konieczny <kamil.konieczny@linux.intel.com>

> ---
>  tools/intel_gpu_top.c | 38 +++++++++++++++++++++++++++++++++-----
>  1 file changed, 33 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
> index b6d1014f00b8..006879c4ae67 100644
> --- a/tools/intel_gpu_top.c
> +++ b/tools/intel_gpu_top.c
> @@ -926,14 +926,39 @@ static void free_display_clients(struct igt_drm_clients *clients)
>  	free(clients);
>  }
>  
> -static const char *bars[] = { " ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█" };
> -
>  static int n_spaces(const int n)
>  {
> -	int i;
> +	static const char *spaces[] = {
> +		" ",
> +		"  ",
> +		"   ",
> +		"    ",
> +		"     ",
> +		"      ",
> +		"       ",
> +		"        ",
> +		"         ",
> +		"          ",
> +		"           ",
> +		"            ",
> +		"             ",
> +		"              ",
> +		"               ",
> +		"                ",
> +		"                 ",
> +		"                  ",
> +		"                   ",
> +	};
> +	int i, r = n;
>  
> -	for (i = 0; i < n; i++)
> -		putchar(' ');
> +	while (r) {
> +		if (r > ARRAY_SIZE(spaces))
> +			i = ARRAY_SIZE(spaces) - 1;
> +		else
> +			i = r - 1;
> +		fputs(spaces[i], stdout);
> +		r -= i + 1;
> +	}
>  
>  	return n;
>  }
> @@ -941,6 +966,9 @@ static int n_spaces(const int n)
>  static void
>  print_percentage_bar(double percent, double max, int max_len, bool numeric)
>  {
> +	static const char *bars[] = {
> +		" ", "▏", "▎", "▍", "▌", "▋", "▊", "▉", "█"
> +	};
>  	int bar_len, i, len = max_len - 2;
>  	const int w = 8;
>  
> -- 
> 2.39.2
> 

Re: [Intel-gfx] [PATCH i-g-t 3/4] tools/intel_gpu_top: Optimise interactive display a bit

[Tvrtko Ursulin]

On 11/10/2023 13:40, Kamil Konieczny wrote:
> Hi Tvrtko,
> On 2023-10-11 at 09:38:44 +0100, Tvrtko Ursulin wrote:
>> From: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
>>
>> Padding the percentage bars and table columns with spaces happens quite a
>> lot so lets do better than putchar at a time. Have a table of visually
>> empty strings and build the required length out of those chunks.
>>
>> While at it, also move the percentage bar table into its function scope.
>>
>> v2:
>>   * Fix checkpatch and use ARRAY_SIZE. (Kamil)
>>
>> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
>> Cc: Kamil Konieczny <kamil.konieczny@linux.intel.com>
> 
> Reviewed-by: Kamil Konieczny <kamil.konieczny@linux.intel.com>

Thanks Kamil, now pushed!

Regards,

Tvrtko