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overlay: Scale the CPU busy value by the numer of active cores

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Having 100% always mean one processor fully utilised is much easier to
understand (than having to remember how many cores are on each machine
and scale appropriately).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-08-27 17:40:45 +01:00
parent 177208b0d4
commit c6b26c5a40
3 changed files with 14 additions and 2 deletions
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10
overlay/cpu-top.c
View File

@ -25,10 +25,20 @@
#include <stdio.h> #include <stdio.h>
#include <unistd.h> #include <unistd.h>
#include <fcntl.h> #include <fcntl.h>
#include <string.h>
#include <errno.h> #include <errno.h>
#include "cpu-top.h" #include "cpu-top.h"
int cpu_top_init(struct cpu_top *cpu)
{
memset(cpu, 0, sizeof(*cpu));
cpu->nr_cpu = sysconf(_SC_NPROCESSORS_ONLN);
return 0;
}
int cpu_top_update(struct cpu_top *cpu) int cpu_top_update(struct cpu_top *cpu)
{ {
struct cpu_stat *s = &cpu->stat[cpu->count++&1]; struct cpu_stat *s = &cpu->stat[cpu->count++&1];

2
overlay/cpu-top.h
View File

@ -29,6 +29,7 @@
struct cpu_top { struct cpu_top {
uint8_t busy; uint8_t busy;
int nr_cpu;
int count; int count;
struct cpu_stat { struct cpu_stat {
@ -37,6 +38,7 @@ struct cpu_top {
} stat[2]; } stat[2];
}; };
int cpu_top_init(struct cpu_top *cpu);
int cpu_top_update(struct cpu_top *cpu); int cpu_top_update(struct cpu_top *cpu);
#endif /* CPU_TOP_H */ #endif /* CPU_TOP_H */

4
overlay/overlay.c
View File

@ -143,8 +143,8 @@ static void init_gpu_top(struct overlay_context *ctx,
}; };
int n; int n;
cpu_top_init(&gt->cpu_top);
gpu_top_init(&gt->gpu_top); gpu_top_init(&gt->gpu_top);
memset(&gt->cpu, 0, sizeof(gt->cpu));
chart_init(&gt->cpu, "CPU", 120); chart_init(&gt->cpu, "CPU", 120);
chart_set_position(&gt->cpu, PAD, PAD); chart_set_position(&gt->cpu, PAD, PAD);
@ -222,7 +222,7 @@ static void show_gpu_top(struct overlay_context *ctx, struct overlay_gpu_top *gt
y = PAD + 12 - 2; y = PAD + 12 - 2;
cairo_set_source_rgba(ctx->cr, 0.75, 0.25, 0.75, 1.); cairo_set_source_rgba(ctx->cr, 0.75, 0.25, 0.75, 1.);
cairo_move_to(ctx->cr, PAD, y); cairo_move_to(ctx->cr, PAD, y);
sprintf(txt, "CPU: %3d%% busy", gt->cpu_top.busy); sprintf(txt, "CPU: %3d%% busy", gt->cpu_top.busy * gt->cpu_top.nr_cpu);
cairo_show_text(ctx->cr, txt); cairo_show_text(ctx->cr, txt);
y += 14; y += 14;