all repos — slstatus @ 72a5e52a35d0a133cafa1a7b5b86f4549589965d

my build of slstatus (tools.suckless.org/slstatus/)

slstatus: add cpu_iowait

This commit introduces the cpu_iowait item, this is the percentage
of cpu time spent waiting on disks. High numbers typically indicate
that your system is not responsive due to disk IO.
This commit also avoid sleeping inside the cpu_perc and cpu_iowait
functions: waiting in either one implies lost info for the other.

Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Kurt Van Dijck dev.kurt@vandijck-laurijssen.be
Thu, 14 Sep 2017 23:58:38 +0200
commit

72a5e52a35d0a133cafa1a7b5b86f4549589965d

parent

57aa6a51647972094021e65d23099b105f00f37a

2 files changed, 34 insertions(+), 11 deletions(-)

jump to
M config.def.hconfig.def.h

@@ -16,6 +16,7 @@ * battery_perc battery percentage battery name

* battery_power battery power usage battery name * battery_state battery charging state battery name * cpu_perc cpu usage in percent NULL + * cpu_iowait cpu iowait in percent NULL * cpu_freq cpu frequency in MHz NULL * datetime date and time format string * disk_free free disk space in GB mountpoint path
M slstatus.cslstatus.c

@@ -40,6 +40,7 @@ static const char *battery_power(const char *bat);

static const char *battery_state(const char *bat); static const char *cpu_freq(void); static const char *cpu_perc(void); +static const char *cpu_iowait(void); static const char *datetime(const char *fmt); static const char *disk_free(const char *mnt); static const char *disk_perc(const char *mnt);

@@ -177,26 +178,47 @@

static const char * cpu_perc(void) { - struct timespec delay; int perc; - long double a[4], b[4]; + static long double a[7]; + static int valid; + long double b[7]; - if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], - &a[3]) != 4) { + memcpy(b, a, sizeof(b)); + if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], + &a[3], &a[4], &a[5], &a[6]) != 7) { + return unknown_str; + } + if (!valid) { + valid = 1; return unknown_str; } - delay.tv_sec = (interval / 2) / 1000; - delay.tv_nsec = ((interval / 2) % 1000) * 1000000; - nanosleep(&delay, NULL); + perc = 100 * ((b[0]+b[1]+b[2]+b[5]+b[6]) - (a[0]+a[1]+a[2]+a[5]+a[6])) / + ((b[0]+b[1]+b[2]+b[3]+b[4]+b[5]+b[6]) - (a[0]+a[1]+a[2]+a[3]+a[4]+a[5]+a[6])); + + return bprintf("%d", perc); +} + +static const char * +cpu_iowait(void) +{ + int perc; + static int valid; + static long double a[7]; + long double b[7]; - if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], - &b[3]) != 4) { + memcpy(b, a, sizeof(b)); + if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], + &a[3], &a[4], &a[5], &a[6]) != 7) { + return unknown_str; + } + if (!valid) { + valid = 1; return unknown_str; } - perc = 100 * ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / - ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3])); + perc = 100 * ((b[4]) - (a[4])) / + ((b[0]+b[1]+b[2]+b[3]+b[4]+b[5]+b[6]) - (a[0]+a[1]+a[2]+a[3]+a[4]+a[5]+a[6])); return bprintf("%d", perc); }