X-Git-Url: https://git.xandkar.net/?p=khatus.git;a=blobdiff_plain;f=x1%2Fbin%2Fkhatus_cpu_usage_from_proc_since_last_check;fp=x1%2Fbin%2Fkhatus_cpu_usage_from_proc_since_last_check;h=e76d21d07c1f17a63197cc662fe6e7f4ce5ae4e8;hp=0000000000000000000000000000000000000000;hb=499c58a269a00e031302938b5a8f006f23aae451;hpb=4c703fadbdc17d1753d16841582636598f862416

diff --git a/x1/bin/khatus_cpu_usage_from_proc_since_last_check b/x1/bin/khatus_cpu_usage_from_proc_since_last_check
new file mode 100755
index 0000000..e76d21d
--- /dev/null
+++ b/x1/bin/khatus_cpu_usage_from_proc_since_last_check
@@ -0,0 +1,99 @@
+#! /bin/sh
+
+proc_stat_parse() {
+    proc_stat="$1"
+    n='[0-9]\+'
+    echo "$proc_stat" \
+    | grep "^cpu$n $n $n $n $n $n $n $n $n $n $n$" \
+    | awk '
+        {
+            cpu  = $1;
+            user = $2;
+            sys  = $4;
+            idle = $5;
+
+            total = user + sys + idle;
+            busy  = user + sys;
+
+            if (NR > 1) {printf " "};
+
+            out = sprintf("%s %d %d", cpu, total, busy);
+            #print out >> "cpu_usage_debug.txt";
+            printf "%s", out;
+        }
+        END {
+            #print "" >> "cpu_usage_debug.txt";
+            print "";
+        }
+        '
+}
+
+calc_delta() {
+    for proc_stat in "$1" "$2"; do
+        proc_stat_parse "$proc_stat"
+    done \
+    | awk '
+        {
+            t = NR;
+            for (i = 1; i <= (NF - 2); i += 3) {
+                cpu_count[t]++;
+                cpu_id = $i;  # For occasional debugging
+                total  = $(i + 1);
+                busy   = $(i + 2);
+                cpu[cpu_count[t], "total", t] = total;
+                cpu[cpu_count[t], "busy" , t] = busy;
+            }
+        }
+
+        END {
+            for (c=1; c<=cpu_count[2]; c++) {
+                total_1 = cpu[c, "total", 1];
+                total_2 = cpu[c, "total", 2];
+                busy_1  = cpu[c, "busy" , 1];
+                busy_2  = cpu[c, "busy" , 2];
+                total_d = total_2 - total_1;
+                busy_d  = busy_2  - busy_1;
+                percent_busy = (busy_d / total_d) * 100;
+
+                #printf(\
+                #    "c: %d, total_1: %f total_2: %f, total_d: %f\n",
+                #     c,     total_1,    total_2,     total_d \
+                #) >> "cpu_usage_debug.txt";
+                #printf(\
+                #    "c: %d, busy_1: %f busy_2: %f, busy_d: %f\n",
+                #     c,     busy_1,    busy_2,     busy_d \
+                #) >> "cpu_usage_debug.txt";
+                #printf(\
+                #    "c: %d, percent_busy: %f\n",
+                #     c, percent_busy \
+                #) >> "cpu_usage_debug.txt";
+
+                if (c > 1) {printf " "};
+                out = sprintf("%3.0f%%", percent_busy)
+                #printf "c: %d, out: %s\n", c, out >> "cpu_usage_debug.txt";
+                printf "%s", out;
+            }
+            #print "" >> "cpu_usage_debug.txt";
+            print "";
+        }
+        '
+}
+
+main() {
+    last_proc_stat="$HOME/var/run/cpu_usage_from_proc_since_last_check/last_proc_stat"
+
+    if [ ! -f "$last_proc_stat" ]
+    then
+        mkdir -p `dirname "$last_proc_stat"`
+        cat /proc/stat > "$last_proc_stat"
+        sleep 0.1
+    fi
+
+    previous=`cat $last_proc_stat`;
+    cat /proc/stat > "$last_proc_stat"
+    current=`cat $last_proc_stat`;
+
+    calc_delta "$previous" "$current"
+}
+
+main $@