All widgets
Activity Monitor
Comes with Chopstick
CPU and memory use with the busiest processes, like a glance at Activity Monitor; opens the full app from the card.
Already installed? It's in your widget library.
Type it in the notch's search
- Show CPU and memory
- Open Activity Monitor
What it runs
A widget is a folder of plain files. Here is all of its code.
widget.json
{
"id": "activity-monitor",
"name": "Activity Monitor",
"icon": "icon.png",
"description": "CPU and memory use with the busiest processes, like a glance at Activity Monitor; opens the full app from the card.",
"anytime": true,
"watch": [
{
"script": "stats.sh",
"every": 3,
"as": "sys"
}
],
"initial": "glance",
"states": {
"glance": {
"compact": {
"leading": {
"symbol": "cpu",
"tint": "{{sys.cpu_tint | gray}}"
},
"trailing": {
"text": "{{sys.cpu_label | …}}"
}
},
"expanded": {
"size": "regular",
"header": {
"symbol": "cpu",
"title": "Activity Monitor"
},
"blocks": [
{
"row": [
{
"ring": {
"value": "{{sys.cpu | 0}}",
"max": "100",
"label": "{{sys.cpu_label}}",
"size": "medium",
"tint": "{{sys.cpu_tint | cyan}}"
}
},
{
"stack": [
{ "text": "CPU", "style": "body" },
{ "note": "{{sys.cpu_label | …}} in use" }
],
"align": "leading",
"spacing": "tight"
},
"spacer",
{
"ring": {
"value": "{{sys.mem_pct | 0}}",
"max": "100",
"label": "{{sys.mem_pct}}%",
"size": "medium",
"tint": "{{sys.mem_tint | green}}"
}
},
{
"stack": [
{ "text": "Memory", "style": "body" },
{ "note": "{{sys.mem_used | …}} of {{sys.mem_total}}" },
{ "note": "Pressure {{sys.pressure | normal}}" }
],
"align": "leading",
"spacing": "tight"
}
],
"align": "center"
},
{
"sparkline": {
"from": "sys.history",
"tint": "{{sys.cpu_tint | cyan}}"
}
},
{
"list": {
"from": "sys.procs",
"limit": 5,
"title": "{{item.name}}",
"subtitle": "{{item.cpu}} CPU · {{item.mem}}"
}
},
{
"button": {
"symbol": "arrow.up.forward.app",
"label": "Open Activity Monitor",
"do": [
{ "run": "open.sh" }
]
}
}
]
},
"keys": [
{
"key": "cmd+o",
"label": "Activity Monitor",
"do": [
{ "run": "open.sh" }
]
}
]
}
},
"commands": {
"show": {
"description": "Show CPU and memory use and the busiest processes.",
"phrase": "Show CPU and memory",
"do": [
{ "go": "glance" }
]
},
"open": {
"description": "Open the Activity Monitor app.",
"phrase": "Open Activity Monitor",
"do": [
{ "run": "open.sh" }
]
}
},
"preview": {
"states": [
"glance"
],
"data": {
"sys": {
"cpu": 34,
"cpu_label": "34%",
"cpu_tint": "cyan",
"history": [12, 18, 15, 22, 40, 61, 48, 30, 26, 34],
"mem_pct": 71,
"mem_used": "17.0 GB",
"mem_total": "24 GB",
"pressure": "normal",
"mem_tint": "green",
"procs": [
{ "pid": 405, "name": "WindowServer", "cpu": "21.3%", "mem": "837 MB" },
{ "pid": 38418, "name": "Safari", "cpu": "14.4%", "mem": "1.2 GB" },
{ "pid": 0, "name": "kernel_task", "cpu": "9.4%", "mem": "31 MB" },
{ "pid": 37784, "name": "Xcode", "cpu": "6.1%", "mem": "2.4 GB" },
{ "pid": 527, "name": "Spotify", "cpu": "3.0%", "mem": "410 MB" }
]
}
}
}
}
open.sh
#!/bin/sh open -a "Activity Monitor"
stats.sh
#!/bin/sh
# CPU, memory and the busiest processes from a one-second `top` sample, as one JSON object.
# The last 30 CPU readings are kept in $CHOPSTICK_STORAGE for the sparkline.
OUT=$(top -l 2 -n 6 -o cpu -s 1 -stats pid,command,cpu,mem 2>/dev/null) || { echo "Couldn't read top" >&2; exit 1; }
# top's first sample counts since boot; keep the second.
OUT=$(printf '%s\n' "$OUT" | awk '/^Processes:/ { n++ } n == 2')
CPU=$(printf '%s\n' "$OUT" | awk '/^CPU usage:/ { for (i = 1; i <= NF; i++) if ($i == "idle") { sub("%", "", $(i-1)); printf "%d", 100 - $(i-1) + 0.5 } }')
[ -n "$CPU" ] || CPU=0
# Used like Activity Monitor counts it: app memory (anonymous minus purgeable), wired and compressed.
USED_GB=$(vm_stat | awk '
/page size of/ { size = $8 }
/^Anonymous pages/ { a = $NF } /^Pages purgeable/ { p = $NF }
/^Pages wired down/ { w = $NF } /^Pages occupied by compressor/ { c = $NF }
END { printf "%.1f", (a - p + w + c) * size / 1073741824 }')
TOTAL=$(( $(sysctl -n hw.memsize) / 1073741824 ))
MEM_PCT=$(awk -v u="$USED_GB" -v t="$TOTAL" 'BEGIN { printf "%d", u / t * 100 + 0.5 }')
# 1 normal, 2 warning, 4 critical
case $(sysctl -n kern.memorystatus_vm_pressure_level 2>/dev/null) in
4) PRESSURE="critical"; MEM_TINT="red" ;;
2) PRESSURE="high"; MEM_TINT="yellow" ;;
*) PRESSURE="normal"; MEM_TINT="green" ;;
esac
if [ "$CPU" -ge 80 ]; then CPU_TINT="red"
elif [ "$CPU" -ge 50 ]; then CPU_TINT="orange"
else CPU_TINT="cyan"; fi
HISTORY=""
if [ -n "$CHOPSTICK_STORAGE" ]; then
mkdir -p "$CHOPSTICK_STORAGE"
F="$CHOPSTICK_STORAGE/cpu"
{ cat "$F" 2>/dev/null; echo "$CPU"; } | tail -30 > "$F.new" && mv "$F.new" "$F"
HISTORY=$(paste -sd, "$F")
fi
[ -n "$HISTORY" ] || HISTORY=$CPU
# Rows after the PID header, without top itself: "75769 swift-frontend 69.1 655M+".
# top cuts names at 16 characters, so the names come from ps where it can tell (not kernel_task).
ROWS=$(printf '%s\n' "$OUT" | awk '/^PID/ { rows = 1; next } rows && NF >= 4 && $2 != "top" { $0 = $1 " " $(NF-1) " " $NF " " substr($0, index($0, $2)); NF -= 2; print }' | head -5)
PIDS=$(printf '%s\n' "$ROWS" | awk '{ print $1 }' | paste -sd, -)
PROCS=$( { ps -o pid=,comm= -p "$PIDS" 2>/dev/null; echo "--"; printf '%s\n' "$ROWS"; } | awk '
$0 == "--" { rows = 1; next }
!rows { pid = $1; sub(/^ *[0-9]+ /, ""); n = split($0, parts, "/"); names[pid] = parts[n]; next }
{
name = $4; for (j = 5; j <= NF; j++) name = name " " $j; if ($1 in names) name = names[$1]; gsub(/["\\]/, "", name)
mem = $3; sub(/[+-]$/, "", mem); u = substr(mem, length(mem)); v = mem + 0
if (u == "K") v /= 1024; if (u == "G") v *= 1024; if (u == "B") v /= 1048576
mem = v >= 1024 ? sprintf("%.1f GB", v / 1024) : sprintf("%d MB", v + 0.5)
printf "%s{\"pid\":%d,\"name\":\"%s\",\"cpu\":\"%s%%\",\"mem\":\"%s\"}", (i++ ? "," : ""), $1, name, $2, mem
}')
printf '{"cpu":%d,"cpu_label":"%d%%","cpu_tint":"%s","history":[%s],"mem_pct":%d,"mem_used":"%s GB","mem_total":"%d GB","pressure":"%s","mem_tint":"%s","procs":[%s]}\n' \
"$CPU" "$CPU" "$CPU_TINT" "$HISTORY" "$MEM_PCT" "$USED_GB" "$TOTAL" "$PRESSURE" "$MEM_TINT" "$PROCS"