96 lines
3.1 KiB
Bash
Executable File
96 lines
3.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -u
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set -e
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LC_NUMERIC=C
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CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
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source "$CURRENT_DIR/helpers.sh"
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swap_view_tmpl=$(get_tmux_option "@sysstat_swap_view_tmpl" 'SW:#[fg=#{swap.color}]#{swap.pused}#[default]')
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swap_medium_threshold=$(get_tmux_option "@sysstat_swap_medium_threshold" "25")
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swap_stress_threshold=$(get_tmux_option "@sysstat_swap_stress_threshold" "75")
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swap_color_low=$(get_tmux_option "@sysstat_swap_color_low" "green")
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swap_color_medium=$(get_tmux_option "@sysstat_swap_color_medium" "yellow")
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swap_color_stress=$(get_tmux_option "@sysstat_swap_color_stress" "red")
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size_unit=$(get_tmux_option "@sysstat_swap_size_unit" "G")
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get_swap_color() {
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local swap_pused=$1
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if fcomp "$swap_stress_threshold" "$swap_pused"; then
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echo "$swap_color_stress";
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elif fcomp "$swap_medium_threshold" "$swap_pused"; then
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echo "$swap_color_medium";
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else
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echo "$swap_color_low";
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fi
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}
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print_swap() {
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local swap_usage
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if is_osx; then
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swap_usage=$(get_swap_usage_osx)
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elif is_linux; then
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swap_usage=$(get_swap_usage_linux)
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fi
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local size_scale="$(get_size_scale_factor "$size_unit")"
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local size_format="$(get_size_format "$size_unit")"
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# Extract swap free and used in MiB, calculate total and percentage
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local swap_free=$(echo $swap_usage | awk -v scale="$size_scale" '{ print $1/scale }')
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local swap_used=$(echo $swap_usage | awk -v scale="$size_scale" '{ print $2/scale }')
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local swap_total=$(echo "$swap_free + $swap_used" | calc)
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local swap_pused=$(echo "($swap_used / $swap_total) * 100" | calc)
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local swap_pfree=$(echo "($swap_free / $swap_total) * 100" | calc)
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# Calculate colors for mem and swap
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local swap_color=$(get_swap_color "$swap_pused")
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local swap_view="$swap_view_tmpl"
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swap_view="${swap_view//'#{swap.used}'/$(printf "$size_format" "$swap_used" "$size_unit")}"
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swap_view="${swap_view//'#{swap.pused}'/$(printf "%.0f%%" "$swap_pused")}"
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swap_view="${swap_view//'#{swap.free}'/$(printf "$size_format" "$swap_free" "$size_unit")}"
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swap_view="${swap_view//'#{swap.pfree}'/$(printf "%.0f%%" "$swap_pfree")}"
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swap_view="${swap_view//'#{swap.total}'/$(printf "$size_format" "$swap_total" "$size_unit")}"
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swap_view="${swap_view//'#{swap.color}'/$(echo "$swap_color" | awk '{ print $1 }')}"
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swap_view="${swap_view//'#{swap.color2}'/$(echo "$swap_color" | awk '{ print $2 }')}"
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swap_view="${swap_view//'#{swap.color3}'/$(echo "$swap_color" | awk '{ print $3 }')}"
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echo "$swap_view"
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}
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get_swap_usage_osx(){
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# assume swap size in MB
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local swap_used=$(sysctl -nq vm.swapusage | awk -F ' ' '{ print $2 }' | awk -F '=' '{gsub(/^[ ]|[M]$/, "", $2); printf "%d", $2 * 1024 }')
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local swap_free=$(sysctl -nq vm.swapusage | awk -F ' ' '{ print $3 }' | awk -F '=' '{gsub(/^[ ]|[M]$/, "", $2); printf "%d", $2 * 1024 }')
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printf "%s %s" "$swap_free" "$swap_used"
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}
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get_swap_usage_linux(){
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</proc/meminfo awk '
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BEGIN { total=0; free=0; }
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/SwapTotal:/ { total=$2; }
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/SwapFree:/ { free=$2; }
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END { print free, total-free }
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'
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}
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main() {
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print_swap
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}
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main
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