bb44e5c842
The system_profiler command used to determine the total memory on darwin
systems performs an "Activation Lock" check. This can produce a delay in
returning total memory. I began experiencing delays of around 10 seconds.
Switching from system_profiler to sysctl to calculate total memory
bypasses the "Activation Lock" check / timeout scenario.
Results of "time" command using system_profiler:
system_profiler SPHardwareDataType 0.17s user 0.23s system 3% cpu 10.165 total
grep -a "Memory:" 0.00s user 0.00s system 0% cpu 10.164 total
awk '{print $2 $3}' 0.00s user 0.00s system 0% cpu 10.163 total
Results of "time" command using sysctl:
sysctl -n hw.memsize 0.00s user 0.00s system 83% cpu 0.004 total
awk '{print $0/1024/1024/1024 " GB"}' 0.00s user 0.00s system 86% cpu 0.004 total
88 lines
3 KiB
Bash
Executable file
88 lines
3 KiB
Bash
Executable file
#!/usr/bin/env bash
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# setting the locale, some users have issues with different locales, this forces the correct one
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export LC_ALL=en_US.UTF-8
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current_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
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source $current_dir/utils.sh
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get_ratio()
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{
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case $(uname -s) in
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Linux)
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usage="$(free -h | awk 'NR==2 {print $3}')"
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total="$(free -h | awk 'NR==2 {print $2}')"
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formated="${usage}/${total}"
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echo "${formated//i/B}"
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;;
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Darwin)
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# Get used memory blocks with vm_stat, multiply by page size to get size in bytes, then convert to MiB
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used_mem=$(vm_stat | grep ' active\|wired ' | sed 's/[^0-9]//g' | paste -sd ' ' - | awk -v pagesize=$(pagesize) '{printf "%d\n", ($1+$2) * pagesize / 1048576}')
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# System Profiler performs an activation lock check, which can result in
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# time outs or a lagged response. (~10 seconds)
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# total_mem=$(system_profiler SPHardwareDataType | grep "Memory:" | awk '{print $2 $3}')
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total_mem=$(sysctl -n hw.memsize | awk '{print $0/1024/1024/1024 " GB"}')
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if ((used_mem < 1024 )); then
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echo "${used_mem}MB/$total_mem"
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else
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memory=$((used_mem/1024))
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echo "${memory}GB/$total_mem"
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fi
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;;
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FreeBSD)
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# Looked at the code from neofetch
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hw_pagesize="$(sysctl -n hw.pagesize)"
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mem_inactive="$(($(sysctl -n vm.stats.vm.v_inactive_count) * hw_pagesize))"
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mem_unused="$(($(sysctl -n vm.stats.vm.v_free_count) * hw_pagesize))"
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mem_cache="$(($(sysctl -n vm.stats.vm.v_cache_count) * hw_pagesize))"
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free_mem=$(((mem_inactive + mem_unused + mem_cache) / 1024 / 1024))
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total_mem=$(($(sysctl -n hw.physmem) / 1024 / 1024))
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used_mem=$((total_mem - free_mem))
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echo $used_mem
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if ((used_mem < 1024 )); then
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echo "${used_mem}MB/$total_mem"
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else
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memory=$((used_mem/1024))
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echo "${memory}GB/$total_mem"
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fi
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;;
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OpenBSD)
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# vmstat -s | grep "pages managed" | sed -ne 's/^ *\([0-9]*\).*$/\1/p'
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# Looked at the code from neofetch
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hw_pagesize="$(pagesize)"
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used_mem=$(( (
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$(vmstat -s | grep "pages active$" | sed -ne 's/^ *\([0-9]*\).*$/\1/p') +
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$(vmstat -s | grep "pages inactive$" | sed -ne 's/^ *\([0-9]*\).*$/\1/p') +
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$(vmstat -s | grep "pages wired$" | sed -ne 's/^ *\([0-9]*\).*$/\1/p') +
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$(vmstat -s | grep "pages zeroed$" | sed -ne 's/^ *\([0-9]*\).*$/\1/p') +
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0) * hw_pagesize / 1024 / 1024 ))
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total_mem=$(($(sysctl -n hw.physmem) / 1024 / 1024))
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#used_mem=$((total_mem - free_mem))
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total_mem=$(($total_mem/1024))
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if (( $used_mem < 1024 )); then
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echo $used_mem\M\B/$total_mem\G\B
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else
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memory=$(($used_mem/1024))
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echo $memory\G\B/$total_mem\G\B
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fi
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;;
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CYGWIN*|MINGW32*|MSYS*|MINGW*)
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# TODO - windows compatability
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;;
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esac
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}
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main()
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{
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ram_label=$(get_tmux_option "@dracula-ram-usage-label" "RAM")
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ram_ratio=$(get_ratio)
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echo "$ram_label $ram_ratio"
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}
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#run main driver
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main
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