 | 03. Release inactive memory |
This task checks system memory usage repeatedly and releases inactive memory if it's necessary.
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Please note that the author takes no responsibility for any damage caused by the use of those scripts.
(Trigger)
1. Repeat
Set interval like 15 minutes, 30 minutes or 1 hour as you want.
(Action)
1. Run Applescript
Input following script.
property rt : return as text
on run
tell application "Finder"
activate
set alertResult to display alert "【 Memory status 】" & rt & "Free memory space is not much now." & rt & "Release inactive memory?" message my memStatus() buttons {"Cancel", "Run"} default button 2 --giving up after 120
if alertResult is {button returned:"Run"} then
do shell script "du -s / &> /dev/null & sleep 10 && kill $!"
delay 2
tell application "GrowlHelperApp" to notify with name "Task3MessageWorkNotification" title (("Inactive memory is released" & rt & "Current memory status") as Unicode text) description (my memStatus() as Unicode text) application name "task3runner" icon of application "task3runner" sticky "yes"
end if
end tell
end run
on memStatus()
set memoryStatus to do shell script "top -l 1 | head -10 | grep PhysMem"
set wiredMem to word 2 of memoryStatus
set activeMem to word 4 of memoryStatus
set inactiveMem to word 6 of memoryStatus
set usedMem to word 8 of memoryStatus
set freeMem to word 10 of memoryStatus
set swapusage to do shell script "sysctl vm.swapusage"
set theSwap to "Swap : " & word 7 of swapusage & " (" & word 4 of swapusage & ")"
set grepLine to do shell script "top -l 1 | head -10 | grep VM"
set pageins to (((round (word 7 of grepLine as number) / 4096 * 100) / 100 * 16) as text) & "M"
set pageouts to (((round (word 10 of grepLine as number) / 4096 * 100) / 100 * 16) as text) & "M"
return "Free: " & freeMem & rt & "Wired: " & wiredMem & rt & "Active: " & activeMem & rt & "Inactive: " & inactiveMem & rt & "Used: " & usedMem & rt & rt & theSwap & rt & "Page Ins : " & pageins & rt & "Page Outs : " & pageouts & rt
end memStatusWhen this script is run, the current memory usage status will be shown in a dialog which has "Run" and "Cancel" buttons.
If "Run" button is pressed, following shell script is executed to release inactive memory.
du -s / &> /dev/null & sleep 10 && kill $!
After running this shell script, the memory status will be displayed again with Growl at this time.
(Condition)
1. AppleScript
Input following script to judge whether the memory should be released or not.
set limitMem to 1000 -- If free memory size is less than this number (MB), the action will be run.
-- with this example, if free memory size is less than 1,000MB, Task3 asks to release memory.
set freeMem to (do shell script "echo " & word 10 of (do shell script "top -l 1 | head -10 |grep PhysMem") & " | sed -e 's/M//g'") as number
return freeMem ≤ limitMemTo set a script as condition, the script should return boolean value, true or false. With this sample, the script returns false value if free memory is larger than 1,000MB, otherwise returns true. If the script returns true, the actions of the task are executed.
