Detect RAM Spikes

Help and Feedback Scripting Support
#1

Hey. I am wondering how I might detect RAM spikes in my game.
Ideas?
Thanks!

2 Likes
#2

you can check the client memory which determines the laginess of your game by holding ctrl + shift + f7 and look on the top left of your screen for your client memory. You can also use the Micro Profiler to determine whether something is making your game laggy.

2 Likes
#3

Thanks for your speedy response.
But how might I detect this using a local script?

#4

You don’t really detect stuff like this with local scripts. You just use the micro profiler or ctrl + shift + f7 in the roblox client to see your local memory.

#5

Yeah, but this would be for an anti-cheat. So that wouldn’t really work.

#6

Yea its not a good idea for an anti-cheat

#7

you can use Stats:GetTotalMemoryUsageMb() to get the server or clients memory usage.

#8 
game.Players.PlayerAdded:Connect(function(player)
while true do
wait(5)
if game:GetService("Stats"):GetTotalMemoryUsageMb() > 700 then
     print("Player is exploiting",player.Name)
     player:Kick("Message here ig")
end
end
end)
#9

you can instead do

game.Players.PlayerAdded:Connect(function(player)
while task.wait(5) do
if game:GetService("Stats"):GetTotalMemoryUsageMb() > 700 then
     print("Player is exploiting",player.Name)
     player:Kick("Message here ig")
end
end
end)
#10

U need to test the memory usage in roblox not in roblox studio cause there is a big difference, also this anti-cheat is a big mistake since it could kick non exploiters. Since loops take alot of memory ur better off making a exploit that doesnt need this

2 Likes
#11

Im kina out of options at this point

#12

@neviquatro @betterthenharrybarry

If I am not mistaken, those will check for the total Memory Usage, which means it doesn’t detect spikes. So eventually every player will get kicked because it is collective.

#13

Wouldn’t that just kick them if their computer is constantly using more than 700 MB of RAM???

1 Like
#14

You can just change the value lmaoo

#15

Yeah, I know that I’m just saying that’s not the best solution to the problem.

1 Like
#16

U can check if it spikes by comparing the values, not that hard.

#17

What might work as a solution is this:

local Stats = game:GetService("Stats")
local RunService = game:GetService("RunService")
local MaxDelta = 100
local LastValue

RunService.Heartbeat:Connect(function()
       local CurrentValue = Stats:GetTotalMemoryUsageMb()

       if not LastValue then
             LastValue = CurrentValue
             return
       end

       local Delta = CurrentValue - LastValue

       if Delta >= MaxDelta then
             warn("RAM Spiked")
       end

       LastValue = CurrentValue
end)

Hope it helps

1 Like
#18

I am going to test it. Ill let you know!

Update: Didnt work

#19

Sorry for the late post.

Did you ensure that the RAM actually spiked before saying it didn’t work? The script Jimmy has given you should have worked.

#20

You can take measurements on the client using Stats:GetTotalMemoryUsageMb() and check for outliers:

local t = 0.01 --how often we take measurements?
local n = 50 --how large is our sample?
--if the memory is 200MB more than average, it's a spike
local threshold = 200

local function getCurrentMemoryUsage(): number 
	return game.Stats:GetTotalMemoryUsageMb()
end

local function getAverage(samples: {number}): number
	if #samples == 0 then return 0 end
	local total = 0
	for _, v in pairs(samples) do total += v end 
	return total/#samples 
end

local measurements = {}

while task.wait(t) do
	local current = getCurrentMemoryUsage()
	if #measurements < n then 
		table.insert(measurements, current) 
		continue 
	end
	local diff = current-getAverage(measurements)
	if diff > threshold then 
		--we found a lag spike
		print("Lag Spike Detected:", current) 
		task.wait(1)
	end
	table.remove(measurements, 1)
	table.insert(measurements, current)
end

Here’s a test you can do to verify the above code:

for i = 1, 350 do Instance.new("Part", workspace) end
1 Like