Blackmagic Forum

Hi!
Sorry if this is obvious, but is it possible to see the rendertime of each node to determine bottlenecks? I'm using the freeware version.

One way to do this is to watch the navigator window in to the flow and see what takes the longest to process.

If you don't see the navigator in the flow, use (v) to toggle on and off or RMB in the flow/options - show navigator.

The node will turn green as it's processing.

Not sure if there's a script that will actually print out render times of nodes, but using the navigator usually helps identify processor intensive nodes.

The attribute TOOL_LastFrameTime contains the amount of time it took a node to render the last time Fusion called for a frame.

Here's a single-line command you can paste into the Console to get the name and render time of all selected tools:

for i,tool in ipairs(tools) do print(tool:GetAttrs().TOOLS_Name..": "..tool:GetAttrs().TOOLN_LastFrameTime); end

Very Cool Bryan! This will be very helpful (especially once I can figure out how to sort it by time).

Also Bryan I had to use 'Comp:GetToolList()' instead of 'tools' for this to work on 9.1.

Its pretty rough but I created a script in my Comp level Scripts folder and it spits out a list slowest to fastest for all tools that have time greater than 0.

Code: Select all

function spairs(t, order)
    -- collect the keys
    local keys = {}
    for k in pairs(t) do keys[#keys+1] = k end

    -- if order function given, sort by it by passing the table and keys a, b,
    -- otherwise just sort the keys
    if order then
        table.sort(keys, function(a,b) return order(t, a, b) end)
    else
        table.sort(keys)
    end

    -- return the iterator function
    local i = 0
    return function()
        i = i + 1
        if keys[i] then
            return keys[i], t[keys[i]]
        end
    end
end

   
resTab = {}

for i,tool in ipairs(comp:GetToolList()) do
   resTab[tool:GetAttrs().TOOLS_Name] = tool:GetAttrs().TOOLN_LastFrameTime
end

print("======================================================")
print(" Tools from slowest to fastest (Tools with 0 ignored)")
print("======================================================")

for k,v in spairs(resTab, function(t,a,b) return t[b] < t[a] end) do
    if v > 0 then
      print(string.format("%7.2f", v) .. "  " .. k)
   end
end


Whoops! Sorry, you're right: you need to get the tool list first. I'd done so and stored it in "tools" already and forgot to replace the variable with the command.

There's a script floating around out there that sets the tools' tile color according to render time, creating a heatmap. I doubt it's been updated for Fusion 8/9, which is why I didn't mention it in the first place.

Absolutely amazing guys! Kel Philms script worked like a charm!

Kel Philm script is a great start for what I want, I don't know LUA.
I would like the script to output the same results for every frame to a file.

Could anyone help with that?

Thanks.