Neutrino: table component layout performance about render HOT 5 CLOSED

I changed reconcile time threshold to 0 to see all layout calls. Every time a new UITableView cell should be displayed, the layout is called 2 times for facebook feed.

UINode.reconcile (11.587977) ms.
UINode.reconcile (8.062005) ms.

First time from TableComponent:210:

    disableImplicitAnimations {
      cell.selectionStyle = cellInfo.selectionStyle
      cell.mount(component: component, width: tableView.bounds.size.width)
    }

Second time from TableComponent.swift:230:

    disableImplicitAnimations {
      node.reconcile(in: prototypeView,
                     size: CGSize(width: tableView.bounds.size.width, height: CGFloat.max),
                     options: [.preventDelegateCallbacks])
    }

from render.

Is it the example with the UITableComponent or with the VC?
The node is rendered 2 times - one to determine its height and the second to render the actual cell.

from render.

I think both.
Yep I figured the reason, but it is what makes the table view laggy when scrolling. Can it be cached somehow when it is rendered first time?

from render.

@alexdrone any update on the issue?

from render.

This is now fixed in favor of a VC implementation - the abstraction is a bit lower but offers more granular perf improvements.

from render.