ReleaseNotes:98.0: Difference between revisions

Revision as of 19:24, 5 February 2014

Visual profiling and grapher that shows how Spring spends time:

You see that `Frame Grapher` which displays the last half second and its time slices:

   green are video frames
   red are simframes
   blue is swapBuffer (gpu/vsync)
   pink is lua gc

@@ Line 2: / Line 2: @@
 ==New features==
-Did some visual profiling and wrote a grapher that shows how Spring spends time:
+Visual profiling and grapher that shows how Spring spends time:
 [[File:Grapher.jpg]]
@@ Line 12: / Line 12: @@
      blue is swapBuffer (gpu/vsync)
      pink is lua gc
-It directly shows that something is wrong in GC (sure ZK creates likely a lot of garbage but it wouldn't explain what we see), so I tweaked the GC a bit and got this:
-http://springrts.com/phpbb/download/file.php?id=8601
-MUCH better already (it likely solves 90% micro lagging in ZK, but it won't solve the ones in BA what spends much less time in GC even in 96!).
-When you take a close look at the simframes you notice that there is a semi huge gap after each of it, those range from 1ms upto ~50ms (maybe something SDL or NetCode related) and are very likely one cause of microlags (additional to uneven simframe length, but that's another topic).
-Atm I don't know what Spring is doing in those gaps yet, needs further investigation.