Bay 12 Games Forum

Please login or register.

Login with username, password and session length
Advanced search  

Author Topic: Sudden FPS drop?  (Read 4339 times)

9tails

  • Bay Watcher
    • View Profile
Sudden FPS drop?
« on: March 12, 2016, 12:51:33 pm »
Is there some reason that a relatively new fort with 30 dwarves would go from a nice stable 70 DPS down to _9_ suddenly and for no known reason?  I had a very nice fortress ticking along when it suddenly become unplayable.
« Last Edit: March 12, 2016, 01:06:56 pm by 9tails »
Logged

Edward_Tohr

  • Bay Watcher
  • Stuffs. Yarr!
    • View Profile
Re: Sudden FPS drop?
« Reply #1 on: March 12, 2016, 01:18:11 pm »
Do you have a non-pet-passable door somewhere?
Logged
Quote from: Quietust on May 07, 2016, 08:34:48 pm
Quote from: DolosusDoleus on May 07, 2016, 06:10:55 pm
Quietust, what would we ever do without you and your endless knowledge of v0.23a?
I was going to say "fail spectacularly", but you guys seem to be doing a great job of that already.

PatrikLundell

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #2 on: March 12, 2016, 01:37:21 pm »
As Edward_Tohr said, there is a bug with animals trying to path through animal locked doors that cripples the FPS. The animal does not need to be a domestic one either.

Edit: Worked around by unlocking the door or killing the FPS killer.
Logged

9tails

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #3 on: March 12, 2016, 02:08:46 pm »
Hm. I don't think I set any doors to animal-impassible around the time i lost the FPS, but I'll keep an eye out for that in the future.  Thanks.
Logged

Broseph Stalin

  • Bay Watcher
  • Dabbling Surgeon, Proficient Butcher.
    • View Profile
Re: Sudden FPS drop?
« Reply #4 on: March 12, 2016, 02:59:33 pm »
Have you hit the caverns? When my FPS drop suddenly crashes one of the first things I check for is a fiery FB hugging trees underground.
Logged

Vuohijumala

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #5 on: March 14, 2016, 04:15:21 am »
I experienced a sudden slowdown at one point. The reason behind it was one of my herbalists stuck in a tree. I guess he was constantly trying to path his way out of there. As soon as I felled the tree, everything went back to normal again.
Logged

Uggh

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #6 on: March 14, 2016, 04:37:30 am »
You might also have defined a zone with some unpassable tiles (e.g. tiles in open space). I had a sudden drop when I tried to make a duck pond and set a zone covering the space above the water.
Logged

Wilm0chimp

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #7 on: March 14, 2016, 05:51:19 am »
Do you have a prison? I suffered a temporary big fps hit when my booknerd was jailed, causing constant jab cancellation spam. My log was "cancelled because jailed x 5608" so the guy was going apeshit trying to path to his office but couldn't.
Logged

hanni79

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #8 on: May 16, 2016, 09:40:10 am »
Huh, I also just got an Sudden FPS death, dropped from 30(23) down to 2(2) Oo ...

... and I can't find any obvious pathing problems, announcements also are inconclusive. I hope I can figure this out, 2 fps is unplayable  :-[
Logged

Findulidas

  • Bay Watcher
  • [NATURAL_SKILL:OFFTOPIC:5][NOTHOUGHT]
    • View Profile
Re: Sudden FPS drop?
« Reply #9 on: May 16, 2016, 10:03:51 am »
You should take a look at this. Its a page about reducing fps but some of it is also advice for not getting sudden fps drops. Things like giving your engravers a huge area to smooth easily cripples fps by a huge marigin by itself.

Logged
Quote from: Archereon on April 08, 2016, 01:16:38 pm
...wonderful memories of the creeping sense of dread...

Adam Mantine

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #10 on: May 16, 2016, 01:39:26 pm »
What about flowing water or magma? Any of that? Especially any that's recently been rerouted? I've heard that that can cause fps problems too.
Logged

hanni79

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #11 on: May 16, 2016, 02:29:48 pm »
Found my problem -.-

I have a danger room and one of my Soldiers dodged into a forbidden door. Then he went to the wrong side ( the other side was also defined as barrack). After it closed, he wasn't able to get out again, but it seems forbidden doors can be dodged into.....
Logged

PatrikLundell

  • Bay Watcher
    • View Profile
Re: Sudden FPS drop?
« Reply #12 on: May 16, 2016, 05:27:20 pm »
Since it's possible to tunnel through walls on a dodge it wouldn't be strange to do it through a mere wall... I think someone said the code only checks the landing tile on a dodge, not the tile(s) in between.
Logged

Quietust

  • Bay Watcher
  • Does not suffer fools gladly
    • View Profile
    • QMT Productions
Re: Sudden FPS drop?
« Reply #13 on: May 16, 2016, 06:48:49 pm »
Lag can also arise if a Werebeast is scheduled to invade your fortress but is unable to arrive for various reasons (such as the wrong phase of the moon).
Logged
P.S. If you don't get this note, let me know and I'll write you another.
Quote from: Lord Dakoth on September 17, 2009, 10:47:58 pm
It's amazing how dwarves can make a stack of bones completely waterproof and magmaproof.
Quote from: Neruz on September 18, 2009, 06:58:26 am
It's amazing how they can make an entire floodgate out of the bones of 2 cats.

Regu1us

  • Escaped Lunatic
    • View Profile
Re: Sudden FPS drop?
« Reply #14 on: March 11, 2020, 12:23:33 am »
For me I had walled someone into a small space (with some werebeasts)  and they went meloncholy. After the werebeasts transformed and killed him, FPS went back to normal. So I suspect differences in meloncholy pathfinding from normal caused him to reprocess a lot. There were a lot of doors in the space, which may have been locked. So that might have affected it.
Logged