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IDProjectCategoryView StatusDate SubmittedLast Update
0006015Dwarf FortressDwarf Mode -- Reclaimpublic2012-06-12 14:062014-08-25 11:25
Assigned ToToady One 
PlatformPCOSWindows 7 Professional 64-bitOS Version6.1
Product Version0.34.11 
Target VersionFixed in Version0.40.11 
Summary0006015: Reclaiming multiple times gradually slows the game down, leather starts to appear
DescriptionI have a fort I lost multiple times to whatever reasons. After about ten attempts at getting it to stand I noticed that the average FPS was 60 for some reason. After a couple more times it was finally 4, then 0, then the game was almost completely frozen. Every frame took seconds to process.

I replicated this 3 more times with a pristine site, and every time leather started to appear all over the landscape. My last attempt, which was done with an embarking party without any items at all, the leather count on the map still reached 2000 according to the stocks screen.
Steps To ReproduceCreate a fort and abandon and reclaim it around 12 times.
Additional InformationGame was completely unmodded.
Tagscrash, Fortress, fps, lag, leather, reclaim
Attached Files

- Relationships
related to 0001181confirmedFootkerchief Items from underground cavern scattered on surface 
has duplicate 0006302resolvedDwarfu Site Crash 
has duplicate 0006400resolvedFootkerchief Creature and leather duplication on reclaim or revisit 
has duplicate 0006491resolvedKnight Otu Unusual number animals appearing near werebeast lairs freezes the game constantly 
related to 0005106confirmedFootkerchief Bandits/companions respawn/duplicate in their original location 
related to 0006549new Fortress unretirement causes lag / slowness with military usage 

-  Notes
hessuu (reporter)
2012-06-12 14:31
edited on: 2012-06-13 12:37

Savefile of the last test: [^]

Quietust (reporter)
2012-06-12 18:24
edited on: 2012-06-12 18:25

The leather is coming from subterranean animal peoples, but unless you've got a gigantic embark, you should only be getting a dozen or less per reclaim...

ag (reporter)
2012-06-13 13:27
edited on: 2012-06-14 08:15

After reclaim in that save I got 8000 amphibian men in the caves, and 400000 spider webs with the removed+garbage_collect flags (the ones set when an item is removed, but not deallocated yet). The webs do disappear as expected if I wait about 50 frames.

Profiling shows 95% load coming from unit friend-or-foe checks.

ag (reporter)
2012-06-13 13:38
edited on: 2013-04-09 19:09

Here is a complete list of stuff there: [^]

After doing a few calculations, it seems that the numbers fit a hypothesis of some things doubling on every subsequent reclaim, with resulting exponential growth.

EDIT: this link no longer appears to work -Dwarfu

warmist (reporter)
2013-03-19 13:24

Same happens if you sleep in the same fort. Unit count grows almost exponentially.
Dwarfu (manager)
2013-04-09 19:08

Redmannine's save from 0006302: [^]
Redmannine (reporter)
2013-04-10 05:04
edited on: 2013-04-10 05:06

yeah mine is a very similar problem, but has gotten to the point I cannot get an adventurer to enter the fortress site without the game crashing or locking up.

 Only noticed the 'leather explosion' after attempting another reclaim on the same site and everything was slowed down

Redmannine (reporter)
2013-05-10 10:03

I've installed DFhack to attempt to solve the problem with my fort, auto-dumping and deleting all scattered items that covered the map, as well as removing contaminates from the dwarves and remaining items. Despite doing this, the game still runs at an abysmally slow rate, the frame rate something around one frame every 30seconds if I'm lucky, most the time it seems that Dwarf Fortress will fail to respond.
caldfir (reporter)
2013-06-12 15:20

This issue appears in several ways, and seems to be related to the site re-generating items and creatures for sites, as it does with worldgen sites (like non-historical people in towns still being there when you come back, in a consistent way).

This is a problem since player sites remember EVERYTHING that is left on them, and as such on each successive load, brings back both the originals AND a generated copy of everything.
hessuu (reporter)
2014-07-09 20:51

Still present in 0.40.01.
Quietust (reporter)
2014-07-16 13:40

I tried getting this to happen in 0.40.03, but the animal people are simply vanishing altogether after the initial abandon (and don't show up again on reclaim).
hessuu (reporter)
2014-07-20 11:23

Quietust, are you getting the massive performance hit and the leather still? Because I sure did.
bralbaard (reporter)
2014-08-08 02:26

I can reproduce this in 40.06.

In 34.0x this problem was present in adventure mode as well, and in this case I reproduced it in adventure mode in 40.06, I guess the underlying problem is the same as for fortress mode.

I visited an abandoned -player created- fortress, and after sleeping there repeatedly (five or six times?) severe lag started to occur, and leather started to accumulate on the surface. Here is a save game with an unfortunate adventurer at the site, the game is hardly responsive due to lag. leather is present on the surface (but was never produced at the site) [^]

This is a rather nasty bug that had a big impact on adventure succession games in 34.11, causing some games to be abandoned completely, and severely impacting others.
Toady One (administrator)
2014-08-25 11:25

The animal people camp items can't be easily salvaged without the full army item update. I'm just going to remove the items themselves from the camps for the time being and leave a note to make sure this sort of thing doesn't happen when they return.

- Issue History
Date Modified Username Field Change
2012-06-12 14:06 hessuu New Issue
2012-06-12 14:07 hessuu Issue Monitored: hessuu
2012-06-12 14:07 hessuu Issue End Monitor: hessuu
2012-06-12 14:08 hessuu Issue Monitored: hessuu
2012-06-12 14:31 hessuu Note Added: 0022968
2012-06-12 16:42 Footkerchief Relationship added related to 0001181
2012-06-12 18:24 Quietust Note Added: 0022974
2012-06-12 18:25 Quietust Note Edited: 0022974 View Revisions
2012-06-13 12:34 hessuu Tag Attached: reclaim
2012-06-13 12:34 hessuu Tag Attached: fps
2012-06-13 12:34 hessuu Tag Attached: leather
2012-06-13 12:37 hessuu Note Edited: 0022968 View Revisions
2012-06-13 13:27 ag Note Added: 0022981
2012-06-13 13:38 ag Note Added: 0022982
2012-06-14 08:15 Footkerchief Note Edited: 0022981 View Revisions
2013-03-19 13:23 warmist Issue Monitored: warmist
2013-03-19 13:24 warmist Note Added: 0023907
2013-04-09 19:06 Dwarfu Relationship added has duplicate 0006302
2013-04-09 19:08 Dwarfu Note Added: 0023925
2013-04-09 19:09 Dwarfu Note Edited: 0022982 View Revisions
2013-04-10 05:04 Redmannine Note Added: 0023927
2013-04-10 05:06 Redmannine Note Edited: 0023927 View Revisions
2013-04-10 05:07 Redmannine Issue Monitored: Redmannine
2013-05-10 10:03 Redmannine Note Added: 0023964
2013-05-10 10:06 Redmannine Tag Attached: crash
2013-05-10 10:06 Redmannine Tag Attached: Fortress
2013-05-10 10:06 Redmannine Tag Attached: lag
2013-06-12 15:20 caldfir Note Added: 0024001
2014-01-03 10:43 Footkerchief Relationship added has duplicate 0006400
2014-01-03 10:43 Footkerchief Relationship added related to 0005106
2014-03-26 00:06 ag Issue Monitored: ag
2014-03-26 01:49 Dwarfu Assigned To => Dwarfu
2014-03-26 01:49 Dwarfu Status new => acknowledged
2014-05-28 03:11 Knight Otu Relationship added has duplicate 0006491
2014-07-09 20:51 hessuu Note Added: 0025470
2014-07-16 13:40 Quietust Note Added: 0026664
2014-07-20 11:23 hessuu Note Added: 0027039
2014-08-08 02:26 bralbaard Note Added: 0028575
2014-08-08 09:05 Footkerchief Status acknowledged => confirmed
2014-08-08 16:03 Footkerchief Relationship added related to 0006549
2014-08-25 11:25 Toady One Note Added: 0029612
2014-08-25 11:25 Toady One Status confirmed => resolved
2014-08-25 11:25 Toady One Fixed in Version => Next Version
2014-08-25 11:25 Toady One Resolution open => fixed
2014-08-25 11:25 Toady One Assigned To Dwarfu => Toady One

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