Dwarf Fortress Bug Tracker - Dwarf Fortress
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IDProjectCategoryView StatusDate SubmittedLast Update
0007119Dwarf FortressDwarf Mode -- Embark/Setuppublic2014-07-12 00:592015-01-20 11:13
Reportervomov 
Assigned Tolethosor 
PrioritylowSeverityminorReproducibilityalways
StatusresolvedResolutionunable to reproduce 
PlatformWindowsOSOS Version8.1, x64
Product Version0.40.02 
Target VersionFixed in Version 
Summary0007119: Excruciatingly slow, for no apparent reason
DescriptionThis is my second attempt at a fort, and the second time the fort became excruciatingly slow (10fps) BEFORE the first migrant wave. I've not opened any caverns, but am getting cave moss for some reason. Since this has not happened before (I usually have 7*7 embarks with >100 dwarfs and moving water with 40-60fps), and this is the second time this happened, I'm starting to wonder if this is a bug. Could anyone confirm?

Save: http://dffd.wimbli.com/file.php?id=8904 [^]
Steps To Reproduce1) load the save
2) see the fps-ticker
Additional Information
TagsNo tags attached.
Relationships
related to 0006549new  Fortress unretirement causes lag / slowness with military usage 
Attached Files
Issue History
Date ModifiedUsernameFieldChange
2014-07-12 00:59vomovNew Issue
2014-07-12 09:13FootkerchiefNote Added: 0025981
2014-07-12 09:13FootkerchiefAssigned To => Footkerchief
2014-07-12 09:13FootkerchiefStatusnew => needs feedback
2014-07-12 09:13FootkerchiefRelationship addedrelated to 0006549
2014-07-13 00:40vomovNote Added: 0026095
2014-07-13 00:40vomovStatusneeds feedback => assigned
2014-07-14 04:13vomovIssue Monitored: vomov
2014-07-15 15:27eliotcougarNote Added: 0026546
2014-07-15 15:28eliotcougarNote Edited: 0026546bug_revision_view_page.php?bugnote_id=0026546#r9880
2014-07-15 15:43thvazNote Added: 0026547
2014-07-16 04:41vomovNote Added: 0026611
2014-07-16 05:06thvazNote Added: 0026613
2014-07-16 05:55vomovNote Added: 0026620
2014-07-16 05:55vomovNote Edited: 0026620bug_revision_view_page.php?bugnote_id=0026620#r9915
2014-07-16 05:55vomovNote Edited: 0026620bug_revision_view_page.php?bugnote_id=0026620#r9916
2014-07-16 07:27thvazNote Added: 0026629
2014-07-16 09:44vomovNote Added: 0026640
2014-07-16 09:45thvazNote Added: 0026641
2015-01-20 08:11vomovNote Added: 0032012
2015-01-20 11:13lethosorNote Added: 0032015
2015-01-20 11:13lethosorStatusassigned => resolved
2015-01-20 11:13lethosorResolutionopen => unable to reproduce
2015-01-20 11:13lethosorAssigned ToFootkerchief => lethosor

Notes
(0025981)
Footkerchief   
2014-07-12 09:13   
By "second attempt" do you mean you un-retired or reclaimed it?
(0026095)
vomov   
2014-07-13 00:40   
Completely new Fort, same world. I usually maintain copies of a world, and backups of my saves.
(0026546)
eliotcougar   
2014-07-15 15:27   
(edited on: 2014-07-15 15:28)
Well... I did the same on my own - played a fort, lost it by having a gobbo siege and opening a circus simultaneously... The game went to 1-2fps on a 3.5GHz Core i5... There were approximately 65 hostile units, including clowns... LOL

After that I've settled a fort right adjacent to the one with clowns to see if they are able to migrate from one part of the world map to the other...

I've noticed the same symptoms you describe here: cave moss grows inside even before any caves were opened, and fps is much lower than in the first fort... I get 180+fps on a fresh embark and less than 100fps on the "second fort" on the same map (NOTE: the same 16x16 tile of the world map), same biome, same river...
(0026547)
thvaz   
2014-07-15 15:43   
Maybe its related with the overpopulation Toady fixed today...I got one world with one billion humans...look at the populations of this world.
(0026611)
vomov   
2014-07-16 04:41   
Just checked, and there is an abandoned fort very close by, so that might have something to do with it. A fort in another area does not seem to have the same problem, even if I up the size to 7x7 and invite the circus to town (40fps after the clown act starts).
(0026613)
thvaz   
2014-07-16 05:06   
But there is some race with population above 1 million?
(0026620)
vomov   
2014-07-16 05:55   
Populations according to legends export:
231132 Dwarves
202419 Humans
35382 Elves
235927 Goblins
1945 Kobolds
Total: 706805

Near one million individuals, which seems like quite a lot, but is not close to the astronomical numbers as caused by the population bug Toady the Great fixed.

Edit: typo
(0026629)
thvaz   
2014-07-16 07:27   
What is the size of the world? Worlds above small aren't working very well. Toady recommended to not play in them until he does some optimization.
(0026640)
vomov   
2014-07-16 09:44   
I don't think I messed with the standard settings, so it should be on 'medium'. I'm not sure if that has anything to do with the fort slowing down, though...

The existence of cave moss and the abandoned fort in the same region might be indicative of something spilling over from fort-to-fort. Also, the detail that a new fort in another region, but the same world, does not experience the extreme slowing down, does also indicate it is likely it is somewhat region-based.
(0026641)
thvaz   
2014-07-16 09:45   
Now the events of the world are played in real time. As a medium world has many things happening, it slows downs your fps at fortress mode. This is known. Try to play at small worlds for a while.
(0032012)
vomov   
2015-01-20 08:11   
This has been quite some time ago, and I think this issue can be 'closed'. I've not seen the same behaviour in the latest version (0.40.24). I abandoned a fort after breaching the cavern, started a new fort right next to it, and didn't see the massive slowdown.
(0032015)
lethosor   
2015-01-20 11:13   
Yeah, there have been a number of performance improvements since then (e.g. 0.40.05). Since this save isn't compatible with recent versions of DF, it would be best for specific performance-related issues to be reported separately.