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IDProjectCategoryLast Update
0011943AI War[All Projects] Crash/ExceptionJul 13, 2013 1:33 pm
ReporterLordSlothAssigned Tokeith.lamothe 
Severityminor 
Status assignedResolutionopen 
Product Version7.001 
Fixed in Version 
Summary0011943: Unhandled Errors Related to Reinforcement Logging
DescriptionEdit: if I do nothing, the unhandled errors get thrown in at exactly 23:12:18.
If I kill enough ships, I avoid said errors.
If I turn off reinforcement logging before or during the unhandled errors, problem avoided.

I had a singleplayer game of AI War going on, when I got these unhandled errors. I'm not certain, but I believe it is related to Samuva- NGF.

I have an incoming CPA, but decided to throw a spire city hub up on Hacedre. While this was going on, the command station on Samuva went down.

I have a save from before the errors, and one after. The one after immediately resumes throwing errors. I'm attempting to recreate

Step 1: Take colony ship on Hacedre, and put up the Spire City Hub near the Command Station there. Assign the twenty MK3 engineers on control group 3.
Step 1 Alternate: Do not assign engineers

Step 2: Ignore the incoming retaliation until they're already on Samuva. Then gather all the transports on Bihagyi and send them in to Samuva. Activating golems or not doesn't seem to matter.

Step 3: Unhandled Errors do not occur.

Step 4: Zipping save from before, after, and log.
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LordSloth

Jul 7, 2013 3:54 pm

reporter  

Uploads.7z (1,423,418 bytes)

keith.lamothe

Jul 8, 2013 4:31 pm

administrator   ~0033087

Yep, more memory issues.

LordSloth

Jul 13, 2013 12:11 am

reporter   ~0033110

The integers, she cannae take any more, captain.

Reinforcement Logging. Turning off reinforcement logging prevents the unhandled errors.

Should I open another ticket and close this one?

keith.lamothe

Jul 13, 2013 10:25 am

administrator   ~0033113

Reinforcement logging shouldn't be actually causing the memory problem so much as highlighting it (by pushing it just over the edge), but yea, it's not something you necessarily want on all the time or on in heavy-on-the-computer situations.

You can leave this ticket open and maybe amend the title to say (related to reinforcement logging).

TechSY730

Jul 13, 2013 12:00 pm

reporter   ~0033114

Hmm, considering how many short lived objects logging tends to produce, think maybe the reinforcement logging is fragmenting the memory so much that it is slowing down garbage collections so much that the "Too much GC, start freaking out" thing starts getting triggered (OutOfMemoryExceptions, or worse, just a runtime environment crash)?

Yea, a good GC should be able to deal with fragmented memory caused by lots of short lived object allocation, but I think we established that the version of Mono this version of Unity comes with doesn't have a good GC. ;)

keith.lamothe

Jul 13, 2013 12:54 pm

administrator   ~0033115

logging isn't actually creating short-lived objects, and it reuses its own buffers, but when the buffer needs to expand that causes a new allocation (the old one should be GC'd, but you know how that goes) and the new one can be pretty large in a case like this.

TechSY730

Jul 13, 2013 1:33 pm

reporter   ~0033116

Ever consider taking and examining a heap dump at times memory usage is high?

I have a strong feeling you have already, but I just want to check, as heap dumps are so useful. ;)

Issue History

Date Modified Username Field Change
Jul 7, 2013 3:54 pm LordSloth New Issue
Jul 7, 2013 3:54 pm LordSloth File Added: Uploads.7z
Jul 8, 2013 4:31 pm keith.lamothe Note Added: 0033087
Jul 8, 2013 4:31 pm keith.lamothe Assigned To => keith.lamothe
Jul 8, 2013 4:31 pm keith.lamothe Status new => assigned
Jul 13, 2013 12:11 am LordSloth Note Added: 0033110
Jul 13, 2013 12:13 am LordSloth Description Updated View Revisions
Jul 13, 2013 10:25 am keith.lamothe Note Added: 0033113
Jul 13, 2013 12:00 pm TechSY730 Note Added: 0033114
Jul 13, 2013 12:42 pm LordSloth Summary Unhandled Errors => Unhandled Errors Related to Reinforcement Logging
Jul 13, 2013 12:54 pm keith.lamothe Note Added: 0033115
Jul 13, 2013 1:33 pm TechSY730 Note Added: 0033116
Apr 14, 2014 9:28 am x4000Bughunter Category Bug - Crash or Exception => Crash/Exception