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IRC log for #minetest-dev, 2017-03-31

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All times shown according to UTC.

Time Nick Message
00:00 paramat phew
00:00 VanessaE (I still get to argue with it, but for a different reason now.)
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02:30 paramat sofar could you look at game#1678 ? i get the feeling doors was broken by a recent commit
02:30 ShadowBot https://github.com/minetest​/minetest_game/issues/1678 -- Doors do not appear in the creative inventory.
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02:49 paramat nevermind, found the cause
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12:04 glut32 I would like to know which version of irrlicht do you use on minetest mac ?
12:12 nrzkt glut32: on travis you mean ?
12:13 glut32 https://github.com/krondor-game/minetest/releases
12:13 glut32 on this build
12:13 glut32 I contacted the guy
12:14 nrzkt i don't know, it's a minetest interesting user but not official core member
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12:42 Topic for #minetest-dev is now Minetest core development and maintenance. Chit-chat goes to #minetest. Consider this instead of /msg celeron55. http://irc.minetest.net/minetest-dev/ http://dev.minetest.net/
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17:17 Krock Need MTG testers for this patch? https://github.com/minetest/minetest_g​ame/issues/1678#issuecomment-290773342
17:17 Krock Table references seem to have manipulated the groups, thus this misbehaviour
17:18 Krock s/?/:/
17:33 VanessaE I've had that happen before.
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17:33 VanessaE (in a different circumstance)
17:35 VanessaE (I had to resort to a deep copy to get around it, too)
18:04 Krock VanessaE, I expected register_item would copy the contents but apparently it doesn't :/
18:13 Thomas-S May I ask, why, when "sudo make install"ing minetest, new files are installed but deleted ones aren't deleted in /usr/local/share/minetest ?
18:27 Fixer https://github.com/minetest​/minetest_game/issues/1680
18:34 sfan5 Thomas-S: cmake only knows about the files to install, not about the files previously installed
18:34 sfan5 this is why you should use a package manager
18:34 Thomas-S oh, ok. Thanks. I solved my problem by deleting /usr/local/share/minetest. I assume this has no negative impacts?
18:35 sfan5 no
18:35 Thomas-S Thanks!
18:44 nerzhul sfan5, will fix points you mention. For the path requirement it's required by cmake itself because add_subdirectory only allow, without this argument, subdirectories, and move them outside of src make this rule invalid. What i suggest is to move the detection path in CMakeLists.txt in lib/ folder and do add_subdirectory of this part in root/CmakeLists.txt before the add_subdirectory src/, are you okay ?
18:45 sfan5 sounds good
18:45 nerzhul nice :) i'm experimenting this better approach now
18:45 nerzhul can you review #5487 ?
18:46 ShadowBot https://github.com/minetest/minetest/issues/5487 -- [CSM] Add function and chat command to disconnect from server. by red-001
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19:36 nerzhul sfan5, Krock i updated #5473 and fixed the android build :)
19:36 ShadowBot https://github.com/minetest/minetest/issues/5473 -- Update embedded jsoncpp from unk version to 0.10.6 + move libs to lib/ instead of src/ by nerzhul
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19:39 nerzhul can you review and accept it for a merge ?
19:41 Krock at least travis should be done before reviewing
19:41 nerzhul Krock, exact :)
19:42 nerzhul travis is not happy hmm
19:42 nerzhul interesting...
19:42 nerzhul my cmake version doesn't have this error
19:44 nerzhul Krock, travis is happy on 5487, the change is simple, but required for our second CSM roadmap
19:56 nerzhul merging #5490 thanks sfan5 for reopening & others to look at this
19:57 ShadowBot https://github.com/minetest/minetest/issues/5490 -- Wieldmesh: Natural orientation depending on pitch by sfan5
19:57 nerzhul and thanks to kil
19:57 nerzhul and thanks to kilbith
19:59 nerzhul oh
19:59 nerzhul github changed commiter
19:59 nerzhul i need to fix this sorry :) don't pull
20:00 nerzhul done
20:23 nerzhul what is minetest codestyle column limit ? because clang-format seems to use 80 but it's very tiny, 100 seems more reasonable no ?
20:25 celeron55 we do have this http://dev.minetest.net/Code_style_guidelines
20:25 celeron55 which is mostly written by hmmmm, but mostly valid
20:25 celeron55 it says 90 is a strict limit
20:25 nerzhul yeah i saw it and it doesn't talk about cols, just refering to linux kernel which says 80 cols except sometimes for readability
20:26 celeron55 actually it talks
20:26 nerzhul oh sorry
20:26 nerzhul misread
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20:26 nerzhul okay, i'm pushing a trivial fix on clang-format to take account of that limit
20:28 nerzhul and apply a style fix on l_client.cpp
20:28 nerzhul (which is not conflicting)
20:28 nerzhul and l_client.h
20:28 nerzhul you won't have to fix it red-002 then
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20:43 Fixer This is finished it seems, please consider reviewing https://github.com/minetest/minetest/pull/5416
20:43 Fixer Windows: Skip cmd for release builds #5416
20:43 ShadowBot https://github.com/minetest/minetest/issues/5416 -- Windows: Skip cmd for release builds by adrido
20:45 nerzhul Fixer, you have my approval, just require a second approval, from Krock maybe
20:46 Fixer nerzhul: you was too fast, also not my PR, but i'm interested to get rid of cmd window :)
20:46 Fixer i tested it
20:46 nerzhul it's more proper to not having it in releases build
20:46 Fixer on mingw crosscompile, originally it was for msvc
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20:47 Fixer nerzhul: with it you will have -DENABLE_CMD_WINDOW = 1/0 for cmake to choose
20:48 nerzhul i hope it's 0 for release :)
20:49 rubenwardy is it possible to opt-in to a cmd window, either with a setting or a different launcher? (ie: launch using bash)
20:49 sfan5 possibly
20:49 rubenwardy s/bash/batch/g
20:55 Fixer rubenwardy: why not just tail debug.txt ?
20:55 rubenwardy er - windows?
20:55 rubenwardy also, convenience
20:56 Fixer rubenwardy: in windows I found mtail, very useful if console is disabled
20:56 Fixer rubenwardy: http://ophilipp.free.fr/op_tail.htm
21:02 Fixer nerzhul: for msvc - yes, for mingw cross-compile... it will be hidden for any build by default
21:07 Fixer it seems, will check
21:10 red-002 updated #5487
21:10 ShadowBot https://github.com/minetest/minetest/issues/5487 -- [CSM] Add function and chat command to disconnect from server. by red-001
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21:52 VanessaE well, that's that.  I just evicted LuaJIT from my servers.
21:52 VanessaE too many OOM crashes.
21:53 sfan5 you probably "just" need to wait until gc64 is stable
21:53 sofar surprised you hang on this long, tbh
21:53 VanessaE I already had it compiled with gc64 enabled.
21:53 sfan5 are you sure? that mode crashed for me very often
21:53 VanessaE yup.
21:54 VanessaE doesn't matter.
21:54 sofar better lua code probably helps you more
21:54 sfan5 (crash meaning segfault)
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21:55 VanessaE sofar: I suppose it would, but if I have a machine with 16GB of RAM, by G*d I should be able to use it ;)
21:55 sofar yes but all that memory is slow if you thrash your caches with bad lua
21:55 VanessaE and besides, better code won't fix luajit stupidities like needing to be at the start of address space.
21:59 sofar shure shure
22:00 VanessaE (the code that needs help is way above my proverbial pay grade, anyway)
22:12 Fixer gc64 mode is not stable it seems, at least on minetest
22:13 Fixer i've also seen some bugreports about crashes in this mode
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23:21 VanessaE ..aaaaaaand I have to turn JIT back on.  the server's just too slow otherwise :(
23:31 Fixer VanessaE: try with usual luajit without gc64
23:31 VanessaE doesn't matter, it was crashing before, too.
23:31 Fixer VanessaE: what error?
23:31 VanessaE OOM errors in random mods
23:32 VanessaE most recently mesecons.
23:33 VanessaE 2017-04-01 01:32:41: ERROR[Main]: ServerError: AsyncErr: environment_Step: OOM error from mod 'mesecons' in callback environment_Step(): not enough memory
23:33 Fixer totally random or there are some champions?
23:33 VanessaE for example.
23:33 VanessaE lately it's been blaming mesecons, I know you personally tend to see it happen with technic_worldgen
23:34 rubenwardy #5302
23:34 ShadowBot https://github.com/minetest/minetest/issues/5302 -- Store legacy metadata separate from new item meta data by rubenwardy
23:34 rubenwardy doesn't affect serialization
23:35 Fixer VanessaE: it is inevitable, how often it happens?
23:35 VanessaE repeatedly
23:35 VanessaE as in startup, run for several seconds, crash OOM
23:37 Fixer VanessaE: thats what I had with milan's subgame + darkage, very fast oom
23:37 Fixer when i tested it last time
23:39 Fixer VanessaE: probably cheapie with dat mesecons...
23:39 VanessaE I doubt it.
23:40 VanessaE can someone at least patch the engine to show the last requested amount of RAM before the crash?
23:40 Fixer VanessaE: how much mem was at the moment of oom in that error report?
23:40 Fixer VanessaE: it shows...
23:40 VanessaE Fixer: typically in the 970 MB range
23:40 VanessaE but that doesn't tell me how much was last requested or by which mod
23:40 VanessaE (saying mesecons crashed doesn't mean mesecons was what requested the RAM)
23:40 Fixer yeah, this needs improving
23:40 Fixer also want mod profiling as in memory usage
23:41 Fixer we have cpu usage but mem usage is also needed
23:41 VanessaE what good is mod profiling if I can't run it before the crash?
23:41 Fixer VanessaE: and it OOMs each time?
23:41 VanessaE yep.
23:42 Fixer VanessaE: right after start up?
23:42 VanessaE any second now it's gonna OOM
23:42 VanessaE there it goes.
23:42 VanessaE 2017-04-01 01:42:19: ERROR[Main]: ServerError: AsyncErr: environment_Step: OOM error from mod 'mesecons' in callback environment_Step(): not enough memory
23:42 VanessaE 2017-04-01 01:42:19: ERROR[Main]: Current Lua memory usage: 947 MB
23:42 Fixer VanessaE: linux? nothing changed? anything memory intenfive nearby?
23:43 VanessaE of course linux :P
23:43 VanessaE and nothing much changes from day to day
23:44 Fixer VanessaE: if it is mesecons i would probably look through the logs who interacted with mesecons last time and maybe shut down the mod or delete offensive mapblock
23:44 Fixer VanessaE: not many options here :( if you are not developer
23:44 Fixer developer can probably debug it, profile it, etc
23:44 Fixer mod itself
23:45 VanessaE I'll be quite honest here.  I'm really getting tired of waiting for people to FIX SHIT (I don't mean Minetest engine)
23:45 Fixer VanessaE: in short, you are screwed, if you have some backup, try to revert back
23:45 Fixer VanessaE: revert back to preOOM time
23:46 Fixer revert entire map from backup
23:46 VanessaE oh hell no
23:46 Fixer VanessaE: maybe you updated some mods recently?
23:46 VanessaE fuck no
23:46 VanessaE sure, I update mods from time to time
23:46 Fixer VanessaE: updated mesecons recently?
23:46 VanessaE but this has been an ongoing problem forever
23:47 Fixer VanessaE: try older mesecons versions
23:47 VanessaE I've just updated everything, engine, game, re-compiled luajit too.
23:47 Fixer VanessaE: use simple lua
23:47 VanessaE it's running again, but who knows for how long
23:47 VanessaE simple Lua is too slow.
23:47 VanessaE 431 minetest  20   0  780936 374984  13420 S  81.4  2.3   1:24.61 /usr/bin/minetestserver --worldname Survival_World --confi+
23:47 Fixer i know it is slower, but there is not much options here, i can't even run a dreambuilder on windows on luajit
23:47 VanessaE (virtual, resident, shared)
23:48 VanessaE it's not just "slower".  it's "horrendously slower"
23:48 VanessaE my server relies heavily on technic, which is a CPU pig to beat all.
23:48 Fixer VanessaE: it is about luajit 1gb limit, if GC64 mode will work, that should fix OOM problems
23:49 VanessaE -DLUA_LIBRARY=/home/minetest/lu​ajit-2.1-gc64/src/libluajit.so \
23:49 VanessaE and that IS compiled with GC64 enabled.
23:49 Fixer strang
23:49 Fixer e
23:49 Fixer VanessaE: 64 bit library?
23:49 VanessaE of course.
23:50 VanessaE no one uses 32bit anymore
23:50 VanessaE especially on a dedicated server.
23:50 Fixer VanessaE: and you compiled 2.1.0 tree with make XCFLAGS=-DLUAJIT_ENABLE_GC64 ?
23:51 VanessaE I edited src/Makefile to turn it on, as per its instructions.
23:51 Fixer VanessaE: i have impression that it is not turned on, last time I checked I eated 4 gigabytes in GC64 before luajit segfault ._.
23:52 Fixer and you have 1gb limit
23:52 Fixer that means it is not turned on
23:52 Fixer how i did it on windows: https://github.com/minetest/minetest​/issues/2988#issuecomment-285090239
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23:54 Fixer gn
23:55 VanessaE ok, `git reset --hard HEAD` and recompiled like that ^
23:56 * VanessaE rebuilds minetest against it.  again.

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