Profiler

Profiler

Profiler is a built in mod, activated via "profiler.load = true" in minetest.conf file.

Usage: "/profiler save" by a server admin. This makes a text file "profiler date-time.txt" to check out.

The file I (Thailand) got, is from 11.09.2019

The file contains summary and single part from all activated mods and may help to target lag source.

example

more_chests:                                            
 - on_joinplayer[1] ..................................  

with numbers for

• min µs
• max µs (leads to peaks, used for rank peaks)
• avg µs (lead to avg lag, used for rank B)
• min %
• max %
• avg % (lead to avg lag, used for rank A)

• avg : mean time making work for cpu
• peak : short but heavy usage, maybe feel lag

results

To read that you need to find out the most top 5 or 10 avg, as there where this time (11.09.2019):

• advtrains - 35.6 % avg (rank 1) and just 40.4% peak of peak max messecons (rank 5)
• pipeworks - 17,9 % avg (rank 2), depend on avg us rank 3, and its peaks 53 % strength of messecons peak = rank 2
• messecons - 12.7 % avg (rank 3), but depend on avg us rank 1, top peak rank 1
• technic - 4.6 % avg (rank 4), depend on avg us rank 4 also, peaks just 35% as of messecons, rank 7
• advtrains_train_japan - 4.6 % avg (rank 4), depend on avg us just rank 7
• default - 4.4% rank 6 ... where I stop to check, as above mods make together 75% of all cpu work ...

summary

The most avg work, mean all time through the server is on is made by mods:

• advtrains (35-40%)
• + pipeworks (18%) = sum 53-58%
• and + messecons 13%, mean sum cpu for 3 mods 66-71%

The main hard peaks are generated out from

• messecons peaks, counted here as 100% as most strong peaks
• pipeworks peaks, at least strong 50% strength of messecons
• advtrtains peaks, which are still 40% as strong like the messecons peaks
• technic peaks, have also 35% the strength like messecons peaks
• ambience then follow with 24% hard peaks compare to messecons

conclusion

There are main just 3 mods there behaviour have to be checks / reduces to get lag down.

• advtrains, with then also japan train
• messecons
• pipeworks

all others are minor effect to server.

Author

Thailand, known as Festus1965 in Forum, and Thomas or Explorer on most other servers. I played around with profiler since at least 2 years and successful reduced lag on my server basing on profiler results. There is a change possible in pipeworks reducing that mod about 50% of its impact. At advtrains I have no glue, as I dont use it, as I know its impact on servers.