Topic: Bridgewater-Brunel game no. 3

[Ranran]

https://github.com/Ranran-the-JuicyPork/simutrans-extended/commit/54290198039d2ce8f2011bcad4a74b44804acf9a
I found what seems to be a merge error in network_file_transfer.cc. Near the 160th line. I hope you can see if this has any effect.

[jamespetts]

https://github.com/Ranran-the-JuicyPork/simutrans-extended/commit/54290198039d2ce8f2011bcad4a74b44804acf9a
I found what seems to be a merge error in network_file_transfer.cc. Near the 160th line. I hope you can see if this has any effect.

Thank you for this - now incorporated.

I have been spending some time trying to deal with this problem - it is still unclear what the cause is; latest investigations seem to suggest that what was happening at least at one point was that, when the server was restarting automatically, without the "-load [savegame]" in the command line, it was failing with a segfault, whereas, when I gave the "-load server13353-network.sve" command explicitly, it would work. I have therefore managed to get the server running again by adding "-load ../server13353-network.sve" to the script - I am not sure whether this will work over the long term, but I should be grateful if people could report the result.

[freddyhayward]

I have been spending some time trying to deal with this problem - it is still unclear what the cause is; latest investigations seem to suggest that what was happening at least at one point was that, when the server was restarting automatically, without the "-load [savegame]" in the command line, it was failing with a segfault, whereas, when I gave the "-load server13353-network.sve" command explicitly, it would work. I have therefore managed to get the server running again by adding "-load ../server13353-network.sve" to the script - I am not sure whether this will work over the long term, but I should be grateful if people could report the result.

Though I can't recall any specific cases, I vaguely remember having segfaults in the past when trying to start servers without specifying -load [savegame], and that adding -load [savegame] fixed them.

[freddyhayward]

After a fairly good run for several hours after today's reset, an improvement on previous days, the server has now been down for nearly 2.5 hours.

[jamespetts]

The Simutrans-Extended instance was running on the server, but was unresponsive for reasons unknown. Now restarted.

[Matthew]

Bridgewater-Brunel has not run since the nightly restart

[jamespetts]

Bridgewater-Brunel has not run since the nightly restart

It seems to have entered a frozen state - I have now restarted it.

[Matthew]

It seems to have entered a frozen state - I have now restarted it.

Thank you for fixing this, James! 

[Matthew]

Sorry to sound like a stuck record, but the server has frozen again for the last 3 hours.

[jamespetts]

I have restarted it again.

There seems to be a persistent problem causing the server to get stuck in an infinite loop on occasions. It is not a thread deadlock, as there is high CPU usage. The trouble is that it is very difficult to think of any way of reproducing this. If anyone can find a reproduction case for an infinite loop/freeze, please post it in the bug reports forum. Thank you.

[freddyhayward]

The server has now been down for over 8 hours. I wonder if you could add a script that automatically restarts the server if the log file has not updated for 2 hours, for instance?

[jamespetts]

The server has now been down for over 8 hours. I wonder if you could add a script that automatically restarts the server if the log file has not updated for 2 hours, for instance?

I have now restarted the server. The freezes do need to be identified and fixed: the suggested script is not a permanent solution. The process can only be terminated with the kill -9 command in this state. In any event, terminating the server if the log has not been updated in 2 hours will not be sensible, since this stat will occur if nobody has played on the server for the last 2 hours.

[Vladki]

I have tried to connect to B-B, but after (long) loading the game it said that the save is incompatible, and dropped me to demo.sve. And probably crashed the server...

I run self compiled binary because the nightlies have too fresh libraries for debian. But I have no problem connecting to S-S which is on ubuntu 20.04. I suspect the libzstd to be the culprit?
Debian: libzstd1:amd64 1.3.8+dfsg-3 Ubuntu: libzstd1:amd64 1.4.4+dfsg-3

[jamespetts]

If you are self compiling, make sure that you enable zstd otherwise you will not be able to connect.