Posted: Wed Oct 24, 2007 8:46 am Post subject: Tool tips memory leak&lag
Recently we were facing problems with lags and memory leaks. It usually started after there was more then 80 players. After that, in few hours and jumps (each jump cca 300MB), memory jumped to 3GB and server became totally unpredictible. Lags started when the memory reached over 2.5GB (after first jump).
We shut down toolstips and that problem disappeard. Server is holding around 2GB without any problem.
We have now more then 130 players in the peak and quite big data, pol allocates cca 2GB after start.
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MuadDib POL Developer
Joined: 13 Feb 2006 Posts: 830 Location: Indiana, USA
We are using latest RC5. And by shuting down tooltips Demostenes means that we changed UOFeatureEnable from 0x1a0 to 0x00 -> so we disabled little more features, but I think tooltips was the reason for memory leaks and lags.
This memory leaks are quite strange - it just "jump" in few minutes/sec from 2,250GB to 2,550+, then for few hours hold there and then "jump" again to 2850+ .., but this happens only after few hours ( we have auto restarts in 4:00am and first "jump" is in 17:00+, maybe number of players having something to do with it ).
After setting UOFeatureEnable=0x00 is everything OK server is running second day without any problems with lags or memory.
Small update: Memory is still leaking, but many times slower (cca 10x). With previous version of POL we were running (0.95) there were no problems, so we are suspecting there is some problem with new core.
MuadDib: out of curiosity, what algorhitm/memory scheme do you use for caching the tooltips? If any...
Or are the packets being generated over and over again every time any client asks for them?
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MuadDib POL Developer
Joined: 13 Feb 2006 Posts: 830 Location: Indiana, USA
Posted: Wed Oct 31, 2007 12:19 pm Post subject:
Tooltips themselves are generated if a client requests it, on the spot.
Would be nice for someone to report any difference between with a hook, and without. Might help narrow it down some too.
Tooltips themselves are generated if a client requests it, on the spot.
Would be nice for someone to report any difference between with a hook, and without. Might help narrow it down some too.
It seems that the our problem with memory "jumps" has only little to do with tooltips after all, turning tooltip off has only slown down the problem 10x +- ( as Demostenes write before me ), maybe it is in all packet hooks and tooltips was just one of most used, or maybe it is somewhere else, i dont really know, but now server can work for few days, before first memory jump occurs.
( as Demostenes write before me ), maybe it is in all packet hooks and tooltips was just one of most used, or maybe it is somewhere else, i dont really know, but now server can work for few days, before first memory jump occurs.