techy question

BearBeard

as a server owner, I am curious, do you use something interesting to handdle the possible flood of frag logs when people (anna) votes , 1-on-on-joust or andAction maps ?
I was thinking, poor cpu's ^^

snowguy

The logs from frags don't seem to affect the cpu very much. There is a lot more log spam when there are issues like no playerstarts available, or accessed none errors. Even with that excessive spam it doesn't seem to bother the cpu very much.

Some years ago, something caused enough spam in my server log to make the log file size too large between checks, by the ucc.init script from ASU, that it automatically restarted the server believing the server was stuck in a loop but it was so long ago now I can't remember what caused it. Whatever it was, map or mod, I must have just removed it from the server. There is an option in ucc.init to increase the MaxLogFileSize but mine is still set at the default of 1024.

The biggest issue, besides lots of players, for the cpu seems to be maps with lots of moving items. I had to remove both ctf-foosball and ctf-toywars because they ran the cpu too high with a full server.

BearBeard

very interesting to read!

Nemrut

@snowguy isnt there a way to make ur own-customized driver for logging? So the logs are not created in the same server as phsycal files, but queued to send POST to remote service, such as AWS?

BTW I wonder if eipc games opened the source of UT99.

EA Games opened source for C&C Generals Zero Hour (playing it since 2003, good old game) and now ppl are activly contributing to it

Nemrut

But no matter if you can or cannot create ur own logger driver - if you can set the path to the logs, you just set them to /dev/something and then some service in the server handles it. Or, you mount a different server to your game server to /dev/someting and your CPU does absolutelly NOTHING with logs (talking about IO operations)

Ooper

Did a stress test a while back to test how much writing to stat logs affects performance, this made a 357mb stat log in ~ 1 minute gameplay(pug logs 15-20 minute games ~ 1mb for context), it spammed 1000 lines of crap every server tick on a server at 144 tickrate. Log event string got called 8 414 033 times, took a total of 0.029757 seconds, slowest part was StatLogFile.FileLog which took 0.067469 seconds for the same amount of calls.

Log: 1, Time:   0.121118, Own:   0.002504, Callees:   0.118614, MaxTime: 0.000026905, AvgTime: 0.000014395, AvgOwn: 0.000000298, AvgCallees: 0.000014097, AvgCalleeCalls: 1000.000, Calls:     8414, Name: "UTStatsLite.UTStatsLite.pTest1" }, {
Log: 1, Time:   0.118615, Own:   0.014446, Callees:   0.104169, MaxTime: 0.000006294, AvgTime: 0.000000014, AvgOwn: 0.000000002, AvgCallees: 0.000000012, AvgCalleeCalls:    3.000, Calls:  8414033, Name: "Engine.StatLogFile.LogEventString" }, {
Log: 1, Time:   0.029757, Own:   0.029757, Callees:   0.000000, MaxTime: 0.000000575, AvgTime: 0.000000004, AvgOwn: 0.000000004, AvgCallees: 0.000000000, AvgCalleeCalls:    0.000, Calls:  8414033, Name: "Engine.StatLog.GetTimeStamp" }, {
Log: 1, Time:   0.006944, Own:   0.006944, Callees:   0.000000, MaxTime: 0.000000335, AvgTime: 0.000000001, AvgOwn: 0.000000001, AvgCallees: 0.000000000, AvgCalleeCalls:    0.000, Calls:  8414033, Name: "Engine.StatLogFile.FileLog" }, {
Log: 1, Time:   0.067469, Own:   0.003229, Callees:   0.064240, MaxTime: 0.000006282, AvgTime: 0.000000008, AvgOwn: 0.000000000, AvgCallees: 0.000000008, AvgCalleeCalls:    1.000, Calls:  8414033, Name: "Engine.StatLogFile.FlushLog" }, {
Log: 1, Time:   0.064240, Own:   0.064240, Callees:   0.000000, MaxTime: 0.000006281, AvgTime: 0.000000008, AvgOwn: 0.000000008, AvgCallees: 0.000000000, AvgCalleeCalls:    0.000, Calls:  8414033, Name: "Engine.StatLogFile.FileFlush" }

BearBeard

Ooper cooool. machines are wesome.