Hello everybody, I want to talk about CS:GO’s server performance on
linux. Currently, the performance isn’t poor for small servers, but for
large servers that use much more CPU (>100%), the performance is poor.
This is due to a limitation in linux. Currently, Windows can use one
full thread along with another half a thread for networking. However, it
appears linux cannot use the networking thread. We’ve tried everything
we could find to get linux to use the extra thread but nothing worked
(-threads 2-4 didn’t work, etc).
Proof:
My CS:GO Surf Timer server (Windows):
http://gflclan.com/gamemann/sharex/2015-05-09_18-13-58.png
My other CS:GO Surf Timer server (Linux):
http://gflclan.com/gamemann/sharex/2015-05-09_18-14-33.png
A few months ago I switched this server from Windows to linux. The
performance was great on Windows, but on linux, the performance was very
poor. You can tell when we switched over to linux (nothing was changed
configuration-wise):
http://gflclan.com/gamemann/sharex/2015-05-09_18-17-31.png
Here are my test servers I’ve set up with the same configuration
(besides the operating systems):
Windows:
http://gflclan.com/gamemann/sharex/2015-05-09_18-18-21.png
Linux:
http://gflclan.com/gamemann/sharex/2015-05-09_18-18-34.png
For a while, the CPU usage was still capped at 100% on Windows, but I
tried a new configuration on both servers which pushed Windows up to
over 100% CPU:
bot_quota 63
bot_flipout 1 - If nonzero, bots use no CPU for AI. Instead, they run
around randomly.
sv_stressbots 1 - If set to 1, the server calculates data and fills
packets to bots. Used for perf testing.
With that being said, the linux server was still capped at 100% CPU even
with the new configuration.
Overall, I’ve seen many threads in the past addressing the poor
performance issues with linux but none of them addressed this specific
limitation. I hope Valve addresses this major issue.
Thank you for reading.
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