Centova Technologies Forum
Centova Cast v3 => General discussion => Topic started by: GroovinMind on December 13, 2013, 12:11:51 pm
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Hey guys. Any tips on server config settings to be able to handle large amount of listeners.?
I found this online via SomaFM suggested. Looks like he is still using shoutcast v1. I have 2.2.1 and made these changes...
From director of SomaFM
"Some notes on sc_serv v1 - you should be able to get 5000 concurrents on a decent box with no problem. You'll need to do some tuning possibly, a big issue is making sure your ulimit is set correctly. Here are some notes I have on tuning Ubuntu for sc_serv with lots of capacity:
verify that the following are all set to the default value of 1; this command will show the results:
/sbin/sysctl net.ipv4.tcp_window_scaling
/sbin/sysctl net.ipv4.tcp_timestamps
/sbin/sysctl net.ipv4.tcp_sack
We add the following to /etc/sysctl.conf :
#sc_serv tuning for sysctl.conf:
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_synack_retries = 2
fs.file-max = 798200
net.ipv4.tcp_fin_timeout=25
net.core.rmem_max=16777216
net.core.wmem_max=16777216
net.ipv4.tcp_rmem=4096 87380 16777216
net.ipv4.tcp_wmem=4096 87380 16777216
fs.file-max=798200
Then run sysctl -p to load those changed values.
#Increase the ulimit for maximum open files
#Add this to /etc/security/limits.conf
shoutcast hard nofile 10240
shoutcast soft nofile 10240
root hard nofile 10240
root soft nofile 10240
###In /etc/pam.d/su add or uncomment the line
session required pam_limits.so
These should be similar for other Linuxes.
Note that you can see a really high load on a sc_serv box and it will still stream OK.
FYI- We use Intel E3-1230 V2 CPUs in our streaming servers. You should also make sure you have a motherboard with a good ethernet chipset. We're using Supermicro SYS-5017C-LF boxes which have Intel LAN controllers. "
previously I had a issue with my setup. I got 350 concurrent listeners and my shoutcast shutdown. Turns out my ulimit was 1024. So I changed that to 10240 and also did the above config settings. (I think they override your regular ulimit config file?)
anyway anyone here run a box that has a lot of concurrent listeners? Any tips you can give on certain settings? I learned the hard way that setting the listener amount in centovacast does not do any good if your system settings are not configed properly.
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I should also mention i havent hit over 350 again to see if the above worked. I have been hangin around 200-300 recently. Hopefully i can get that up to see if I can go past that 350 wall I had before
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No one has any tips on configuring your server?
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I need this information too.
Anybody has tried it?
GroovinMind, have you contacted with SomaFM?
best!
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I have done the above to my debian server , yes.
So far so good. I havent gotten past 350 to really tell if its helping.