Clean up streams_sys using stream tools.

Optimize your server OS:

Set ulimit parameters on your ubuntu server

    Check ulimit with this command:
ulimit -u
    if it was 1024 then we need to increase it as follow

nano /etc/security/limits.conf

add the following lines to the end of your file:

* hard nofile 500000
* soft nofile 500000
root hard nofile 500000
root soft nofile 500000
* soft nproc 500000
* hard nproc 500000
root soft nproc 500000
root hard nproc 500000

Then save and close the file.

Next

Edit sysctl.conf - sysctl preload/configuration file (these settings has been taken from an LB that had xtream-codes installed to it)

nano /etc/sysctl.conf

add the following lines to the end of your file:

net.core.somaxconn = 6815744
net.ipv4.route.flush=1
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_moderate_rcvbuf = 1
fs.file-max = 6815744
fs.aio-max-nr = 6815744
fs.nr_open = 6815744
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_sack = 1
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_rmem = 10000000 10000000 10000000
net.ipv4.tcp_wmem = 10000000 10000000 10000000
net.ipv4.tcp_mem = 10000000 10000000 10000000
net.core.rmem_max = 524287
net.core.wmem_max = 524287
net.core.rmem_default = 524287
net.core.wmem_default = 524287
net.core.optmem_max = 524287
net.core.netdev_max_backlog = 300000
net.ipv4.tcp_max_syn_backlog = 300000
net.netfilter.nf_conntrack_max=1215196608
net.ipv4.tcp_window_scaling = 1
vm.max_map_count = 655300
net.ipv4.tcp_max_tw_buckets = 1440000
vm.swappiness=100

Then save and close the file.

run this command: $
sudo sysctl -p

Reboot your server and check it now
after reboot, run these commands again to verify your changes:
ulimit -u -> should show 500000
sudo sysctl -p -> should show the above values
fehler sysctl -p
lsmod |grep conntrack

modprobe ip_conntrack

Regards.

XtreamUI HIGH RAM FIX

You try to fix the High RAM usage with vm.happiness

I did nano 
nano /etc/sysctl.conf

search for vm.swappiness if it does not exists

add the line at the bottom !

vm.swappiness=100 ( lower the value untill it fits your needings )

then

sudo sysctl --load=/etc/sysctl.conf

IT HELPED ME ALONG with lahasa fix

apt-get install libjemalloc1
service mysql restart

Step 1.
nano /etc/mysql/my.cnf

[mysqld_safe]
malloc-lib=/usr/lib64/libjemalloc.so.1


step 2. (add line enviroment)

nano /lib/systemd/system/mysql.service

Environment=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1


Step 3.
now just restart mysql service with: service mysql restart

Edit:
I republished the sysctl.conf file as the same original file as xtream (previous settings were my server settings (128GB of RAM))
Last edited by empire on Wed Jan 08, 2020 10:45 am, edited 1 time in total.

How to fix " Failed to update GeoLite2! Please try again" error in the pannel settings :

1. Access ssh and log in as root
2. Type in :
CODE: SELECT ALL

sudo visudo

3 Modify the existing line :
CODE: SELECT ALL

xtreamcodes ALL = (root) NOPASSWD: /sbin/iptables

to look like this:
CODE: SELECT ALL

xtreamcodes ALL = (root) NOPASSWD: /sbin/iptables,/usr/bin/chattr 

and save it
4. Go back in the panel and try again to update GeoLite2

if you can install ubuntu 18.04 64 bits
you have atleast 16gb Ram
have atleast 8 cores of processor and atleast 1gb of internet