very high cpu usage T_T

[sk911]

PC:
cpu amd 3690x 24core 48threads
ram 128GB
harddisk 1TB nvme pcie4.0

Server:
local bridge none
security Nat yes
DHCP yes 172.16.0.0/23
Nat function none

User：
250-300 ip
15MB/s uploading speeding(ISP 20MB/s uploading limit)
CPU 90%-100%

why?

[solo]

User：
250-300 ip

300 simultaneous users?

[sk911]

version 4.27 build 9668

[sk911]

User：
250-300 ip

300 simultaneous users?

same user id and same password
at the same time

[solo]

User：
250-300 ip

300 simultaneous users?

same user id and same password
at the same time

So, 300 simultaneous connections, actively transferring data?

[sk911]

yes

[solo]

SoftEther has awesome features, compatibility and performance, except for scalability unfortunately

...

vpn-clients.png

...

It should be fine below 250 active clients, source https://www.researchgate.net/publicatio ... networking

Try out SoftEther developer edition, a lot has changed since the above publication.

[shakibamoshiri]

good article, but I do not think it is a good compression
- WireGuard has kernel support
- OpenVPN is old enough and stable
- ZeroTier is pear to pear not a client to server
- Tinc (I do not know about it)

SoftEther in its own category is the best. similar features with other tools are not free.
I think form the beginning they did not design it for enterprise uses cases and main focuses are on
- passing firewalls
- ease of use
- multi-protocols

There are many projects on Github, not as great as SoftEther, but they have more starts because not everyone needs a such VPN.
Hope it gets more attention and funding/sponsoring to get better.

###

It is better not register more than 300 users per a VM or machine since near 1/4 or 1/3 will connect simultaneously. (100)
Or at most 200 users simultaneously which means not more than 600 users registered
So scaling-out (more instance) is a better choice than scaling-up (more resources).