Implement sliding window scale logic.

[lzaiats]

I have been testing LiteNetLib, Lidgren-gen3 and Lidgren-old (the one from Google Code) and Lidgren-old is beating the competitors by far... On my test I have 750 clients connected to a single server instance, receiving ~15 reliable msgs/s and ~100 unreliable msgs/s and Lidgren-old can handle all this data perfectly! Using the same "game code" but using Lidgren-gen3 or LiteNetLib the test "fails" between 100 and 120 clients... Maybe I am missing something with LiteNetLib API, so I can achieve better performance... Do you have any idea where I am doing wrong with your Lib? If you need I can share the code :)

• My test is using my area of interest management layer, so it can efficiently send to clients only data important to them. Only using this technique I was able to achieve 750 clients on a single server :) Every client is also sending ~15 unreliable msgs/s (movement messages)

Thanks and keep the awesome work!

[RevenantX]

@lzaiats Hi!

? If you need I can share the code :)

Can you show minimal sample code that works slower than Lidgren-old?

[lzaiats]

Basically it is UDP congestion the problem.. Lidgren-old appears to drop less packets than LiteNetLib, for example... I will reproduce a little sample code, with LiteNetLib, Lidgren-gen3 and Lidgren-old so you can see the "thing" on your local machine ;)

BTW, i've implemented a custom NetSerializer that use MessagePack (the optimized from neuecc) for serialization and it works great! Maybe it can be usefull to other LiteNetLib users ;)

[lzaiats]

Hi @RevenantX !

Here is the simple benchmark I made... It sends reliable and unreliable messages and count sent and received messages... LiteNetLib reliable performance is not good compared to Lidgren-old! On my "game project" after some time, the clients simply stops receiving reliable instantiate messages and the game stops working... Another important point to mention is the memory consumption... Lidgren-old test is almost not using memory allocations at all, while LiteNetLib test uses > 2Gig...

Here is the results:

Testing Lidgren-old...
Processing...
CLIENT SENT -> Reliable: 261800, Unreliable: 748000
SERVER RECEIVED -> Reliable: 261800, Unreliable: 748000

---

Testing LiteNetLib...
Processing...
CLIENT SENT -> Reliable: 262500, Unreliable: 750000
SERVER RECEIVED -> Reliable: 51215, Unreliable: 750000

UDPLibBench.zip

[RevenantX]

@lzaiats thank you! I will investigate this. Something wrong with send speed.

[RevenantX]

@lzaiats high memory consumption caused by packet pooling. I think i must add some limits to pooled packets.

[mgamache]

By staring a second client on the same machine I was able to double the bandwidth transfer on the same connection so this suggests a rate limit inside each client. Would a bounty help you find the time to work on this issue?

[RevenantX]

@mgamache i know why this problem exits) As i said before - this because i don't implemented "sliding window scale" logic. This requires some time to implement.

Would a bounty help you find the time to work on this issue?

Donations always help to find the time to work on library entirely :) But i can't promise fast fix(implementaiton) right now, because i'm working on two projects. But soon (end of december) i will have some time for library features and improvements.

[Saishy]

Hey, remember me?

So was going to ask if you want to share profits on releasing https://github.com/Saishy/TinyBirdNet-Unity at the asset store.
I was intending it to be free for free projects and paid for commercial ones. (still open source tho)