Server infrastructure? What makes POE run so well?

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stnikolauswagne wrote:

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Dxt44 wrote:

There is really not much to talk about, like why do you think calculation should be heavy in this game in the first place. I really struggle to answer this.

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The calculations are heavy because depending on the build it involves calculating thousands of projectiles a second, each of which leaves a variety of debuffs that may or may not stack on hundreds of mobs, each of which has a chance of dropping loot, all of that on 30 ticks/sec.

The feat of scaling the instances alone is impressive, do they dynamically update their resource allocation when stuff starts getting hectic? Is there pre-estimations going on about how ‚crazy‘ the map is going to be? Are builds taken into account?

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Dxt44 wrote:

It is relevant, because in my long experience with online games, Path of Exile gave me the worst online experience from all, including community servers.

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stnikolauswagne wrote:

The calculations are heavy because depending on the build it involves calculating thousands of projectiles a second, each of which leaves a variety of debuffs that may or may not stack on hundreds of mobs, each of which has a chance of dropping loot, all of that on 30 ticks/sec.

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Imaginaerum wrote:

my man, no it hasn't. these forums are getting worse to read as the game ages...

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denyess wrote:

Exactly! It's a not a trivial task to efficiently make even a simpler website run smoothly for a lot of users without over allocating resources. I just can't imagine what you have to do to make a game like this run smoothly with the approach they chose of handling most if not all events server-side! As in run smoothly and not effectively losing money on the solution alone

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Dxt44 wrote:

That's good one my friend. I understand that you don't have much knowledge about optimizing things, but static data like that don't have to be calculated real time.
If you have free game, who anyone can play, approach like that would cost you more than you make. Lol

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stnikolauswagne wrote:

How exactly do you pre-calculate the collision of a projectile without knowing where the player aims that projectile? What data here is even static?

1) The Projectile count potentially fluctuates with things like headhunter stacks which are gained semi-randomly

2) The damage ranges often depend on things like distance from the mob, chain count, as well as (de)buffs on the player

3) The loot drops are affected by map modifiers and IIQ from the player, which might update in real time through one of the scarabs

If you are actually a domain expert feel free to give some technical detail to show what I am missing, I‘m a Software Engineer by profession but my field of expertise is mostly process optimization and logistics so I rarely deal with these sorts of low-level math things.

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Dxt44 wrote:

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stnikolauswagne wrote:

How exactly do you pre-calculate the collision of a projectile without knowing where the player aims that projectile? What data here is even static?

1) The Projectile count potentially fluctuates with things like headhunter stacks which are gained semi-randomly

2) The damage ranges often depend on things like distance from the mob, chain count, as well as (de)buffs on the player

3) The loot drops are affected by map modifiers and IIQ from the player, which might update in real time through one of the scarabs

If you are actually a domain expert feel free to give some technical detail to show what I am missing, I‘m a Software Engineer by profession but my field of expertise is mostly process optimization and logistics so I rarely deal with these sorts of low-level math things.

Where did I say that you can pre-calculate something like when collision will happen OMEGALOL?
Question you ask are weird, you keep things like that out of the tick rate and you good. Simple like that.

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I understand that you don't have much knowledge about optimizing things, but static data like THAT don't have to be calculated real time.

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The calculations are heavy because depending on the build it INVOLVES CALCULATING THOUSANDS OF PROJECTILES A SECOND, each of which leaves a variety of debuffs that may or may not stack on hundreds of mobs, each of which has a chance of dropping loot, all of that on 30 ticks/sec.

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stnikolauswagne wrote:

I'm pretty sure you are just outright wrong on stating that collision detection is decoupled from tickrate, in Affliction league it was pretty easy to make the server chug by just holding down Tornado Shot in a tanky map.

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stnikolauswagne wrote:

If you actually know what you are talking about why are you being so condescending instead of just impressing us with your technical knowledge on the topic of how these sorts of things are done under the hood?