Traben-0
[BUG] Huge lag spikes on player join on specific server
Describe the issue
- What happened? I'm experiencing huge lag spikes when players join server's lobby.
- What were you doing when it happened?
Playing on server
revage.net. Open FPS graph (F3+2) and observe it while staying in the lobby while players are joining. - Does this issue also occur with OptiFine? [yes/no] I don't use OF.
Screenshots
Crash log
No crashes.
My setup:
- Minecraft version: 1.21.4
- ModLoader: Fabric
- ETF Version: 6.2.9
- Does the issue persist with only ETF installed?: Yes, while testing I was only using ETF and ViaFabricPlus (the server is outdated)
- Have you checked the FAQ in the Readme, or Discord, to see if it is a known issue?: Yes, I didn't find any mentions of this issue anywhere.
- Resource packs applied: None
I also was trying to reproduce this issue on a local 1.21.4 Fabric server but it's not reproducible in that case. Also I've noticed that this lag only happens when player's spawn point in your FOV, so it doesn't happen if you watch in opposite direction.
do you know how to use the spark mod to get a client profile? one of those would be very handy
Looks like I found the source of problem. Spark profile. https://github.com/Traben-0/Entity_Texture_Features/blob/17d4725a2eed8ca05e12a0c350a80b0c5f46028a/common/src/main/java/traben/entity_texture_features/features/player/ETFPlayerTexture.java#L107 Lags are coming from texture downloader (is it done on render thread?).