What's the best way to diagnose server lag?

We use spark, but I have no idea how to read the reports. Turning timings on kills our server. I'm at a loss for how to figure out what keeps on causing lag on the server, if it's network lag, or just the server plugins causing lag
15 Replies
Admincraft Meta
Admincraft Meta•2y ago
Thanks for asking your question!
Make sure to provide as much helpful information as possible such as logs/what you tried and what your exact issue is
Make sure to mark solved when issue is solved!!!
/close !close !solved !answered
Requested by ohsogamer#0
ProGamingDk
ProGamingDk•2y ago
Spark, send it here
OhSoGamer
OhSoGamerOP•2y ago
I can't! It won't load 😦 https://mcpaste.io/16ae74be336558fb
MCPaste.io
A easy to use Paste site for Minecraft Server logs.
OhSoGamer
OhSoGamerOP•2y ago
when running /spark profiler open
Discount Milk
Discount Milk•2y ago
Don't do open Just do /spark profiler --timeout 300, do whatever it is to make your server lag, send the report at end of 5 minutes
OhSoGamer
OhSoGamerOP•2y ago
spark
spark is a performance profiler for Minecraft clients, servers, and proxies.
Admincraft Meta
Admincraft Meta•2y ago
Spark Profile Analysis
These are not magic values. Many of these settings have real consequences on your server's mechanics. See this guide for detailed information on the functionality of each setting.
✅ All good
Analyzed with no recommendations.
Requested by ohsogamer#0
OhSoGamer
OhSoGamerOP•2y ago
does anything here stand out?
ProGamingDk
ProGamingDk•2y ago
theres no lag here nada nothing
Discount Milk
Discount Milk•2y ago
What kind of lag are you guys having issues with?
snowznz.bak
snowznz.bak•2y ago
Oh my god update your paper 😭😭😭 It’s up to like build 100 and something now 1. Maybe don’t use 18GB of ram, try 8-12GB 2. Set xms and xmx to the same value
Louis_Dew
Louis_Dew•2y ago
I get the exact same error when running that command
1who¡ssus?
1who¡ssus?•2y ago
There's high ping That might be the lag source? 150ms average
ProGamingDk
ProGamingDk•2y ago
120 isn't high for mc Unless it's super competitive pvp
1who¡ssus?
1who¡ssus?•2y ago
Ah I see

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