High CPU utilization after update from net8 to net10

[jestonedev]

Description

After updating asp net core application from net 8 to net10 noticed significantly increased CPU consumption. What is the reason for this?

After the update, we noticed a significantly increased number of garbage collections.

Configuration

Image: mcr.microsoft.com/dotnet/aspnet:10.0.0
OS: Ubuntu 24.04
Runtime: net10.0.0
Architecture: x64

ServerGarbageCollection: true
ConcurrentGarbageCollection: true
GarbageCollectionAdaptationMode: Not specified

[hez2010]

.NET 10 shipped with a new variant of server GC "DATAS" to dynamically adapt your workload to minimize the memory footprint. With DATAS you can get much smaller memory consumption and lower latency, without losing throughput performance in real-world workloads.
The increasing garbage collections are expected, while the increasing CPU utilization may need some looking to see if it's in an expected range.

[agocke]

@jestonedev We would need a before/after trace to be sure. A CPU graph alone doesn't give enough info to say which piece is spending more CPU. Setting GCDynamicAdaptationMode to 0 would also help as an easy way to determine if that's the cause.

[jestonedev]

Traces:
net 8
net 10

I see a lot of finalizing events in net10:

However, they are practically absent in net8. The trace time is identical - 30 seconds:

[jestonedev]

Setting GCDynamicAdaptationMode to 0 would also help as an easy way to determine if that's the cause.

I set GCDynamicAdaptationMode to 0 and it didn't help

[jestonedev]

The same time period last (net8) and this (net10) Monday. CPU degradation is over 50%