BTF data affects GC?

[matpuk]

Hello!

I have an app which listens for different kernel events and send them via grpc API.

Its memory profile:

(pprof) top30
Showing nodes accounting for 38387.08kB, 100% of 38387.08kB total
Showing top 30 nodes out of 36
      flat  flat%   sum%        cum   cum%
10248.80kB 26.70% 26.70% 10248.80kB 26.70%  github.com/cilium/ebpf/btf.indexTypes
 9411.69kB 24.52% 51.22% 12488.04kB 32.53%  github.com/cilium/ebpf/btf.readAndInflateTypes
 5120.13kB 13.34% 64.55%  5120.13kB 13.34%  bufio.(*Scanner).Text (inline)
 3076.35kB  8.01% 72.57%  3076.35kB  8.01%  github.com/cilium/ebpf/btf.readAndInflateTypes.func2
 2084.21kB  5.43% 78.00%  2084.21kB  5.43%  github.com/cilium/ebpf/ringbuf.(*ringReader).readRecord
 1803.82kB  4.70% 82.70%  6923.96kB 18.04%  github.com/cilium/ebpf/btf.readStringTable
 1536.22kB  4.00% 86.70%  1536.22kB  4.00%  google.golang.org/protobuf/proto.MarshalOptions.marshal
 1024.31kB  2.67% 89.37%  1024.31kB  2.67%  main.makeAgentEvent
 1024.09kB  2.67% 92.04%  3584.34kB  9.34%  google.golang.org/grpc.(*clientStream).SendMsg

And CPU one:

(pprof) top30
Showing nodes accounting for 600ms, 100% of 600ms total
Showing top 30 nodes out of 85
      flat  flat%   sum%        cum   cum%
     160ms 26.67% 26.67%      370ms 61.67%  runtime.scanobject
      60ms 10.00% 36.67%       60ms 10.00%  runtime.(*gcBits).bitp (inline)
      50ms  8.33% 45.00%       70ms 11.67%  runtime.findObject
      30ms  5.00% 50.00%       30ms  5.00%  internal/runtime/syscall.Syscall6
      30ms  5.00% 55.00%       30ms  5.00%  runtime.futex
      20ms  3.33% 58.33%       20ms  3.33%  main.getEventFileOpen
      20ms  3.33% 61.67%       20ms  3.33%  runtime.(*mspan).base (inline)
      20ms  3.33% 65.00%       20ms  3.33%  runtime.memclrNoHeapPointers
      20ms  3.33% 68.33%       20ms  3.33%  runtime.memmove
      20ms  3.33% 71.67%       20ms  3.33%  runtime.typePointers.nextFast (inline)
      20ms  3.33% 75.00%       20ms  3.33%  runtime.unlock2
      10ms  1.67% 76.67%       50ms  8.33%  github.com/cilium/ebpf/internal/unix.EpollWait (inline)

I'm wondering if BTF data present in memory affects how long GC work. 37% of CPU is way too much for me.
Is there a way to unload BTF after all programs are registered or it must present all the time my app works?