import multiprocessing
import streamlit as st

def get_optimal_workers():
    """Get optimal number of workers based on CPU cores."""
    return max(multiprocessing.cpu_count() - 1, 1)

def display_performance_metrics():
    """Display current system performance metrics."""
    st.sidebar.markdown("### System Performance")
    available_cores = multiprocessing.cpu_count()
    used_cores = st.sidebar.slider(
        "CPU Cores to Use",
        min_value=1,
        max_value=available_cores,
        value=get_optimal_workers(),
        help="Adjust the number of CPU cores used for processing"
    )
    
    return {
        'used_cores': used_cores,
        'total_cores': available_cores
    }