Need help with spawn

[i-darshan]

let _load_task = cx.spawn_in(window, async move |this, cx| {
    let start = std::time::Instant::now();
    
    let index_json_content = fs::read_to_string(PRODUCTION_INDEX_PATH)
        .map_err(|e| format!("Failed to read index file {}: {}", PRODUCTION_INDEX_PATH, e))
        .unwrap();
        
    let contract: HashSet<String> = serde_json::from_str(&index_json_content)
        .map_err(|e| format!("Failed to deserialize index JSON: {}", e))
        .unwrap();
        
    let data_processor = DataProcessor::new_with_index(
        db_path,
        contract,
    )
    .unwrap();
    let (some_data, spot_price) = data_processor
        .query_data_snapshot(
            fetch_some_data_from_db
        )
        .unwrap();
    
    _ = this.update_in(cx, |this, one, two| {
        this.data_list.extend(some_data);
        this.item_sizes = Rc::new(
            this.data_list
                .iter()
                .map(|_| size(px(200.), px(30.)))
                .collect(),
        );
        two.notify();
    });
    println!("cx spawn table UI updaet done");
    let elapsed = start.elapsed(); // End timer
    eprintln!("state update Load took: {:?}", elapsed);
});

@huacnlee Can someone help identify what's wrong with this, it almost takes 5secs to render the table or list. I did check the db opeartion which takes not more than 3ms

[huacnlee]

The code of you submit can't see any reason to caused that slow response.

You need to check more in your code.