# Error message when running a service: FunctionEvalTimeoutError: Eval timeout - function took too long to execute (\>2000ms)

**URL:** https://community.appfarm.io/t/error-message-when-running-a-service-functionevaltimeouterror-eval-timeout-function-took-too-long-to-execute-2000ms/290
**Category:** Ask the community
**Tags:** service
**Created:** [February 23, 2023, 8:31am UTC](https://community.appfarm.io/t/error-message-when-running-a-service-functionevaltimeouterror-eval-timeout-function-took-too-long-to-execute-2000ms/290 "2023-02-23T08:31:50Z")
**Posts on this page:** 1
**Showing post:** 5

<div class="post-metadata">

### Author: ![Joanna](https://dub1.discourse-cdn.com/flex013/user_avatar/community.appfarm.io/joanna/32/122_2.png) [@Joanna](https://community.appfarm.io/u/Joanna)
#### Post date: [February 23, 2023, 12:42pm UTC](https://community.appfarm.io/t/error-message-when-running-a-service-functionevaltimeouterror-eval-timeout-function-took-too-long-to-execute-2000ms/290/5 "2023-02-23T12:42:42Z")

</div>

It’s possible that the timeout limit will be reevaluated at some point, but we don’t see it as a sustainable solution to the problem: independently of the limit, there will always be a case of someone exceeding it, so we’d end up in an infinity loop 😉

`Skip Function Properties` should resolve the issue for most cases, but there are a couple more things worth looking into:

- Use runtime data sources whenever possible
- When iterating, avoid bigger functions inside of the loop
- Note that for operations like updating or persisting objects, you can expect better performance when all objects are persisted in 1 operation, rather than persisting each object inside of an iterator
- Make sure you are not loading data sources you don’t really need (especially if they include function properties)
- Nested data bindings should be avoided, as these generate database-connected data sources that can impact the performance significantly

Hope this is useful.

---

_[View the full topic](https://community.appfarm.io/t/error-message-when-running-a-service-functionevaltimeouterror-eval-timeout-function-took-too-long-to-execute-2000ms/290)._