G'day pablor,

Welcome to the Monastery.

"I found that I can handle that by using eval{} Is that the best approach?"

I find Try::Tiny can be a better approach. It's DESCRIPTION starts:

"This module provides bare bones try/catch/finally statements that are designed to minimize common mistakes with eval blocks, and NOTHING else."

Using eval can have some issues. See the BACKGROUND section of Try::Tiny for a discussion of these issues. As you haven't shown how you're using eval, I can't say whether any of those issues apply to you.

There's lots of similar modules available, for instance, try CPAN Search for Try::.

"it seems that is running much slower when I use eval." [my emphasis]

Use Benchmark to compare speeds. I recommend running it several times; five is usual for me.