Is it good practice to do session_write_close() to allow another requests getting served?

My app is in Magento 2 and performing some long tasks from magento to shell. So in script execution time server is not serving to any other requests of that particular session until that task is getting finished and request completes. So i found that problem is with session lock and found solutions on php forums that using session_write_close() i can allow another requests of same session to perform their tasks.

But i don't know is it safe to do session_write_close().

NOTE: I don't need to write anything in session after closing it.