When your database is in archivelog mode, then you will need to have an area to store archive log file and making it slightly slower performance because the log writer process (LGWR) will have to write the archive redo log data when you switch.
When your database is in archivelog mode, you will need to have space to store the archive log file, and thus performance slow down somewhat due to the log writer process (LGWR) will archive data when writing redo log switch.
when database in your archivelog mode. You will need to have the space to store archive log file and performance slowly coming due. Log writer process (LGWR) is written archive data when redo log switch .