One user send me a question about performance of Joomla Aggregator and server recomendations about php version and recommended php preferences.

Every rss feed has its own cronjob settings.
My personal recommendation is to use no more than 5 to 7 feeds per cron run.
If number of imported at one time rss feeds is below 10 in most cases aggregator use memory from server below 16 mb.
It's better to run every feed in diferent time, this will prevent the need of additional settings in php.ini.
In this way you will be able to use an unlimited number of RSS feeds for source.

In example:
Feeds number 1, 5, 20 and 35 will import every hour in 05 minute.
Feeds number 2, 3, 14, 20 and 45 will import every day in 02 hours 15 minute.
Rss Feeds number 7, 43, 74 and 100 will import every working day in 03 hours
Rss Feeds with id number 10, 50, 80, 120 and 200 will import automatically every weekend in 18 hours 45 minute.
and so.