Since I went multisite with my 3 webpages, the server on which I host my sites is constantly going down.
Of the 3 websites one is a blog using quite a lot of plug-ins, the other one is a relatively simple site and the third is HTML only.
Originally I had 150MB of RAM and 15 processes assigned. When I was still on single WP installation for the blog and separate HTML website (the third one didn't exist yet), I had no such problems.
Since I went multisite I upped my RAM allotment by 150MB, but it still keeps crashing.
The traffic didn't go up much and it's still very low.
I asked my provider and he said wp-cron.php accessed the server 8300 times and admin-ajax.php 6300 times today by 2PM.
Anyone has any ideas what can cause this ?
The only plug-in I installed after going multisite is 'BWP Google XML Sitemaps'.