I'm woirking with Moodle 3.8.4+ (Build: 20200730)
Since monday, sending notification emails for student take a very long time.
Last week, the server was able to process up to 1700 messages in one minute, today, it is around 30. (logstore_standard_log)
when I execute the cron job, here is what I've got for one message :
Sending messages to firstname.lastname@example.org (6393)
Post 72378 sent
Sent 1 messages with 0 failures
Marking posts as read
Marked 1 posts as read
... used 35 dbqueries
... used 5.034795999527 seconds
Adhoc task complete: mod_forum\task\send_user_notifications
Execute adhoc task: mod_forum\task\send_user_notifications
... started 16:03:15. Current memory use 43.8MB.
So around 5 seconds for one message...
I have several front end server, running the cronjob on another one do exactly the same.
Does anyone have any idea where I should look at in order to solve this ?
Thanx for your help.