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xibodevelopment / backupwordpress

Simple automated backups of your WordPress powered website.
http://wordpress.org/extend/plugins/backupwordpress/
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Don't let multiple schedules run at the same time #1061

Open katmoody opened 8 years ago

katmoody commented 8 years ago

I think this is partially related to #1036 - basically every schedule sometimes will attempt to run, but not every time.

I've been checking this on sites I visit - I think it's the cron kicking in because it tends to happen on low traffic sites. My thinking is that all the schedules are waiting for a site visit to kick off so they all go at the same time when someone logs in to check out their site ... possible?

I'm listing it as a bug, because I think it's actually brought a site or two down by killing their server processes and overloading them but not sure it's really a bug?

pdewouters commented 8 years ago

Not a bug, that's how WP Cron works.

katmoody commented 8 years ago

I understand that (well, mostly) - my concern is that it is causing the schedules to kick off all at once - shouldn't it at least be limited to one schedule at a time?

pdewouters commented 8 years ago

Yes, I thought there was an issue open for that. but can't find it. Several schedule running in parallel is not good. But that would require some sort of queueing system