As I understand it, if my session data isn't saved each time, then (using the PdoSessionHandler as an example) when garbage collection is called (whenever it happens to be called), my session may appear to be older than it really is (e.g. the sess_time column shows 1 hour ago, even though I've been surfing around actively during the last hour). This would cause my session to get deleted earlier than it might have been. You could certainly write a session handler that doesn't use this time metadata during its garbage collection process, but most handlers would use it, wouldn't they? So if I understand it correctly. @adrienbrault's warning here makes sense. GC isn't triggered more often, but if it is, your session may be deleted earlier than it would have been otherwise.

Is that accurate?