Subscription long wait time until onReady

help
1

I have a performance issue with Meteor subscriptions, and the time taken from subscribing to the subscription to be ready.

I subscribe to three collections, and the subscription onReady events don’t get called until around 4 seconds later (they all take exactly the same time to return call onReady).

Logging on the server shows that the results are returned from the database in only a few milliseconds.

As far as I can see, I do not have any blocking code, and the timeline shows lots of idle time, so I don’t know what causes this long delay.

Any suggestions or gotchas appreciated.

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2

Try another browser to rule out browser config like artificial network throttling.

3

How much data are you subscribing to? Maybe take a look at the [Meteor DDP Monitor Chrome Extension] (https://github.com/thebakeryio/meteor-ddp-monitor) or Kadira Debug, to see what’s happening behind the scenes.