The changesets are having the expected number of nodes for this time of
day (based on my recorded history), but the transaction IDs are going up
much faster (txnMax from state.txt). For instance in the most recent 6
hours the txnMax was 8129933, 8140852, 8152102, 8212660, 8302266, and
8366981. This is a delta for each 60 minute interval as follows:
4/19 00:01 delta 10,919
4/19 01:00 delta 11,250
4/19 02:01 delta 60,558
4/19 03:01 delta 89,606
4/19 04:00 delta 64,715
That's the jump that I'm seeing, not in the node, way, or relation
counts, but in the delta of the txnMax values which I believe are
transaction IDs from the database?
Lynn (D) - KJ4ERJ
On 4/19/2012 12:25 AM, Paul Norman wrote:
From: Lynn W. Deffenbaugh (Mr) [mailto:[email protected]]
Sent: Wednesday, April 18, 2012 8:19 PM
To: [email protected]
Subject: [OSM-dev] Transactions per minute?
Is something actually going on with the redaction diffs now? Or is
something else driving up the transaction IDs?
I track the change in transaction ID vs the minutely sequence and
instead of running between 100 and 500 transactions per minute, the past
two hours have been 1,000 and 1,500 transactions per sequence
respectively. But strangely enough, the diffs applied in less than 10
minutes which is more like the time it takes my system to digest 200
transactions per minute.
I don't believe they've started yet, and nothing looks unusual in my
changeset watcher. There's been a half-dozen imports or so over the last
day, but that's about normal.
I've been watching for a change in the update rate figuring that would
be an indication of the redaction activity because I've been wondering
if my marginally capable planet-wide map server would be able to digest
the burst of updates that are expected. But if this is them, then I'm
out of the woods and can rest easily.
Some back of the envelop calculations estimated that with the predicted
schedule it would be at least 4-5 times normal traffic.
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