On Sat, 29 Jan 2011 13:25:48 -0500, Dennis Nezic wrote:
> On Sat, 29 Jan 2011 01:54:47 +0000, Matthew Toseland wrote:
> > Build 1339 is out. Please upgrade asap, it will be mandatory on
> > Monday. The main change in this build is that backoff is now
> > separate for realtime versus bulk requests. This means, hopefully,
> > that if the performance problems recently have been caused by
> > realtime requests causing lots of backoff, this will only affect
> > realtime requests. It is investigating a theory, one of several,
> > regarding the recent problems.
> > 
> > I am sorry that the network has behaved so badly recently, I am
> > working on it, but it is not easy.
> > 
> > Please upgrade, and please report any and all problems you find.
> > There is a thread on FMS where I am trying to get a better
> > understanding of what problems people are seeing. So far the main
> > reported issues seem to be:
> > - Realtime requests (e.g. fproxy) are slow, and cause all or most
> > peers to get backed off.
> > - Downloads are very slow.
> > - Bootstrapping onto the network is slow.
> 
> I'm getting lots and lots of Timeouts and Overloads in my
> stranger-status details, although not too many BackOffs. After over an
> hour of uptime, my bandwidth usage hasn't really stabilized. Even the
> upload speeds, which used to be quite stable around my 15KB/s limit,
> are very bumpy, quite often near 2KB/s. Same with my download speeds.
> (Although, at least they aren't flooding :p.)
> 
> In general, whenever I look at my strangers, most of them will be:
> FatalTimeout/SENDER_DIED
> FatalTimeout/TransferFailedInsert
> FatalTimeout/AfterInsertAcceptedTimeout
> FatalTimeout/ForwardRejectedOverload2
> 
> I've seen a bunch of InsertTimeoutNoFinalAck, TransferFailedRequest
> (5,13).
> 
> Is this abnormal, or normal congenstion control?
> 
> I also see that the ping times to my strangers are very high,
> 300ms-1000 +ms, even though I can ping google under 20ms. I don't
> know if this is abnormal, or perhaps all my peers are on the other
> side of the planet, or perhaps the value is calculated differently.
> 
> Also, perhaps unrelated, why was I being connected to 11 peers, with a
> 15KB/s connection? Isn't that too high? Although, even after I halved
> this, nothing much changed.

(Cool stats btw :b)

1h 28min uptime:

nodeAveragePingTime: 883ms

# backedOffPercent: 4.9%
# pInstantReject: 27.6%

Input/Output rates well under my limits. (Average rates under half my
limit.)

Routing Backoff Reason  Count   Avg. Time       Total Time
Timeout 1       7.955s  7.955s
TransferFailedInsert    10      7.082s  1m10s
FatalTimeout    22      6.158s  2m15s
AcceptedTimeout 123     4.990s  10m13s
ForwardRejectedOverload4        1       3.016s  3.016s
ForwardRejectedOverload5        3       1.614s  4.843s
ForwardRejectedOverload 152     1.490s  3m46s
TransferFailedRequest5  37      1.459s  54.004s
TransferFailedRequest13 2       1.314s  2.629s
InsertTimeoutNoFinalAck 5       1.219s  6.096s
TransferFailedRequest7  2       1.217s  2.435s
AfterInsertAcceptedTimeout      2       1.196s  2.392s
ForwardRejectedOverload2        20      0.975s  19.519s
ForwardRejectedOverload3        1       0.180s  0.180s

Transfer Backoff Reason Count   Avg. Time       Total Time
SENDER_DIED     24      1m17s   30m54s
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