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  • #1907
Closed
Open
Issue created Sep 01, 2010 by Robert Hogan@hoganrobert

Unbalanced bandwidth reported in extra-info

When I scan the extra-info data from July for routers that reported more bandwidth read than written in a given 15 minute interval I find quite a few examples. Here's one:

write-history 2010-07-30 05:23:10 (900 s) 631808,48128,28672,1436672,1487872,1076224,860160,1084416,1443840,1492992,334848,1538048,1835008,1281024,21504,2844672,1456128,1641472,21504,1600512,2584576,1123328,24576,1881088,1755136,1750016,26624,1568768,1318912,753664,1013760,991232,15360,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1824768,1720320,1221632,25600,1684480,1898496,363520,916480,1755136,842752,14336,0,0,11264,0,0,0,0,0,0,0,0,1847296,2082816,1767424,23552,664576,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1115136

read-history 2010-07-30 05:23:10 (900 s) 1223680,41984,24576,4365312,4619264,3951616,2774016,4028416,6646784,7943168,1826816,8904704,10902528,6670336,18432,14535680,8086528,7943168,19456,6751232,14049280,6567936,21504,9063424,10653696,10608640,23552,7103488,5774336,3519488,5557248,5390336,11264,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5951488,10020864,7044096,447488,9719808,10972160,331776,4963328,9638912,4784128,11264,0,0,12288,0,0,0,0,0,0,0,0,5955584,11724800,10200064,25600,1619968,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,3531776

Note:

1847296,2082816,1767424,23552,664576

written against 5955584,11724800,10200064,25600,1619968

read. That's probably not just directory fetches. My guess it's client bandwidth. There may even be cases where it's hidden service bandwidth - if the service is running 'locally'.

I ran a scan against the 30th July to pull the routers this happens to. I only pulled the guys that reported a 4MB plus difference for any given 15m interval. The same guys show up again and again, so they are doing something different to everyone else.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information
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