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[tor-talk] Bursts of 'many circuit creation requests'
I'm occasionally seeing bursts of that in my log:
Jul 08 08:37:59.000 [warn] Your computer is too slow to handle
this many circuit creation requests! Please consider using the
MaxAdvertisedBandwidth config option or choosing a more restricted
I already have
RelayBandwidthRate 50 KB # Throttle traffic to 100KB/s (800Kbps)
MaxAdvertisedBandwidth 40 KB
in my tor.rc but the latter did not help against these messages.
This is not an exit relay. (There are a few hidden services on
it whose .onions are not made public.)
This time I only stumbled over that because of how
the traffic on my DSL link looked:
Which is not the usual burst of tor traffic as incoming traffic is
more than twice the outgoing (red is total, not incoming).
I took a short tcpdump of the connection and noticed that there is
traffic from a number of high-bandwidth tor relays, not just one
I'd guess there is
- either something running amok and trying to build circuits
via a lot of different intermediate relays all through my node
(or possibly other nodes as well; I can monitor only this one).
- or this is done on purpose for some reason.
So, the question is: Is there something fishy or something buggy
going on here? Or neither, but then what is that?
Btw, does an non-exit relay only try to build circuits to known
other relays or can it be steered to other IP addresses/ports
by the circuit initiator?
There is also an old ticket on this topic:
This is 0.2.3.12-alpha running on a pretty lowly AMD Geode 500 MHz.
I've taken the tor node offline for a few more hours.
"Totally trivial. Famous last words."
From: Linus Torvalds <torvalds@*.org>
Date: Fri, 22 Jan 2010 07:29:21 -0800
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