Re: [tor-relays] A bit more evidence on circuit creation storms

[Gordon Morehouse <gordon@xxxxxxxxxxxx>]

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Andreas Krey:
>> My main question:  How do circuit creation requests on one's Tor
>> relay cause load on one's network infrastructure?  Is it DNS
>> requests?  Is it TCP connection state entries?  It's not
>> bandwidth, we observed that above, and my router can handle far
>> faster pipes than the one it's on currently.  The DNS failing is
>> a sign that the router is under severe stress.
> 
> Possibly your uplink is full (supposing you're on some DSL), and
> is starting to build up ping time; then DNS requests to the outside
> can start to timeout.
> 
> Andreas
> 

Unlikely - I do pseudo-QoS such that my uplink should never be full.
It's possible, but I believe it's more likely that my router is
thrashing for whatever reason and starts to be real slow at responding
to DNS.


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