I've been seeing these messages ("hammer" is routine disk maintenance, which makes other things run slowly):
Dec 17 05:09:27 darner Tor[1138]: Your computer is too slow to handle this many circuit creation requests! Please consider using the MaxAdvertisedBandwidth conf ig option or choosing a more restricted exit policy. [159 similar message(s) sup pressed in last 60 seconds] Dec 17 05:09:27 darner Tor[1138]: Failed to hand off onionskin. Closing. [159 si milar message(s) suppressed in last 21600 seconds] Dec 17 05:10:22 darner Tor[1138]: Closing stream for '[scrubbed].onion': hidden service is unavailable (try again later). Dec 17 05:16:39 darner kernel: hammer: System has insufficient buffers to rebala nce the tree. nbuf < 3969 Dec 17 05:17:07 darner last message repeated 5 times
I also saw this:
Dec 16 22:11:27 darner Tor[1138]: Tor has not observed any network activity for the past 65 seconds. Disabling circuit build timeout recording. Dec 16 22:11:42 darner Tor[1138]: Tor now sees network activity. Restoring circu it build timeout recording. Network was down for 80 seconds during 3 circuit att empts.
but checking auth.log on my other box shows that this is when I was either sending a huge email or rsyncing some files on an ssh connection from overseas.