[tor-relays] Pi3 mid relay dropping lil bit of packets

Tristan supersluether at gmail.com
Mon Aug 15 18:23:41 UTC 2016


Personal opinion here:

11 packets dropped on 20GB of data sounds pretty small, and these packets
might not even be from Tor. Literally any network service could have
dropped those packets (ntp, ssh, updates, etc.) I wouldn't worry about it
unless it starts to dramatically increase.

On Aug 15, 2016 1:08 PM, "Pi3" <tor-relays at mixbox.pl> wrote:

Hello,
I just started running my little 5 mbits mid relay on Pi3 on raspbian and
all seems to be dandy,
it picked traffic nicely, hovering around 700-800 total connections,
its not unusual to see it pushing full advertised bandwidth during peak
hours (with ~20-25% load on 1 core, multithread pls come already), tldr so
far nice.
Except with 3days uptime and 20 gigs of data relayed ifconfig shows 11
(eleven) packets dropped on eth0.
Google says it can be ring buffer on NIC getting full, but
ethtool -g eth0 says
Ring parameters for eth0: Cannot get device ring settings: Operation not
supported

ethtool -S eth0 = no stats available

Htop avg load is 0.30, tor uses 121/950mb of ram. Im running standard
conntrack cstate established related iptable rule with default drop.
Pi3 is in LAN behind modem nat.
It worries me because if I get more consensus, drops will probably go up.
I didnt apply any sysctl tweaks. Using official deb
NIC is Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter and
its internally connected to usb2 by design - it shows under lsusb.
ethtool says 100Mb/s full duplex.
Tor log is clean with only heartbeat in it, syslog seemed ok also if I
didnt miss anything.
Or is it so marginal I should forget about it?
Im not sure what should I do about it, any suggestions are welcomed.

Thanks
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