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2015 Apr 15
2
Seeing dropped packets / tcp retrans on latest 4.4.1-10el6
So I might have been misinterpreting things here and might be way off base. I think you can ignore this thread and I'll follow up if I get anything concrete down the road =) The retranmissions I'm seeing and reproducing are probably within normal allowances and can't reproduce the issue that originally lead me down this path.
- Nathan
> -----Original Message-----
> From:
2015 Apr 17
0
Seeing dropped packets / tcp retrans on latest 4.4.1-10el6
...mix of ebtables/tc.
Running these commands (replace vif1.0 with the correct vif for your VM) will reproduce this:
ebtables -A FORWARD -i vif1.0 -j mark --set-mark 990 --mark-target CONTINUE
tc qdisc add dev bond0 root handle 1: htb default 2
tc class add dev bond0 parent 1: classid 1:0 htb rate 10000mbit
tc class add dev bond0 parent 1: classid 1:990 htb rate 10000mbit
tc filter add dev bond0 protocol ip parent 1:0 prio 990 handle 990 fw flowid 1:990
Note that the speed limits being applied here are 10gb and I'm testing this on a 1gb network, so TC shouldn't really be doing anything here...