{"build_id": "2014-12-18_01-32-01", "ostf_sha": "a9afb68710d809570460c29d6c3293219d3624d4", "build_number": "56", "auth_required": true, "api": "1.0", "nailgun_sha": "5f91157daa6798ff522ca9f6d34e7e135f150a90", "production": "docker", "fuelmain_sha": "45caacadb878abfbd9d60e134d72229698b469c9", "astute_sha": "16b252d93be6aaa73030b8100cf8c5ca6a970a91", "feature_groups": ["mirantis", "experimental"], "release": "6.0", "release_versions": {"2014.2-6.0": {"VERSION": {"build_id": "2014-12-18_01-32-01", "ostf_sha": "a9afb68710d809570460c29d6c3293219d3624d4", "build_number": "56", "api": "1.0", "nailgun_sha": "5f91157daa6798ff522ca9f6d34e7e135f150a90", "production": "docker", "fuelmain_sha": "45caacadb878abfbd9d60e134d72229698b469c9", "astute_sha": "16b252d93be6aaa73030b8100cf8c5ca6a970a91", "feature_groups": ["mirantis"], "release": "6.0", "fuellib_sha": "73332192a257ea02c40a39885c502ad1ebdf3eda"}}}, "fuellib_sha": "73332192a257ea02c40a39885c502ad1ebdf3eda"}
Steps to reproduce:
1. Deploy cluster (hardware) HA Ubuntu LACP bond 3 (2x10G) Controllers, 2 Computes, 2 Cephs
2. Measure the speed:
- Create instance, on it execute: nice -n -20 iperf -s --print_mss --nodelay
- On the controller: #ip netns exec qdhcp-6ea4143c-ba7c-4e39-a541-c58eec1d209c /bin/bash
#nice -n -20 iperf -c <iperf_server__internal_IP> --format m --len 96K --print_mss --nodelay --time 180
3. The speed is ~1 Mbitps
See the traffic on the controller on with executed iperf client:
#tcpdump -i br-mgmt '((ip[6:2] > 0) and (not ip[6] = 64))'
15:49:32.820589 IP node-28.domain.tld > node-27.domain.tld: GREv0, key=0x2, length 1480: IP truncated-ip - 42 bytes missing! 192.168.111.2.37223 > 192.168.111.5.rfe: Flags [.], seq 152040:153488, ack 1, win 229, options [nop,nop,TS val 5992114 ecr 3494352], length 1448
15:49:32.820603 IP node-28.domain.tld > node-27.domain.tld: gre
15:49:33.024643 IP node-28.domain.tld > node-27.domain.tld: GREv0, key=0x2, length 1480: IP truncated-ip - 42 bytes missing! 192.168.111.2.37223 > 192.168.111.5.rfe: Flags [.], seq 153488:154936, ack 1, win 229, options [nop,nop,TS val 5992165 ecr 3494403], length 1448
15:49:33.024658 IP node-28.domain.tld > node-27.domain.tld: gre
The packages will be fragmented because of the GRE + to MTU ~42 bytes
If change the mss size:
#nice -n -20 iperf -c 192.168.111.5 --format m --mss 500 --nodelay --time 180 -p 5002
The speed is 775 Mbits/sec
Please also see: https:/ /bugs.launchpad .net/neutron/ +bug/1419069