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—documentation:examples:forwarding_performance_lab_of_a_superserver_5018a-ftn4_with_10-gigabit_chelsio_t540-cr [2017/09/04 09:03] – external edit 127.0.0.1
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 +====== Forwarding performance lab of a SuperServer 5018A-FTN4 with 10-Gigabit Chelsio T540-CR ======
 +{{description>Forwarding performance lab of a 8 cores Atom C2758 at 2.41GHz with 10-Gigabit Chelsio T540-CR}}
 +===== Hardware detail =====
 +
 +This lab will test a [[http://www.supermicro.com/products/system/1U/5018/SYS-5018A-FTN4.cfm|SuperMicro]] [[SuperServer 5018A-FTN4]]:
 +   * Intel Rangeley: [[http://ark.intel.com/products/77988/Intel-Atom-Processor-C2758-4M-Cache-2_40-GHz|Atom C2758 (8 cores) at 2.4GHz]]
 +   * 8Gb of RAM
 +   * Quad port Chelsio 10-Gigabit T540-CR and OPT SFP (SFP-10G-LR)
 +
 +===== Lab set-up =====
 +
 +For more information about full setup of this lab: [[documentation:examples:Setting up a forwarding performance benchmark lab]] (switch configuration, etc.).
 +
 +BSDRP used for this bench is based on FreeBSD 11.1.
 +
 +==== Diagram ====
 +
 +<code>
 ++------------------------------------------+ +-------+ +------------------------------+
 +|        Device under test                 | |Juniper| | Packet generator & receiver  |
 +|                                          | |  QFX  | |                              |
 +|                cxl0: 198.18.0.8/24       |=|   <   |=| vcxl0: 198.18.0.110/24       |
 +|                      2001:2::8/64        | |       | |        2001:2::110/64        |
 +|                      (00:07:43:2e:e5:90) | |       | |        (00:07:43:2e:e4:72)   |
 +|                                          | |       | |                              |
 +|                cxl1: 198.19.0.8/24       |=|   >   |=| vcxl1: 198.19.0.110/24       |
 +|                      2001:2:0:8000::8/64 | |       | |        2001:2:0:8000::110/64 |
 +|                      (00:07:43:2e:e5:98) | +-------+ |        (00:07:43:2e:e4:7a)   |
 +|                                          |           |                              |
 +|            static routes                 |           |                              |
 +| 192.18.0.0/16      => 198.18.0.10        |           |                              |
 +| 192.19.0.0/16      => 198.19.0.10        |           |                              |
 +| 2001:2::/49        => 2001:2::110        |           |                              |
 +| 2001:2:0:8000::/49 => 2001:2:0:8000::110 |           |                              |
 +|                                          |           |                              |
 +|        static arp and ndp                |           | /boot/loader.conf:           |
 +| 198.18.0.10        => 00:07:43:2e:e4:72  |           |      hw.cxgbe.num_vis=2      |
 +| 2001:2::110                              |           |                              |
 +|                                          |           |                              |
 +| 198.19.0.10        => 00:07:43:2e:e4:7a  |           |                              |
 +| 2001:2:0:8000::110                       |           |                              |
 ++------------------------------------------+           +------------------------------+
 +</code>
 +
 +The generator **MUST** generate lot's of smallest IP flows (multiple source/destination IP addresses and/or UDP src/dst port).
 +
 +Here is an example for generating 2000 IPv4 flows (100 destination IP addresses * 20 source IP addresses) with a Chelsio NIC:
 +<code>
 +pkt-gen -i vcxl0 -f tx -n 1000000000 -l 60 -d 198.19.10.1:2000-198.19.10.100 -D 00:07:43:2e:e5:90 -s 198.18.10.1:2000-198.18.10.20 -w 4 -p 2
 +</code>
 +
 +And the same with IPv6 flows (minimum frame size of 62 here):
 +<code>
 +pkt-gen -f tx -i vcxl0 -n 1000000000 -l 62 -6 -d "[2001:2:0:8010::1]-[2001:2:0:8010::64]" -D 00:07:43:2e:e5:90 -s "[2001:2:0:10::1]-[2001:2:0:10::14]" -S 00:07:43:2e:e4:72 -w 4 -p 2
 +</code>
 +
 +<note warning>
 +This version of pkt-gen is improved with: IPv6 support, software checksum and optional unit normalization. [[https://raw.githubusercontent.com/ocochard/BSDRP/master/BSDRPcur/patches/freebsd.pkt-gen.ae-ipv6.patch|BSDRP's patch to netmap pkt-gen ]].
 +</note>
 +Receiver will use this command:
 +<code>
 +pkt-gen -i vcxl1 -f rx -w 4
 +</code>
 +===== Basic configuration =====
 +
 +==== Disabling Ethernet flow-control ===
 +
 +First, disable Ethernet flow-control on both servers. Chelsio T540 are configured like this:
 +<code>
 +echo "dev.cxl.0.pause_settings=0" >> /etc/sysctl.conf
 +echo "dev.cxl.0.pause_settings=0" >> /etc/sysctl.conf
 +service sysctl reload
 +</code>
 +
 +=== Disabling LRO and TSO ===
 +
 +A router [[Documentation:Technical docs:Performance|should not use LRO and TSO]]. BSDRP disable by default using a RC script (disablelrotso_enable="YES" in /etc/rc.conf.misc).
 +==== IP Configuration on DUT ==== 
 +
 +Configure static routes:
 +<code>
 +sysrc static_routes="generator receiver"
 +sysrc route_generator="-net 198.18.0.0/16 198.18.8.2"
 +sysrc route_receiver="-net 198.19.0.0/16 198.19.8.2"
 +sysrc ifconfig_cxl0="inet 198.18.0.8/24 -tso4 -tso6 -lro"
 +sysrc ifconfig_cxl1="inet 198.19.0.8/24 -tso4 -tso6 -lro"
 +sysrc static_arp_pairs="HPncxl0 HPncxl1"
 +sysrc static_arp_HPncxl0="198.18.0.110 00:07:43:2e:e4:72"
 +sysrc static_arp_HPncxl1="198.19.0.110 00:07:43:2e:e4:7a"
 +</code>
 +===== Default forwarding rate =====
 +
 +Behaviour in front of a multi-flow traffic generator at line-rate 14.8Mpps (thanks Chelsio!), pkt-gen on the receiver reports:
 +
 +<code>
 +705.046821 main_thread [2277] 3173758 pps (3176351 pkts 1524648480 bps in 1000817 usec) 19.66 avg_batch 0 min_space
 +706.048593 main_thread [2277] 3179960 pps (3185595 pkts 1529085600 bps in 1001772 usec) 19.65 avg_batch 823 min_space
 +707.050593 main_thread [2277] 3180102 pps (3186459 pkts 1529500320 bps in 1001999 usec) 19.63 avg_batch 1000 min_space
 +708.052592 main_thread [2277] 3182707 pps (3189072 pkts 1530754560 bps in 1002000 usec) 19.69 avg_batch 768 min_space
 +709.054593 main_thread [2277] 3166689 pps (3173022 pkts 1523050560 bps in 1002000 usec) 19.59 avg_batch 1001 min_space
 +710.055593 main_thread [2277] 3126576 pps (3129706 pkts 1502258880 bps in 1001001 usec) 19.33 avg_batch 999 min_space
 +711.057592 main_thread [2277] 3138706 pps (3144980 pkts 1509590400 bps in 1001999 usec) 19.41 avg_batch 768 min_space
 +712.058592 main_thread [2277] 3147761 pps (3150909 pkts 1512436320 bps in 1001000 usec) 19.47 avg_batch 768 min_space
 +713.059592 main_thread [2277] 3156042 pps (3159195 pkts 1516413600 bps in 1000999 usec) 19.51 avg_batch 768 min_space
 +714.060592 main_thread [2277] 3174469 pps (3177647 pkts 1525270560 bps in 1001001 usec) 19.58 avg_batch 768 min_space
 +715.061593 main_thread [2277] 3172119 pps (3175291 pkts 1524139680 bps in 1001000 usec) 19.60 avg_batch 1001 min_space
 +</code>
 +
 +About 3.1M packets-per-seconds forwarded.
 +
 +===== Firewall impact on forwarding rate =====
 +
 +{{:documentation:examples:bench-lab-ss5018a-ftn4-chelsio-11-stable.png}}
  
documentation/examples/forwarding_performance_lab_of_a_superserver_5018a-ftn4_with_10-gigabit_chelsio_t540-cr.txt · Last modified: 2019/12/16 20:48 by olivier
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