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diff --git a/content/docs/performance.md b/content/docs/performance.md new file mode 100644 index 0000000..5cd2dc0 --- /dev/null +++ b/content/docs/performance.md @@ -0,0 +1,74 @@ +--- +title: "Performance tests" +date: 2019-06-22 +draft: false +--- + +Below you will find some measurements on the performance of Ouroboros. + +### Local IPC performance test + +This test uses the *oping* tool to measure round trip time. This tools +generates traffic from a single thread. The server has a single thread +that handles ping requests and sends responses. + +``` +$ oping -n oping -i 0 -s <sdu size> +``` + +The figure below shows the round-trip-time (rtt) in milliseconds (ms) +for IPC over a local layer for different packet sizes, measured on an +Intel Core i7 4500U (2 cores @ 2.4GHz). For small payloads (up to 1500 +bytes), the rtt is quite stable at around 30 µs. This will mostly depend +on CPU frequency and to a lesser extent the OS scheduler. + + + +This test uses the *ocbr* tool to measure goodput between a sender and +receiver. The sender generates traffic from a single thread. The +receiver handles traffic from a single thread. The performance will +heavily depend on your system's memory layout (cache sizes etc). This +test was run on a Dell XPS13 9333 (2013 model). + +``` +$ ocbr -n ocbr -f -s <sdu size> +``` + + + +The goodput (Mb/s) is shown below: + + + +### Ethernet + Normal test + +This connects 2 machines over a Gb LAN using the eth-dix and a normal +layer. The oping server is registered in the dix as oping.dix and in the +normal as oping.normal. The machines (dual-socket Intel Xeon E5520) are +connected over a non-blocking switch. + +Latency test: + +ICMP ping: + +``` +--- 192.168.1.2 ping statistics --- +1000 packets transmitted, 1000 received, 0% packet loss, time 65ms +rtt min/avg/max/mdev = 0.046/0.049/0.083/0.002 ms, ipg/ewma 0.065/0.049 ms +``` + +oping over eth-dix: + +``` +--- oping.dix ping statistics --- +1000 SDUs transmitted, 1000 received, 0% packet loss, time: 66.142 ms +rtt min/avg/max/mdev = 0.098/0.112/0.290/0.010 ms +``` + +oping over eth-normal: + +``` +--- oping.normal ping statistics --- +1000 SDUs transmitted, 1000 received, 0% packet loss, time: 71.532 ms +rtt min/avg/max/mdev = 0.143/0.180/0.373/0.020 ms +```
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