Add short jitter measures with shuttle client and XDP

measure-analysis/measure-report.md

@@ -19,13 +19,15 @@ Measures measuring the same propriety are grouped together in tables and graphs,
 * **etf_offset**: When a packet\s txtime is scheduled, the txtime set is the current time offset by etf_offset
 * **route**: How the boards are connected. switch means they are connected by a switch (cheap, unmanaged), E2E
 * **qdisc**: qdisc used to send packets
+* **client**: Device which sent the packets
+* **XDP**: Were XDP sockets used
 
 ### cyclictest_wake-up_latency results
 
 Uses cyclictest from the rt-tests test suite to measure wake-up latency. A real-time thread is run on CPU1, and wakes up at a regular interval (specified by the interval parameter) using clock_nanosleep. It then uses clock_gettime and computes the difference between the scheduled wake-up time and the effective wake-up time measured by clock_gettime.
 The command used is: cyclictest -p `prio` -a1 -t1 -n -h 200 -q -i `interval`
 
-**Common test metadata:** Task priority: 98, Interval: 200us, Boot Parameters: isolcpus,rcu_nocbs,irqaffinity, ETF qdisc delta: None, Device and processor load: None, qdisc: pfifo_fast
+**Common test metadata:** Task priority: 98, Interval: 200us, Boot Parameters: isolcpus,rcu_nocbs,irqaffinity, ETF qdisc delta: None, Device and processor load: None, qdisc: pfifo_fast, Client device: A20, XDP: no
 
 Metadata                         | Minimum             | Maximum             | Average             | Standard deviation  | Lost packets
 -------------------------------- | ------------------- | ------------------- | ------------------- | ------------------- | ------------
@@ -40,7 +42,7 @@ A20, 5.6, 18h13 (328153384)      | 8.0000us            | 73.0000us           | 9
 Two shuttles connected end to end with an ethernet cable and synchronized with PTP emit signals, and a logic analyzer measures variation in those signals, similar to "Shuttle controlled A20 signal output jitter" measures
 
 
-**Common test metadata:** Device: Shuttle, Linux kernel version: 4.19, Task priority: 98, Interval: 10000us, Boot Parameters: isolcpus,rcu_nocbs,irqaffinity, ETF qdisc delta: None, Device and processor load: None, Test duration: 0h10, Speed (Mb/s): 1000, ETF offset: 500us, Packet route: E2E, qdisc: pfifo_fast
+**Common test metadata:** Device: Shuttle, Linux kernel version: 4.19, Task priority: 98, Interval: 10000us, Boot Parameters: isolcpus,rcu_nocbs,irqaffinity, ETF qdisc delta: None, Device and processor load: None, Test duration: 0h10, Speed (Mb/s): 1000, ETF offset: 500us, Packet route: E2E, qdisc: pfifo_fast, Client device: A20, XDP: no
 
 Minimum                          | Maximum                          | Average                          | Standard deviation               | Lost packets
 -------------------------------- | -------------------------------- | -------------------------------- | -------------------------------- | ------------
@@ -49,4 +51,18 @@ Minimum                          | Maximum                          | Average
 
 ![alt text](measures/graphs/shuttle_signal_jitterShuttle signal output jitter.png "shuttle_signal_jitter Graph")
 
+### packet_jitter results
+
+An UDP packet is periodically sent from one board to another using a real time thread. The receiving board calculates the intervals between the packets it receives, and sees how much it differs from the scheduled interval.
+
+**Common test metadata:** Device: A20, Linux kernel version: 5.6, Task priority: 98, Interval: 1000us, Boot Parameters: isolcpus,rcu_nocbs,irqaffinity, ETF qdisc delta: None, Device and processor load: None, Test duration: 0h0, Speed (Mb/s): 1000, ETF offset: 500us, Packet route: E2E, qdisc: pfifo_fast, Client device: Shuttle
+
+Metadata    | Minimum           | Maximum           | Average           | Standard deviation | Lost packets
+----------- | ----------------- | ----------------- | ----------------- | ------------------ | ------------
+**XDP**     | **Packet jitter** | **Packet jitter** | **Packet jitter** | **Packet jitter**  |             
+yes (11582) | 0.0000us          | 100.0000us        | 59.4658us         | 3.4778us           | 0           
+no (10949)  | 0.0000us          | 239.0000us        | 140.4619us        | 3.0228us           | 0           
+
+![alt text](measures/graphs/packet_jitterPacket jitter.png "packet_jitter Graph")
+
 

measure-analysis/measures/measure_sets.json

-{"cyclictest_wake-up_latency": {"ids": [3, 5], "next_id": 6}, "shuttle_signal_jitter": {"ids": [0], "next_id": 1}}
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+{"cyclictest_wake-up_latency": {"ids": [3, 5], "next_id": 6}, "shuttle_signal_jitter": {"ids": [0], "next_id": 1}, "packet_jitter": {"ids": [0, 1], "next_id": 2}}
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measure-analysis/measures/packet_jitter0.json

+{"measure_sets": [{"measure_type": "packet_jitter", "props_names": ["Packet jitter"], "units": ["us"], "middle": 0, "props": [[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 2, 0, 0, 0, 0, 0, 1, 1, 0, 1, 3, 8, 7, 2, 6, 12, 19, 13, 6, 8, 6, 21, 45, 78, 79, 49, 22, 16, 25, 55, 289, 1479, 3907, 3478, 1166, 254, 72, 32, 15, 16, 17, 67, 80, 77, 37, 11, 11, 7, 5, 16, 17, 13, 1, 3, 10, 5, 1, 3, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0]], "props_type": "histogram", "metadata": {"dev": "A20", "ker": "5.6", "prio": "98", "i": "1000us", "boot_p": "isolcpus,rcu_nocbs,irqaffinity", "delta": "None", "load": "None", "duration": "0h0", "speed": "1000", "etf_offset": "500us", "route": "E2E", "qdisc": "pfifo_fast", "client": "Shuttle", "XDP": "yes", "lost_packets": "0"}}]}
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measure-analysis/measures/packet_jitter1.json

+{"measure_sets": [{"measure_type": "packet_jitter", "props_names": ["Packet jitter"], "units": ["us"], "middle": 0, "props": [[1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 2, 0, 0, 1, 0, 1, 1, 1, 3, 1, 1, 2, 3, 0, 0, 4, 1, 4, 3, 3, 15, 17, 34, 47, 140, 522, 1846, 3132, 2791, 1501, 532, 148, 75, 35, 25, 8, 4, 6, 3, 3, 3, 4, 1, 2, 3, 2, 2, 0, 1, 1, 1, 0, 2, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], "props_type": "histogram", "metadata": {"dev": "A20", "ker": "5.6", "prio": "98", "i": "1000us", "boot_p": "isolcpus,rcu_nocbs,irqaffinity", "delta": "None", "load": "None", "duration": "0h0", "speed": "1000", "etf_offset": "500us", "route": "E2E", "qdisc": "pfifo_fast", "client": "Shuttle", "XDP": "no", "lost_packets": "0"}}]}
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