Squashed commit of the following:

commit 34de2bfd
Author: Johan Hugé <johan.huge@nexedi.com>
Date:   Fri Jun 26 13:06:26 2020 +0200

    Update description to remove the outdated mention of user space timestamps

commit 631dc199
Author: Johan Hugé <johan.huge@nexedi.com>
Date:   Fri Jun 26 13:04:46 2020 +0200

    Remove property name in the lost packets column

commit 6c2a2eb0
Author: Johan Hugé <johan.huge@nexedi.com>
Date:   Fri Jun 26 11:28:16 2020 +0200

    Show lost packets in measures concerning packets, and add jitter measure

commit 70312c5c
Author: Johan Hugé <johan.huge@nexedi.com>
Date:   Thu Jun 25 17:54:49 2020 +0200

    Add new packet_recv_timestamp measure

commit f02e943f
Author: Johan Hugé <johan.huge@nexedi.com>
Date:   Thu Jun 25 16:33:15 2020 +0200

    Add new packet jitter measures

commit 9a344e10
Author: Johan Hugé <johan.huge@nexedi.com>
Date:   Thu Jun 25 09:55:23 2020 +0200

    Remove outdated measures

measure-analysis/measure-analysis.py

@@ -180,8 +180,13 @@ class MeasureSetHandler:
 
             # List all the measures of this type
             measures = []
+            mids = []
             for mid in self.measure_sets[mtype]['ids']:
-                measures.append(self.get_measure_set("{}{}".format(mtype, mid)))
+                measure = self.get_measure_set("{}{}".format(mtype, mid))
+                # Measures with lost packets are not relevant to graph
+                if 'lost_packets' not in measure.metadata or measure.metadata['lost_packets'] == 0:
+                    measures.append(measure)
+                    mids.append(mid)
             if len(measures) == 0:
                 continue
 
@@ -198,8 +203,8 @@ class MeasureSetHandler:
                 metadata_infos = []
 
                 # Superimpose all the different measures of the same type and property type
-                for j, mid in enumerate(self.measure_sets[mtype]['ids']):
-                    measure = self.get_measure_set("{}{}".format(mtype, mid))
+                for j, measure in enumerate(measures):
+                    mid = mids[j]
                     graph_name = "{}{}".format(mtype, mid)
 
                     # Generate the plot name from the metadata mask
@@ -251,7 +256,7 @@ class MeasureSetHandler:
             # Generate the metadata mask, by grouping the identical metadata
             for measure in measures[1:]:
                 for metadata_name in measure.metadata:
-                    if metadata_name not in self.ignored_metadata:
+                    if metadata_name not in self.ignored_metadata and metadata_name != 'lost_packets':
                         # If it is not already in the metadata mask
                         if metadata_name not in metadata_mask:
                             # If there are two different metadata, they are added to the mask
@@ -263,7 +268,7 @@ class MeasureSetHandler:
             # Compute the identical metadata
             common_metadata = []
             for metadata_name in first_metadata:
-                if metadata_name not in self.ignored_metadata:
+                if metadata_name not in self.ignored_metadata and metadata_name != 'lost_packets':
                     if metadata_name not in metadata_mask:
                         if metadata_name in MeasureSet.abbreviations:
                             common_metadata.append("{}: {}".format(MeasureSet.abbreviations[metadata_name], first_metadata[metadata_name]))
@@ -301,27 +306,34 @@ class MeasureSetHandler:
                 if mtype in MeasureSet.descriptions:
                     report.write('{}\n\n'.format(MeasureSet.descriptions[mtype]))
 
+                # List all the measures of this type
                 measures = []
                 for mid in self.measure_sets[mtype]['ids']:
-                    measures.append(self.get_measure_set("{}{}".format(mtype, mid)))
+                    measure = self.get_measure_set("{}{}".format(mtype, mid))
+                    measures.append(measure)
+
                 if len(measures) == 0:
                     continue
+
+                packet_measures = 'lost_packets' in measures[0].metadata
+
+                if packet_measures:
+                    measures.sort(key=lambda x:x.metadata['lost_packets'])
+
                 first_metadata = measures[0].metadata
 
                 # Write the identical metadata before the table
                 report.write("**Common test metadata:** {}\n\n".format(common_metadata_strs[mtype]))
 
-                for mid in self.measure_sets[mtype]['ids']:
-
-                    measure = self.get_measure_set("{}{}".format(mtype, mid))
+                for measure in measures:
 
                     if need_header:
 
-                        table_str, props_lens = measure.generate_table(headers=True, metadata_mask=metadata_masks[mtype])
+                        table_str, props_lens = measure.generate_table(packet_measures, headers=True, metadata_mask=metadata_masks[mtype])
                         report.write(table_str)
                         need_header = False
                     else:
-                        report.write(measure.generate_table(headers=False, props_lens=props_lens, metadata_mask=metadata_masks[mtype])[0])
+                        report.write(measure.generate_table(packet_measures, headers=False, props_lens=props_lens, metadata_mask=metadata_masks[mtype])[0])
 
                     report.write("\n")
 
@@ -379,7 +391,7 @@ class MeasureSet:
                                                      "thread. The receiving board uses the SO_TIMESTAMPING option to see when "
                                                      "the packet entered the kernel, and generates timestamps with clock_gettime "
                                                      "once the packets enters userspace to compute the time the packet spent in "
-                                                     "kernel and user space.",
+                                                     "kernel space.",
 
                       'packet_send_timestamps':      "Similar to packet_recv_timestamps, but on the transmitting board. ",
 
@@ -592,7 +604,7 @@ class MeasureSet:
         x = [i for i in range(len(prop))]
         return plt.plot(x, prop)
 
-    def generate_table(self, headers=True, values=True, metadata_mask=[], props_lens=[]):
+    def generate_table(self, packet_measures, headers=True, values=True, metadata_mask=[], props_lens=[]):
 
         if headers == False and values == False:
             return ""
@@ -603,6 +615,8 @@ class MeasureSet:
 
             # Table headers
             headers = ["Minimum", "Maximum", "Average", "Standard deviation"]
+            if packet_measures:
+                headers.append("Lost packets")
 
             # Add a metadata information column if the metadata_mask isn't empty
             if metadata_mask != []:
@@ -612,6 +626,9 @@ class MeasureSet:
                 table +=  [headers]
                 table += [["**" + " - ".join(self.props_names) + "**"] * len(headers)]
 
+            if packet_measures:
+                table[-1][-1] = ""
+
         if values:
             m = [self.min, self.max, self.avg, self.dev]
 
@@ -619,9 +636,12 @@ class MeasureSet:
 
             if metadata_mask != []:
                 metadata_info = ["{}".format(self.metadata[metadata_name]) for metadata_name in metadata_mask]
-                table += [["{} ({})".format(", ".join(metadata_info), ", ".join(map(str, self.nb_measures)))] + [" - ".join(values[i]) for i in range(len(values))]]
+                table += [["{} ({})".format(", ".join(metadata_info), ", ".join(map(str, self.nb_measures)))] +
+                          [" - ".join(values[i]) for i in range(len(values))]]
             else:
                 table += [[" - ".join(values[i]) for i in range(len(values))]]
+            if packet_measures:
+                table[-1] += [self.metadata['lost_packets']]
 
         if props_lens == []:
             props_lens = [max([len(table[i][j]) for i in range(len(table))]) for j in range(len(table[0]))]

measure-analysis/measure-report.md

@@ -43,10 +43,10 @@ An UDP packet is periodically sent from one board to another and sent back as so
 
 **Common test metadata:** Linux kernel version: 4.19, Boot Parameters: isolcpus, Interval: 10000us, ETF qdisc delta: 200us, Task priority: 99, Device and processor load: ssh, Test duration: 0h4, qdisc: pfifo_fast, etf_offset: none, route: switch
 
-Minimum    | Maximum    | Average    | Standard deviation
----------- | ---------- | ---------- | ------------------
-**rtt**    | **rtt**    | **rtt**    | **rtt**           
-636.0000us | 972.0000us | 674.0051us | 15.5468us         
+Minimum    | Maximum    | Average    | Standard deviation | Lost packets
+---------- | ---------- | ---------- | ------------------ | ------------
+**rtt**    | **rtt**    | **rtt**    | **rtt**            |             
+636.0000us | 972.0000us | 674.0051us | 15.5468us          | 0           
 
 ![alt text](measures/graphs/packet_rttrtt.png "packet_rtt Graph")
 
@@ -56,26 +56,27 @@ An UDP packet is periodically sent from one board to another using a real time t
 
 **Common test metadata:** Linux kernel version: 4.19, Boot Parameters: isolcpus, Interval: 1000us, Task priority: 99, Device and processor load: ssh, route: switch
 
-Metadata                               | Minimum     | Maximum    | Average    | Standard deviation
--------------------------------------- | ----------- | ---------- | ---------- | ------------------
-**delta, duration, qdisc, etf_offset** | **jitter**  | **jitter** | **jitter** | **jitter**        
-160us, 0h56, etf, 600us (3393011)      | -229.0000us | 204.0000us | 18.6086us  | 23.8092us         
-300us, 2h17, etf, 600us (8240231)      | -255.0000us | 175.0000us | 11.1936us  | 13.4745us         
-none, 0h51, pfifo_fast, none (3077562) | -324.0000us | 162.0000us | 8.5575us   | 13.0667us         
-160us, 0h59, etf, 600us (3565860)      | -172.0000us | 144.0000us | 10.6586us  | 13.4834us         
+Metadata                               | Minimum     | Maximum    | Average    | Standard deviation | Lost packets
+-------------------------------------- | ----------- | ---------- | ---------- | ------------------ | ------------
+**delta, duration, qdisc, etf_offset** | **jitter**  | **jitter** | **jitter** | **jitter**         |             
+160us, 0h56, etf, 600us (3393011)      | -229.0000us | 204.0000us | 18.6086us  | 23.8092us          | 0           
+300us, 2h17, etf, 600us (8240231)      | -255.0000us | 175.0000us | 11.1936us  | 13.4745us          | 0           
+none, 0h51, pfifo_fast, none (3077562) | -324.0000us | 162.0000us | 8.5575us   | 13.0667us          | 0           
+160us, 0h59, etf, 600us (3565860)      | -172.0000us | 144.0000us | 10.6586us  | 13.4834us          | 0           
+160us, 16h18, etf, 500us (58719959)    | -198.0000us | 182.0000us | 10.5478us  | 13.0301us          | 7           
 
 ![alt text](measures/graphs/packet_jitterjitter.png "packet_jitter Graph")
 
 ### packet_recv_timestamps results
 
-An UDP packet is periodically sent from one board to another using a real time thread. The receiving board uses the SO_TIMESTAMPING option to see when the packet entered the kernel, and generates timestamps with clock_gettime once the packets enters userspace to compute the time the packet spent in kernel and user space.
+An UDP packet is periodically sent from one board to another using a real time thread. The receiving board uses the SO_TIMESTAMPING option to see when the packet entered the kernel, and generates timestamps with clock_gettime once the packets enters userspace to compute the time the packet spent in kernel space.
 
 **Common test metadata:** Linux kernel version: 4.19, Boot Parameters: isolcpus, Interval: 1000us, ETF qdisc delta: 160us, Task priority: 99, Device and processor load: ssh, Test duration: 0h59, qdisc: etf, etf_offset: 600us, route: switch
 
-Minimum          | Maximum          | Average          | Standard deviation
----------------- | ---------------- | ---------------- | ------------------
-**kernel_space** | **kernel_space** | **kernel_space** | **kernel_space**  
-34.0000us        | 189.0000us       | 39.9677us        | 4.1425us          
+Minimum          | Maximum          | Average          | Standard deviation | Lost packets
+---------------- | ---------------- | ---------------- | ------------------ | ------------
+**kernel_space** | **kernel_space** | **kernel_space** | **kernel_space**   |             
+34.0000us        | 189.0000us       | 39.9677us        | 4.1425us           | 0           
 
 ![alt text](measures/graphs/packet_recv_timestampskernel_space.png "packet_recv_timestamps Graph")
 

measure-analysis/measures/measure_sets.json

-{"cyclictest_wake-up_latency": {"ids": [25, 26, 28, 30, 31, 32], "next_id": 33}, "packet_rtt": {"ids": [0], "next_id": 1}, "packet_jitter": {"ids": [0, 1, 2, 3], "next_id": 4}, "packet_recv_timestamps": {"ids": [0], "next_id": 1}}
+{"cyclictest_wake-up_latency": {"ids": [25, 26, 28, 30, 31, 32], "next_id": 33}, "packet_rtt": {"ids": [0], "next_id": 1}, "packet_jitter": {"ids": [0, 1, 2, 3, 4], "next_id": 5}, "packet_recv_timestamps": {"ids": [0], "next_id": 1}}
\ No newline at end of file

measure-analysis/measures/packet_jitter0.json

-{"measure_sets": [{"measure_type": "packet_jitter", "props_names": ["jitter"], "units": ["us"], "middle": 229, "props": [[1, 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, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 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, 2, 3, 3, 5, 3, 3, 1, 5, 2, 1, 1, 2, 5, 3, 4, 1, 1, 1, 0, 1, 2, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 2, 1, 2, 6, 5, 2, 8, 8, 8, 10, 16, 17, 26, 19, 22, 27, 29, 23, 47, 32, 25, 36, 36, 51, 39, 45, 53, 50, 42, 57, 66, 59, 66, 81, 103, 108, 154, 170, 247, 324, 430, 548, 732, 893, 1026, 1266, 1505, 1659, 1991, 2246, 2460, 2740, 2916, 3109, 3032, 3279, 3261, 3377, 3397, 3261, 3150, 3166, 3240, 3188, 3222, 3499, 3694, 3872, 4282, 4703, 5375, 6254, 7762, 9510, 12304, 15790, 20185, 25549, 30344, 33643, 35215, 34870, 34826, 35937, 38570, 40695, 40906, 38095, 32845, 28093, 25054, 25391, 28072, 31515, 33144, 32684, 29770, 26485, 24348, 23966, 25943, 29488, 36220, 45215, 58793, 70816, 77412, 75568, 66848, 58881, 57255, 61195, 69602, 75427, 76801, 75517, 75979, 80271, 85902, 87415, 79795, 62828, 44410, 30357, 22150, 19369, 19584, 20536, 21648, 22260, 24691, 27750, 31203, 33938, 34109, 32740, 31439, 32579, 35737, 41127, 43867, 43572, 39498, 34098, 29916, 28317, 29924, 32434, 33756, 32673, 28495, 22457, 17231, 13177, 10591, 8725, 7820, 6834, 6186, 5365, 4863, 4398, 4045, 3700, 3448, 3224, 3055, 2758, 2741, 2620, 2493, 2441, 2412, 2335, 2228, 2215, 2098, 1881, 1805, 1642, 1491, 1264, 1127, 1061, 973, 881, 742, 652, 619, 587, 533, 518, 440, 416, 344, 280, 220, 211, 163, 124, 141, 122, 107, 102, 112, 86, 67, 62, 50, 63, 46, 43, 52, 44, 49, 39, 36, 30, 50, 24, 22, 27, 25, 27, 25, 27, 20, 23, 15, 12, 8, 16, 8, 12, 3, 7, 7, 1, 3, 5, 1, 1, 0, 3, 1, 2, 1, 2, 1, 4, 4, 3, 3, 3, 2, 2, 2, 2, 4, 3, 2, 3, 5, 1, 3, 2, 2, 0, 4, 0, 4, 3, 1, 1, 2, 0, 0, 2, 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, 0, 0, 0, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], "props_type": "histogram", "metadata": {"board": "Slate", "ker": "4.19", "boot_p": "isolcpus", "i": "1000us", "delta": "160us", "prio": "99", "load": "ssh", "duration": "0h56", "qdisc": "etf", "etf_offset": "600us", "route": "switch"}}]}
+{"measure_sets": [{"measure_type": "packet_jitter", "props_names": ["jitter"], "units": ["us"], "middle": 229, "props": [[1, 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, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 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, 2, 3, 3, 5, 3, 3, 1, 5, 2, 1, 1, 2, 5, 3, 4, 1, 1, 1, 0, 1, 2, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 2, 1, 2, 6, 5, 2, 8, 8, 8, 10, 16, 17, 26, 19, 22, 27, 29, 23, 47, 32, 25, 36, 36, 51, 39, 45, 53, 50, 42, 57, 66, 59, 66, 81, 103, 108, 154, 170, 247, 324, 430, 548, 732, 893, 1026, 1266, 1505, 1659, 1991, 2246, 2460, 2740, 2916, 3109, 3032, 3279, 3261, 3377, 3397, 3261, 3150, 3166, 3240, 3188, 3222, 3499, 3694, 3872, 4282, 4703, 5375, 6254, 7762, 9510, 12304, 15790, 20185, 25549, 30344, 33643, 35215, 34870, 34826, 35937, 38570, 40695, 40906, 38095, 32845, 28093, 25054, 25391, 28072, 31515, 33144, 32684, 29770, 26485, 24348, 23966, 25943, 29488, 36220, 45215, 58793, 70816, 77412, 75568, 66848, 58881, 57255, 61195, 69602, 75427, 76801, 75517, 75979, 80271, 85902, 87415, 79795, 62828, 44410, 30357, 22150, 19369, 19584, 20536, 21648, 22260, 24691, 27750, 31203, 33938, 34109, 32740, 31439, 32579, 35737, 41127, 43867, 43572, 39498, 34098, 29916, 28317, 29924, 32434, 33756, 32673, 28495, 22457, 17231, 13177, 10591, 8725, 7820, 6834, 6186, 5365, 4863, 4398, 4045, 3700, 3448, 3224, 3055, 2758, 2741, 2620, 2493, 2441, 2412, 2335, 2228, 2215, 2098, 1881, 1805, 1642, 1491, 1264, 1127, 1061, 973, 881, 742, 652, 619, 587, 533, 518, 440, 416, 344, 280, 220, 211, 163, 124, 141, 122, 107, 102, 112, 86, 67, 62, 50, 63, 46, 43, 52, 44, 49, 39, 36, 30, 50, 24, 22, 27, 25, 27, 25, 27, 20, 23, 15, 12, 8, 16, 8, 12, 3, 7, 7, 1, 3, 5, 1, 1, 0, 3, 1, 2, 1, 2, 1, 4, 4, 3, 3, 3, 2, 2, 2, 2, 4, 3, 2, 3, 5, 1, 3, 2, 2, 0, 4, 0, 4, 3, 1, 1, 2, 0, 0, 2, 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, 0, 0, 0, 0, 2, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], "props_type": "histogram", "metadata": {"board": "Slate", "ker": "4.19", "boot_p": "isolcpus", "i": "1000us", "delta": "160us", "prio": "99", "load": "ssh", "duration": "0h56", "qdisc": "etf", "etf_offset": "600us", "route": "switch", "lost_packets": "0"}}]}
\ No newline at end of file

measure-analysis/measures/packet_jitter1.json

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measure-analysis/measures/packet_jitter2.json

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measure-analysis/measures/packet_jitter3.json

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measure-analysis/measures/packet_jitter4.json

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measure-analysis/measures/packet_recv_timestamps0.json

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measure-analysis/measures/packet_rtt0.json

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