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2022-07-03 - 19:41

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #3

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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x86 Intel Atom E3940 @1600 MHz, Linux 4.16.15-rt7 (Profile)

Latency plot of shadow in rack #5, slot #3
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack5slot3s.osadl.org (updated Sun Jul 03, 2022 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
100792241163,26sleep00-21swapper/007:09:170
100852239163,24sleep10-21swapper/107:09:221
100502233162,58sleep30-21swapper/307:08:573
98542202166,23sleep20-21swapper/207:06:252
2957421440,3sleep31024399cyclictest11:30:243
10237999684,7cyclictest0-21swapper/208:38:242
10237996360,2cyclictest0-21swapper/211:35:462
246072600,1sleep00-21swapper/012:35:120
308112590,1sleep30-21swapper/311:35:143
209372570,1sleep20-21swapper/208:45:162
1022699368,13cyclictest1104-21munin-run09:15:010
302362340,3sleep31024399cyclictest07:50:303
1022699347,12cyclictest4563-21perf11:50:010
103802330,2sleep121-21rcuc/108:20:191
1023199311,5cyclictest0-21swapper/110:55:241
1023199310,29cyclictest0-21swapper/111:28:351
1022699312,13cyclictest15891-21munin-run08:35:010
164062300,3sleep016412-21gltestperf12:15:170
164062300,3sleep016412-21gltestperf12:15:170
1023799291,6cyclictest0-21swapper/212:35:562
267162280,3sleep339-21rcuc/307:45:123
1022699283,12cyclictest3937-21munin-run10:35:010
324592270,4sleep30-21swapper/310:25:133
1023799271,6cyclictest0-21swapper/212:05:482
10231992714,4cyclictest4072-21unixbench_multi11:45:281
1022699272,13cyclictest32519-21munin-run11:40:010
1022699272,13cyclictest30319-21munin-run11:35:010
1022699270,16cyclictest21281-21kworker/0:111:23:310
10231992616,5cyclictest0-21swapper/112:05:481
10231992615,3cyclictest0-21swapper/111:23:051
10231992615,3cyclictest0-21swapper/109:34:461
1023799251,8cyclictest0-21swapper/209:39:202
1023199252,20cyclictest403-21sleep08:00:011
1023199251,3cyclictest0-21swapper/109:40:201
1023199250,6cyclictest0-21swapper/110:33:131
10226992510,6cyclictest0-21swapper/011:15:480
1024399242,6cyclictest0-21swapper/311:58:013
10231992420,3cyclictest0-21swapper/111:51:091
10231992414,3cyclictest0-21swapper/111:44:221
1023199240,6cyclictest0-21swapper/112:11:141
1022699247,3cyclictest0-21swapper/007:53:090
1024399235,9cyclictest31279-21diskmemload11:53:573
1024399234,2cyclictest86550irq/126-enp1s0-09:35:013
1024399233,4cyclictest0-21swapper/311:48:113
1024399232,5cyclictest0-21swapper/312:11:383
1024399232,5cyclictest0-21swapper/309:29:303
1024399232,13cyclictest25482-21memory12:35:213
1024399231,7cyclictest0-21swapper/312:07:103
1024399231,7cyclictest0-21swapper/311:02:543
1024399231,4cyclictest0-21swapper/311:25:253
1024399231,4cyclictest0-21swapper/309:52:413
1024399231,4cyclictest0-21swapper/309:48:043
1023799231,4cyclictest0-21swapper/209:34:462
1023199234,4cyclictest31688-21cstates09:10:121
1023199231,5cyclictest0-21swapper/112:25:511
1023199231,4cyclictest0-21swapper/112:38:501
1023199231,19cyclictest3603-21hddtemp_smartct08:05:161
1023199231,19cyclictest18703-21munin-run09:55:011
10231992310,11cyclictest14649-21kworker/u8:011:08:141
10231992310,11cyclictest14649-21kworker/u8:011:08:141
1023199230,5cyclictest0-21swapper/112:30:371
1023199230,5cyclictest0-21swapper/111:16:291
1023199230,5cyclictest0-21swapper/110:44:281
1023199230,4cyclictest0-21swapper/112:25:011
1023199230,11cyclictest0-21swapper/110:24:571
1022699238,3cyclictest26529-21needreboot10:10:200
1022699238,2cyclictest5456-21kworker/0:009:30:010
1022699237,3cyclictest0-21swapper/010:03:490
1022699237,3cyclictest0-21swapper/010:03:490
1022699231,6cyclictest0-21swapper/010:46:110
1024399227,5cyclictest0-21swapper/310:17:503
1024399222,4cyclictest0-21swapper/310:23:173
1024399222,11cyclictest11724-21/usr/sbin/munin08:25:173
1024399221,6cyclictest0-21swapper/311:15:193
1024399221,10cyclictest836-21runrttasks11:24:183
1023799225,5cyclictest19531-21unixbench_singl12:20:272
1023799221,6cyclictest0-21swapper/211:27:352
1023199229,6cyclictest0-21swapper/110:07:501
1023199224,11cyclictest780-21rngd09:20:261
1023199221,6cyclictest0-21swapper/111:02:171
10231992216,3cyclictest22465-21crond08:50:001
1023199221,5cyclictest0-21swapper/109:45:261
10231992215,4cyclictest25813-21grep07:40:281
10231992212,3cyclictest0-21swapper/109:56:161
1023199221,19cyclictest0-21swapper/110:25:281
1023199221,19cyclictest0-21swapper/109:25:251
1023199221,19cyclictest0-21swapper/109:18:581
1023199221,19cyclictest0-21swapper/108:55:171
1023199221,19cyclictest0-21swapper/108:00:071
1023199221,18cyclictest27321-21chrt10:12:501
1023199221,11cyclictest836-21runrttasks09:00:031
1023199221,11cyclictest836-21runrttasks09:00:031
1023199220,6cyclictest0-21swapper/111:33:441
1023199220,6cyclictest0-21swapper/110:39:151
1023199220,5cyclictest0-21swapper/112:04:381
1022699226,3cyclictest31490-21grep07:55:160
1022699222,11cyclictest12431-21/usr/sbin/munin12:05:220
1022699220,9cyclictest0-21swapper/009:00:150
1022699220,9cyclictest0-21swapper/009:00:150
1022699220,11cyclictest0-21swapper/011:07:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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