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2022-06-30 - 22:40

x86 Intel Atom D2700 @2130 MHz, Linux 5.15.49-rt47 (Profile)

Latency plot of system in rack #1, slot #6
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
Compare latency of primary with shadow system
Characteristics of the 100, Linux 4.9.20-rt16, x86_64 highest latencies:
System rack1slot6.osadl.org (updated Thu Jun 30, 2022 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3611490,0irq_work/3381rcuc/310:10:183
3611420,0irq_work/3381rcuc/309:15:103
1811310,0irq_work/0161rcuc/010:20:020
3611300,0irq_work/3381rcuc/311:55:233
3611190,0irq_work/3381rcuc/310:30:283
3611190,0irq_work/3381rcuc/307:25:303
3611160,0irq_work/3381rcuc/308:05:293
1811160,0irq_work/0161rcuc/010:09:590
3611120,0irq_work/3381rcuc/311:05:143
3611100,0irq_work/3381rcuc/312:06:163
3611100,0irq_work/3381rcuc/307:55:133
3611080,0irq_work/3381rcuc/310:49:593
3611070,0irq_work/3381rcuc/307:20:123
3611060,0irq_work/3381rcuc/312:15:173
3611060,0irq_work/3381rcuc/310:15:243
3611040,0irq_work/3381rcuc/312:35:263
3611030,0irq_work/3381rcuc/311:00:263
3611030,0irq_work/3381rcuc/309:09:593
1811020,0irq_work/0161rcuc/008:10:230
3611010,0irq_work/3381rcuc/312:00:133
3611000,0irq_work/3381rcuc/309:25:283
3611000,0irq_work/3381rcuc/309:25:283
361990,0irq_work/3381rcuc/312:25:083
361990,0irq_work/3381rcuc/311:20:113
361990,0irq_work/3381rcuc/310:25:223
361990,0irq_work/3381rcuc/308:00:103
361950,0irq_work/3381rcuc/311:35:213
361950,0irq_work/3381rcuc/311:35:213
221950,0irq_work/1241rcuc/111:54:581
361930,0irq_work/3381rcuc/310:05:213
361920,0irq_work/3381rcuc/312:10:253
361920,0irq_work/3381rcuc/307:40:253
361920,0irq_work/3381rcuc/307:19:543
181920,0irq_work/0161rcuc/011:05:580
181920,0irq_work/0161rcuc/010:35:230
181920,0irq_work/0161rcuc/010:35:230
361910,0irq_work/3381rcuc/311:25:303
361910,0irq_work/3381rcuc/310:38:313
361910,0irq_work/3381rcuc/310:38:313
361910,0irq_work/3381rcuc/309:50:113
361900,0irq_work/3381rcuc/311:14:593
361880,0irq_work/3381rcuc/311:30:303
361880,0irq_work/3381rcuc/307:49:543
181880,0irq_work/0161rcuc/012:35:210
181880,0irq_work/0161rcuc/012:30:230
181880,0irq_work/0161rcuc/012:10:250
361870,0irq_work/3381rcuc/310:55:113
361870,0irq_work/3381rcuc/310:00:093
181870,0irq_work/0161rcuc/012:05:570
361860,0irq_work/3381rcuc/310:43:223
361860,0irq_work/3381rcuc/309:00:233
361860,0irq_work/3381rcuc/308:30:133
291860,0irq_work/2311rcuc/210:49:582
361850,0irq_work/3381rcuc/308:20:093
361850,0irq_work/3381rcuc/308:20:093
291850,0irq_work/2311rcuc/207:30:302
181840,0irq_work/0161rcuc/008:55:220
181840,0irq_work/0161rcuc/008:35:580
181830,0irq_work/0161rcuc/010:10:220
181830,0irq_work/0161rcuc/007:35:220
361820,0irq_work/3381rcuc/309:49:593
361820,0irq_work/3381rcuc/309:30:143
181820,0irq_work/0161rcuc/007:44:590
361810,0irq_work/3381rcuc/308:24:593
221810,0irq_work/1241rcuc/111:35:221
221810,0irq_work/1241rcuc/111:35:221
361800,0irq_work/3381rcuc/311:45:123
361800,0irq_work/3381rcuc/311:19:053
361800,0irq_work/3381rcuc/309:35:243
361800,0irq_work/3381rcuc/308:44:543
361800,0irq_work/3381rcuc/308:15:143
361800,0irq_work/3381rcuc/308:15:143
181800,0irq_work/0161rcuc/012:25:000
181800,0irq_work/0161rcuc/007:50:130
291790,0irq_work/2311rcuc/212:26:052
221790,0irq_work/1241rcuc/111:49:581
181790,0irq_work/0161rcuc/010:59:590
181790,0irq_work/0161rcuc/009:30:240
181790,0irq_work/0161rcuc/008:20:250
181790,0irq_work/0161rcuc/008:20:250
361780,0irq_work/3381rcuc/308:54:543
361780,0irq_work/3381rcuc/308:35:193
221780,0irq_work/1241rcuc/110:55:201
181780,0irq_work/0161rcuc/009:49:540
181780,0irq_work/0161rcuc/009:35:230
181780,0irq_work/0161rcuc/007:29:540
361770,0irq_work/3381rcuc/312:30:413
221770,0irq_work/1241rcuc/111:59:581
221770,0irq_work/1241rcuc/111:19:591
181770,0irq_work/0161rcuc/012:15:230
181770,0irq_work/0161rcuc/010:50:230
361760,0irq_work/3381rcuc/307:50:193
181760,0irq_work/0161rcuc/009:20:210
361750,0irq_work/3381rcuc/311:50:223
361750,0irq_work/3381rcuc/309:13:433
221750,0irq_work/1241rcuc/110:05:141
181750,0irq_work/0161rcuc/007:20:230
361740,0irq_work/3381rcuc/310:50:103
361740,0irq_work/3381rcuc/307:35:213
291740,0irq_work/2311rcuc/208:30:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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