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2022-10-04 - 12:13

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 highest latencies:
System rack1slot6.osadl.org (updated Tue Oct 04, 2022 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3611540,0irq_work/3381rcuc/300:17:133
3611540,0irq_work/3381rcuc/300:17:133
3611410,0irq_work/3381rcuc/322:37:093
3611300,0irq_work/3381rcuc/321:11:543
3611200,0irq_work/3381rcuc/321:42:093
3611190,0irq_work/3381rcuc/320:41:583
3611160,0irq_work/3381rcuc/320:32:373
3611140,0irq_work/3381rcuc/323:52:093
3611120,0irq_work/3381rcuc/322:32:183
3611090,0irq_work/3381rcuc/323:22:083
3611040,0irq_work/3381rcuc/323:16:383
3611040,0irq_work/3381rcuc/323:16:383
3611030,0irq_work/3381rcuc/321:47:073
3611020,0irq_work/3381rcuc/320:16:383
3611010,0irq_work/3381rcuc/320:17:103
3611010,0irq_work/3381rcuc/300:01:383
3611000,0irq_work/3381rcuc/320:22:043
361990,0irq_work/3381rcuc/320:02:123
361960,0irq_work/3381rcuc/300:12:003
291960,0irq_work/2311rcuc/200:31:542
361910,0irq_work/3381rcuc/321:27:153
361910,0irq_work/3381rcuc/321:16:543
361910,0irq_work/3381rcuc/319:17:013
361890,0irq_work/3381rcuc/319:37:053
361880,0irq_work/3381rcuc/320:27:053
361880,0irq_work/3381rcuc/320:07:073
361880,0irq_work/3381rcuc/300:01:573
361860,0irq_work/3381rcuc/322:17:353
361860,0irq_work/3381rcuc/322:07:053
361860,0irq_work/3381rcuc/300:27:053
361840,0irq_work/3381rcuc/323:47:003
361840,0irq_work/3381rcuc/322:22:083
361840,0irq_work/3381rcuc/300:07:123
361830,0irq_work/3381rcuc/319:46:383
361820,0irq_work/3381rcuc/323:06:553
361820,0irq_work/3381rcuc/322:47:053
361820,0irq_work/3381rcuc/320:51:383
361820,0irq_work/3381rcuc/319:16:393
361800,0irq_work/3381rcuc/321:02:143
361800,0irq_work/3381rcuc/320:51:593
361800,0irq_work/3381rcuc/320:51:593
291800,0irq_work/2311rcuc/219:56:392
361790,0irq_work/3381rcuc/319:35:253
361780,0irq_work/3381rcuc/323:16:583
361780,0irq_work/3381rcuc/321:51:433
361770,0irq_work/3381rcuc/321:37:083
361770,0irq_work/3381rcuc/319:26:563
361770,0irq_work/3381rcuc/300:22:053
221770,0irq_work/1241rcuc/121:11:571
361760,0irq_work/3381rcuc/322:28:543
361760,0irq_work/3381rcuc/322:06:383
361760,0irq_work/3381rcuc/322:06:383
361750,0irq_work/3381rcuc/322:57:253
361750,0irq_work/3381rcuc/322:11:563
361750,0irq_work/3381rcuc/321:22:393
361750,0irq_work/3381rcuc/321:01:383
361750,0irq_work/3381rcuc/319:07:043
361740,0irq_work/3381rcuc/320:41:373
361740,0irq_work/3381rcuc/319:59:093
361730,0irq_work/3381rcuc/321:31:543
181730,0irq_work/0161rcuc/019:02:050
361720,0irq_work/3381rcuc/323:36:203
361720,0irq_work/3381rcuc/321:57:083
361720,0irq_work/3381rcuc/319:26:173
291720,0irq_work/2311rcuc/223:51:382
291720,0irq_work/2311rcuc/219:37:022
361700,0irq_work/3381rcuc/322:42:213
361690,0irq_work/3381rcuc/321:11:243
361680,0irq_work/3381rcuc/323:46:383
291680,0irq_work/2311rcuc/222:01:382
361670,0irq_work/3381rcuc/319:52:083
291670,0irq_work/2311rcuc/223:27:092
291670,0irq_work/2311rcuc/222:56:282
291670,0irq_work/2311rcuc/222:07:172
361650,0irq_work/3381rcuc/322:56:333
361640,0irq_work/3381rcuc/323:02:253
361640,0irq_work/3381rcuc/319:46:503
361640,0irq_work/3381rcuc/319:46:503
361640,0irq_work/3381rcuc/300:32:073
361630,0irq_work/3381rcuc/323:27:143
291630,0irq_work/2311rcuc/221:01:532
291630,0irq_work/2311rcuc/220:17:132
291610,0irq_work/2311rcuc/220:56:382
291610,0irq_work/2311rcuc/220:56:382
221600,0irq_work/1241rcuc/119:15:251
361580,0irq_work/3381rcuc/323:41:083
291580,0irq_work/2311rcuc/223:07:092
221580,0irq_work/1241rcuc/119:07:061
291570,0irq_work/2311rcuc/223:36:382
381560,0rcuc/36359-21forks19:01:573
291560,0irq_work/2311rcuc/219:01:572
291550,0irq_work/2311rcuc/221:12:092
291540,0irq_work/2311rcuc/222:12:072
221540,0irq_work/1241rcuc/120:14:441
221540,0irq_work/1241rcuc/120:06:391
241530,0rcuc/17783-21runrttasks19:04:341
221530,0irq_work/1241rcuc/123:31:561
291520,0irq_work/2311rcuc/223:52:092
291520,0irq_work/2311rcuc/220:02:092
221520,0irq_work/1241rcuc/121:41:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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