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2022-08-11 - 17:27

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 Thu Aug 11, 2022 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3611190,0irq_work/3381rcuc/310:23:303
3611030,0irq_work/3381rcuc/308:18:433
3611020,0irq_work/3381rcuc/311:48:303
3611020,0irq_work/3381rcuc/309:23:313
361950,0irq_work/3381rcuc/310:59:043
361880,0irq_work/3381rcuc/312:14:013
361860,0irq_work/3381rcuc/310:13:443
361850,0irq_work/3381rcuc/312:28:563
361850,0irq_work/3381rcuc/310:43:343
361850,0irq_work/3381rcuc/310:43:313
361850,0irq_work/3381rcuc/310:38:313
361840,0irq_work/3381rcuc/310:11:323
361830,0irq_work/3381rcuc/311:28:303
361820,0irq_work/3381rcuc/310:25:393
361810,0irq_work/3381rcuc/309:39:003
361810,0irq_work/3381rcuc/308:44:323
361790,0irq_work/3381rcuc/309:53:443
361780,0irq_work/3381rcuc/309:47:373
361780,0irq_work/3381rcuc/307:23:563
361750,0irq_work/3381rcuc/308:13:543
361750,0irq_work/3381rcuc/308:03:313
221740,0irq_work/1241rcuc/110:53:471
361730,0irq_work/3381rcuc/312:18:553
361720,0irq_work/3381rcuc/311:33:303
361710,0irq_work/3381rcuc/309:34:033
361710,0irq_work/3381rcuc/308:33:413
361700,0irq_work/3381rcuc/312:33:593
361700,0irq_work/3381rcuc/308:23:583
361690,0irq_work/3381rcuc/307:53:483
361680,0irq_work/3381rcuc/308:03:583
361680,0irq_work/3381rcuc/307:29:013
2360499683,0cyclictest210099rtkit-daemon09:18:300
2360499681,0cyclictest210099rtkit-daemon10:31:510
2361099666,0cyclictest3099migration/211:38:592
221660,0irq_work/1241rcuc/109:28:311
361650,0irq_work/3381rcuc/308:43:293
361640,0irq_work/3381rcuc/311:13:473
361640,0irq_work/3381rcuc/310:53:553
361630,0irq_work/3381rcuc/311:33:593
361630,0irq_work/3381rcuc/307:18:443
2360499632,0cyclictest210099rtkit-daemon09:03:540
2360499631,0cyclictest210099rtkit-daemon08:18:490
141620,0rcu_preempt13-21ksoftirqd/012:03:580
361610,0irq_work/3381rcuc/308:08:433
2361099615,0cyclictest3099migration/211:44:032
361600,0irq_work/3381rcuc/309:00:303
361600,0irq_work/3381rcuc/307:16:433
361600,0irq_work/3381rcuc/307:08:443
2361099606,0cyclictest3099migration/212:33:502
361590,0irq_work/3381rcuc/311:20:233
361590,0irq_work/3381rcuc/307:53:253
361580,0irq_work/3381rcuc/309:25:433
2361099585,0cyclictest3099migration/208:35:072
2360999582,0cyclictest210099rtkit-daemon11:44:031
361570,0irq_work/3381rcuc/309:58:563
361570,0irq_work/3381rcuc/309:58:563
361570,0irq_work/3381rcuc/308:58:303
2361099565,0cyclictest3099migration/212:28:302
2361099565,0cyclictest3099migration/207:19:402
2361099564,0cyclictest3099migration/212:15:162
2361099564,0cyclictest3099migration/210:38:442
141560,0rcu_preempt13-21ksoftirqd/011:33:490
2361099555,0cyclictest3099migration/211:28:492
181550,0irq_work/0161rcuc/010:47:180
141550,0rcu_preempt25-21ksoftirqd/108:10:341
381540,0rcuc/322820-21sed07:03:563
361540,0irq_work/3381rcuc/309:03:513
2361099544,0cyclictest3099migration/212:22:252
2361099544,0cyclictest3099migration/209:42:032
2361099543,0cyclictest3099migration/208:06:402
2360999543,0cyclictest210099rtkit-daemon11:28:491
181540,0irq_work/0161rcuc/010:35:300
181540,0irq_work/0161rcuc/008:47:190
181540,0irq_work/0161rcuc/008:33:420
361530,0irq_work/3381rcuc/310:28:573
361530,0irq_work/3381rcuc/309:08:473
2361099536,0cyclictest3099migration/209:14:252
2361099534,0cyclictest3099migration/211:53:062
2361099534,0cyclictest0-21swapper/210:49:472
2361099533,0cyclictest4086-21needreboot10:13:522
2361099533,0cyclictest3099migration/211:25:072
2361099532,0cyclictest3099migration/210:00:032
2361099532,0cyclictest3099migration/210:00:032
2361099531,0cyclictest3099migration/207:42:082
2360999532,0cyclictest210099rtkit-daemon07:33:571
181530,0irq_work/0161rcuc/011:49:390
181530,0irq_work/0161rcuc/008:59:020
361520,0irq_work/3381rcuc/312:08:433
361520,0irq_work/3381rcuc/312:08:433
361520,0irq_work/3381rcuc/311:55:273
361520,0irq_work/3381rcuc/311:40:153
291520,0irq_work/2311rcuc/210:45:482
291520,0irq_work/2311rcuc/207:25:082
23610995226,0cyclictest13421-21grep07:59:052
23610995222,0cyclictest1234-21runrttasks11:06:532
23610995222,0cyclictest1234-21runrttasks11:06:532
2360999521,0cyclictest210099rtkit-daemon12:03:481
2360499522,0cyclictest210099rtkit-daemon09:28:310
181520,0irq_work/0161rcuc/007:48:590
181520,0irq_work/0161rcuc/007:11:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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