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2023-02-06 - 13:54

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 Mon Feb 06, 2023 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1811200,0irq_work/0161rcuc/011:32:270
181980,0irq_work/0161rcuc/010:28:260
181980,0irq_work/0161rcuc/010:28:260
181980,0irq_work/0161rcuc/008:37:220
181970,0irq_work/0161rcuc/010:58:260
361940,0irq_work/3381rcuc/310:42:273
103350920,0irq/28-eth0-tx-7650irq/26-ahci[00012:08:560
181880,0irq_work/0161rcuc/007:58:270
361860,0irq_work/3381rcuc/309:32:433
291860,0irq_work/2311rcuc/210:12:292
181860,0irq_work/0161rcuc/010:53:000
181860,0irq_work/0161rcuc/007:27:280
181850,0irq_work/0161rcuc/009:42:280
181850,0irq_work/0161rcuc/008:17:270
291820,0irq_work/2311rcuc/212:19:432
181820,0irq_work/0161rcuc/009:32:530
181800,0irq_work/0161rcuc/011:02:590
181800,0irq_work/0161rcuc/009:02:590
361790,0irq_work/3381rcuc/312:21:563
181770,0irq_work/0161rcuc/011:57:220
181770,0irq_work/0161rcuc/007:22:270
361760,0irq_work/3381rcuc/309:42:583
361760,0irq_work/3381rcuc/308:28:563
181760,0irq_work/0161rcuc/012:18:000
181750,0irq_work/0161rcuc/011:37:570
181750,0irq_work/0161rcuc/011:37:570
361730,0irq_work/3381rcuc/311:13:103
361730,0irq_work/3381rcuc/308:58:263
181730,0irq_work/0161rcuc/010:12:230
181730,0irq_work/0161rcuc/007:43:000
361720,0irq_work/3381rcuc/308:52:473
181720,0irq_work/0161rcuc/011:17:280
361710,0irq_work/3381rcuc/310:18:063
291700,0irq_work/2311rcuc/212:22:462
361690,0irq_work/3381rcuc/307:22:563
181680,0irq_work/0161rcuc/009:22:270
361670,0irq_work/3381rcuc/311:32:473
181670,0irq_work/0161rcuc/007:37:560
181660,0irq_work/0161rcuc/012:27:550
181660,0irq_work/0161rcuc/010:42:270
1799660,0migration/01234-21runrttasks07:00:040
181650,0irq_work/0161rcuc/010:47:280
181650,0irq_work/0161rcuc/010:33:000
181650,0irq_work/0161rcuc/010:33:000
181650,0irq_work/0161rcuc/008:07:570
361640,0irq_work/3381rcuc/307:12:473
361640,0irq_work/3381rcuc/307:12:473
181640,0irq_work/0161rcuc/012:23:020
181640,0irq_work/0161rcuc/011:32:590
181640,0irq_work/0161rcuc/009:17:230
181640,0irq_work/0161rcuc/007:37:230
361630,0irq_work/3381rcuc/312:27:583
361630,0irq_work/3381rcuc/307:55:243
181620,0irq_work/0161rcuc/011:57:500
181620,0irq_work/0161rcuc/011:07:590
361610,0irq_work/3381rcuc/310:27:543
361610,0irq_work/3381rcuc/310:27:543
181610,0irq_work/0161rcuc/007:02:560
221600,0irq_work/1241rcuc/109:12:281
181600,0irq_work/0161rcuc/011:17:590
361590,0irq_work/3381rcuc/309:26:553
181590,0irq_work/0161rcuc/009:47:270
291580,0irq_work/2311rcuc/208:35:332
361570,0irq_work/3381rcuc/311:02:483
361570,0irq_work/3381rcuc/310:02:593
361570,0irq_work/3381rcuc/309:32:283
361570,0irq_work/3381rcuc/309:32:283
181570,0irq_work/0161rcuc/008:23:020
181570,0irq_work/0161rcuc/008:23:020
1666699572,0cyclictest2399migration/110:52:571
181560,0irq_work/0161rcuc/009:57:560
181560,0irq_work/0161rcuc/007:52:280
361550,0irq_work/3381rcuc/312:27:283
361550,0irq_work/3381rcuc/309:58:103
181550,0irq_work/0161rcuc/008:47:590
181550,0irq_work/0161rcuc/008:42:280
361540,0irq_work/3381rcuc/311:42:593
361540,0irq_work/3381rcuc/310:47:423
181540,0irq_work/0161rcuc/010:47:220
181540,0irq_work/0161rcuc/008:18:000
181540,0irq_work/0161rcuc/008:18:000
181540,0irq_work/0161rcuc/007:12:280
181540,0irq_work/0161rcuc/007:12:280
361530,0irq_work/3381rcuc/307:28:273
291530,0irq_work/2311rcuc/210:03:352
291530,0irq_work/2311rcuc/209:35:442
291530,0irq_work/2311rcuc/208:52:412
291530,0irq_work/2311rcuc/208:47:202
291530,0irq_work/2311rcuc/208:30:162
291530,0irq_work/2311rcuc/208:22:342
291530,0irq_work/2311rcuc/208:22:342
361520,0irq_work/3381rcuc/307:43:003
361520,0irq_work/3381rcuc/307:32:533
291520,0irq_work/2311rcuc/211:39:412
291520,0irq_work/2311rcuc/211:39:412
291520,0irq_work/2311rcuc/208:38:172
291520,0irq_work/2311rcuc/208:06:102
181520,0irq_work/0161rcuc/009:52:550
181520,0irq_work/0161rcuc/008:07:230
16673995211,0cyclictest28806-21switchtime10:23:042
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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