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2023-12-07 - 13:41
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 50 highest latencies:
System rack1slot6.osadl.org (updated Thu Dec 07, 2023 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
291920,0irq_work/2311rcuc/220:02:532
361890,0irq_work/3381rcuc/323:45:023
361880,0irq_work/3381rcuc/322:26:053
19966997461,0cyclictest30415-21unixbench_singl00:17:001
19977997267,0cyclictest0-21swapper/320:06:063
361690,0irq_work/3381rcuc/320:39:353
291690,0irq_work/2311rcuc/221:02:102
361680,0irq_work/3381rcuc/319:12:193
1996699665,0cyclictest2399migration/120:56:371
1996699644,0cyclictest2399migration/119:56:401
1996699644,0cyclictest2399migration/119:56:401
181640,0irq_work/0161rcuc/021:46:170
291630,0irq_work/2311rcuc/219:21:432
19977996358,0cyclictest0-21swapper/323:37:153
19962996349,0cyclictest15872-21unixbench-2d22:32:010
141620,0rcu_preempt13-21ksoftirqd/022:06:170
19972996154,0cyclictest0-21swapper/200:22:012
1996699610,0cyclictest2399migration/121:06:391
1996699610,0cyclictest2399migration/121:06:391
1996299592,0cyclictest218599rtkit-daemon21:31:550
141590,0rcu_preempt13-21ksoftirqd/021:11:170
141590,0rcu_preempt13-21ksoftirqd/021:11:170
361580,0irq_work/3381rcuc/323:01:423
19977995846,0cyclictest0-21swapper/300:11:113
141580,0rcu_preempt13-21ksoftirqd/023:51:180
141580,0rcu_preempt0-21swapper/119:03:381
141580,0rcu_preempt0-21swapper/119:03:381
19977995745,0cyclictest7176-21runrttasks19:47:193
141570,0rcu_preempt39-21ksoftirqd/320:26:463
141570,0rcu_preempt13-21ksoftirqd/021:26:420
221560,0irq_work/1241rcuc/123:56:571
221560,0irq_work/1241rcuc/122:40:301
1996699562,0cyclictest218599rtkit-daemon23:11:571
141560,0rcu_preempt25-21ksoftirqd/121:36:561
141560,0rcu_preempt25-21ksoftirqd/119:41:431
141550,0rcu_preempt39-21ksoftirqd/319:31:503
141550,0rcu_preempt25-21ksoftirqd/120:36:181
291540,0irq_work/2311rcuc/222:26:512
1996699543,0cyclictest218599rtkit-daemon21:58:581
141540,0rcu_preempt32-21ksoftirqd/222:16:172
141540,0rcu_preempt32-21ksoftirqd/222:16:172
291530,0irq_work/2311rcuc/222:56:452
141530,0rcu_preempt3004-21latency23:16:473
141530,0rcu_preempt13-21ksoftirqd/020:01:470
361520,0irq_work/3381rcuc/322:29:383
221520,0irq_work/1241rcuc/121:45:581
221520,0irq_work/1241rcuc/120:40:591
221520,0irq_work/1241rcuc/119:18:081
1996699522,0cyclictest218599rtkit-daemon22:08:291
181520,0irq_work/0161rcuc/021:46:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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