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2023-10-04 - 22:03
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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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rack4slot6.osadl.org (updated Wed Oct 04, 2023 12:44:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1967199565562,2cyclictest19-21ksoftirqd/107:10:051
1967199556554,1cyclictest19-21ksoftirqd/107:10:061
1966499504501,2cyclictest9-21ksoftirqd/007:10:050
16627521070,97pltrace0-21swapper/507:05:225
1910928661,12sleep30-21swapper/307:05:363
2814352840,0pltrace0-21swapper/611:24:576
1915928349,12sleep70-21swapper/707:06:207
1800352820,0pltrace0-21swapper/511:14:575
198822770,0sleep40-21swapper/409:40:224
1943452750,65pltrace0-21swapper/207:10:042
1930627559,12sleep60-21swapper/607:08:286
2308252680,0pltrace23086-21pltrace-run09:09:577
914152670,0pltrace0-21swapper/512:09:575
1696452670,0pltrace16969-21pltrace-run10:09:573
1696452670,0pltrace16969-21pltrace-run10:09:573
1923926245,12sleep40-21swapper/407:07:304
264602610,0sleep30-21swapper/307:20:183
158892480,0sleep50-21swapper/509:35:275
94772250,3chrt1969299cyclictest11:37:124
34672230,0chrt0-21swapper/709:23:277
1970599231,21cyclictest0-21swapper/609:49:406
1970599231,21cyclictest0-21swapper/609:49:406
692052210,1pltrace6926-21pltrace-run09:59:574
692052210,1pltrace6926-21pltrace-run09:59:574
692052210,1pltrace25-21ksoftirqd/210:00:592
692052210,1pltrace25-21ksoftirqd/210:00:592
19692992118,2cyclictest0-21swapper/411:26:194
3194452200,2pltrace19-21ksoftirqd/109:23:181
292622200,1sleep5421rcuc/510:20:295
237822200,0sleep00-21swapper/011:50:300
75652180,1pltrace49-21ksoftirqd/611:30:566
1902952180,2pltrace111rcu_preempt09:43:225
1606352180,2pltrace111rcu_preempt11:48:066
215952170,2pltrace111rcu_preempt12:38:582
19700991711,3cyclictest0-21swapper/508:23:535
19675991712,3cyclictest0-21swapper/210:25:472
19675991712,3cyclictest0-21swapper/208:35:532
19671991711,3cyclictest0-21swapper/107:48:581
19671991711,3cyclictest0-21swapper/107:42:191
1181052170,3pltrace0-21swapper/508:51:215
75652160,2pltrace3643-21sh11:30:480
313922160,0sleep60-21swapper/610:23:356
2503352160,2pltrace111rcu_preempt10:53:591
215952160,2pltrace111rcu_preempt12:39:031
19711991610,3cyclictest0-21swapper/711:30:137
19711991610,3cyclictest0-21swapper/709:51:047
1971199161,8cyclictest0-21swapper/712:33:517
1971199161,4cyclictest0-21swapper/708:07:357
1971199161,3cyclictest0-21swapper/711:11:247
1971199160,4cyclictest0-21swapper/711:07:277
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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