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2026-06-19 - 07:14
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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 100 highest latencies:
System rackbslot7.osadl.org (updated Fri Jun 19, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48599910280,16cyclictest2358-21sh00:19:220
3392210117,60sleep23384-21apt-get18:54:042
1051621010,7sleep10-21swapper/121:49:231
1051621010,7sleep10-21swapper/121:49:231
3909210011,63sleep03933-21awk18:55:120
4873999778,11cyclictest0-21swapper/220:34:212
4873999778,11cyclictest0-21swapper/220:34:212
4873999772,15cyclictest0-21swapper/219:29:232
4873999678,9cyclictest0-21swapper/222:44:102
4867999674,17cyclictest4850-21cyclictest21:15:031
4867999674,17cyclictest4850-21cyclictest21:15:031
4867999641,21cyclictest3553-21latency_hist20:33:501
4867999641,21cyclictest3553-21latency_hist20:33:501
4859999655,7cyclictest181rcu_preempt23:10:420
4873999577,12cyclictest0-21swapper/219:04:182
221002950,7sleep222098-21ssh21:14:532
221002950,7sleep222098-21ssh21:14:532
4859999445,21cyclictest0-21swapper/021:48:500
4859999350,7cyclictest181rcu_preempt21:39:460
4859999250,7cyclictest181rcu_preempt23:35:470
4859999170,12cyclictest0-21swapper/021:04:090
4859999169,12cyclictest0-21swapper/019:04:160
4873999074,9cyclictest0-21swapper/220:39:112
4859998974,10cyclictest170-21jbd2/mmcblk2p2-821:09:200
4859998969,11cyclictest0-21swapper/022:34:540
4859998954,7cyclictest181rcu_preempt23:49:140
4867998870,9cyclictest0-21swapper/123:48:521
4867998843,12cyclictest181rcu_preempt21:03:471
4859998870,10cyclictest0-21swapper/020:19:160
4859998869,9cyclictest0-21swapper/018:59:100
4867998750,7cyclictest181rcu_preempt22:03:081
4859998767,11cyclictest0-21swapper/019:34:210
4873998670,9cyclictest0-21swapper/219:23:512
4873998571,7cyclictest0-21swapper/222:03:472
4873998561,14cyclictest0-21swapper/222:14:132
4859998570,8cyclictest0-21swapper/022:04:160
4859998568,12cyclictest0-21swapper/020:14:120
4859998568,11cyclictest0-21swapper/022:49:250
4859998568,11cyclictest0-21swapper/022:49:250
4859998549,8cyclictest181rcu_preempt22:47:360
4859998549,7cyclictest181rcu_preempt22:29:160
4859998549,7cyclictest181rcu_preempt22:29:160
4873998468,11cyclictest0-21swapper/221:09:162
4873998461,13cyclictest0-21swapper/222:53:502
4873998461,13cyclictest0-21swapper/222:53:502
487399843,35cyclictest12111-21apt-get20:59:002
4859998468,10cyclictest0-21swapper/023:19:120
4859998468,10cyclictest0-21swapper/023:19:120
4859998466,10cyclictest0-21swapper/023:04:230
4859998459,13cyclictest0-21swapper/019:13:500
4859998459,13cyclictest0-21swapper/019:13:500
4873998369,8cyclictest0-21swapper/219:14:122
4873998369,8cyclictest0-21swapper/200:19:022
4873998366,10cyclictest58-21kcompactd022:19:212
4873998364,12cyclictest0-21swapper/222:58:512
4873998362,11cyclictest0-21swapper/223:53:502
4873998338,13cyclictest0-21swapper/222:29:032
4873998338,13cyclictest0-21swapper/222:29:032
4859998365,13cyclictest0-21swapper/019:54:230
4859998365,13cyclictest0-21swapper/019:44:220
4859998348,25cyclictest0-21swapper/023:39:240
4859998344,9cyclictest181rcu_preempt21:55:090
471028311,46sleep14745-21munin-run18:58:481
4859998242,13cyclictest181rcu_preempt20:04:090
4859998239,7cyclictest181rcu_preempt21:36:350
4873998163,11cyclictest0-21swapper/223:13:502
4873998159,13cyclictest0-21swapper/219:34:152
4873998151,8cyclictest181rcu_preempt23:30:012
4873998151,8cyclictest181rcu_preempt23:30:012
4859998167,7cyclictest0-21swapper/020:54:250
4859998158,13cyclictest0-21swapper/022:55:270
4859998138,7cyclictest181rcu_preempt22:17:310
4873998063,9cyclictest0-21swapper/221:39:112
4873998060,10cyclictest0-21swapper/222:24:252
4873998059,11cyclictest0-21swapper/220:09:072
4873998044,11cyclictest58-21kcompactd021:46:462
4867998055,18cyclictest9905-21munin-plugin-st22:43:491
4867998055,18cyclictest9905-21munin-plugin-st22:43:491
486799803,43cyclictest16447-21apt-get22:54:051
4859998065,10cyclictest0-21swapper/000:09:050
4859998058,16cyclictest11085-21ntpd21:49:230
4859998058,16cyclictest11085-21ntpd21:49:230
4873997963,9cyclictest0-21swapper/219:43:492
4873997963,9cyclictest0-21swapper/219:43:492
4873997960,11cyclictest0-21swapper/221:54:032
4873997960,11cyclictest0-21swapper/220:29:082
4873997960,11cyclictest0-21swapper/220:29:082
4873997958,12cyclictest0-21swapper/220:19:142
4867997959,11cyclictest8950-21kworker/u17:0-rpciod23:38:491
4867997944,8cyclictest16295-21ssh22:53:521
4867997944,8cyclictest16295-21ssh22:53:521
4859997961,11cyclictest0-21swapper/021:14:470
4859997961,11cyclictest0-21swapper/021:14:470
4859997960,10cyclictest0-21swapper/020:39:230
4859997953,17cyclictest14845-21latency_hist21:03:490
4859997950,7cyclictest181rcu_preempt23:03:510
4859997943,14cyclictest181rcu_preempt00:28:470
4873997860,9cyclictest0-21swapper/223:55:292
4867997850,8cyclictest181rcu_preempt23:20:301
4867997850,8cyclictest181rcu_preempt23:20:301
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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