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2025-10-27 - 11:12
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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 376 highest latencies:
System rack1slot8.osadl.org (updated Mon Oct 27, 2025 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2699099929828,78cyclictest0-21swapper/019:10:140
2699199923815,73cyclictest27342-21cpu19:10:151
2699199851738,48cyclictest0-21swapper/120:06:001
2699099842731,51cyclictest0-21swapper/020:06:000
265212294259,29sleep10-21swapper/119:05:441
2168991240,6rtkit-daemon2167-21rtkit-daemon19:08:560
216899890,5rtkit-daemon2167-21rtkit-daemon21:14:590
2699099782,53cyclictest11041-21ssh22:13:550
2699099748,59cyclictest17722-21ssh21:30:100
26990997429,29cyclictest8250irq/14-pata_sch21:16:010
2699099742,47cyclictest15484-21ssh00:14:450
2699099735,62cyclictest11237-21interrupts23:10:190
2699099732,65cyclictest10507-21iostat00:05:180
26990997319,48cyclictest78950irq/46-eth0-tx-21:42:120
26990997311,56cyclictest24264-21ssh22:35:390
2699099725,61cyclictest0-21swapper/020:00:240
2699099722,63cyclictest24119-21ssh00:29:380
2699099722,63cyclictest15579-21rm21:25:240
2699099722,47cyclictest4965-21ssh23:55:220
2699099712,63cyclictest5716-21diskmemload22:01:230
2699099712,62cyclictest2597-21ssh23:50:350
2699099712,62cyclictest22154-21munin-node23:30:210
2699099712,46cyclictest21113-21ssh23:27:200
2699099712,46cyclictest10498-21ssh23:09:570
2699099702,61cyclictest5716-21diskmemload23:18:180
2699099702,61cyclictest18264-21ssh22:25:270
2699099702,61cyclictest16851-21unixbench-2d00:15:260
2699099702,43cyclictest32732-21ssh23:47:490
2699199692,8cyclictest3688-21ssh22:56:291
2699099692,61cyclictest5716-21diskmemload00:31:350
2699099692,61cyclictest32394-21latency_hist19:25:000
2699099692,61cyclictest23545-21latency_hist21:40:020
2699099692,52cyclictest5716-21diskmemload22:54:000
2699099692,45cyclictest21268-21ssh00:24:450
2699099692,42cyclictest32580-21munin-run20:55:010
26990996919,44cyclictest78950irq/46-eth0-tx-23:42:570
2699199685,57cyclictest0-21swapper/121:39:231
2699199684,9cyclictest10967-21df23:10:161
2699199683,58cyclictest18916-21df00:20:171
2699199682,7cyclictest30198-21sh23:43:531
2699199682,7cyclictest24571-21sh22:36:371
2699099683,59cyclictest22772-21latency_hist22:35:010
2699099682,59cyclictest4446-21ssh22:58:560
2699099682,58cyclictest28855-21ssh21:48:300
2699099682,44cyclictest30746-21ssh22:48:050
26990996817,46cyclictest0-21swapper/021:58:400
2699199673,7cyclictest3001-21sh23:51:511
2699099675,55cyclictest29843-21entropy21:50:160
2699099672,42cyclictest6257-21ssh23:00:370
2699199664,41cyclictest0-21swapper/119:30:011
2699199663,57cyclictest22184-21taskset00:25:211
2699199662,58cyclictest16576-21munin-node00:15:231
2699099663,57cyclictest7314-21latency_hist19:45:010
2699099663,57cyclictest7314-21latency_hist19:45:000
2699099663,43cyclictest27874-21iostat00:35:180
2699099662,58cyclictest9307-21runrttasks00:03:330
2699099662,58cyclictest8536-21latency_hist22:10:010
2699099662,58cyclictest30592-21latency_hist19:20:010
2699099662,55cyclictest12804-21timerwakeupswit21:20:260
2699099662,41cyclictest26372-21ssh23:35:480
2699099662,41cyclictest18528-21ssh23:23:140
2699199653,8cyclictest11698-21munin-node22:15:141
2699199652,8cyclictest8720-21ssh00:01:411
2699199652,8cyclictest17305-21ps20:10:241
2699199652,19cyclictest26261-21ssh00:32:191
2699099655,53cyclictest0-21swapper/020:20:180
2699099654,54cyclictest0-21swapper/022:41:250
2699099652,57cyclictest23629-21latency_hist20:30:020
2699099652,56cyclictest8208-21chrt19:45:230
2699099652,56cyclictest27160-21crond20:40:010
2699099652,56cyclictest16650-21ssh22:23:370
2699199645,53cyclictest0-21swapper/122:04:461
2699199644,8cyclictest26799-21aten_r1power_vo21:45:151
2699199644,8cyclictest0-21swapper/121:59:281
2699199644,54cyclictest0-21swapper/123:15:261
2699199643,8cyclictest78850irq/45-eth0-rx-23:25:281
2699199643,54cyclictest12556-21munin-node21:20:231
2699199643,53cyclictest23171-21munin-node23:30:271
2699199642,7cyclictest78850irq/45-eth0-rx-21:40:341
2699199642,7cyclictest13657-21munin-node20:00:241
26991996413,42cyclictest4479-21gltestperf21:05:161
2699199635,51cyclictest0-21swapper/100:05:451
2699199634,9cyclictest0-21swapper/121:26:331
2699199633,7cyclictest6775-21unixbench_singl19:40:261
2699199633,7cyclictest6775-21unixbench_singl19:40:261
2699199633,7cyclictest30893-21aten2.4-expect19:20:141
2699199633,53cyclictest17201-21munin-node23:20:231
2699199633,50cyclictest9558-21munin-node21:15:231
2699199632,8cyclictest5253-21runrttasks19:37:311
2699199632,8cyclictest10692-21ssh22:12:461
2699199632,7cyclictest78850irq/45-eth0-rx-22:07:431
2699199632,7cyclictest18514-21grep21:30:221
2699199632,19cyclictest78850irq/45-eth0-rx-23:37:511
2699099635,52cyclictest0-21swapper/021:05:010
2699099632,55cyclictest11985-21ssh22:15:180
2699099632,43cyclictest4072-21munin-node21:05:180
2699099631,56cyclictest971-21memory20:55:210
2699199629,45cyclictest0-21swapper/100:14:001
2699199624,9cyclictest0-21swapper/122:46:031
2699199624,8cyclictest0-21swapper/123:03:441
2699199624,8cyclictest0-21swapper/122:34:491
2699199624,7cyclictest0-21swapper/122:21:251
2699199624,52cyclictest4966-21munin-node23:55:231
2699199623,52cyclictest28254-21munin-node20:40:241
2699199623,51cyclictest29149-21munin-node19:15:141
2699199623,49cyclictest7890-21munin-node23:05:161
2699199622,7cyclictest78850irq/45-eth0-rx-20:50:271
26991996214,42cyclictest30778-21aten_r1power_cu23:45:121
26991996214,42cyclictest28466-21sh22:44:591
26991996211,45cyclictest30851-21sh21:50:441
2699099622,54cyclictest23861-21aten2.4-expect20:30:130
2699099622,54cyclictest19258-21cat20:15:250
2699099622,54cyclictest16501-21munin-node20:10:230
2699099622,53cyclictest32551-21munin-node19:25:180
2699099622,53cyclictest29133-21munin-node20:45:160
2699099622,36cyclictest10917-21munin-run19:55:000
2699099622,36cyclictest10917-21munin-run19:54:590
2699199615,50cyclictest21001-21munin-node20:20:251
2699199613,8cyclictest27577-21ssh00:35:161
2699199613,7cyclictest26402-21munin-node20:35:241
2699199613,52cyclictest8332-21munin-node19:45:261
2699199613,50cyclictest6285-21munin-node21:10:191
2699199613,50cyclictest2828-21munin-node21:00:211
2699199612,8cyclictest9276-21munin-node19:50:171
2699199612,8cyclictest9276-21munin-node19:50:171
2699199612,8cyclictest32594-21munin-node22:50:281
2699199612,8cyclictest24318-21munin-node20:30:201
2699199612,19cyclictest19165-21munin-node20:15:241
2699099612,53cyclictest3863-21munin-node19:35:140
2699099612,53cyclictest2739-21munin-node19:30:230
2699099612,40cyclictest11077-21munin-node19:55:180
2699199603,8cyclictest29289-21munin-node20:45:151
2699199603,8cyclictest2373-21munin-node19:30:191
2699199603,8cyclictest22018-21munin-node20:25:171
2699199603,51cyclictest11519-21munin-node19:55:181
26991996011,44cyclictest17250-21sh22:25:061
2699099602,52cyclictest27326-21munin-node20:40:110
2699199593,8cyclictest428-21munin-node20:55:141
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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