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2026-08-11 - 01:48
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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 Tue Aug 11, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146139917941715,53cyclictest0-21swapper/019:11:470
12931276920,29sleep00-21swapper/019:05:090
1461399518431,78cyclictest1568-21runrttasks00:27:150
1461499475425,36cyclictest0-21swapper/119:11:471
1461499424382,28cyclictest0-21swapper/100:27:151
1461399415356,46cyclictest13-21rcu_preempt22:00:180
146149913041,70cyclictest0-21swapper/123:56:591
146149912552,51cyclictest0-21swapper/122:50:001
146149912552,51cyclictest0-21swapper/122:49:591
14614998112,48cyclictest0-21swapper/119:39:591
14614997711,59cyclictest0-21swapper/122:00:001
14614997711,59cyclictest0-21swapper/122:00:001
14613997744,27cyclictest0-21swapper/019:50:180
14613997717,54cyclictest88850irq/46-eth0-tx-21:41:470
228699750,4rtkit-daemon32661-21ssh22:21:401
1461499732,55cyclictest88750irq/45-eth0-rx-23:16:591
14613997343,25cyclictest0-21swapper/020:15:190
1461399732,61cyclictest24981-21diskmemload21:31:420
14614997211,54cyclictest0-21swapper/120:29:001
14613997248,16cyclictest0-21swapper/020:45:010
1461399722,65cyclictest17149-21rm21:54:120
1461399722,43cyclictest17561-21munin-node21:55:150
1461399722,43cyclictest17561-21munin-node21:55:150
228699710,3rtkit-daemon2285-21rtkit-daemon19:07:261
14614997123,34cyclictest0-21swapper/100:23:591
14614997116,36cyclictest0-21swapper/120:20:011
14613997149,17cyclictest0-21swapper/020:25:120
1461399712,40cyclictest32307-21ssh21:21:590
257492700,3sleep125747-21basename22:10:121
14614997020,30cyclictest0-21swapper/121:13:001
1461399706,57cyclictest30537-21ssh22:18:400
1461399706,57cyclictest0-21swapper/000:16:360
14613997021,43cyclictest88850irq/46-eth0-tx-22:34:020
14614996916,36cyclictest0-21swapper/123:11:001
14614996914,32cyclictest0-21swapper/100:11:581
1461399697,55cyclictest0-21swapper/023:50:120
14613996946,17cyclictest0-21swapper/023:30:020
1461399693,58cyclictest10838-21ssh22:40:290
1461399692,61cyclictest27814-21munin-node21:15:220
1461399692,60cyclictest6560-21latency_hist21:35:020
1461399692,45cyclictest14868-21ssh23:49:320
1461399692,42cyclictest8807-21ssh22:37:490
14613996918,44cyclictest88850irq/46-eth0-tx-23:43:240
307132680,4sleep130714-21ssh00:18:071
14614996817,34cyclictest0-21swapper/120:51:591
14614996816,35cyclictest0-21swapper/121:21:591
1461399685,56cyclictest0-21swapper/022:11:370
1461399684,57cyclictest1546-21basename22:25:130
1461399683,57cyclictest3473-21munin-node20:10:240
1461399683,35cyclictest25138-21rm23:08:090
1461399682,60cyclictest26578-21latency_hist19:45:020
1461399682,58cyclictest31829-21netstat22:20:220
14613996818,44cyclictest88850irq/46-eth0-tx-23:15:180
14614996716,32cyclictest0-21swapper/122:16:001
14614996711,37cyclictest0-21swapper/100:06:591
1461399677,52cyclictest0-21swapper/019:55:150
14613996745,16cyclictest0-21swapper/021:25:180
14613996744,17cyclictest0-21swapper/023:20:110
1461399674,55cyclictest24275-21ssh00:05:290
1461399673,40cyclictest14371-21ssh22:48:250
1461399673,40cyclictest14371-21ssh22:48:250
1461399672,59cyclictest32615-21unixbench_singl00:20:300
1461399672,58cyclictest1568-21runrttasks19:21:420
1461399672,57cyclictest15957-21ssh22:50:270
14613996719,36cyclictest88850irq/46-eth0-tx-00:37:150
14613996712,50cyclictest0-21swapper/000:00:590
14613996712,48cyclictest0-21swapper/022:05:180
14614996618,30cyclictest0-21swapper/120:12:591
14614996617,32cyclictest0-21swapper/122:08:591
14614996616,36cyclictest0-21swapper/121:15:591
14614996616,32cyclictest0-21swapper/121:47:591
14614996615,33cyclictest0-21swapper/121:05:591
14614996614,36cyclictest0-21swapper/119:55:001
14614996613,34cyclictest0-21swapper/120:44:001
1461399666,53cyclictest0-21swapper/023:56:080
1461399666,53cyclictest0-21swapper/021:45:180
1461399665,54cyclictest0-21swapper/023:35:110
1461399665,54cyclictest0-21swapper/023:13:430
14613996644,16cyclictest0-21swapper/019:20:010
1461399663,55cyclictest22539-21runrttasks19:30:430
14614996516,30cyclictest0-21swapper/123:50:591
14614996514,33cyclictest0-21swapper/120:20:591
1461399655,52cyclictest0-21swapper/020:00:210
1461399653,55cyclictest25355-21cut19:40:170
14613996521,37cyclictest88850irq/46-eth0-tx-23:26:500
1461399652,53cyclictest22751-21crond21:01:010
14613996511,47cyclictest0-21swapper/021:06:000
14614996417,33cyclictest0-21swapper/119:41:001
14614996417,29cyclictest0-21swapper/119:25:591
14614996416,35cyclictest0-21swapper/121:04:591
14614996416,32cyclictest0-21swapper/121:33:591
14614996416,32cyclictest0-21swapper/120:34:591
14614996415,33cyclictest0-21swapper/122:03:591
14614996413,37cyclictest0-21swapper/119:48:591
14614996413,33cyclictest0-21swapper/100:37:581
1461399643,55cyclictest28068-21ssh00:13:210
1461399643,55cyclictest21726-21ssh23:00:430
1461399643,55cyclictest18253-21iostat22:55:180
1461399643,54cyclictest4737-21munin-node00:30:130
1461399643,54cyclictest24282-21grep19:35:240
1461399642,55cyclictest20605-21grep19:25:260
14614996316,32cyclictest0-21swapper/119:59:001
14614996314,33cyclictest0-21swapper/122:41:001
1461399633,53cyclictest14351-21kworker/0:221:10:260
1461399632,53cyclictest18356-21basename20:50:170
1461399632,40cyclictest8103-21munin-node20:20:260
14613996313,45cyclictest13549-21unixbench-2d20:35:250
228699620,8rtkit-daemon0-21swapper/020:58:180
14614996214,31cyclictest0-21swapper/123:05:001
14614996214,31cyclictest0-21swapper/121:27:591
14614996213,34cyclictest0-21swapper/120:48:591
14614996212,33cyclictest0-21swapper/123:26:591
1461399623,52cyclictest16104-21basename20:45:120
14614996117,34cyclictest0-21swapper/122:51:001
14614996116,33cyclictest0-21swapper/120:58:591
14614996116,31cyclictest0-21swapper/123:41:591
14614996115,33cyclictest0-21swapper/121:37:591
1461399613,31cyclictest2673-21timerwakeupswit20:05:260
14614996015,32cyclictest0-21swapper/119:24:591
14614996015,30cyclictest0-21swapper/119:30:591
14614996013,30cyclictest0-21swapper/123:35:001
1461399603,44cyclictest10710-21telnet20:30:110
137522605,14sleep10-21swapper/123:45:351
14614995916,32cyclictest0-21swapper/122:26:591
14614995914,31cyclictest0-21swapper/121:52:591
14614995813,32cyclictest0-21swapper/123:39:001
14614995813,31cyclictest0-21swapper/100:03:591
14614995810,32cyclictest0-21swapper/120:35:591
14614995711,32cyclictest0-21swapper/119:17:591
14614995616,26cyclictest0-21swapper/100:32:581
14614995612,30cyclictest0-21swapper/120:03:591
191462554,12sleep10-21swapper/122:56:101
14614995515,28cyclictest0-21swapper/123:07:591
14614995513,31cyclictest0-21swapper/122:35:591
14614995415,30cyclictest0-21swapper/121:42:001
14614995414,30cyclictest0-21swapper/123:20:591
14614995112,27cyclictest0-21swapper/122:35:001
30952504,12sleep10-21swapper/120:07:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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