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2026-05-21 - 05:23
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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 Thu May 21, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3271399903841,50cyclictest0-21swapper/019:13:160
3271499856793,47cyclictest0-21swapper/119:13:151
310242348321,18sleep00-21swapper/019:05:040
804921000,3sleep041ktimersoftd/023:56:110
3259929070,14sleep10-21swapper/119:09:131
32713998869,14cyclictest0-21swapper/023:26:590
32714998514,53cyclictest0-21swapper/120:19:001
32714998511,57cyclictest0-21swapper/123:11:001
32713998268,9cyclictest0-21swapper/022:05:580
152902810,3sleep015292-21gltestperf00:10:150
86452800,12sleep041ktimersoftd/022:00:270
3271499783,55cyclictest11602-21sh22:05:591
32713997747,25cyclictest0-21swapper/022:25:190
32713997441,28cyclictest0-21swapper/000:39:030
32714997318,40cyclictest0-21swapper/123:20:581
3271399736,59cyclictest0-21swapper/000:05:180
3271399736,59cyclictest0-21swapper/000:05:170
32713997347,17cyclictest0-21swapper/023:50:180
32713997216,50cyclictest29353-21ssh22:39:480
32714997118,33cyclictest0-21swapper/120:12:001
32713997145,21cyclictest0-21swapper/023:45:190
32714997015,38cyclictest0-21swapper/121:47:001
32713997047,15cyclictest0-21swapper/020:50:010
32713997043,22cyclictest0-21swapper/022:49:190
32713997043,21cyclictest0-21swapper/023:09:590
3271399703,50cyclictest2414-21ssh21:50:170
32713997017,46cyclictest24576-21taskset00:25:520
32714996916,35cyclictest0-21swapper/120:31:001
32714996915,39cyclictest0-21swapper/100:00:581
32714996915,39cyclictest0-21swapper/100:00:581
32714996912,39cyclictest0-21swapper/123:36:581
3271399695,57cyclictest0-21swapper/022:51:090
32713996947,18cyclictest0-21swapper/021:30:000
32713996946,15cyclictest0-21swapper/020:40:210
32713996945,16cyclictest0-21swapper/019:25:180
32713996941,21cyclictest0-21swapper/022:10:290
32713996941,21cyclictest0-21swapper/021:23:080
32713996941,21cyclictest0-21swapper/021:23:080
32713996940,22cyclictest0-21swapper/023:00:310
32713996924,37cyclictest88850irq/46-eth0-tx-23:20:220
3271399692,58cyclictest23085-21ssh21:30:100
32713996919,43cyclictest88850irq/46-eth0-tx-00:20:480
32714996815,35cyclictest0-21swapper/120:08:011
32714996815,31cyclictest0-21swapper/122:27:591
3271399686,54cyclictest0-21swapper/019:35:180
32713996845,18cyclictest0-21swapper/020:00:010
32713996844,17cyclictest0-21swapper/019:20:180
32713996840,21cyclictest0-21swapper/021:17:380
3271399682,58cyclictest27229-21ssh21:35:510
32713996819,42cyclictest88850irq/46-eth0-tx-22:32:470
32714996716,34cyclictest0-21swapper/100:34:581
32713996746,17cyclictest0-21swapper/020:20:130
32713996741,20cyclictest0-21swapper/023:34:490
32713996720,34cyclictest88850irq/46-eth0-tx-22:24:330
32713996717,43cyclictest88850irq/46-eth0-tx-23:42:430
32714996616,32cyclictest0-21swapper/119:57:011
32714996615,36cyclictest0-21swapper/120:40:011
32714996615,35cyclictest0-21swapper/100:39:591
32714996613,36cyclictest0-21swapper/123:40:581
32713996641,18cyclictest0-21swapper/021:57:420
3271399662,55cyclictest23865-21latency_hist20:15:010
3271399662,54cyclictest11436-21diskmemload00:32:300
32713996617,37cyclictest88850irq/46-eth0-tx-23:19:070
32713996616,43cyclictest88850irq/46-eth0-tx-22:56:360
228699660,4rtkit-daemon2285-21rtkit-daemon21:00:290
32714996518,33cyclictest0-21swapper/122:35:591
32714996518,32cyclictest0-21swapper/119:46:001
32714996517,32cyclictest0-21swapper/121:44:011
32714996516,34cyclictest0-21swapper/122:22:581
32714996516,31cyclictest0-21swapper/121:13:001
32714996515,31cyclictest0-21swapper/120:22:001
32713996543,15cyclictest0-21swapper/000:15:570
3271399653,40cyclictest17255-21ssh22:16:220
3271399652,56cyclictest11436-21diskmemload21:47:290
3271399652,40cyclictest25668-21latency_hist20:20:010
32714996417,33cyclictest0-21swapper/121:08:001
32714996416,30cyclictest0-21swapper/122:51:591
3271399647,48cyclictest0-21swapper/020:25:140
3271399644,40cyclictest11608-21munin-node21:10:290
32713996435,21cyclictest0-21swapper/023:10:200
32713996430,26cyclictest88850irq/46-eth0-tx-23:35:170
3271399643,46cyclictest30986-21ssh22:40:580
32713996424,33cyclictest88850irq/46-eth0-tx-20:50:210
32714996316,34cyclictest0-21swapper/123:48:591
32714996313,34cyclictest0-21swapper/123:31:581
32713996344,15cyclictest0-21swapper/019:45:160
32713996342,14cyclictest0-21swapper/021:05:220
3271399633,54cyclictest1568-21runrttasks20:55:440
3271399632,38cyclictest11549-21ssh00:03:410
3271399632,38cyclictest11549-21ssh00:03:400
32714996217,33cyclictest0-21swapper/120:50:591
32714996217,30cyclictest0-21swapper/120:26:001
32714996215,34cyclictest0-21swapper/123:16:591
32714996215,33cyclictest0-21swapper/100:24:591
32714996215,31cyclictest0-21swapper/120:40:591
32714996214,33cyclictest0-21swapper/121:56:001
32714996214,33cyclictest0-21swapper/121:38:591
32714996214,28cyclictest0-21swapper/100:10:581
3271399628,45cyclictest0-21swapper/020:00:140
3271399622,53cyclictest31210-21latency_hist21:45:000
3271399622,53cyclictest1568-21runrttasks19:30:040
32713996217,38cyclictest456-21latency_hist20:40:010
32714996116,30cyclictest0-21swapper/122:10:591
32714996115,36cyclictest0-21swapper/123:52:581
32714996114,34cyclictest0-21swapper/119:33:001
3271399616,48cyclictest0-21swapper/020:05:200
3271399612,52cyclictest1189-21snmpd19:16:370
216052615,15sleep10-21swapper/121:26:021
99882604,12sleep10-21swapper/122:04:571
32714996018,29cyclictest0-21swapper/100:07:591
32714996018,29cyclictest0-21swapper/100:07:591
32714996015,28cyclictest0-21swapper/120:56:001
32714996011,34cyclictest0-21swapper/122:59:591
3271499599,36cyclictest0-21swapper/120:00:591
32714995913,31cyclictest0-21swapper/123:01:001
32714995912,31cyclictest0-21swapper/121:17:001
32714995911,32cyclictest0-21swapper/119:19:591
32714995910,34cyclictest0-21swapper/119:52:001
32714995910,33cyclictest0-21swapper/123:07:581
255612595,15sleep10-21swapper/122:31:211
3271499585,39cyclictest0-21swapper/119:29:001
32714995815,32cyclictest0-21swapper/119:24:001
32714995815,29cyclictest0-21swapper/119:36:011
3271399582,50cyclictest15136-21stty19:50:100
3271399582,48cyclictest29426-21sshd20:30:090
85262574,12sleep10-21swapper/121:00:201
32714995716,30cyclictest0-21swapper/100:16:581
32714995715,28cyclictest0-21swapper/122:49:591
32713995717,34cyclictest11386-21munin-node19:40:120
32714995613,28cyclictest0-21swapper/120:47:001
42302554,12sleep10-21swapper/121:54:151
32714995516,29cyclictest0-21swapper/121:24:001
32714995516,29cyclictest0-21swapper/121:23:591
3271499549,35cyclictest0-21swapper/119:42:001
3271499545,35cyclictest0-21swapper/122:43:001
249272544,11sleep10-21swapper/121:32:351
32714995313,32cyclictest0-21swapper/123:56:591
231722534,8sleep10-21swapper/100:25:031
177902534,11sleep10-21swapper/122:18:111
238632524,12sleep10-21swapper/123:26:461
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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