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2026-04-02 - 08:48
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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 highest latencies:
System rack1slot8.osadl.org (updated Thu Apr 02, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27329918801777,96cyclictest0-21swapper/019:30:010
2401275924,727sleep00-21swapper/019:07:040
273299485408,51cyclictest0-21swapper/019:10:050
273399434355,48cyclictest0-21swapper/119:10:051
273399399304,18cyclictest10012-21sed19:30:011
27339910012,64cyclictest0-21swapper/123:58:591
247629877,15sleep10-21swapper/119:07:531
2733999220,48cyclictest0-21swapper/123:53:591
228699830,6rtkit-daemon2285-21rtkit-daemon19:30:180
228699830,6rtkit-daemon2285-21rtkit-daemon19:30:180
228699810,4rtkit-daemon2285-21rtkit-daemon20:45:141
2732997847,26cyclictest0-21swapper/021:55:000
2733997717,39cyclictest0-21swapper/122:14:591
2733997713,42cyclictest0-21swapper/120:11:591
45802760,4sleep04582-21wc23:45:240
2733997619,33cyclictest0-21swapper/122:06:001
2733997615,34cyclictest0-21swapper/120:28:591
2733997615,34cyclictest0-21swapper/120:28:591
2732997662,9cyclictest0-21swapper/022:19:590
273299765,65cyclictest0-21swapper/022:10:500
2732997614,55cyclictest0-21swapper/022:35:120
228699760,4rtkit-daemon2285-21rtkit-daemon23:21:521
228699760,4rtkit-daemon2285-21rtkit-daemon21:54:151
2733997418,34cyclictest0-21swapper/123:10:591
2733997412,41cyclictest0-21swapper/120:36:591
228699730,4rtkit-daemon2285-21rtkit-daemon23:03:411
2733997216,33cyclictest0-21swapper/121:00:001
2733997118,35cyclictest0-21swapper/121:31:591
2733997117,35cyclictest0-21swapper/120:20:591
2733997117,35cyclictest0-21swapper/120:20:591
2733997116,35cyclictest0-21swapper/122:37:591
2733997114,37cyclictest0-21swapper/120:33:591
273299716,58cyclictest0-21swapper/022:25:000
273299716,58cyclictest0-21swapper/022:25:000
2732997144,22cyclictest0-21swapper/023:09:220
273299712,61cyclictest28066-21rm21:34:440
32692700,3sleep0221rcuc/020:40:130
2733997016,35cyclictest0-21swapper/119:21:001
2733997016,33cyclictest0-21swapper/100:31:591
2732997042,21cyclictest0-21swapper/000:05:160
2732997041,17cyclictest0-21swapper/022:05:210
273299704,58cyclictest0-21swapper/023:30:180
273299702,53cyclictest21328-21ssh21:21:430
2733996919,31cyclictest0-21swapper/120:42:001
2733996918,35cyclictest0-21swapper/121:03:591
2733996914,32cyclictest0-21swapper/123:29:001
2732996948,17cyclictest0-21swapper/022:30:140
273299693,43cyclictest32205-21ssh23:37:500
273299692,59cyclictest22559-21latency_hist20:05:010
273299692,59cyclictest13729-21latency_hist21:10:010
2732996919,43cyclictest88850irq/46-eth0-tx-21:42:030
2733996816,30cyclictest0-21swapper/122:15:591
2733996815,31cyclictest0-21swapper/123:06:001
273299685,56cyclictest0-21swapper/019:15:130
2732996819,37cyclictest88850irq/46-eth0-tx-22:54:480
2732996816,46cyclictest88850irq/46-eth0-tx-23:50:260
273399673,49cyclictest9480-21ssh22:55:591
2733996718,31cyclictest0-21swapper/121:55:591
2733996717,33cyclictest0-21swapper/119:33:001
2733996717,33cyclictest0-21swapper/119:33:001
2733996716,32cyclictest0-21swapper/121:48:591
2733996715,34cyclictest0-21swapper/119:54:591
2733996715,32cyclictest0-21swapper/121:13:591
2732996744,17cyclictest0-21swapper/023:55:510
2732996744,17cyclictest0-21swapper/023:25:460
2732996738,22cyclictest0-21swapper/022:48:120
273299672,55cyclictest27041-21ntp_kernel_err20:15:200
273299672,40cyclictest15868-21ssh21:12:480
273299672,36cyclictest3288-21ssh21:46:500
2732996718,44cyclictest0-21swapper/000:17:000
2732996717,43cyclictest88850irq/46-eth0-tx-00:27:230
2733996619,34cyclictest0-21swapper/122:51:591
2733996617,31cyclictest0-21swapper/121:17:591
2732996645,15cyclictest0-21swapper/000:30:200
2732996643,18cyclictest0-21swapper/023:00:240
273299663,56cyclictest9496-21runrttasks22:56:020
273299663,53cyclictest7722-21unixbench-2d20:50:240
2732996623,37cyclictest0-21swapper/019:50:200
273299662,57cyclictest32620-21munin-node22:40:180
273299662,57cyclictest28112-21ksmtuned20:20:030
273299662,57cyclictest28112-21ksmtuned20:20:030
273299662,57cyclictest18485-21ssh23:13:150
273299662,44cyclictest13690-21munin-node19:40:200
273299662,41cyclictest29847-21ssh21:36:170
2732996616,44cyclictest88850irq/46-eth0-tx-22:02:150
2732996613,47cyclictest24886-21ssh00:22:580
2733996516,28cyclictest0-21swapper/119:37:591
2733996516,28cyclictest0-21swapper/119:37:591
2733996515,31cyclictest0-21swapper/120:19:591
2733996515,30cyclictest0-21swapper/119:42:001
2733996514,34cyclictest0-21swapper/120:09:591
2733996513,34cyclictest0-21swapper/100:20:001
2733996513,33cyclictest0-21swapper/123:18:591
2733996512,36cyclictest0-21swapper/121:05:591
273299653,55cyclictest9428-21ls20:55:250
273299653,55cyclictest24065-21ssh21:26:140
273299653,52cyclictest25604-21unixbench_multi20:10:240
273299652,56cyclictest18291-21runrttasks21:16:210
273299652,52cyclictest20545-21ssh23:15:480
273299652,40cyclictest23440-21ssh23:21:150
273299652,39cyclictest25645-21ssh22:27:340
273399649,36cyclictest0-21swapper/123:47:591
2733996417,28cyclictest0-21swapper/119:15:591
2733996416,29cyclictest0-21swapper/122:01:591
2733996415,30cyclictest0-21swapper/121:40:591
2733996412,36cyclictest0-21swapper/119:59:591
2732996441,17cyclictest0-21swapper/019:39:590
2732996441,17cyclictest0-21swapper/019:39:590
2732996425,32cyclictest88850irq/46-eth0-tx-20:45:170
2732996425,31cyclictest0-21swapper/000:10:140
273299642,56cyclictest14201-21ssh00:04:150
273299642,55cyclictest24361-21latency_hist20:10:000
273299642,54cyclictest8200-21munin-node21:55:250
2732996417,41cyclictest569-21munin-node23:40:140
273399635,36cyclictest0-21swapper/123:30:591
2733996312,34cyclictest0-21swapper/121:23:591
2733996312,30cyclictest0-21swapper/123:40:591
273299632,54cyclictest15569-21munin-node19:45:130
2733996212,33cyclictest0-21swapper/120:02:001
273299623,53cyclictest19102-21munin-node19:55:110
273299622,54cyclictest30179-21munin-node20:25:140
273299622,54cyclictest30179-21munin-node20:25:140
273299622,54cyclictest10460-21cpu21:00:130
273299622,52cyclictest31738-21munin-node20:30:180
2732996216,40cyclictest13733-21diskmemload00:35:200
2733996117,30cyclictest0-21swapper/122:42:001
2733996117,29cyclictest0-21swapper/120:53:001
2733996112,30cyclictest0-21swapper/119:49:591
273299602,51cyclictest2794-21runrttasks20:39:040
286942595,14sleep10-21swapper/122:33:311
2733995915,26cyclictest0-21swapper/121:38:591
244442594,12sleep10-21swapper/121:27:271
228699590,10rtkit-daemon0-21swapper/000:06:081
273399589,34cyclictest0-21swapper/100:28:591
2733995813,29cyclictest0-21swapper/100:03:001
2732995832,20cyclictest0-21swapper/019:20:140
2733995715,27cyclictest0-21swapper/100:14:591
2733995711,29cyclictest0-21swapper/100:23:001
319272565,16sleep10-21swapper/123:36:541
2733995412,26cyclictest0-21swapper/122:46:001
233042544,11sleep10-21swapper/122:24:041
233042544,11sleep10-21swapper/122:24:041
251352534,13sleep10-21swapper/122:25:521
273399435,31cyclictest0-21swapper/100:35:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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