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2025-12-18 - 15:27
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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 792 highest latencies:
System rack1slot8.osadl.org (updated Thu Dec 18, 2025 12:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10655999132,6cyclictest29494-21strings08:00:180
1065699442363,48cyclictest0-21swapper/107:10:511
1065599419341,51cyclictest0-21swapper/007:10:500
104682410386,17sleep00-21swapper/007:08:300
799221440,3sleep17993-21sh10:33:141
148362760,2sleep0221rcuc/011:39:080
1065699745,10cyclictest0-21swapper/110:43:121
1065699725,14cyclictest0-21swapper/109:56:091
1065599722,44cyclictest1700-21ssh12:10:250
1054827233,28sleep10-21swapper/107:09:181
236062710,9sleep01065599cyclictest09:12:140
1065699718,6cyclictest0-21swapper/108:00:021
1065699716,14cyclictest0-21swapper/109:26:251
1065699715,14cyclictest0-21swapper/112:07:291
1065699715,13cyclictest0-21swapper/111:27:161
1065699713,8cyclictest12601-21cpuspeed11:35:131
10655997117,48cyclictest88850irq/46-eth0-tx-10:19:140
23152700,6sleep00-21swapper/010:24:080
1065699705,15cyclictest0-21swapper/112:35:091
1065699705,15cyclictest0-21swapper/109:11:061
1065699705,15cyclictest0-21swapper/108:00:201
1065699705,14cyclictest0-21swapper/110:22:391
1065699705,14cyclictest0-21swapper/110:14:581
1065699705,13cyclictest0-21swapper/110:15:281
1065699704,15cyclictest0-21swapper/111:01:251
1065699695,25cyclictest0-21swapper/111:32:541
1065699695,15cyclictest0-21swapper/109:54:341
1065699695,14cyclictest0-21swapper/109:20:331
1065699695,13cyclictest0-21swapper/111:59:561
1065699695,13cyclictest0-21swapper/110:01:331
1065699694,13cyclictest0-21swapper/109:36:411
10655996927,28cyclictest8250irq/14-pata_sch12:25:020
1065699685,14cyclictest0-21swapper/112:27:101
1065699685,14cyclictest0-21swapper/111:53:451
1065699685,14cyclictest0-21swapper/110:56:261
1065699685,13cyclictest0-21swapper/110:37:501
1065699684,8cyclictest31811-21munin-node08:05:251
1065699683,9cyclictest88750irq/45-eth0-rx-11:45:261
1065699683,10cyclictest17419-21runrttasks10:49:361
10656996821,41cyclictest30048-21munin-run12:05:011
10656996811,49cyclictest0-21swapper/109:06:561
1065599682,59cyclictest12630-21sh10:40:240
1065599682,58cyclictest25415-21unixbench_multi11:55:270
1065699675,14cyclictest0-21swapper/111:15:321
1065699675,14cyclictest0-21swapper/108:54:021
1065699675,13cyclictest0-21swapper/110:50:051
1065699675,11cyclictest0-21swapper/112:13:241
1065699675,10cyclictest0-21swapper/110:26:321
1065699674,15cyclictest0-21swapper/111:11:311
1065699674,10cyclictest0-21swapper/108:29:101
1065699673,9cyclictest24918-21munin-node09:15:131
1065699673,8cyclictest19818-21munin-node07:35:181
1065699672,7cyclictest13491-21sh09:48:381
10656996715,44cyclictest0-21swapper/108:35:221
1065699665,8cyclictest9027-21munin-run08:35:011
1065699665,16cyclictest0-21swapper/110:07:191
1065699665,15cyclictest0-21swapper/111:24:221
1065699665,14cyclictest0-21swapper/111:08:451
1065699664,13cyclictest0-21swapper/109:41:531
1065699663,9cyclictest88750irq/45-eth0-rx-11:40:141
1065599665,50cyclictest0-21swapper/008:21:000
10655996626,28cyclictest8250irq/14-pata_sch07:34:590
1065599662,58cyclictest7932-21crond09:40:010
1065599662,57cyclictest28911-21ssh11:08:140
1065599662,57cyclictest13392-21munin-node08:45:180
1065599662,43cyclictest2400-21hwlatdetect08:15:160
10655996619,41cyclictest88850irq/46-eth0-tx-11:23:310
1065699655,16cyclictest0-21swapper/112:19:371
1065699655,15cyclictest0-21swapper/112:21:291
1065699655,15cyclictest0-21swapper/109:04:381
1065699655,14cyclictest0-21swapper/112:33:451
1065699654,14cyclictest0-21swapper/109:34:191
1065699653,10cyclictest22800-21vmstat07:40:271
1065699652,9cyclictest393-21gltestperf08:10:161
1065699652,8cyclictest13857-21unixbench_multi08:45:241
1065599655,53cyclictest0-21swapper/009:45:160
10655996522,27cyclictest88850irq/46-eth0-tx-12:30:180
10655996520,39cyclictest88850irq/46-eth0-tx-10:50:290
1065599652,57cyclictest30813-21ssh09:25:000
1065599652,57cyclictest28771-21runrttasks10:14:330
1065599652,57cyclictest16240-21latency_hist08:55:010
1065599652,56cyclictest21255-21ssh10:00:270
1065599652,56cyclictest15818-21ssh12:35:110
1065599652,50cyclictest22711-21diskmemload11:50:550
1065599652,38cyclictest24905-21ssh09:15:140
10655996510,50cyclictest31919-21processes09:25:250
228699640,4rtkit-daemon2285-21rtkit-daemon09:55:330
1065699647,12cyclictest11614-21munin-node08:40:201
1065699645,9cyclictest25753-21munin-node07:50:181
1065699644,9cyclictest3616-21munin-run08:20:001
1065699643,23cyclictest18109-21munin-node07:30:131
1065699643,13cyclictest13508-21munin-node07:15:231
1065699643,11cyclictest23494-21aten_r1power_fr07:45:141
1065599643,46cyclictest10100-21ssh10:35:390
1065599642,56cyclictest21482-21runrttasks09:08:130
1065599642,55cyclictest543-21munin-node11:15:150
1065599642,55cyclictest19818-21munin-node07:35:240
10655996415,34cyclictest88850irq/46-eth0-tx-11:10:030
1065599641,56cyclictest8188-21ssh10:33:500
1065699633,10cyclictest16335-21munin-node07:25:141
10656996315,40cyclictest88750irq/45-eth0-rx-08:20:101
1065599637,31cyclictest3528-21ssh10:25:220
1065599633,37cyclictest8735-21ssh11:28:460
1065599632,55cyclictest5955-21ssh12:17:590
1065599632,55cyclictest27361-21runrttasks12:00:130
1065599632,55cyclictest16053-21latency_hist07:25:000
1065599632,54cyclictest30227-21ssh12:05:100
1065599632,54cyclictest28679-21idleruntime-cro08:00:010
10655996315,42cyclictest88850irq/46-eth0-tx-12:27:430
10655996315,32cyclictest88850irq/46-eth0-tx-10:45:570
1065699625,15cyclictest0-21swapper/107:20:231
1065599625,51cyclictest0-21swapper/008:35:210
1065599623,53cyclictest7933-21latency_hist09:40:020
1065599622,53cyclictest22831-21ssh10:57:590
1065599622,46cyclictest16655-21ssh11:40:390
1065599622,46cyclictest15895-21ssh09:51:560
1065599622,41cyclictest18337-21ssh11:45:120
1065699613,9cyclictest16804-21gltestperf08:55:141
10655996139,17cyclictest0-21swapper/011:02:220
10655996139,16cyclictest0-21swapper/007:45:220
1065599612,53cyclictest390-21grep08:10:160
1065599612,53cyclictest31204-21latency08:05:170
1065599612,53cyclictest24883-21kworker/0:209:34:060
1065599612,53cyclictest24211-21timerwakeupswit10:05:250
1065599612,52cyclictest19863-21latency_hist09:05:010
1065599602,48cyclictest7374-21munin-node08:30:120
1065599592,50cyclictest1189-21snmpd11:30:130
1065599572,49cyclictest11699-21taskset08:40:210
1065599566,44cyclictest12952-21gltestperf07:15:140
10655995633,18cyclictest0-21swapper/007:54:140
1065599562,33cyclictest1568-21runrttasks07:40:110
10655995617,33cyclictest1568-21runrttasks08:27:420
1065599554,28cyclictest0-21swapper/007:25:190
1065599542,29cyclictest15116-21irqstats08:50:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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