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2025-12-13 - 20:52
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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 100 highest latencies:
System rackcslot8.osadl.org (updated Sat Dec 13, 2025 12:47:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
330891172164,6phc2sys0-21swapper/207:09:0212
88312127119,6sleep310-21swapper/3107:05:1025
13658991257,116cyclictest151rcu_preempt12:13:2117
13683991125,83cyclictest0-21swapper/2807:14:1621
13683991125,83cyclictest0-21swapper/2807:14:1621
13647991012,91cyclictest0-21swapper/2209:05:1415
13658999826,42cyclictest0-21swapper/2407:10:0917
13658999826,42cyclictest0-21swapper/2407:10:0917
1364799970,96cyclictest15169-21cpuspeed_turbos07:35:1415
1364799970,96cyclictest15169-21cpuspeed_turbos07:35:1415
1364799970,94cyclictest14962-21cpuspeed_turbos12:20:1315
13544999424,34cyclictest0-21swapper/309:13:2423
13683999254,36cyclictest2388-21cpuspeed_turbos12:10:1221
13624999218,19cyclictest0-21swapper/1711:35:329
1364799912,69cyclictest0-21swapper/2207:34:3415
1364799912,69cyclictest0-21swapper/2207:34:3415
1368399900,89cyclictest0-21swapper/2808:55:1621
1219229082,6sleep200-21swapper/2007:07:0813
1368399890,88cyclictest0-21swapper/2808:15:1521
1364799898,64cyclictest0-21swapper/2210:18:0115
13544998928,39cyclictest0-21swapper/307:50:2123
13544998928,39cyclictest0-21swapper/307:50:2123
1368399880,87cyclictest0-21swapper/2812:20:1421
13689998712,16cyclictest0-21swapper/3010:33:4624
1364799871,72cyclictest0-21swapper/2208:25:0015
13586998720,30cyclictest0-21swapper/908:01:4131
13586998720,30cyclictest0-21swapper/908:01:4131
13683998658,27cyclictest28343-21latency_hist09:05:0121
1364799860,78cyclictest136861timerwakeupswit11:50:2415
13544998618,26cyclictest0-21swapper/312:32:4123
13544998617,38cyclictest0-21swapper/308:22:3923
1368399851,81cyclictest955-21systemd-journal09:50:0021
1368399850,83cyclictest0-21swapper/2807:35:2421
1368399850,83cyclictest0-21swapper/2807:35:2421
1368399850,79cyclictest0-21swapper/2807:16:1721
1368399850,79cyclictest0-21swapper/2807:16:1721
1364799852,71cyclictest0-21swapper/2209:45:1915
1364799850,83cyclictest0-21swapper/2212:33:2415
1364799850,78cyclictest0-21swapper/2211:35:0015
1211628578,6sleep130-21swapper/1307:05:575
13683998454,28cyclictest7207-21cpuspeed07:55:1021
13683998454,28cyclictest7207-21cpuspeed07:55:1021
1368399840,82cyclictest0-21swapper/2810:25:0121
13658998435,35cyclictest0-21swapper/2410:45:1217
1364799841,81cyclictest30121-21open_files07:45:2115
1364799841,81cyclictest30121-21open_files07:45:2115
1364799841,81cyclictest14597-21grep07:10:0215
1364799841,81cyclictest14597-21grep07:10:0215
1364799840,83cyclictest0-21swapper/2207:16:2015
1364799840,83cyclictest0-21swapper/2207:16:2015
1364799840,82cyclictest31332-21cut11:40:1715
1364799840,78cyclictest28811cstates07:25:1415
1364799840,78cyclictest28811cstates07:25:1415
1364799840,76cyclictest29617-21ntp_kernel_pll_10:20:2115
1364799840,67cyclictest39831cpuspeed_turbos11:45:1315
13527998419,48cyclictest0-21swapper/007:40:020
13527998419,48cyclictest0-21swapper/007:40:020
1368399830,82cyclictest0-21swapper/2810:40:2121
1368399830,82cyclictest0-21swapper/2807:30:1721
1368399830,82cyclictest0-21swapper/2807:30:1721
1368399830,81cyclictest0-21swapper/2812:30:1121
1368399830,81cyclictest0-21swapper/2812:05:1821
1368399830,75cyclictest0-21swapper/2811:05:1321
1364799832,71cyclictest0-21swapper/2208:50:1715
1364799831,80cyclictest22036-21cpuspeed_turbos09:50:1315
1364799831,80cyclictest18070-21cpuspeed_turbos08:55:1315
1364799830,82cyclictest0-21swapper/2212:00:1515
1364799830,82cyclictest0-21swapper/2210:50:2215
1364799830,82cyclictest0-21swapper/2208:00:1115
1364799830,82cyclictest0-21swapper/2208:00:1115
1364799830,81cyclictest0-21swapper/2210:05:0115
1364799830,80cyclictest5493-21cpuspeed_turbos08:45:1415
1364799830,80cyclictest24904-21cpuspeed_turbos08:35:1415
13629998312,56cyclictest0-21swapper/1809:30:4610
13586998319,29cyclictest0-21swapper/907:15:1331
13586998319,29cyclictest0-21swapper/907:15:1331
327391820,62ptp4l0-21swapper/110:44:301
1368399820,81cyclictest0-21swapper/2812:28:5121
1368399820,81cyclictest0-21swapper/2810:10:1321
1368399820,81cyclictest0-21swapper/2807:45:1921
1368399820,81cyclictest0-21swapper/2807:45:1921
1368399820,80cyclictest31455-21cpuspeed10:50:1321
1368399820,80cyclictest0-21swapper/2811:00:1821
1364799821,79cyclictest21735-21cat09:25:0115
1364799820,81cyclictest0-21swapper/2210:10:1315
1364799820,81cyclictest0-21swapper/2207:50:1615
1364799820,81cyclictest0-21swapper/2207:50:1615
1364799820,80cyclictest11521-21latency09:40:4215
1364799820,80cyclictest0-21swapper/2212:25:1815
1364799820,80cyclictest0-21swapper/2210:33:1315
1364799820,79cyclictest0-21swapper/2208:25:1415
1364799820,74cyclictest0-21swapper/2210:46:2915
13624998217,39cyclictest0-21swapper/1707:50:049
13624998217,39cyclictest0-21swapper/1707:50:049
13683998156,23cyclictest8773-21timerandwakeup08:45:2521
1368399810,80cyclictest0-21swapper/2812:00:0121
1368399810,80cyclictest0-21swapper/2811:40:1021
1368399810,80cyclictest0-21swapper/2811:37:4621
1368399810,79cyclictest5220-21latency_hist10:30:0121
13658998114,39cyclictest0-21swapper/2407:15:2017
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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