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2026-06-30 - 16:37
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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
Characteristics of the 100 highest latencies:
System rackdslot1.osadl.org (updated Tue Jun 30, 2026 12:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2064521340,3sleep20-21swapper/211:00:212
966099643,17cyclictest0-21swapper/312:20:253
966099632,16cyclictest0-21swapper/311:40:173
966099623,17cyclictest0-21swapper/310:20:013
194262620,7sleep1965899cyclictest11:00:001
134491620,4ptp4l10073-21apt-get08:20:131
966099617,11cyclictest0-21swapper/310:55:013
134491610,4ptp4l0-21swapper/007:25:230
134491600,4ptp4l32192-21meminfo10:15:210
134491600,4ptp4l10258-21iostat_ios07:10:171
134491600,3ptp4l0-21swapper/007:20:190
966099592,15cyclictest0-21swapper/309:50:253
134491590,4ptp4l0-21swapper/108:15:201
134491580,3ptp4l11912-21unixbench_singl09:30:273
9660995711,15cyclictest24415-21if_enp1s008:50:173
966099560,15cyclictest21311-21sed11:00:293
9659995620,5cyclictest33-21ksoftirqd/211:17:542
134491560,3ptp4l0-21swapper/008:35:400
134491550,4ptp4l0-21swapper/207:32:082
134491550,4ptp4l0-21swapper/108:57:241
134491550,3ptp4l0-21swapper/212:15:222
134491550,3ptp4l0-21swapper/108:43:431
966099540,9cyclictest23461-21latency_hist07:40:013
966099540,12cyclictest21542-21latency_hist08:45:003
299162540,3sleep20-21swapper/210:10:222
134491540,4ptp4l0-21swapper/208:45:132
134491540,4ptp4l0-21swapper/109:21:221
134491540,4ptp4l0-21swapper/008:23:420
134491540,4ptp4l0-21swapper/007:54:120
134491540,3ptp4l0-21swapper/312:15:273
134491540,3ptp4l0-21swapper/107:30:501
966099533,47cyclictest0-21swapper/311:50:133
966099533,10cyclictest0-21swapper/308:05:013
966099530,9cyclictest5057-21cut11:35:233
966099530,11cyclictest16080-21chrt07:20:573
966099530,11cyclictest15747-21irqrtprio09:40:193
134491530,4ptp4l0-21swapper/209:10:502
966099522,10cyclictest0-21swapper/308:20:263
966099520,16cyclictest2857-21cat11:30:283
966099520,12cyclictest1417-21cut09:10:193
966099520,11cyclictest31254-21chrt12:31:403
134491520,4ptp4l0-21swapper/210:37:452
134491520,4ptp4l0-21swapper/210:37:452
134491520,4ptp4l0-21swapper/209:28:192
134491520,4ptp4l0-21swapper/108:04:391
134491520,4ptp4l0-21swapper/107:54:131
134491520,4ptp4l0-21swapper/011:18:120
134491520,3ptp4l0-21swapper/010:58:350
134491520,3ptp4l0-21swapper/008:40:580
134491520,3ptp4l0-21swapper/008:10:190
966099513,9cyclictest0-21swapper/312:40:013
966099512,10cyclictest0-21swapper/308:55:273
966099510,19cyclictest6904-21sed09:20:263
966099510,11cyclictest16596-21taskset08:32:583
9659995120,4cyclictest33-21ksoftirqd/207:45:002
134491510,4ptp4l0-21swapper/209:59:252
134491510,4ptp4l0-21swapper/110:45:281
134491510,4ptp4l0-21swapper/108:13:071
134491510,4ptp4l0-21swapper/009:55:560
134491510,3ptp4l0-21swapper/109:25:071
134491510,3ptp4l0-21swapper/011:12:370
966099501,12cyclictest25352-21chrt07:41:483
966099500,16cyclictest5673-21df_abs08:10:123
9659995016,12cyclictest33-21ksoftirqd/208:22:202
134491500,4ptp4l965999cyclictest12:11:332
134491500,4ptp4l0-21swapper/209:42:202
134491500,4ptp4l0-21swapper/111:22:261
134491500,4ptp4l0-21swapper/009:04:010
134491500,3ptp4l0-21swapper/211:22:352
134491500,3ptp4l0-21swapper/210:27:252
134491500,3ptp4l0-21swapper/207:35:002
134491500,3ptp4l0-21swapper/109:05:111
134491500,3ptp4l0-21swapper/009:30:200
966099491,12cyclictest13488-21cat09:35:203
966099490,11cyclictest9437-21taskset08:15:343
966099490,11cyclictest14129-21irqrtprio11:55:193
9659994918,14cyclictest33-21ksoftirqd/210:44:292
134491490,5ptp4l0-21swapper/107:06:471
134491490,4ptp4l0-21swapper/212:05:052
134491490,4ptp4l0-21swapper/008:15:040
134491490,3ptp4l0-21swapper/007:05:170
134491490,14ptp4l19837-21diskstats09:50:152
134491490,12ptp4l0-21swapper/210:04:072
966099486,6cyclictest137891phc2sys07:33:453
966099482,16cyclictest0-21swapper/312:10:223
966099480,12cyclictest25705-21ps11:10:253
9659994836,10cyclictest33-21ksoftirqd/212:30:182
134491480,4ptp4l0-21swapper/207:15:442
134491480,4ptp4l0-21swapper/107:29:291
134491480,3ptp4l0-21swapper/211:29:302
134491480,3ptp4l0-21swapper/210:06:502
134491480,3ptp4l0-21swapper/011:49:160
134491480,3ptp4l0-21swapper/008:00:560
134491480,11ptp4l0-21swapper/211:35:492
966099470,10cyclictest32565-21taskset07:58:173
134491470,4ptp4l0-21swapper/108:46:361
134491470,4ptp4l0-21swapper/011:00:250
966099465,11cyclictest0-21swapper/310:20:323
966099465,11cyclictest0-21swapper/308:36:373
966099463,10cyclictest0-21swapper/310:55:283
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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