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2026-03-12 - 05:06
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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 Thu Mar 12, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1048521730,6sleep11575499cyclictest23:35:191
3252021360,5sleep31575699cyclictest00:20:223
153242830,6sleep30-21swapper/320:15:303
15753996429,9cyclictest9-21ksoftirqd/020:25:190
134491630,9ptp4l0-21swapper/022:20:220
134491600,5ptp4l0-21swapper/300:10:163
134491600,4ptp4l0-21swapper/222:15:432
134491600,4ptp4l0-21swapper/100:01:581
15753995925,3cyclictest9-21ksoftirqd/023:57:300
1575399584,8cyclictest2663-21awk23:20:000
15753995827,3cyclictest9-21ksoftirqd/000:39:180
134491580,4ptp4l0-21swapper/321:49:103
134491580,3ptp4l0-21swapper/121:54:221
66052570,5sleep36610-21timerandwakeup23:25:263
1575399577,4cyclictest15736-21mailstats22:35:240
15753995724,5cyclictest9-21ksoftirqd/021:50:140
15753995721,4cyclictest9-21ksoftirqd/019:55:000
134491570,4ptp4l0-21swapper/121:47:171
134491570,3ptp4l0-21swapper/222:53:212
134491570,3ptp4l0-21swapper/121:17:321
15753995624,3cyclictest9-21ksoftirqd/022:53:350
15753995620,7cyclictest9-21ksoftirqd/019:25:140
134491560,3ptp4l0-21swapper/022:30:120
134491560,3ptp4l0-21swapper/019:50:170
1575399553,5cyclictest0-21swapper/019:25:000
15753995524,2cyclictest9-21ksoftirqd/000:06:210
15753995521,5cyclictest9-21ksoftirqd/021:36:030
134491550,4ptp4l32392-21fschecks_time19:45:171
134491550,4ptp4l32392-21fschecks_time19:45:171
15753995423,4cyclictest9-21ksoftirqd/000:25:230
15753995422,2cyclictest9-21ksoftirqd/020:50:500
1575399541,9cyclictest9-21ksoftirqd/020:55:230
134491540,4ptp4l0-21swapper/120:05:421
1575399535,8cyclictest4466-21sed23:20:260
1575399532,6cyclictest11842-21awk23:40:010
15753995326,3cyclictest9-21ksoftirqd/023:13:360
15753995325,6cyclictest9-21ksoftirqd/023:45:200
1575399530,13cyclictest9-21ksoftirqd/020:35:240
134491530,10ptp4l13428-21apt-get19:05:111
1575399525,5cyclictest9-21ksoftirqd/022:25:290
1575399524,7cyclictest9-21ksoftirqd/020:40:210
1575399523,8cyclictest9-21ksoftirqd/021:15:260
15753995224,5cyclictest9-21ksoftirqd/019:19:200
1575399522,3cyclictest0-21swapper/020:45:190
1575399522,10cyclictest9-21ksoftirqd/021:50:000
134491520,4ptp4l0-21swapper/321:41:033
134491520,4ptp4l0-21swapper/123:04:041
134491520,4ptp4l0-21swapper/121:38:251
134491520,3ptp4l0-21swapper/123:26:181
134491520,11ptp4l0-21swapper/100:21:241
1575399515,5cyclictest9-21ksoftirqd/021:45:000
1575399514,6cyclictest9-21ksoftirqd/023:30:000
1575399513,6cyclictest9-21ksoftirqd/021:00:240
1575399512,7cyclictest9-21ksoftirqd/019:30:120
1575399511,6cyclictest9-21ksoftirqd/022:45:220
134491510,4ptp4l0-21swapper/122:52:351
134491510,4ptp4l0-21swapper/122:42:191
134491510,4ptp4l0-21swapper/119:20:081
134491510,4ptp4l0-21swapper/022:15:000
1575399504,8cyclictest9-21ksoftirqd/021:25:010
1575399502,9cyclictest5257-21sed21:05:180
15753995016,6cyclictest9-21ksoftirqd/020:34:210
134491500,4ptp4l0-21swapper/320:22:183
134491500,4ptp4l0-21swapper/220:36:252
134491500,4ptp4l0-21swapper/122:19:011
134491500,4ptp4l0-21swapper/119:39:161
134491500,4ptp4l0-21swapper/119:26:511
134491500,11ptp4l0-21swapper/121:24:411
1575399493,6cyclictest9-21ksoftirqd/023:50:240
1575399492,5cyclictest18242-21turbostat20:24:590
1575399492,3cyclictest9-21ksoftirqd/022:55:120
15753994922,3cyclictest9-21ksoftirqd/019:11:270
1575399491,6cyclictest9-21ksoftirqd/020:15:230
1575399490,9cyclictest9-21ksoftirqd/000:05:000
134491490,4ptp4l0-21swapper/123:42:151
134491490,4ptp4l0-21swapper/123:31:341
134491490,4ptp4l0-21swapper/123:10:401
134491490,4ptp4l0-21swapper/122:36:031
134491490,4ptp4l0-21swapper/121:11:051
134491490,4ptp4l0-21swapper/120:10:531
134491490,4ptp4l0-21swapper/019:05:540
134491490,3ptp4l0-21swapper/300:27:593
1575699484,3cyclictest41-21ksoftirqd/300:05:173
1575399485,5cyclictest9-21ksoftirqd/021:30:000
1575399484,9cyclictest9-21ksoftirqd/000:20:170
1575399484,4cyclictest9-21ksoftirqd/020:00:280
1575399483,9cyclictest9-21ksoftirqd/019:35:100
15753994830,3cyclictest9-21ksoftirqd/023:03:360
1575399482,5cyclictest32332-21fschecks_count19:45:160
1575399482,5cyclictest32332-21fschecks_count19:45:160
1575399480,6cyclictest101ktimersoftd/000:10:150
1575399480,5cyclictest9-21ksoftirqd/000:16:590
134491480,4ptp4l0-21swapper/123:56:521
134491480,4ptp4l0-21swapper/122:49:571
134491480,4ptp4l0-21swapper/100:05:521
134491480,4ptp4l0-21swapper/023:34:140
134491480,4ptp4l0-21swapper/022:08:520
134491480,3ptp4l0-21swapper/122:31:501
134491480,3ptp4l0-21swapper/120:38:591
1575399474,2cyclictest0-21swapper/021:55:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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