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2026-05-08 - 08:10
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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 Fri May 08, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2451399702,32cyclictest0-21swapper/321:05:153
196902680,8sleep22451299cyclictest23:35:182
24513996425,4cyclictest41-21ksoftirqd/319:10:213
24513996332,3cyclictest41-21ksoftirqd/300:05:133
134491630,5ptp4l25597-21/usr/sbin/munin19:10:220
134491630,4ptp4l3371-21apt-get00:10:112
24513996233,7cyclictest41-21ksoftirqd/321:42:063
24513996233,7cyclictest41-21ksoftirqd/321:42:063
24513996128,4cyclictest41-21ksoftirqd/300:30:013
134491610,4ptp4l0-21swapper/023:50:110
24513996031,4cyclictest41-21ksoftirqd/322:55:253
24513996030,9cyclictest41-21ksoftirqd/320:10:183
235172600,6sleep20-21swapper/219:05:232
134491600,4ptp4l0-21swapper/119:25:151
24513995932,9cyclictest41-21ksoftirqd/321:25:003
24513995929,7cyclictest41-21ksoftirqd/321:35:263
24513995927,8cyclictest41-21ksoftirqd/322:50:153
134491590,4ptp4l13526-21meminfo00:30:202
134491590,4ptp4l0-21swapper/119:05:201
24513995826,4cyclictest41-21ksoftirqd/320:20:263
24513995822,6cyclictest41-21ksoftirqd/319:55:183
24513995822,4cyclictest41-21ksoftirqd/319:15:193
24513995821,4cyclictest41-21ksoftirqd/323:20:173
134491580,4ptp4l0-21swapper/321:15:183
134491580,4ptp4l0-21swapper/221:20:192
134491580,3ptp4l0-21swapper/320:37:323
24513995727,8cyclictest41-21ksoftirqd/300:10:163
134491570,15ptp4l0-21swapper/021:36:380
24513995623,7cyclictest41-21ksoftirqd/323:45:143
24513995619,4cyclictest41-21ksoftirqd/323:14:403
134491560,4ptp4l29055-21hwlatdetect23:55:181
134491560,4ptp4l0-21swapper/220:46:552
2451399555,9cyclictest41-21ksoftirqd/320:15:293
2451399552,6cyclictest41-21ksoftirqd/323:50:113
24513995522,6cyclictest41-21ksoftirqd/321:30:253
134491550,4ptp4l0-21swapper/121:14:291
134491550,4ptp4l0-21swapper/121:14:291
2451399544,8cyclictest41-21ksoftirqd/300:00:233
2451399542,6cyclictest0-21swapper/320:50:293
134491540,3ptp4l0-21swapper/122:56:551
2451399533,8cyclictest41-21ksoftirqd/319:35:003
2451399532,5cyclictest19961-21sed22:25:163
24513995324,6cyclictest41-21ksoftirqd/300:25:243
24513995322,8cyclictest41-21ksoftirqd/319:30:003
134491530,3ptp4l0-21swapper/122:35:351
2451399525,7cyclictest41-21ksoftirqd/300:20:183
2451399524,9cyclictest41-21ksoftirqd/322:30:303
2451399522,7cyclictest0-21swapper/320:25:103
24513995218,6cyclictest41-21ksoftirqd/300:00:003
2451399521,6cyclictest0-21swapper/320:45:003
2451399521,10cyclictest0-21swapper/321:54:193
2451399520,7cyclictest401ktimersoftd/321:00:003
134491520,3ptp4l0-21swapper/219:14:142
134491520,3ptp4l0-21swapper/121:31:401
134491520,3ptp4l0-21swapper/019:54:230
134491520,11ptp4l0-21swapper/122:28:371
2451399515,7cyclictest41-21ksoftirqd/322:05:153
2451399513,7cyclictest41-21ksoftirqd/323:30:193
2451399513,6cyclictest41-21ksoftirqd/322:10:293
2451399513,6cyclictest41-21ksoftirqd/322:10:293
2451399512,9cyclictest0-21swapper/320:07:103
24513995117,7cyclictest41-21ksoftirqd/322:40:153
2451399510,5cyclictest401ktimersoftd/320:45:283
2451399510,12cyclictest41-21ksoftirqd/323:40:173
134491510,12ptp4l0-21swapper/019:24:440
2451399504,7cyclictest41-21ksoftirqd/323:10:003
2451399504,6cyclictest0-21swapper/321:10:173
2451399504,6cyclictest0-21swapper/321:10:173
2451399503,6cyclictest41-21ksoftirqd/322:45:133
2451399502,7cyclictest0-21swapper/322:00:243
2451399502,7cyclictest0-21swapper/319:40:143
24513995020,7cyclictest41-21ksoftirqd/321:01:583
2451399500,7cyclictest41-21ksoftirqd/300:35:213
134491500,4ptp4l0-21swapper/222:43:042
134491500,4ptp4l0-21swapper/220:21:552
134491500,4ptp4l0-21swapper/121:59:071
134491500,4ptp4l0-21swapper/121:21:481
134491500,3ptp4l0-21swapper/020:49:290
134491500,3ptp4l0-21swapper/000:25:230
2451399493,8cyclictest41-21ksoftirqd/321:55:193
2451399493,7cyclictest0-21swapper/322:15:003
2451399492,7cyclictest0-21swapper/323:15:133
2451399492,6cyclictest41-21ksoftirqd/319:35:133
2451399492,6cyclictest0-21swapper/323:00:253
2451399490,6cyclictest41-21ksoftirqd/319:45:253
134491490,4ptp4l0-21swapper/321:49:163
134491490,4ptp4l0-21swapper/122:06:191
134491490,4ptp4l0-21swapper/000:07:370
134491490,4ptp4l0-21swapper/000:02:460
134491490,3ptp4l0-21swapper/019:31:220
2451399484,7cyclictest41-21ksoftirqd/322:20:143
2451399484,4cyclictest41-21ksoftirqd/320:30:253
2451399483,7cyclictest41-21ksoftirqd/320:00:263
2451399483,7cyclictest41-21ksoftirqd/319:20:143
2451399482,6cyclictest41-21ksoftirqd/319:50:153
2451399482,5cyclictest41-21ksoftirqd/321:22:263
134491480,4ptp4l0-21swapper/223:02:082
134491480,4ptp4l0-21swapper/123:04:391
134491480,3ptp4l0-21swapper/219:18:132
134491480,3ptp4l0-21swapper/020:16:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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