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2026-08-08 - 04:50
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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 Sat Aug 08, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1358621570,3sleep2202799cyclictest23:00:182
2028996633,4cyclictest41-21ksoftirqd/323:25:223
151782660,6sleep2202799cyclictest19:35:282
134491660,3ptp4l6204-21irqstats21:35:201
81782610,3sleep341-21ksoftirqd/322:50:123
202599610,3cyclictest134491ptp4l22:45:010
54062600,5sleep20-21swapper/221:35:142
202899606,18cyclictest0-21swapper/323:15:233
2028995922,8cyclictest41-21ksoftirqd/320:55:233
134491590,4ptp4l0-21swapper/222:53:022
134491590,4ptp4l0-21swapper/121:05:261
134491580,4ptp4l0-21swapper/321:34:563
134491580,4ptp4l0-21swapper/219:06:492
134491580,4ptp4l0-21swapper/123:24:361
134491570,4ptp4l0-21swapper/121:22:361
134491570,4ptp4l0-21swapper/021:11:350
134491570,4ptp4l0-21swapper/000:16:280
134491570,3ptp4l0-21swapper/120:40:261
134491570,3ptp4l0-21swapper/119:16:301
134491560,4ptp4l0-21swapper/122:46:281
134491560,4ptp4l0-21swapper/100:05:121
134491560,4ptp4l0-21swapper/021:53:100
134491560,3ptp4l0-21swapper/020:16:260
202899555,11cyclictest0-21swapper/322:30:203
2025995531,21cyclictest9-21ksoftirqd/021:40:110
2025995531,21cyclictest9-21ksoftirqd/021:40:110
134491550,5ptp4l1498-21taskset19:07:073
134491550,4ptp4l0-21swapper/222:32:182
134491550,4ptp4l0-21swapper/221:42:372
134491550,4ptp4l0-21swapper/221:42:372
134491550,4ptp4l0-21swapper/123:36:001
134491550,27ptp4l23720-21/usr/sbin/munin19:55:191
202899543,11cyclictest0-21swapper/300:35:203
202899542,7cyclictest0-21swapper/320:45:173
202899542,6cyclictest0-21swapper/323:50:203
134491540,4ptp4l0-21swapper/123:49:241
134491540,4ptp4l0-21swapper/122:28:281
134491540,4ptp4l0-21swapper/121:50:361
134491540,4ptp4l0-21swapper/100:32:121
134491540,4ptp4l0-21swapper/022:56:280
134491540,3ptp4l0-21swapper/119:42:031
134491540,3ptp4l0-21swapper/021:18:480
134491540,10ptp4l0-21swapper/223:45:222
202899533,11cyclictest0-21swapper/320:40:193
2028995327,8cyclictest41-21ksoftirqd/322:40:263
134491530,4ptp4l0-21swapper/200:19:332
134491530,4ptp4l0-21swapper/119:54:151
134491530,4ptp4l0-21swapper/119:20:351
202899523,7cyclictest0-21swapper/321:59:163
202899523,12cyclictest0-21swapper/321:35:173
202899522,6cyclictest41-21ksoftirqd/323:30:253
202899522,12cyclictest0-21swapper/319:20:173
134491520,4ptp4l0-21swapper/120:30:471
134491520,4ptp4l0-21swapper/120:25:131
202899514,11cyclictest0-21swapper/321:05:223
202899513,10cyclictest0-21swapper/300:30:273
202899512,9cyclictest0-21swapper/320:27:583
202899512,7cyclictest0-21swapper/320:21:593
202899512,6cyclictest0-21swapper/320:30:233
202899512,5cyclictest3689-21latency_hist23:50:003
134491510,4ptp4l0-21swapper/123:53:111
134491510,4ptp4l0-21swapper/120:38:041
134491510,4ptp4l0-21swapper/120:15:151
134491510,2ptp4l0-21swapper/221:53:162
134491510,2ptp4l0-21swapper/120:47:331
202899503,6cyclictest0-21swapper/322:20:243
202899503,6cyclictest0-21swapper/322:20:243
202899503,11cyclictest0-21swapper/319:25:173
202899502,7cyclictest0-21swapper/300:03:523
202899502,6cyclictest0-21swapper/322:05:243
202899502,6cyclictest0-21swapper/319:50:083
202899502,10cyclictest0-21swapper/323:55:263
202899501,6cyclictest0-21swapper/321:20:173
202899500,7cyclictest137891phc2sys22:45:223
2027995037,11cyclictest33-21ksoftirqd/219:45:012
134491500,3ptp4l0-21swapper/100:15:261
2028994946,2cyclictest391rcuc/323:05:283
202899493,7cyclictest0-21swapper/300:10:203
202899492,6cyclictest0-21swapper/322:15:283
202899492,12cyclictest0-21swapper/319:55:173
202899492,10cyclictest0-21swapper/320:15:143
134491490,4ptp4l0-21swapper/200:29:532
134491490,4ptp4l0-21swapper/119:27:131
134491490,3ptp4l0-21swapper/222:04:372
202899488,11cyclictest0-21swapper/321:45:273
202899488,11cyclictest0-21swapper/321:45:273
202899485,6cyclictest0-21swapper/319:17:373
202899484,8cyclictest41-21ksoftirqd/300:18:253
202899484,11cyclictest0-21swapper/322:10:043
202899482,6cyclictest0-21swapper/319:13:223
202899481,5cyclictest41-21ksoftirqd/320:50:153
202899481,15cyclictest766-21gdbus22:00:253
134491480,4ptp4l0-21swapper/121:01:011
134491480,4ptp4l0-21swapper/100:27:161
134491480,10ptp4l0-21swapper/221:30:202
202899474,6cyclictest134691getstats00:20:273
202899472,5cyclictest41-21ksoftirqd/320:05:213
202899472,11cyclictest0-21swapper/300:05:183
202899470,6cyclictest29206-21/usr/sbin/munin23:35:173
134491470,5ptp4l27467-21ls21:10:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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