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2026-04-06 - 04:40
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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 Mon Apr 06, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1297721640,5sleep22378899cyclictest23:25:142
72632800,6sleep00-21swapper/022:00:300
6402700,5sleep20-21swapper/220:40:002
134491620,4ptp4l10662-21taskset00:28:530
134491610,5ptp4l0-21swapper/121:30:151
36812590,3sleep32378999cyclictest23:05:123
134491590,5ptp4l27595-21memory21:35:210
134491590,3ptp4l23397-21ps22:35:231
134491580,3ptp4l4455-21memory21:55:191
134491580,3ptp4l0-21swapper/119:30:241
134491580,3ptp4l0-21swapper/000:00:180
134491570,3ptp4l0-21swapper/120:20:251
134491560,4ptp4l0-21swapper/100:09:161
134491560,3ptp4l0-21swapper/121:45:281
134491560,3ptp4l0-21swapper/121:45:281
134491560,3ptp4l0-21swapper/020:35:190
134491550,5ptp4l24087-21df_abs19:10:140
134491550,3ptp4l0-21swapper/323:34:303
134491550,16ptp4l0-21swapper/119:05:151
134491540,3ptp4l0-21swapper/120:00:181
134491530,4ptp4l0-21swapper/120:39:551
134491530,4ptp4l0-21swapper/023:47:380
134491530,3ptp4l0-21swapper/100:00:591
134491520,4ptp4l0-21swapper/019:05:260
134491510,4ptp4l0-21swapper/122:03:121
134491510,4ptp4l0-21swapper/121:35:251
134491510,4ptp4l0-21swapper/019:36:080
134491510,21ptp4l25-21ksoftirqd/122:45:561
134491510,21ptp4l25-21ksoftirqd/122:45:561
134491500,4ptp4l0-21swapper/200:35:342
134491500,4ptp4l0-21swapper/119:41:271
134491500,4ptp4l0-21swapper/022:50:330
134491500,4ptp4l0-21swapper/021:43:170
134491500,4ptp4l0-21swapper/020:25:030
134491500,3ptp4l0-21swapper/222:21:332
134491500,3ptp4l0-21swapper/122:25:191
134491500,3ptp4l0-21swapper/122:13:231
134491500,18ptp4l0-21swapper/221:22:402
134491490,4ptp4l0-21swapper/123:09:211
134491490,4ptp4l0-21swapper/122:30:331
134491490,4ptp4l0-21swapper/122:20:021
134491490,4ptp4l0-21swapper/119:54:561
134491490,4ptp4l0-21swapper/119:19:121
134491490,4ptp4l0-21swapper/023:05:210
134491490,4ptp4l0-21swapper/022:08:190
134491490,3ptp4l0-21swapper/020:46:420
134491490,17ptp4l0-21swapper/322:26:583
134491490,11ptp4l0-21swapper/021:24:570
23789994833,6cyclictest41-21ksoftirqd/322:46:213
23789994833,6cyclictest41-21ksoftirqd/322:46:213
134491480,4ptp4l401ktimersoftd/319:40:153
134491480,4ptp4l0-21swapper/323:57:123
134491480,4ptp4l0-21swapper/320:29:063
134491480,4ptp4l0-21swapper/220:28:202
134491480,4ptp4l0-21swapper/120:49:021
134491480,4ptp4l0-21swapper/023:34:530
134491480,4ptp4l0-21swapper/021:31:310
134491480,4ptp4l0-21swapper/021:07:120
134491480,4ptp4l0-21swapper/020:56:370
134491480,4ptp4l0-21swapper/020:56:370
134491480,4ptp4l0-21swapper/020:18:040
134491480,4ptp4l0-21swapper/019:33:320
134491480,4ptp4l0-21swapper/000:38:120
134491480,3ptp4l0-21swapper/022:24:020
134491470,5ptp4l391rcuc/323:25:263
134491470,4ptp4l0-21swapper/119:25:391
134491470,4ptp4l0-21swapper/100:34:221
134491470,4ptp4l0-21swapper/100:17:021
134491470,4ptp4l0-21swapper/022:14:410
134491470,4ptp4l0-21swapper/021:27:380
134491470,4ptp4l0-21swapper/019:22:340
134491470,3ptp4l0-21swapper/320:54:123
134491470,3ptp4l0-21swapper/023:50:390
134491470,3ptp4l0-21swapper/023:01:190
134491470,11ptp4l0-21swapper/021:15:240
134491460,4ptp4l0-21swapper/323:17:103
134491460,4ptp4l0-21swapper/323:17:103
134491460,4ptp4l0-21swapper/121:12:101
134491460,4ptp4l0-21swapper/120:07:271
134491460,4ptp4l0-21swapper/119:20:051
134491460,4ptp4l0-21swapper/023:42:220
134491460,4ptp4l0-21swapper/021:14:580
134491460,3ptp4l121rcu_preempt00:20:521
134491460,3ptp4l0-21swapper/122:58:361
134491460,3ptp4l0-21swapper/023:25:260
134491460,3ptp4l0-21swapper/021:45:490
134491460,3ptp4l0-21swapper/021:45:490
134491460,3ptp4l0-21swapper/000:24:560
23786994514,4cyclictest9-21ksoftirqd/022:28:070
134491450,4ptp4l0-21swapper/119:57:011
134491450,4ptp4l0-21swapper/021:55:470
134491450,4ptp4l0-21swapper/021:52:350
134491450,4ptp4l0-21swapper/019:17:540
134491450,3ptp4l0-21swapper/022:57:210
2378699449,6cyclictest9-21ksoftirqd/023:20:200
23786994411,4cyclictest9-21ksoftirqd/020:00:210
134491440,5ptp4l4090-21apt-get00:15:122
134491440,4ptp4l0-21swapper/120:26:061
134491440,4ptp4l0-21swapper/022:40:310
134491440,3ptp4l0-21swapper/321:28:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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