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2026-07-18 - 12:59
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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 Jul 18, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491790,4ptp4l0-21swapper/222:35:172
29376997316,12cyclictest9315-21chrt23:03:303
29376997116,12cyclictest20885-21chrt23:28:323
29376997114,11cyclictest29947-21chrt22:36:053
29376996916,12cyclictest18512-21chrt23:22:343
29376996915,12cyclictest6300-21taskset20:38:593
29376996914,11cyclictest29993-21taskset23:47:103
29376996914,11cyclictest16399-21taskset00:26:033
29376996912,15cyclictest7463-21irqrtprio20:40:203
134491690,6ptp4l0-21swapper/219:09:292
29376996815,11cyclictest8815-21taskset21:51:573
29376996814,11cyclictest3662-21chrt19:24:133
29376996813,11cyclictest25511-21chrt22:28:073
29376996813,10cyclictest1317-21runrttasks22:09:193
29376996811,11cyclictest18174-21cron21:05:003
29376996714,11cyclictest32429-21chrt23:54:003
29376996714,10cyclictest2493-21taskset22:49:373
29376996713,11cyclictest15131-21taskset19:48:483
29376996614,12cyclictest4722-21taskset00:04:153
29376996614,11cyclictest20850-21chrt22:17:323
29376996612,11cyclictest2218-21taskset23:57:363
134491660,4ptp4l0-21swapper/023:20:270
29376996515,12cyclictest31640-21chrt21:30:463
29376996515,12cyclictest14108-21taskset00:21:113
29376996515,11cyclictest11348-21chrt21:59:593
29376996514,11cyclictest11861-21chrt00:19:483
29376996514,10cyclictest23241-21chrt23:34:183
29376996511,4cyclictest134491ptp4l22:57:013
29376996414,12cyclictest29454-21taskset21:27:053
29376996414,11cyclictest24776-21taskset21:16:303
29376996413,10cyclictest13541-21taskset22:00:433
134491630,4ptp4l0-21swapper/020:45:180
29376996216,11cyclictest4287-21chrt21:42:463
29376996216,10cyclictest21067-21chrt00:37:053
29376996214,11cyclictest29006-21chrt20:16:253
134491620,4ptp4l0-21swapper/222:19:362
29376996115,11cyclictest21291-21chrt22:20:053
134491590,4ptp4l0-21swapper/023:10:260
29376995810,11cyclictest11971-21/usr/sbin/munin23:10:183
134491580,4ptp4l0-21swapper/022:44:310
59132570,4sleep10-21swapper/120:35:281
2937699579,6cyclictest134491ptp4l20:05:023
29376995716,11cyclictest17372-21taskset19:52:253
134491570,3ptp4l0-21swapper/219:44:472
29376995616,11cyclictest10931-21taskset20:49:133
29376995613,6cyclictest134491ptp4l20:23:563
29376995611,42cyclictest14897-21sed23:15:173
29373995618,4cyclictest9-21ksoftirqd/019:55:200
134491560,3ptp4l0-21swapper/223:50:262
134491560,3ptp4l0-21swapper/222:25:242
29376995516,11cyclictest13195-21taskset20:53:473
29376995515,12cyclictest27780-21taskset22:32:473
29376995513,9cyclictest5721-21chrt19:26:143
29376995512,12cyclictest3731-21taskset22:50:213
29376995512,12cyclictest3731-21taskset22:50:213
134491550,4ptp4l0-21swapper/123:00:591
134491550,4ptp4l0-21swapper/023:45:190
134491550,4ptp4l0-21swapper/021:44:080
134491550,3ptp4l0-21swapper/222:51:062
134491550,3ptp4l0-21swapper/222:51:062
134491550,3ptp4l0-21swapper/020:26:010
29376995417,11cyclictest25252-21taskset23:35:413
29376995416,13cyclictest3764-21taskset20:31:003
29376995413,9cyclictest8201-21taskset19:33:333
29376995411,9cyclictest21815-21ntpq21:10:223
134491540,4ptp4l0-21swapper/319:08:513
134491540,4ptp4l0-21swapper/223:15:152
134491540,4ptp4l0-21swapper/222:09:252
134491540,4ptp4l0-21swapper/020:06:110
134491540,3ptp4l17830-21apt-get19:55:132
134491540,3ptp4l0-21swapper/122:58:181
29376995315,11cyclictest9393-21taskset00:12:483
29376995313,9cyclictest24554-21taskset20:08:103
134491530,4ptp4l0-21swapper/220:50:112
134491530,4ptp4l0-21swapper/220:35:162
134491530,3ptp4l0-21swapper/222:02:472
134491530,3ptp4l0-21swapper/220:25:042
134491530,13ptp4l0-21swapper/219:45:172
29376995214,10cyclictest26888-21taskset20:13:393
134491520,4ptp4l0-21swapper/219:32:282
134491520,4ptp4l0-21swapper/219:30:002
134491520,4ptp4l0-21swapper/219:10:382
134491520,4ptp4l0-21swapper/200:33:462
134491520,4ptp4l0-21swapper/200:26:532
134491520,3ptp4l0-21swapper/220:56:332
134491520,3ptp4l0-21swapper/200:23:522
29376995116,9cyclictest27909-21taskset23:44:593
29376995116,12cyclictest18231-21taskset22:11:173
29376995115,10cyclictest995-21taskset19:15:533
134491510,4ptp4l0-21swapper/221:33:272
134491510,4ptp4l0-21swapper/122:30:091
134491510,3ptp4l0-21swapper/220:23:352
134491500,5ptp4l0-21swapper/219:51:292
134491500,4ptp4l0-21swapper/223:25:432
134491500,4ptp4l0-21swapper/223:24:242
134491500,4ptp4l0-21swapper/222:57:202
134491500,4ptp4l0-21swapper/220:02:352
134491500,4ptp4l0-21swapper/200:35:282
134491500,4ptp4l0-21swapper/123:57:531
29376994917,11cyclictest7174-21seq00:08:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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