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2025-11-06 - 16:13
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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 Nov 06, 2025 12:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
307221490,6sleep01571699cyclictest09:00:180
2847191660,5ptp4l0-21swapper/310:10:203
28632650,4sleep12855-21sendmail-msp11:20:001
2847191610,3ptp4l0-21swapper/110:50:041
15718996127,9cyclictest33-21ksoftirqd/210:26:272
2847191600,4ptp4l0-21swapper/109:15:131
2847191600,4ptp4l0-21swapper/010:50:040
2847191590,4ptp4l0-21swapper/107:05:281
15716995923,7cyclictest9-21ksoftirqd/012:00:250
2847191580,3ptp4l0-21swapper/012:05:450
2847191580,3ptp4l0-21swapper/009:40:540
2847191580,3ptp4l0-21swapper/007:10:360
15716995822,6cyclictest9-21ksoftirqd/009:15:260
98202570,4sleep09-21ksoftirqd/011:35:010
2847191570,4ptp4l0-21swapper/310:35:283
2847191560,3ptp4l0-21swapper/210:39:542
15718995629,7cyclictest33-21ksoftirqd/208:25:002
15718995624,4cyclictest33-21ksoftirqd/210:19:052
2847191550,3ptp4l0-21swapper/311:26:443
2847191540,5ptp4l0-21swapper/110:36:451
2847191540,4ptp4l0-21swapper/211:36:522
2847191540,4ptp4l0-21swapper/211:36:512
15718995428,7cyclictest33-21ksoftirqd/210:55:192
15718995424,4cyclictest33-21ksoftirqd/210:34:182
15718995424,3cyclictest33-21ksoftirqd/207:45:322
15718995421,4cyclictest33-21ksoftirqd/211:32:272
15718995421,4cyclictest33-21ksoftirqd/211:14:172
15718995421,4cyclictest33-21ksoftirqd/209:44:102
1571699545,8cyclictest9-21ksoftirqd/012:15:000
2847191530,4ptp4l0-21swapper/212:04:312
2847191530,4ptp4l0-21swapper/209:05:452
15718995327,3cyclictest33-21ksoftirqd/208:36:302
15718995323,4cyclictest33-21ksoftirqd/212:27:432
15718995323,4cyclictest33-21ksoftirqd/211:25:402
15718995322,6cyclictest33-21ksoftirqd/209:15:152
15718995322,5cyclictest33-21ksoftirqd/209:01:092
2847191520,4ptp4l0-21swapper/210:21:342
2847191520,4ptp4l0-21swapper/008:49:140
2847191520,4ptp4l0-21swapper/007:40:590
2847191520,3ptp4l0-21swapper/309:36:203
2847191520,3ptp4l0-21swapper/211:40:392
2847191520,2ptp4l0-21swapper/107:38:231
15718995223,6cyclictest33-21ksoftirqd/208:10:202
15718995223,4cyclictest33-21ksoftirqd/210:02:032
15718995222,4cyclictest33-21ksoftirqd/212:39:062
15718995222,4cyclictest33-21ksoftirqd/211:15:092
2847191510,4ptp4l0-21swapper/311:48:043
2847191510,4ptp4l0-21swapper/210:07:582
2847191510,4ptp4l0-21swapper/108:24:521
15718995127,12cyclictest33-21ksoftirqd/211:58:232
15718995126,3cyclictest33-21ksoftirqd/207:42:552
15718995124,8cyclictest33-21ksoftirqd/207:27:192
15718995123,8cyclictest33-21ksoftirqd/212:09:402
15718995123,3cyclictest33-21ksoftirqd/208:33:532
15718995123,3cyclictest33-21ksoftirqd/208:33:532
15718995121,5cyclictest33-21ksoftirqd/212:17:322
15718995121,4cyclictest33-21ksoftirqd/209:27:182
15718995121,3cyclictest33-21ksoftirqd/211:45:252
15718995120,4cyclictest33-21ksoftirqd/212:12:152
15718995119,4cyclictest33-21ksoftirqd/209:34:322
15718995115,8cyclictest33-21ksoftirqd/207:35:022
1571699512,13cyclictest0-21swapper/011:50:120
2847191500,8ptp4l0-21swapper/311:35:313
2847191500,8ptp4l0-21swapper/311:35:313
2847191500,6ptp4l0-21swapper/007:07:010
2847191500,5ptp4l0-21swapper/312:22:033
2847191500,4ptp4l0-21swapper/309:50:233
2847191500,4ptp4l0-21swapper/211:02:572
2847191500,4ptp4l0-21swapper/110:59:071
2847191500,4ptp4l0-21swapper/012:18:310
2847191500,3ptp4l0-21swapper/208:00:292
2847191500,3ptp4l0-21swapper/208:00:292
15718995024,7cyclictest33-21ksoftirqd/210:51:132
15718995018,3cyclictest33-21ksoftirqd/212:34:452
15718995016,8cyclictest33-21ksoftirqd/207:21:312
15718995013,8cyclictest33-21ksoftirqd/208:40:492
2847191490,3ptp4l0-21swapper/011:15:010
2847191490,3ptp4l0-21swapper/008:40:130
15718994920,4cyclictest33-21ksoftirqd/209:55:312
15718994920,3cyclictest33-21ksoftirqd/209:50:172
15718994919,4cyclictest33-21ksoftirqd/208:15:342
15718994918,3cyclictest33-21ksoftirqd/208:45:202
15718994917,6cyclictest33-21ksoftirqd/207:30:252
15718994917,6cyclictest33-21ksoftirqd/207:30:252
15718994912,8cyclictest33-21ksoftirqd/210:13:572
1571699495,8cyclictest9-21ksoftirqd/007:25:160
15716994919,5cyclictest9-21ksoftirqd/007:55:110
2847191480,10ptp4l0-21swapper/211:05:132
15718994827,8cyclictest33-21ksoftirqd/208:52:292
1571799482,44cyclictest0-21swapper/107:51:401
1571699484,5cyclictest9-21ksoftirqd/010:00:240
1571699482,6cyclictest9-21ksoftirqd/009:45:230
1571699482,5cyclictest19031-21missed_timers07:15:220
1571699481,6cyclictest9-21ksoftirqd/010:10:200
1571699481,6cyclictest31728-21grep12:20:190
2847191470,4ptp4l0-21swapper/109:47:491
2847191470,4ptp4l0-21swapper/010:35:360
15718994735,2cyclictest33-21ksoftirqd/211:50:252
15718994720,6cyclictest33-21ksoftirqd/210:45:072
15718994720,11cyclictest33-21ksoftirqd/209:45:152
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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