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2025-06-16 - 13:47
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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 Jun 16, 2025 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191700,4ptp4l29290-21iostat_ios22:20:190
2847191670,4ptp4l0-21swapper/000:20:180
2847191670,4ptp4l0-21swapper/000:20:180
4891996632,4cyclictest41-21ksoftirqd/323:25:013
284892660,4sleep10-21swapper/100:35:301
2847191650,4ptp4l4975-21sh20:20:000
2847191610,5ptp4l0-21swapper/000:00:230
2847191610,4ptp4l0-21swapper/221:12:382
2847191610,3ptp4l823-21apt-get21:20:130
2847191600,5ptp4l0-21swapper/222:20:212
2847191600,4ptp4l0-21swapper/122:45:211
4891995929,6cyclictest41-21ksoftirqd/320:45:203
2847191590,3ptp4l0-21swapper/220:54:582
2847191590,3ptp4l0-21swapper/220:54:582
4891995816,3cyclictest41-21ksoftirqd/300:05:013
489099582,35cyclictest0-21swapper/223:35:182
2847191580,3ptp4l15771-21ls21:50:220
2847191580,3ptp4l0-21swapper/219:10:382
2847191580,3ptp4l0-21swapper/119:30:191
2847191570,4ptp4l0-21swapper/020:39:510
4891995630,3cyclictest41-21ksoftirqd/300:10:203
4891995628,7cyclictest41-21ksoftirqd/322:05:163
2847191560,4ptp4l0-21swapper/023:07:090
2847191560,4ptp4l0-21swapper/022:49:040
2847191560,3ptp4l0-21swapper/021:25:230
4891995526,4cyclictest41-21ksoftirqd/300:30:253
4891995525,4cyclictest41-21ksoftirqd/320:20:003
2847191550,4ptp4l0-21swapper/022:04:330
2847191550,3ptp4l0-21swapper/322:01:593
4891995425,6cyclictest41-21ksoftirqd/300:20:293
4891995425,6cyclictest41-21ksoftirqd/300:20:293
4891995423,3cyclictest41-21ksoftirqd/321:30:153
2847191540,4ptp4l0-21swapper/022:15:050
2847191540,3ptp4l0-21swapper/000:25:260
4891995323,3cyclictest41-21ksoftirqd/323:05:293
4891995322,6cyclictest41-21ksoftirqd/323:25:283
4891995320,7cyclictest41-21ksoftirqd/323:00:233
489099539,8cyclictest33-21ksoftirqd/221:20:002
489099530,6cyclictest33-21ksoftirqd/200:40:002
2847191530,4ptp4l0-21swapper/320:14:383
2847191530,4ptp4l0-21swapper/319:50:223
2847191530,4ptp4l0-21swapper/022:25:330
2847191530,4ptp4l0-21swapper/019:51:390
4891995228,3cyclictest41-21ksoftirqd/319:55:263
4891995221,3cyclictest41-21ksoftirqd/321:45:013
4891995217,7cyclictest41-21ksoftirqd/323:55:013
4890995214,3cyclictest33-21ksoftirqd/219:45:532
2847191520,4ptp4l0-21swapper/121:55:161
2847191520,4ptp4l0-21swapper/019:44:200
2847191520,3ptp4l0-21swapper/120:25:171
2847191520,3ptp4l0-21swapper/100:15:281
4891995123,3cyclictest41-21ksoftirqd/322:15:003
4891995121,4cyclictest41-21ksoftirqd/323:11:333
4891995121,3cyclictest41-21ksoftirqd/319:26:283
2847191510,3ptp4l0-21swapper/319:16:013
2847191510,3ptp4l0-21swapper/000:10:040
4891995032,3cyclictest41-21ksoftirqd/323:55:103
4891995024,3cyclictest41-21ksoftirqd/319:36:203
4891995023,4cyclictest41-21ksoftirqd/300:05:203
4891995022,4cyclictest41-21ksoftirqd/322:15:253
4891995020,2cyclictest41-21ksoftirqd/321:45:243
4891995020,2cyclictest41-21ksoftirqd/321:45:243
2847191500,4ptp4l0-21swapper/322:38:393
2847191500,4ptp4l0-21swapper/023:19:570
2847191500,4ptp4l0-21swapper/019:59:460
2847191500,3ptp4l0-21swapper/023:01:280
2847191500,3ptp4l0-21swapper/019:13:370
4891994924,4cyclictest41-21ksoftirqd/320:40:163
4891994924,3cyclictest41-21ksoftirqd/320:35:183
4891994923,7cyclictest41-21ksoftirqd/320:30:173
489199492,21cyclictest0-21swapper/321:54:053
4891994920,4cyclictest41-21ksoftirqd/320:55:003
4891994920,4cyclictest41-21ksoftirqd/320:55:003
489099490,7cyclictest321ktimersoftd/222:00:002
2847191490,4ptp4l0-21swapper/000:35:400
2847191490,3ptp4l0-21swapper/021:00:150
4891994820,7cyclictest41-21ksoftirqd/319:45:253
4891994818,3cyclictest41-21ksoftirqd/320:55:343
4891994813,8cyclictest41-21ksoftirqd/323:30:213
4890994813,9cyclictest33-21ksoftirqd/200:10:002
489099480,6cyclictest33-21ksoftirqd/219:55:262
489099480,6cyclictest10245-21apt22:50:012
2847191480,4ptp4l0-21swapper/223:26:352
2847191480,3ptp4l0-21swapper/021:05:230
2847191480,3ptp4l0-21swapper/020:12:150
2847191480,13ptp4l0-21swapper/221:50:182
4891994725,10cyclictest41-21ksoftirqd/321:29:053
489099478,6cyclictest33-21ksoftirqd/220:35:252
489099475,9cyclictest33-21ksoftirqd/222:55:022
489099471,6cyclictest321ktimersoftd/219:35:262
489099470,5cyclictest142982chrt21:46:382
489099470,5cyclictest142982chrt21:46:382
2847191470,4ptp4l12853-21apt-get22:55:162
2847191470,4ptp4l0-21swapper/122:40:511
2847191470,4ptp4l0-21swapper/021:17:370
2847191470,4ptp4l0-21swapper/020:00:280
4891994624,4cyclictest41-21ksoftirqd/320:20:183
489199462,3cyclictest121rcu_preempt21:10:003
4891994618,3cyclictest41-21ksoftirqd/320:00:233
489099462,5cyclictest321ktimersoftd/219:25:292
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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