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2026-06-28 - 12:33
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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 Sun Jun 28, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
162599690,66cyclictest30770-21wc20:10:203
162599684,22cyclictest137891phc2sys22:05:593
293392630,3sleep20-21swapper/221:15:302
162599620,23cyclictest1301-21snmpd00:25:493
162599620,23cyclictest1301-21snmpd00:25:493
162599620,18cyclictest5629-21unixbench_singl19:15:293
162599612,21cyclictest0-21swapper/323:14:473
162599610,58cyclictest14993-21phc2sys-jitter20:45:243
162599610,58cyclictest14993-21phc2sys-jitter20:45:243
162599610,26cyclictest15959-21taskset23:07:173
134491600,4ptp4l162299cyclictest21:24:510
134491600,4ptp4l162299cyclictest21:24:510
134491600,21ptp4l0-21swapper/219:24:592
134491590,4ptp4l0-21swapper/119:26:161
134491590,25ptp4l9-21ksoftirqd/023:21:520
162599580,27cyclictest16319-21taskset00:17:223
162599572,21cyclictest0-21swapper/322:03:473
162599570,54cyclictest2559-21sed20:20:153
162599570,23cyclictest12820-21taskset19:33:073
162599560,18cyclictest137891phc2sys22:31:043
134491560,4ptp4l0-21swapper/221:09:312
134491560,3ptp4l0-21swapper/223:17:422
134491560,3ptp4l0-21swapper/119:35:161
162599553,18cyclictest0-21swapper/323:24:503
134491550,4ptp4l0-21swapper/223:24:412
134491550,3ptp4l0-21swapper/121:35:131
134691540,14getstats0-21swapper/122:57:481
134491540,4ptp4l0-21swapper/221:59:432
134491540,4ptp4l0-21swapper/220:27:282
134491540,2ptp4l0-21swapper/022:02:020
162599532,21cyclictest0-21swapper/322:42:153
162599531,17cyclictest134491ptp4l23:30:063
162599530,24cyclictest22138-21taskset19:54:343
134491530,4ptp4l0-21swapper/221:51:252
134491530,4ptp4l0-21swapper/221:51:242
134491530,4ptp4l0-21swapper/221:24:202
134491530,4ptp4l0-21swapper/221:24:202
134491530,4ptp4l0-21swapper/219:37:192
134491530,4ptp4l0-21swapper/200:27:022
134491530,4ptp4l0-21swapper/200:27:022
134491530,4ptp4l0-21swapper/121:17:451
134491530,4ptp4l0-21swapper/020:00:040
134491530,3ptp4l12725-21proc_pri20:40:242
134491530,3ptp4l0-21swapper/220:55:262
134491530,3ptp4l0-21swapper/200:20:392
213922520,3sleep221393-21irqrtprio22:10:172
162599520,15cyclictest134491ptp4l22:45:293
134691520,13getstats0-21swapper/123:50:271
134491520,4ptp4l0-21swapper/221:02:012
134491520,4ptp4l0-21swapper/219:45:252
134491520,4ptp4l0-21swapper/219:18:482
134491520,4ptp4l0-21swapper/200:05:412
134491520,4ptp4l0-21swapper/119:34:341
134491520,4ptp4l0-21swapper/100:23:351
134491520,3ptp4l0-21swapper/222:03:272
134491520,3ptp4l0-21swapper/019:10:270
162599510,23cyclictest1848-21taskset21:28:523
134491510,4ptp4l0-21swapper/219:12:152
134491510,4ptp4l0-21swapper/100:05:241
134491510,3ptp4l0-21swapper/222:08:412
134491510,3ptp4l0-21swapper/221:11:102
162599500,26cyclictest20288-21runrttasks20:57:593
134491500,8ptp4l31994-21df_inode19:05:150
162599490,46cyclictest31635-21ntp_states23:40:233
134491490,5ptp4l0-21swapper/319:08:013
134491490,5ptp4l0-21swapper/119:09:171
134491490,4ptp4l0-21swapper/120:36:221
134491490,3ptp4l0-21swapper/120:16:051
134491480,9ptp4l0-21swapper/220:32:392
134491480,4ptp4l0-21swapper/323:55:203
134491480,3ptp4l0-21swapper/222:36:422
162599471,25cyclictest22403-21taskset19:55:073
134491470,3ptp4l0-21swapper/219:07:202
134491470,2ptp4l0-21swapper/020:30:050
162599461,42cyclictest24678-21awk22:15:263
1623994641,3cyclictest25-21ksoftirqd/123:50:011
134491460,4ptp4l0-21swapper/220:11:452
134491460,3ptp4l0-21swapper/223:55:502
134491460,3ptp4l0-21swapper/223:32:302
162599452,21cyclictest0-21swapper/320:44:553
162599452,20cyclictest0-21swapper/321:53:593
162599452,20cyclictest0-21swapper/321:53:593
162599450,22cyclictest29888-21taskset23:35:303
134491450,9ptp4l0-21swapper/023:09:290
134491450,6ptp4l26656-21ntp_states22:20:220
134491450,5ptp4l9306-21apt-get22:55:130
134491450,3ptp4l0-21swapper/223:53:022
134491450,3ptp4l0-21swapper/121:58:091
134491450,14ptp4l0-21swapper/020:57:580
162599440,25cyclictest4773-21seq23:54:263
134491440,9ptp4l0-21swapper/300:34:003
134491440,9ptp4l0-21swapper/223:10:412
134491440,9ptp4l0-21swapper/219:50:012
134491440,5ptp4l0-21swapper/222:30:102
134491440,5ptp4l0-21swapper/222:15:092
134491440,4ptp4l2318-21gnome-shell23:03:580
134491440,4ptp4l21738-21ls21:00:230
162599430,40cyclictest16416-21diskstats20:50:133
162599430,28cyclictest17464-21taskset19:43:333
162599430,25cyclictest1317-21runrttasks21:01:353
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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