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2026-06-29 - 06:35
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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 29, 2026 00:45:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491660,4ptp4l11267-21apt-get19:40:121
206242640,3sleep30-21swapper/300:35:273
134491640,5ptp4l0-21swapper/320:10:213
2975999637,16cyclictest29571-21cat23:45:200
2975999636,12cyclictest22488-21grep23:30:230
2975999626,9cyclictest0-21swapper/023:50:140
134491610,4ptp4l0-21swapper/323:35:043
317092600,5sleep09-21ksoftirqd/021:30:280
2975999597,11cyclictest1860-21ntpq23:55:230
2975999596,10cyclictest7054-21fschecks_time19:30:150
134491590,4ptp4l0-21swapper/021:40:250
134491590,3ptp4l0-21swapper/023:20:560
2975999585,16cyclictest10504-21irqrtprio23:05:190
2975999584,11cyclictest15601-21cut00:25:190
134491580,3ptp4l0-21swapper/323:50:173
2975999576,9cyclictest8523-21cat23:00:230
2975999574,10cyclictest21144-21cut20:00:180
134491560,5ptp4l0-21swapper/120:15:271
134491560,4ptp4l0-21swapper/223:05:172
2975999555,9cyclictest0-21swapper/022:35:300
2975999554,11cyclictest13259-21date22:00:270
134491550,4ptp4l0-21swapper/323:31:483
134491550,3ptp4l0-21swapper/121:58:261
2975999545,16cyclictest19338-21missed_timers21:05:230
2975999545,10cyclictest13841-21df_abs19:45:140
134491540,4ptp4l0-21swapper/322:01:563
134491540,3ptp4l0-21swapper/321:37:403
134491540,3ptp4l0-21swapper/119:35:021
134491540,13ptp4l1301-21snmpd20:20:133
2975999534,9cyclictest0-21swapper/022:40:140
134491530,4ptp4l0-21swapper/320:34:403
134491530,4ptp4l0-21swapper/300:25:073
134491530,4ptp4l0-21swapper/222:51:362
134491530,4ptp4l0-21swapper/123:08:261
134491530,3ptp4l26716-21cut22:30:203
134491530,3ptp4l0-21swapper/220:53:282
134491530,3ptp4l0-21swapper/120:55:171
134491530,3ptp4l0-21swapper/019:08:330
2975999525,8cyclictest7438-21apt-compat00:09:200
134491520,5ptp4l0-21swapper/319:26:083
134491520,5ptp4l0-21swapper/219:05:112
134491520,4ptp4l0-21swapper/322:35:173
134491520,4ptp4l0-21swapper/123:58:031
134491520,2ptp4l29758-21cyclictest22:55:433
2975999519,7cyclictest5069-21iostat_ios20:35:180
2975999516,10cyclictest20038-21irqrtprio00:35:200
267162510,5sleep00-21swapper/021:20:250
134491510,4ptp4l0-21swapper/323:57:183
134491510,4ptp4l0-21swapper/320:28:003
134491510,4ptp4l0-21swapper/200:35:582
134491510,4ptp4l0-21swapper/123:02:311
134491510,3ptp4l0-21swapper/122:17:261
134491510,3ptp4l0-21swapper/122:17:251
2975999507,11cyclictest21666-21sed22:20:170
2975999505,15cyclictest0-21swapper/000:00:230
2975999505,10cyclictest0-21swapper/019:15:240
2975999503,12cyclictest19631-21ls19:55:250
134491500,4ptp4l0-21swapper/323:25:303
134491500,4ptp4l0-21swapper/323:16:043
134491500,4ptp4l0-21swapper/220:45:322
134491500,4ptp4l0-21swapper/220:16:112
134491500,4ptp4l0-21swapper/219:45:272
134491500,4ptp4l0-21swapper/121:30:091
134491500,3ptp4l0-21swapper/200:31:492
2976099494,4cyclictest25-21ksoftirqd/122:38:501
134491490,4ptp4l0-21swapper/322:12:433
134491490,4ptp4l0-21swapper/223:47:312
134491490,4ptp4l0-21swapper/222:58:152
134491490,4ptp4l0-21swapper/221:40:182
134491490,4ptp4l0-21swapper/220:30:322
134491490,4ptp4l0-21swapper/119:24:341
134491490,4ptp4l0-21swapper/100:18:141
134491490,3ptp4l0-21swapper/323:42:293
134491490,3ptp4l0-21swapper/300:02:003
29760994817,4cyclictest25-21ksoftirqd/122:50:001
29760994817,4cyclictest25-21ksoftirqd/122:50:001
2975999488,14cyclictest28718-21ntp_kernel_pll_20:15:230
2975999487,7cyclictest19252-21if_enp4s022:15:180
2975999487,7cyclictest19252-21if_enp4s022:15:180
2975999483,9cyclictest0-21swapper/020:05:250
134491480,4ptp4l0-21swapper/321:21:283
134491480,4ptp4l0-21swapper/321:11:133
134491480,4ptp4l0-21swapper/121:41:561
134491480,3ptp4l0-21swapper/320:43:403
2975999479,8cyclictest0-21swapper/023:45:010
2975999477,7cyclictest24993-21ssh22:25:280
2975999475,7cyclictest0-21swapper/019:25:180
2975999473,10cyclictest1928-21mailstats22:45:260
2975999473,10cyclictest1928-21mailstats22:45:260
134491470,5ptp4l0-21swapper/119:05:571
134491470,4ptp4l0-21swapper/300:07:303
134491470,4ptp4l0-21swapper/219:55:202
134491470,4ptp4l0-21swapper/122:02:341
134491470,3ptp4l0-21swapper/121:47:551
29760994616,4cyclictest25-21ksoftirqd/121:20:201
2975999467,8cyclictest17004-21ntpq19:50:220
2975999466,6cyclictest0-21swapper/021:29:060
2975999465,8cyclictest137891phc2sys22:50:280
2975999465,10cyclictest0-21swapper/019:35:250
134491460,4ptp4l0-21swapper/322:05:503
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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