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2026-07-15 - 03:29
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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 Wed Jul 15, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1569421390,5sleep0548299cyclictest00:05:280
548499809,61cyclictest12142-21timerandwakeup21:40:282
5484997911,65cyclictest10552-21tune2fs19:20:172
5484997511,62cyclictest0-21swapper/222:20:282
5484997413,11cyclictest15034-21latency_hist21:50:002
548499740,70cyclictest0-21swapper/223:00:152
5484997216,11cyclictest24386-21chrt22:08:482
5484997214,12cyclictest5653-21chrt21:28:132
5484997015,11cyclictest25227-21taskset00:25:322
5484997013,12cyclictest11472-21chrt23:58:532
5484996914,10cyclictest7530-21taskset19:14:382
5484996913,11cyclictest208502chrt00:18:302
5484996814,11cyclictest19538-21taskset23:06:252
5484996814,10cyclictest30452-21taskset20:02:352
5484996810,22cyclictest14936-21df_abs19:30:132
548499679,16cyclictest1979-21hddtemp_smartct22:30:162
548499678,13cyclictest6898-21cut22:40:192
5484996718,15cyclictest8740-21taskset23:51:072
5484996715,11cyclictest14606-21seq20:37:082
5484996714,9cyclictest21604-21cat19:44:592
5484996711,11cyclictest9108-21tr19:15:252
5484996618,11cyclictest6387-21chrt23:48:012
5484996617,10cyclictest902-21taskset21:17:342
5484996614,10cyclictest3104-21awk21:20:292
5484996613,10cyclictest12567-21chrt22:51:212
134491660,4ptp4l0-21swapper/123:00:011
5484996518,10cyclictest22278-21chrt23:14:192
5484996518,10cyclictest13703-21taskset00:02:462
5484996513,11cyclictest29176-21df_abs21:10:142
134491650,26ptp4l0-21swapper/021:33:100
5485996430,4cyclictest41-21ksoftirqd/322:55:003
5485996428,3cyclictest41-21ksoftirqd/323:35:013
5485996418,9cyclictest41-21ksoftirqd/323:00:003
548499649,16cyclictest0-21swapper/223:40:232
5484996417,11cyclictest21731-21taskset22:01:582
5484996417,11cyclictest18844-21taskset19:36:272
5484996410,11cyclictest448-21dbus-daemon00:20:252
134491640,4ptp4l0-21swapper/023:25:330
134491640,3ptp4l212-21systemd-journal22:45:011
5485996331,3cyclictest41-21ksoftirqd/300:20:013
5484996318,9cyclictest14214-21taskset19:26:422
5484996317,10cyclictest30096-21taskset00:36:222
5484996317,10cyclictest23670-21taskset19:49:152
5484996314,16cyclictest6152-21cat21:30:142
5484996313,9cyclictest18420-21missed_timers20:45:212
5484996313,9cyclictest15040-21ls00:05:202
5484996311,9cyclictest1849-21latency_hist23:40:002
548499629,12cyclictest10150-21date20:30:012
548499629,11cyclictest25137-21df_abs23:20:152
5484996218,11cyclictest1146-21chrt22:28:262
5484996218,10cyclictest23953-21chrt20:58:162
5484996212,11cyclictest26170-21sed19:54:592
5484996210,8cyclictest8356-21cpu21:35:152
548499618,23cyclictest0-21swapper/221:50:152
5484996118,17cyclictest7512-21chrt20:22:132
5484996118,16cyclictest549-21chrt20:07:572
5484996118,10cyclictest2836-21chrt20:11:302
5484996117,9cyclictest12181-21taskset20:33:132
5484996114,11cyclictest3334-21chrt20:15:032
134491610,4ptp4l31952-21diskstats22:25:161
5484996017,9cyclictest26225-21taskset21:02:422
5484996017,16cyclictest26476-21taskset22:11:172
5484995917,11cyclictest18640-21taskset00:14:412
5484995917,10cyclictest27866-21taskset00:32:062
5484995917,10cyclictest14876-21taskset22:56:302
5484995914,10cyclictest0-21swapper/223:33:242
5484995910,9cyclictest19738-21/usr/sbin/munin20:50:242
134491590,5ptp4l676-21ntp_states23:35:243
134491590,5ptp4l0-21swapper/219:09:002
134491590,3ptp4l24518-21if_err_enp4s019:50:181
5485995829,3cyclictest41-21ksoftirqd/319:55:293
134491580,4ptp4l20229-21diskstats22:00:140
134491580,4ptp4l0-21swapper/020:26:490
134491580,3ptp4l0-21swapper/121:25:231
5485995726,4cyclictest41-21ksoftirqd/320:52:403
5484995716,11cyclictest10239-21chrt22:45:552
134491570,4ptp4l0-21swapper/119:05:181
134491570,3ptp4l0-21swapper/019:38:270
134491570,3ptp4l0-21swapper/000:00:070
5485995622,7cyclictest41-21ksoftirqd/320:50:003
134491560,4ptp4l0-21swapper/320:33:293
134491560,4ptp4l0-21swapper/000:33:580
134491560,3ptp4l0-21swapper/319:31:113
134491560,3ptp4l0-21swapper/120:20:501
5485995526,7cyclictest41-21ksoftirqd/323:50:003
5485995526,3cyclictest41-21ksoftirqd/323:15:143
5485995524,7cyclictest41-21ksoftirqd/323:55:133
5485995523,4cyclictest41-21ksoftirqd/320:30:003
5485995521,4cyclictest41-21ksoftirqd/320:45:003
5485995521,4cyclictest41-21ksoftirqd/320:45:003
5485995513,4cyclictest41-21ksoftirqd/320:05:123
5484995517,10cyclictest19614-21chrt21:59:332
5484995516,9cyclictest28123-21taskset19:57:262
5484995510,17cyclictest22786-21cstates23:15:152
548499550,15cyclictest0-21swapper/221:05:162
134491550,4ptp4l0-21swapper/023:17:570
134491550,3ptp4l0-21swapper/119:15:241
5485995424,4cyclictest41-21ksoftirqd/300:10:123
5485995421,8cyclictest41-21ksoftirqd/323:20:173
5485995420,8cyclictest41-21ksoftirqd/322:09:593
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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