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2026-05-25 - 05:17
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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 rackdslot3.osadl.org (updated Mon May 25, 2026 00:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491207173,22phc2sys0-21swapper/319:08:413
156592204171,22sleep10-21swapper/119:05:591
156302204169,23sleep20-21swapper/219:05:362
158572203170,22sleep00-21swapper/019:08:270
2098521590,3sleep11626999cyclictest20:25:221
1230021380,5sleep11626999cyclictest23:30:181
139391730,1ptp4l391rcuc/323:55:183
16269996713,52cyclictest0-21swapper/100:35:531
63642650,7sleep21627099cyclictest19:55:222
263082610,5sleep10-21swapper/120:35:291
1627199618,6cyclictest3867-21awk20:59:593
134391610,6getstats1627199cyclictest20:22:213
168112580,3sleep2311rcuc/219:10:182
1627199578,7cyclictest6661-21tr21:05:143
1627199571,16cyclictest20973-21sort22:40:193
1627199569,9cyclictest11054-21sed20:05:203
1627199567,7cyclictest6554-21latency_hist23:20:013
1627199564,17cyclictest8789-21iwlist00:30:163
1627199561,16cyclictest19476-21irqrtprio19:15:193
1627199561,12cyclictest13845-21cat23:34:593
1627199561,11cyclictest15009-21latency_hist22:29:593
1627199554,5cyclictest0-21swapper/320:40:143
1627199546,7cyclictest13014-21cut20:10:163
1627199543,10cyclictest24581-21cat22:50:013
1627199540,12cyclictest0-21swapper/319:20:183
16270995422,3cyclictest33-21ksoftirqd/223:50:152
139391540,1ptp4l391rcuc/323:25:153
1627199536,6cyclictest30340-21idleruntime-cro19:40:013
1627199534,11cyclictest20393-21ls23:45:263
1627199534,10cyclictest3180-21expr19:50:143
1627199534,10cyclictest22100-21latency23:50:193
1627199532,16cyclictest27095-21/usr/sbin/munin22:55:153
1627199531,11cyclictest18171-21sshd19:11:523
1627199530,9cyclictest12471-21phc2sys-jitter21:15:243
1627199527,6cyclictest2431-21if_enp4s023:10:163
1627199526,7cyclictest11262-21sed22:20:183
1627199524,11cyclictest29806-21awk21:50:283
1627199523,9cyclictest7583-21grep23:20:193
1627199521,9cyclictest29822-21df_abs23:00:143
1627199521,9cyclictest0-21swapper/320:50:013
1627199512,9cyclictest1210-21cstates00:15:153
1627199511,19cyclictest14485-21cut21:20:183
1627099518,14cyclictest33-21ksoftirqd/219:50:202
16270995120,4cyclictest33-21ksoftirqd/222:15:162
1627199502,5cyclictest0-21swapper/321:10:263
1627199502,10cyclictest16933-21awk22:30:273
1627199500,11cyclictest310-21ls19:45:003
1627199500,11cyclictest22004-21cat21:35:203
16270995019,5cyclictest33-21ksoftirqd/220:40:142
1627199493,6cyclictest0-21swapper/300:20:193
1627199492,6cyclictest0-21swapper/321:34:593
1627199491,17cyclictest17759-21sed21:25:273
1627199490,11cyclictest25136-21sed19:25:273
1627199490,11cyclictest25136-21sed19:25:273
16270994921,3cyclictest33-21ksoftirqd/222:25:142
16270994918,6cyclictest33-21ksoftirqd/220:55:232
1627199482,16cyclictest29940-21sed00:05:293
1627199482,14cyclictest26319-21if_enp1s021:45:153
1627199482,11cyclictest24778-21mailstats21:40:233
1627199481,17cyclictest17419-21cat23:40:193
1627199481,10cyclictest3110-21/usr/sbin/munin22:05:203
1627199481,10cyclictest3110-21/usr/sbin/munin22:05:203
1627199480,10cyclictest6180-21sed19:55:193
16270994820,4cyclictest33-21ksoftirqd/223:10:232
16270994819,5cyclictest33-21ksoftirqd/200:20:182
16270994816,6cyclictest33-21ksoftirqd/200:20:002
16270994816,6cyclictest33-21ksoftirqd/200:15:002
1627199476,7cyclictest5694-21cstates22:10:143
1627199476,6cyclictest6049-21cstates00:25:103
1627199473,5cyclictest0-21swapper/321:55:183
1627199472,11cyclictest31981-21df_abs20:50:143
1627199472,11cyclictest18440-21sed22:35:193
1627199471,5cyclictest0-21swapper/322:50:163
1627199471,5cyclictest0-21swapper/320:20:003
1627199471,16cyclictest7673-21/usr/sbin/munin20:00:233
1627199470,17cyclictest22182-21/usr/sbin/munin20:30:173
16270994717,8cyclictest33-21ksoftirqd/223:40:012
16270994717,8cyclictest33-21ksoftirqd/223:40:012
16270994715,4cyclictest33-21ksoftirqd/221:45:112
16270994615,5cyclictest33-21ksoftirqd/222:00:132
16270994615,4cyclictest33-21ksoftirqd/220:15:012
1627199452,14cyclictest1300-21snmpd20:35:113
16270994533,9cyclictest33-21ksoftirqd/200:25:222
16270994515,3cyclictest33-21ksoftirqd/223:55:132
16270994514,5cyclictest33-21ksoftirqd/221:10:012
1627199441,7cyclictest1237-21if_enp1s022:00:163
1627199441,16cyclictest26060-21cstates19:30:133
1627199441,15cyclictest760-21expr19:45:133
1627199441,11cyclictest1799-21cut23:10:003
1627099444,11cyclictest121rcu_preempt00:05:322
16270994418,4cyclictest33-21ksoftirqd/222:35:202
16270994415,4cyclictest33-21ksoftirqd/223:40:262
16270994413,5cyclictest33-21ksoftirqd/223:05:172
16270994412,6cyclictest33-21ksoftirqd/219:45:232
16270994412,4cyclictest33-21ksoftirqd/223:20:132
16270994411,4cyclictest33-21ksoftirqd/220:10:012
1626999440,20cyclictest0-21swapper/123:02:031
1627199431,11cyclictest26920-21ls00:00:203
1627199430,11cyclictest12219-21sed00:35:273
1627099438,4cyclictest33-21ksoftirqd/221:55:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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