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2026-07-24 - 22:04
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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 rackdslot4.osadl.org (updated Fri Jul 24, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
55062207172,23sleep30-21swapper/307:06:223
56852202169,22sleep00-21swapper/007:08:420
56302202169,22sleep20-21swapper/207:07:592
55162202169,22sleep10-21swapper/107:06:291
300322650,2sleep20-21swapper/209:00:202
6087996432,7cyclictest33-21ksoftirqd/211:55:002
608899635,11cyclictest23097-21grep10:55:253
6087996332,9cyclictest33-21ksoftirqd/208:40:012
58382630,4sleep15839-21unixbench_singl11:25:281
6087996230,6cyclictest33-21ksoftirqd/211:40:222
6087996230,6cyclictest33-21ksoftirqd/211:40:222
138491620,1ptp4l0-21swapper/312:34:313
608899615,12cyclictest29764-21irqrtprio11:10:183
608899605,10cyclictest23693-21latency_hist09:54:593
608899604,12cyclictest6458-21cat10:25:003
608899604,12cyclictest11183-21cat09:29:593
608899604,11cyclictest24776-21missed_timers07:45:223
6087996027,6cyclictest33-21ksoftirqd/211:30:242
608899595,11cyclictest13542-21sshd09:34:393
608899594,16cyclictest20225-21awk07:35:273
608899594,11cyclictest7098-21df_abs08:15:143
608899594,11cyclictest14645-21cut08:30:143
608899594,10cyclictest27362-21cut10:00:193
6087995925,5cyclictest33-21ksoftirqd/212:00:152
6087995923,4cyclictest33-21ksoftirqd/207:54:112
608899584,11cyclictest7454-21processes07:10:243
608899584,11cyclictest6635-21egrep10:25:133
608899584,11cyclictest29715-21cut07:55:213
608899584,11cyclictest24647-21cut12:05:193
608899584,11cyclictest1360-21expr12:25:133
608899584,11cyclictest10097-21cut08:20:193
608899584,10cyclictest7660-21grep12:35:233
608899584,10cyclictest19226-21df_abs11:55:143
608899583,11cyclictest22403-21missed_timers12:00:233
608899583,10cyclictest8562-21/usr/sbin/munin07:15:213
6087995828,3cyclictest33-21ksoftirqd/209:30:132
6087995825,8cyclictest33-21ksoftirqd/210:05:132
6087995823,4cyclictest33-21ksoftirqd/212:40:002
608899575,11cyclictest24849-21irqrtprio08:50:193
608899574,12cyclictest5118-21cat09:15:233
608899574,12cyclictest4993-21cut11:25:193
608899574,12cyclictest12335-21irqrtprio11:40:183
608899574,12cyclictest12335-21irqrtprio11:40:183
608899574,11cyclictest31537-21df_abs12:20:153
608899574,11cyclictest1753-21cstates08:05:123
608899573,11cyclictest21311-21latency_hist10:55:003
6087995729,7cyclictest33-21ksoftirqd/209:15:152
6087995728,5cyclictest33-21ksoftirqd/211:00:192
6087995727,5cyclictest33-21ksoftirqd/208:15:002
6087995726,9cyclictest33-21ksoftirqd/208:25:242
6087995724,5cyclictest33-21ksoftirqd/207:29:592
6087995723,9cyclictest33-21ksoftirqd/207:45:012
608899565,9cyclictest31289-21sed09:05:003
608899564,12cyclictest18932-21cut08:40:003
608899563,11cyclictest788-21unixbench_multi08:00:263
608899563,11cyclictest4245-21cpuspeed_turbos08:10:143
608899563,11cyclictest16060-21latency_hist09:40:013
608899563,10cyclictest16165-21/usr/sbin/munin07:30:123
6087995628,6cyclictest33-21ksoftirqd/208:45:122
6087995627,9cyclictest33-21ksoftirqd/210:30:232
6087995627,7cyclictest33-21ksoftirqd/211:10:012
6087995626,5cyclictest33-21ksoftirqd/208:10:002
6087995625,4cyclictest33-21ksoftirqd/209:40:232
6087995624,5cyclictest33-21ksoftirqd/210:50:172
6087995624,3cyclictest33-21ksoftirqd/211:55:182
6087995623,4cyclictest33-21ksoftirqd/212:20:002
608899554,18cyclictest2548-21cut11:20:193
608899554,11cyclictest16106-21latency_hist11:50:003
608899554,11cyclictest14956-21sed09:35:213
608899554,10cyclictest3734-21latency_hist09:15:013
608899553,11cyclictest29253-21df_abs10:05:153
608899553,11cyclictest11173-21latency_hist11:40:003
6087995527,5cyclictest33-21ksoftirqd/212:05:252
6087995526,7cyclictest33-21ksoftirqd/210:15:162
608899547,11cyclictest22354-21awk07:40:223
608899544,18cyclictest12590-21cat07:20:273
608899544,11cyclictest28245-21sed11:05:253
608899544,11cyclictest12095-21cut10:35:163
608899543,9cyclictest30103-21cut12:15:223
608899543,10cyclictest15901-21latency_hist07:30:003
6087995425,5cyclictest33-21ksoftirqd/209:14:332
6087995425,3cyclictest33-21ksoftirqd/208:55:212
6087995423,5cyclictest33-21ksoftirqd/209:45:202
6087995422,5cyclictest33-21ksoftirqd/210:00:012
6087995419,4cyclictest33-21ksoftirqd/207:15:272
6087995410,3cyclictest33-21ksoftirqd/207:45:172
608899536,11cyclictest17541-21awk09:40:233
608899534,19cyclictest21396-21cat08:45:003
608899534,16cyclictest3180-21switchtime10:15:243
608899533,10cyclictest17961-21timerandwakeup11:50:253
608899532,10cyclictest0-21swapper/310:15:003
6087995320,5cyclictest33-21ksoftirqd/209:20:162
608899526,19cyclictest24413-21awk09:55:183
608899524,17cyclictest8844-21latency_hist11:35:003
608899524,17cyclictest28757-21date07:55:013
608899522,10cyclictest0-21swapper/308:27:593
608799518,3cyclictest33-21ksoftirqd/211:10:142
608799516,6cyclictest33-21ksoftirqd/208:35:012
608799516,2cyclictest33-21ksoftirqd/208:40:222
6087995121,5cyclictest33-21ksoftirqd/212:25:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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