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2026-06-08 - 05:27
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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 Jun 08, 2026 00:45:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
226922208175,22sleep10-21swapper/119:09:161
226922208175,22sleep10-21swapper/119:09:151
139491206172,22phc2sys0-21swapper/319:06:413
139491206172,22phc2sys0-21swapper/319:06:403
225072205172,22sleep00-21swapper/019:06:490
225072205172,22sleep00-21swapper/019:06:490
225962202170,22sleep20-21swapper/219:08:002
225962202170,22sleep20-21swapper/219:08:002
648121440,6sleep32304599cyclictest23:05:163
648121440,6sleep32304599cyclictest23:05:163
23045996411,15cyclictest23266-21cstates19:10:123
23045996113,18cyclictest20455-21grep23:35:133
23045996113,18cyclictest20455-21grep23:35:133
23045995912,10cyclictest23990-21wc23:40:233
23045995911,18cyclictest30277-21ls20:30:253
2304599589,16cyclictest0-21swapper/322:45:143
23045995813,9cyclictest2518-21gnome-shell00:13:593
23045995812,16cyclictest1300-21snmpd23:51:043
23045995812,15cyclictest9732-21phc2sys-jitter20:55:233
23045995812,10cyclictest1300-21snmpd20:20:233
23045995811,7cyclictest9474-21memory23:10:213
23045995711,11cyclictest1304-21expr20:40:133
23045995612,17cyclictest27816-21/usr/sbin/munin19:20:253
23045995511,16cyclictest7595-21sed20:50:283
23045995511,15cyclictest15386-21cat23:25:003
70762540,4sleep12304399cyclictest21:59:591
23045995412,9cyclictest14190-21irqstats21:05:193
23045995411,10cyclictest2096-21latency_hist00:05:003
182112540,2sleep30-21swapper/322:20:233
23045995312,7cyclictest20207-21irqstats20:10:183
23045995311,8cyclictest19421-21ls23:30:243
2304599528,16cyclictest0-21swapper/321:40:143
23045995213,14cyclictest15553-21/usr/sbin/munin23:25:163
23045995212,7cyclictest11836-21meminfo23:15:193
23045995212,16cyclictest19153-21/usr/sbin/munin22:25:253
166172520,2sleep30-21swapper/321:10:203
23045995112,17cyclictest207-21systemd-journal00:39:503
23045995011,15cyclictest32006-21chrt19:26:103
255512490,2sleep20-21swapper/223:45:152
23045994912,7cyclictest25826-21diskstats19:15:143
23045994912,7cyclictest1063-21irqstats19:30:193
23045994812,7cyclictest2772-21hddtemp_smartct00:05:173
23045994812,7cyclictest2772-21hddtemp_smartct00:05:173
23045994811,8cyclictest7957-21ps22:00:193
23045994811,7cyclictest29049-21ls21:35:253
2304299482,43cyclictest9478-21idleruntime-cro19:50:000
23045994712,15cyclictest26427-21dpkg20:25:133
23045994711,7cyclictest18280-21sensors_temp20:05:243
23045994711,7cyclictest18280-21sensors_temp20:05:243
23045994711,7cyclictest15558-21ls20:00:243
23045994710,7cyclictest1300-21snmpd19:55:173
23045994710,7cyclictest1300-21snmpd00:16:093
23045994611,8cyclictest31817-21ps20:35:203
23045994611,8cyclictest31817-21ps20:35:193
23045994513,15cyclictest14416-21grep22:15:123
2304599449,7cyclictest1552-21ls21:45:253
23045994410,7cyclictest4090-21df_inode23:00:143
23045994310,7cyclictest26760-21ls21:30:253
2304599428,16cyclictest0-21swapper/321:15:233
23045994210,7cyclictest22167-21hddtemp_smartct20:15:173
139391420,0ptp4l401ktimersoftd/322:42:273
23045994112,12cyclictest12355-21diskstats00:25:153
23043994136,3cyclictest25-21ksoftirqd/119:20:001
23042994137,2cyclictest9-21ksoftirqd/000:20:000
23043994025,6cyclictest25-21ksoftirqd/120:15:381
23042994035,3cyclictest9-21ksoftirqd/021:00:000
23042994035,3cyclictest9-21ksoftirqd/020:20:000
2275124031,4sleep20-21swapper/219:10:012
139391400,0ptp4l401ktimersoftd/322:08:263
139391400,0ptp4l401ktimersoftd/322:08:263
139391400,0ptp4l401ktimersoftd/321:20:293
23042993935,2cyclictest9-21ksoftirqd/019:40:000
23044993834,3cyclictest33-21ksoftirqd/220:20:002
2304599377,17cyclictest0-21swapper/322:30:123
23045993731,4cyclictest41-21ksoftirqd/321:50:113
23044993732,3cyclictest33-21ksoftirqd/200:40:002
23043993731,4cyclictest25-21ksoftirqd/123:24:441
23043993730,4cyclictest25-21ksoftirqd/123:15:051
23042993730,5cyclictest9-21ksoftirqd/022:40:000
23042993730,5cyclictest9-21ksoftirqd/022:40:000
23045993630,4cyclictest41-21ksoftirqd/300:30:373
23044993631,3cyclictest2917-21irqrtprio00:05:202
23044993631,3cyclictest2917-21irqrtprio00:05:202
23044993630,4cyclictest33-21ksoftirqd/219:55:002
23043993631,3cyclictest25-21ksoftirqd/122:25:131
23043993631,3cyclictest25-21ksoftirqd/120:40:011
23043993631,3cyclictest25-21ksoftirqd/120:40:001
23043993630,4cyclictest25-21ksoftirqd/123:56:371
23043993630,4cyclictest25-21ksoftirqd/121:15:561
23043993630,4cyclictest25-21ksoftirqd/100:00:271
23043993630,3cyclictest25-21ksoftirqd/121:35:191
23042993632,2cyclictest9-21ksoftirqd/021:10:000
23042993631,3cyclictest9-21ksoftirqd/023:35:000
23042993631,3cyclictest9-21ksoftirqd/020:05:000
23042993630,3cyclictest9-21ksoftirqd/021:00:130
23044993530,3cyclictest33-21ksoftirqd/222:50:152
23044993530,3cyclictest33-21ksoftirqd/220:24:372
23044993529,4cyclictest33-21ksoftirqd/221:30:112
23044993529,4cyclictest33-21ksoftirqd/220:53:342
23044993529,4cyclictest33-21ksoftirqd/219:32:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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