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2026-04-30 - 11:24
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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 Thu Apr 30, 2026 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
211552204175,19sleep10-21swapper/119:09:361
211552204175,19sleep10-21swapper/119:09:351
138591204169,24phc2sys0-21swapper/319:06:493
138591204169,24phc2sys0-21swapper/319:06:493
208822201167,22sleep00-21swapper/019:06:000
208822201167,22sleep00-21swapper/019:06:000
209722200167,21sleep20-21swapper/219:07:112
209722200167,21sleep20-21swapper/219:07:112
18222770,2sleep20-21swapper/220:40:142
192892680,2sleep219142-21cstates00:20:142
2149199621,28cyclictest12529-21/usr/sbin/munin00:00:283
21489996128,4cyclictest25-21ksoftirqd/123:15:011
2148899607,42cyclictest7251-21grep22:00:130
2148899607,42cyclictest7251-21grep22:00:130
2148899602,16cyclictest25500-21awk20:20:250
2148899597,6cyclictest31171-21latency_hist19:29:590
253582570,5sleep233-21ksoftirqd/220:20:242
21489995725,4cyclictest25-21ksoftirqd/119:50:001
21489995724,4cyclictest25-21ksoftirqd/121:45:281
2149199560,23cyclictest276502sleep323:02:043
21489995626,4cyclictest25-21ksoftirqd/121:15:111
21489995625,4cyclictest25-21ksoftirqd/122:10:141
21489995623,10cyclictest25-21ksoftirqd/120:25:011
2149199551,23cyclictest1319-21snmpd19:23:513
21489995522,4cyclictest25-21ksoftirqd/100:30:111
2148899557,7cyclictest8624-21apt-get19:50:010
2148899556,6cyclictest22086-21fschecks_count21:20:150
2119725534,14sleep20-21swapper/219:10:002
21489995421,10cyclictest25-21ksoftirqd/122:30:001
21489995418,5cyclictest25-21ksoftirqd/123:40:181
2148899547,5cyclictest11535-21sed19:55:000
2148899545,6cyclictest18084-21cat20:05:260
138491540,1ptp4l391rcuc/323:20:223
2149199531,25cyclictest18904-21date00:20:003
2149199531,24cyclictest24600-21sort21:25:163
21489995325,4cyclictest25-21ksoftirqd/123:00:231
21489995322,4cyclictest25-21ksoftirqd/119:15:261
2148899537,5cyclictest4401-21sed19:40:150
21489995220,4cyclictest25-21ksoftirqd/121:20:251
21489995217,8cyclictest25-21ksoftirqd/121:10:001
21489995216,4cyclictest25-21ksoftirqd/119:30:221
21489995216,4cyclictest25-21ksoftirqd/119:25:251
2148899526,5cyclictest9245-21cstates20:55:130
168682520,2sleep00-21swapper/022:30:160
21491995133,4cyclictest18604-21cron22:35:003
2149199510,21cyclictest1319-21snmpd21:19:163
21489995120,3cyclictest25-21ksoftirqd/122:10:011
21489995118,10cyclictest25-21ksoftirqd/121:50:241
21489995117,9cyclictest25-21ksoftirqd/100:10:151
2148899517,6cyclictest7318-21sed20:50:180
2148899516,5cyclictest31717-21expr21:40:120
2148899512,5cyclictest0-21swapper/023:20:140
21489995020,3cyclictest25-21ksoftirqd/121:40:211
2148899507,5cyclictest23620-21sed22:50:180
2148899506,5cyclictest4318-21cstates20:45:130
257102490,2sleep00-21swapper/023:00:120
21489994918,4cyclictest25-21ksoftirqd/119:35:191
2148899496,6cyclictest23088-21sed20:15:240
2148899495,5cyclictest1932-21expr20:40:140
2148899495,5cyclictest14199-21cstates21:05:140
2148899492,6cyclictest0-21swapper/020:00:000
21491994843,3cyclictest23057-21fschecks_count22:50:143
21489994820,3cyclictest25-21ksoftirqd/121:25:131
21489994819,8cyclictest25-21ksoftirqd/121:30:121
21489994819,7cyclictest25-21ksoftirqd/119:20:201
2148899486,5cyclictest26413-21dpkg20:25:000
2148899485,6cyclictest24311-21cstates19:15:140
2148899485,6cyclictest20385-21phc2sys21:15:210
2148899480,11cyclictest15379-21gzip00:09:390
21489994720,4cyclictest25-21ksoftirqd/121:35:141
21489994719,7cyclictest25-21ksoftirqd/120:25:131
21489994715,4cyclictest25-21ksoftirqd/122:50:001
21489994711,4cyclictest25-21ksoftirqd/123:20:131
2148999470,2cyclictest121rcu_preempt23:20:001
2148899475,6cyclictest16194-21df_abs00:10:130
2148899474,6cyclictest28028-21date19:20:240
21489994618,3cyclictest25-21ksoftirqd/100:00:121
21489994615,8cyclictest25-21ksoftirqd/120:35:281
21489994615,10cyclictest25-21ksoftirqd/100:20:141
21489994612,5cyclictest25-21ksoftirqd/121:00:201
2148899465,5cyclictest27680-21grep21:30:200
21489994515,9cyclictest25-21ksoftirqd/123:55:001
21489994514,7cyclictest25-21ksoftirqd/120:05:131
21489994514,4cyclictest25-21ksoftirqd/122:00:201
21489994514,4cyclictest25-21ksoftirqd/122:00:201
2148899457,6cyclictest14892-21irqrtprio20:00:180
21491994424,16cyclictest41-21ksoftirqd/323:36:593
21489994416,8cyclictest25-21ksoftirqd/119:55:131
21489994412,7cyclictest25-21ksoftirqd/120:00:251
138491440,0ptp4l401ktimersoftd/319:45:123
2148999438,9cyclictest25-21ksoftirqd/122:50:101
21489994315,3cyclictest25-21ksoftirqd/119:10:131
2148999430,2cyclictest121rcu_preempt22:40:211
2148899432,5cyclictest101ktimersoftd/020:30:160
21489994237,3cyclictest25-21ksoftirqd/120:15:001
2148899425,6cyclictest12494-21latency_hist00:00:010
138491420,33ptp4l0-21swapper/319:10:013
138491420,0ptp4l401ktimersoftd/319:17:443
2148999412,3cyclictest121rcu_preempt23:10:001
21489994118,11cyclictest25-21ksoftirqd/120:45:271
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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