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2026-08-20 - 03:39
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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 Aug 20, 2026 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276882234172,51sleep20-21swapper/219:06:442
276592226160,22sleep30-21swapper/319:06:213
277492204170,22sleep10-21swapper/119:07:321
276352199167,21sleep00-21swapper/019:06:010
1385918564,11phc2sys0-21swapper/319:10:003
138491650,1ptp4l401ktimersoftd/320:58:503
192652620,1sleep30-21swapper/322:05:173
316672600,5sleep22823499cyclictest19:15:192
28234996023,5cyclictest33-21ksoftirqd/223:40:242
28234995723,9cyclictest33-21ksoftirqd/223:55:012
28234995722,6cyclictest33-21ksoftirqd/220:15:232
28234995721,5cyclictest33-21ksoftirqd/219:45:162
188822570,2sleep00-21swapper/023:10:130
28234995626,5cyclictest33-21ksoftirqd/221:45:112
28234995625,8cyclictest33-21ksoftirqd/221:35:172
28234995625,8cyclictest33-21ksoftirqd/221:35:172
28234995623,5cyclictest33-21ksoftirqd/219:30:202
28234995621,5cyclictest33-21ksoftirqd/220:30:092
28234995530,8cyclictest33-21ksoftirqd/200:04:592
28234995521,6cyclictest33-21ksoftirqd/222:25:152
28234995519,8cyclictest33-21ksoftirqd/219:25:442
28234995519,7cyclictest33-21ksoftirqd/220:57:232
28234995428,8cyclictest33-21ksoftirqd/220:35:152
28234995419,7cyclictest33-21ksoftirqd/222:52:292
28234995325,7cyclictest33-21ksoftirqd/219:10:122
28234995320,5cyclictest33-21ksoftirqd/221:10:192
2823499526,6cyclictest33-21ksoftirqd/223:25:122
2823499515,5cyclictest33-21ksoftirqd/221:20:282
2823499514,8cyclictest33-21ksoftirqd/223:45:242
28234995146,3cyclictest311rcuc/223:30:142
2823499514,4cyclictest33-21ksoftirqd/220:00:212
2823499513,5cyclictest33-21ksoftirqd/219:50:192
28234995124,7cyclictest33-21ksoftirqd/221:15:132
28234995119,5cyclictest33-21ksoftirqd/220:25:232
2823499505,7cyclictest33-21ksoftirqd/221:25:162
2823499502,5cyclictest33-21ksoftirqd/222:00:132
28234995022,5cyclictest33-21ksoftirqd/200:40:002
28234995020,6cyclictest33-21ksoftirqd/220:50:242
28234995016,5cyclictest33-21ksoftirqd/221:50:172
34802490,1sleep10-21swapper/119:25:001
2823499495,9cyclictest33-21ksoftirqd/219:55:242
2823499495,9cyclictest33-21ksoftirqd/219:55:242
2823499494,5cyclictest33-21ksoftirqd/223:10:002
2823499493,7cyclictest33-21ksoftirqd/223:20:002
2823499493,7cyclictest33-21ksoftirqd/223:20:002
2823499493,5cyclictest33-21ksoftirqd/200:20:132
2823499492,6cyclictest33-21ksoftirqd/200:30:222
28234994922,4cyclictest33-21ksoftirqd/222:45:262
2823499492,10cyclictest33-21ksoftirqd/220:45:172
28232994931,16cyclictest9-21ksoftirqd/021:30:010
258192490,2sleep00-21swapper/000:30:120
2823499485,8cyclictest33-21ksoftirqd/222:40:122
2823499485,7cyclictest33-21ksoftirqd/220:10:252
2823499485,7cyclictest33-21ksoftirqd/219:20:002
2823499485,6cyclictest33-21ksoftirqd/200:10:252
2823499485,4cyclictest33-21ksoftirqd/223:10:182
2823499484,6cyclictest33-21ksoftirqd/221:55:242
2823499484,6cyclictest33-21ksoftirqd/221:00:162
2823499484,5cyclictest33-21ksoftirqd/219:40:172
2823499483,5cyclictest33-21ksoftirqd/222:20:232
2823499483,5cyclictest33-21ksoftirqd/222:10:152
28234994813,5cyclictest33-21ksoftirqd/222:40:002
2823499477,6cyclictest33-21ksoftirqd/223:58:012
2823499475,6cyclictest33-21ksoftirqd/200:15:252
2823499475,11cyclictest33-21ksoftirqd/200:05:132
2823499473,7cyclictest33-21ksoftirqd/220:40:132
2823499472,7cyclictest33-21ksoftirqd/222:55:232
2823499472,6cyclictest33-21ksoftirqd/222:05:272
28234994722,6cyclictest33-21ksoftirqd/221:30:262
28234994719,9cyclictest33-21ksoftirqd/221:10:002
28235994631,12cyclictest41-21ksoftirqd/323:45:113
2823499466,8cyclictest33-21ksoftirqd/200:25:252
2823499465,6cyclictest33-21ksoftirqd/223:20:142
2823499465,5cyclictest33-21ksoftirqd/221:40:232
2823499464,9cyclictest33-21ksoftirqd/222:15:232
2823499464,8cyclictest33-21ksoftirqd/223:35:172
2823499464,6cyclictest33-21ksoftirqd/222:30:142
2823499464,5cyclictest33-21ksoftirqd/223:00:132
2823499464,5cyclictest33-21ksoftirqd/219:35:202
2823499455,6cyclictest33-21ksoftirqd/220:05:202
28235994312,3cyclictest25804-21/usr/sbin/munin00:30:183
2823499434,5cyclictest33-21ksoftirqd/220:20:012
138491430,0ptp4l401ktimersoftd/322:40:533
138491430,0ptp4l401ktimersoftd/322:19:563
138491430,0ptp4l401ktimersoftd/300:35:303
138491420,0ptp4l401ktimersoftd/321:35:333
138491420,0ptp4l401ktimersoftd/321:35:333
138491420,0ptp4l401ktimersoftd/320:06:273
138491410,0ptp4l401ktimersoftd/323:16:473
138491410,0ptp4l401ktimersoftd/323:16:473
138591390,2phc2sys121rcu_preempt20:20:273
138491390,0ptp4l401ktimersoftd/323:00:193
28233993832,4cyclictest25-21ksoftirqd/123:12:141
28233993710,26cyclictest0-21swapper/119:10:331
28232993731,4cyclictest9-21ksoftirqd/020:49:480
28235993630,4cyclictest41-21ksoftirqd/322:24:593
28235993630,4cyclictest41-21ksoftirqd/321:57:233
28235993629,4cyclictest41-21ksoftirqd/320:48:143
28233993631,3cyclictest25-21ksoftirqd/123:31:051
28233993630,4cyclictest25-21ksoftirqd/120:32:291
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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