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2026-05-13 - 10:50
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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 rackdslot1.osadl.org (updated Wed May 13, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20537997933,9cyclictest25-21ksoftirqd/100:10:001
20537997933,9cyclictest25-21ksoftirqd/100:10:001
20537997427,8cyclictest25-21ksoftirqd/119:25:261
20538997232,9cyclictest33-21ksoftirqd/222:30:202
2053799712,36cyclictest0-21swapper/122:25:201
20537996926,7cyclictest25-21ksoftirqd/119:22:211
20538996834,5cyclictest33-21ksoftirqd/220:05:012
20538996732,6cyclictest33-21ksoftirqd/223:50:222
20538996728,9cyclictest33-21ksoftirqd/222:43:122
2053899672,43cyclictest0-21swapper/220:42:202
20538996634,6cyclictest33-21ksoftirqd/200:25:232
20538996633,4cyclictest33-21ksoftirqd/221:30:162
20538996632,5cyclictest33-21ksoftirqd/219:25:252
20538996630,7cyclictest33-21ksoftirqd/219:35:222
20538996630,5cyclictest33-21ksoftirqd/223:05:002
20538996629,10cyclictest33-21ksoftirqd/220:39:552
20537996529,9cyclictest25-21ksoftirqd/120:10:011
134491650,3ptp4l10673-21awk19:55:283
20538996432,7cyclictest33-21ksoftirqd/220:34:022
20538996431,8cyclictest33-21ksoftirqd/200:16:422
20538996429,6cyclictest33-21ksoftirqd/222:45:222
20538996428,6cyclictest33-21ksoftirqd/221:52:482
20537996430,5cyclictest25-21ksoftirqd/122:15:011
20537996425,8cyclictest25-21ksoftirqd/119:45:001
20536996424,4cyclictest9-21ksoftirqd/023:05:190
20538996330,8cyclictest33-21ksoftirqd/222:52:062
20538996330,6cyclictest33-21ksoftirqd/221:00:282
20538996329,5cyclictest33-21ksoftirqd/219:30:072
20538996328,7cyclictest33-21ksoftirqd/221:20:162
20538996327,7cyclictest33-21ksoftirqd/223:14:292
20538996327,5cyclictest33-21ksoftirqd/219:10:172
20538996233,5cyclictest33-21ksoftirqd/221:10:212
20538996232,3cyclictest33-21ksoftirqd/219:50:252
20538996232,3cyclictest33-21ksoftirqd/219:50:252
20538996230,4cyclictest33-21ksoftirqd/219:20:202
20538996228,5cyclictest33-21ksoftirqd/221:55:172
20538996228,5cyclictest33-21ksoftirqd/219:45:002
20538996227,5cyclictest33-21ksoftirqd/222:15:002
20538996131,5cyclictest33-21ksoftirqd/222:35:192
20538996130,7cyclictest33-21ksoftirqd/222:06:002
20538996129,4cyclictest33-21ksoftirqd/200:35:002
20538996120,15cyclictest33-21ksoftirqd/200:21:142
20537996126,4cyclictest25-21ksoftirqd/123:10:221
134491610,4ptp4l0-21swapper/121:40:111
20538996031,5cyclictest33-21ksoftirqd/219:45:212
20538996029,7cyclictest33-21ksoftirqd/200:09:012
20538996029,7cyclictest33-21ksoftirqd/200:09:012
20538996028,3cyclictest33-21ksoftirqd/223:09:482
20537996027,8cyclictest25-21ksoftirqd/121:15:011
20537996024,7cyclictest25-21ksoftirqd/121:15:221
20537996022,7cyclictest25-21ksoftirqd/122:00:141
134491600,4ptp4l0-21swapper/220:45:182
134491600,4ptp4l0-21swapper/200:10:272
134491600,4ptp4l0-21swapper/200:10:272
20538995930,3cyclictest33-21ksoftirqd/222:55:272
20538995928,7cyclictest33-21ksoftirqd/222:17:322
20538995928,3cyclictest33-21ksoftirqd/200:00:142
20538995924,7cyclictest33-21ksoftirqd/221:07:422
20538995924,7cyclictest33-21ksoftirqd/221:07:422
134491590,3ptp4l823-21ls20:45:203
20538995828,6cyclictest33-21ksoftirqd/200:35:142
20538995821,5cyclictest33-21ksoftirqd/220:55:262
20537995828,7cyclictest25-21ksoftirqd/121:35:271
134491580,4ptp4l0-21swapper/021:05:230
134491580,4ptp4l0-21swapper/021:05:220
20538995733,6cyclictest33-21ksoftirqd/219:55:132
20538995725,6cyclictest33-21ksoftirqd/219:17:082
20538995723,7cyclictest33-21ksoftirqd/223:31:132
20538995723,5cyclictest33-21ksoftirqd/221:25:152
20538995719,5cyclictest33-21ksoftirqd/222:25:252
20538995716,5cyclictest33-21ksoftirqd/220:15:232
20537995724,10cyclictest25-21ksoftirqd/119:10:141
20537995723,10cyclictest25-21ksoftirqd/100:00:271
20537995719,4cyclictest25-21ksoftirqd/122:15:251
134491570,3ptp4l22017-21python21:30:281
20538995622,4cyclictest33-21ksoftirqd/220:10:162
2053799564,7cyclictest25-21ksoftirqd/122:59:591
20537995626,7cyclictest25-21ksoftirqd/119:55:271
20537995625,8cyclictest25-21ksoftirqd/120:45:271
20537995624,4cyclictest25-21ksoftirqd/100:35:291
20537995622,7cyclictest25-21ksoftirqd/121:00:001
20537995621,3cyclictest25-21ksoftirqd/121:05:151
20537995621,3cyclictest25-21ksoftirqd/121:05:151
20537995619,10cyclictest25-21ksoftirqd/122:50:241
134491560,4ptp4l0-21swapper/323:40:163
20538995534,11cyclictest33-21ksoftirqd/221:38:202
20538995527,6cyclictest33-21ksoftirqd/223:20:152
20538995525,6cyclictest33-21ksoftirqd/222:00:242
20538995522,9cyclictest33-21ksoftirqd/223:55:132
2053799553,7cyclictest1729-21grep23:05:261
20537995520,3cyclictest25-21ksoftirqd/120:05:141
134491550,4ptp4l0-21swapper/123:40:131
134491550,3ptp4l16684-21idleruntime22:30:151
134491550,3ptp4l0-21swapper/021:27:290
134491550,3ptp4l0-21swapper/020:50:150
134491550,10ptp4l0-21swapper/019:41:150
2053899543,27cyclictest121rcu_preempt21:48:502
20538995425,8cyclictest33-21ksoftirqd/220:51:372
20538995422,5cyclictest33-21ksoftirqd/221:20:002
20538995420,6cyclictest33-21ksoftirqd/223:40:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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