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2025-12-08 - 13:25
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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 Dec 08, 2025 00:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1216723890,10sleep125-21ksoftirqd/119:07:021
1216723890,10sleep125-21ksoftirqd/119:07:021
137191205170,23phc2sys0-21swapper/319:09:073
137191205170,23phc2sys0-21swapper/319:09:073
123742204170,22sleep20-21swapper/219:09:382
123742204170,22sleep20-21swapper/219:09:382
121982202168,22sleep00-21swapper/019:07:190
121982202168,22sleep00-21swapper/019:07:190
2233921410,7sleep21269899cyclictest23:59:452
136991800,1ptp4l8193-21fschecks_count21:15:163
136991720,1ptp4l28464-21fschecks_count20:50:183
12698996320,6cyclictest33-21ksoftirqd/223:35:122
136991620,1ptp4l401ktimersoftd/321:10:573
223812610,6sleep11269799cyclictest00:00:001
136991540,39ptp4l0-21swapper/319:10:013
136991540,1ptp4l391rcuc/320:45:083
12698995422,8cyclictest33-21ksoftirqd/222:49:042
12698995418,5cyclictest33-21ksoftirqd/223:35:002
1269899539,41cyclictest25399-21kworker/2:122:20:272
12698995320,3cyclictest33-21ksoftirqd/221:28:332
12698995221,8cyclictest33-21ksoftirqd/220:57:352
12698995130,18cyclictest33-21ksoftirqd/220:00:002
12698995122,4cyclictest33-21ksoftirqd/200:20:212
307642500,1sleep00-21swapper/023:10:010
12698995022,9cyclictest33-21ksoftirqd/220:05:282
12698995022,9cyclictest33-21ksoftirqd/220:05:282
12698995014,5cyclictest33-21ksoftirqd/219:25:272
12698995012,7cyclictest33-21ksoftirqd/221:05:272
12698995012,7cyclictest33-21ksoftirqd/221:05:272
12698994921,3cyclictest33-21ksoftirqd/221:45:212
12698994919,6cyclictest33-21ksoftirqd/221:35:232
12698994918,4cyclictest33-21ksoftirqd/219:30:162
12698994916,4cyclictest33-21ksoftirqd/219:42:162
136991480,1ptp4l401ktimersoftd/321:32:553
1269899482,2cyclictest33-21ksoftirqd/219:20:002
12698994819,4cyclictest33-21ksoftirqd/220:20:262
12698994818,4cyclictest33-21ksoftirqd/222:29:012
12698994818,4cyclictest33-21ksoftirqd/222:29:012
12698994818,3cyclictest33-21ksoftirqd/200:25:152
12698994815,31cyclictest25399-21kworker/2:123:15:272
12698994814,3cyclictest33-21ksoftirqd/221:00:252
12697994841,4cyclictest2105-21cron00:25:001
1269899479,4cyclictest33-21ksoftirqd/220:35:242
1269899479,4cyclictest33-21ksoftirqd/220:35:232
12698994738,2cyclictest33-21ksoftirqd/219:20:312
12698994718,4cyclictest33-21ksoftirqd/220:45:252
12698994717,3cyclictest33-21ksoftirqd/200:15:202
12698994716,7cyclictest33-21ksoftirqd/222:40:222
12698994716,4cyclictest33-21ksoftirqd/200:35:182
12698994715,4cyclictest33-21ksoftirqd/200:10:182
12698994711,4cyclictest33-21ksoftirqd/223:45:012
12698994711,4cyclictest33-21ksoftirqd/221:10:202
12698994711,4cyclictest33-21ksoftirqd/219:10:132
12698994613,9cyclictest33-21ksoftirqd/221:20:212
1269899460,2cyclictest0-21swapper/220:25:272
1269899459,6cyclictest33-21ksoftirqd/220:00:162
1269899457,2cyclictest33-21ksoftirqd/222:10:002
12698994516,9cyclictest33-21ksoftirqd/220:17:122
12698994516,4cyclictest33-21ksoftirqd/221:45:002
12698994515,9cyclictest33-21ksoftirqd/223:10:262
12698994514,9cyclictest33-21ksoftirqd/200:05:012
12698994513,4cyclictest33-21ksoftirqd/222:32:552
12698994512,6cyclictest33-21ksoftirqd/222:55:152
12698994512,6cyclictest33-21ksoftirqd/222:55:152
1269899447,6cyclictest33-21ksoftirqd/219:45:282
12698994439,3cyclictest33-21ksoftirqd/219:40:012
136991430,0ptp4l401ktimersoftd/322:15:203
136991430,0ptp4l401ktimersoftd/320:13:193
12698994338,3cyclictest33-21ksoftirqd/220:54:592
12698994338,2cyclictest33-21ksoftirqd/221:55:002
12698994337,3cyclictest33-21ksoftirqd/223:05:002
1269899432,3cyclictest33-21ksoftirqd/200:30:122
12696994326,9cyclictest9-21ksoftirqd/020:20:000
12698994237,3cyclictest33-21ksoftirqd/222:00:002
12698994237,3cyclictest33-21ksoftirqd/222:00:002
12698994236,3cyclictest33-21ksoftirqd/223:30:002
12698994236,3cyclictest33-21ksoftirqd/223:30:002
12698994236,3cyclictest33-21ksoftirqd/222:20:002
12698994235,3cyclictest33-21ksoftirqd/223:05:062
12698994212,3cyclictest33-21ksoftirqd/222:37:402
136991410,0ptp4l401ktimersoftd/323:07:443
12699994136,3cyclictest41-21ksoftirqd/300:40:013
1269899417,3cyclictest33-21ksoftirqd/221:15:282
1269899414,2cyclictest33-21ksoftirqd/223:40:202
1269899412,3cyclictest33-21ksoftirqd/222:50:202
1269899412,2cyclictest121rcu_preempt22:00:212
1269899412,25cyclictest25399-21kworker/2:100:05:192
1269899411,3cyclictest33-21ksoftirqd/219:50:292
136991400,0ptp4l401ktimersoftd/322:20:353
132891400,1getstats0-21swapper/300:25:333
12699994011,3cyclictest41-21ksoftirqd/323:45:213
12698994034,3cyclictest33-21ksoftirqd/222:15:002
12698994016,7cyclictest33-21ksoftirqd/223:50:242
12698994015,6cyclictest33-21ksoftirqd/220:40:282
12699993934,3cyclictest41-21ksoftirqd/322:00:003
12699993934,3cyclictest41-21ksoftirqd/322:00:003
12698993927,3cyclictest33-21ksoftirqd/221:30:182
1269899391,3cyclictest33-21ksoftirqd/220:10:192
1269899390,7cyclictest33-21ksoftirqd/220:35:012
12696993935,2cyclictest9-21ksoftirqd/019:45:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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