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2025-12-04 - 09:18
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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 Thu Dec 04, 2025 00:45:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2847191710,7ptp4l0-21swapper/019:05:160
2847191710,7ptp4l0-21swapper/019:05:160
17835997031,3cyclictest9-21ksoftirqd/000:20:000
17836996433,3cyclictest25-21ksoftirqd/120:30:001
17836996433,3cyclictest25-21ksoftirqd/120:30:001
17835996428,4cyclictest9-21ksoftirqd/019:30:000
2847191630,4ptp4l0-21swapper/123:15:351
17836996325,9cyclictest25-21ksoftirqd/121:30:001
2847191610,4ptp4l0-21swapper/319:21:453
2847191610,10ptp4l0-21swapper/119:09:041
2847191610,10ptp4l0-21swapper/119:09:041
17836996124,6cyclictest25-21ksoftirqd/123:45:231
2847191590,4ptp4l0-21swapper/123:14:181
2847191590,4ptp4l0-21swapper/123:14:181
2847191590,3ptp4l0-21swapper/320:07:393
2847191590,2ptp4l0-21swapper/320:55:303
17836995923,6cyclictest25-21ksoftirqd/122:05:281
2847191580,3ptp4l0-21swapper/322:05:343
2847191580,3ptp4l0-21swapper/319:55:273
2847191580,3ptp4l0-21swapper/220:13:382
2847191580,2ptp4l20013-21apt-get19:15:021
17836995832,4cyclictest25-21ksoftirqd/121:45:261
17835995831,4cyclictest9-21ksoftirqd/020:05:160
17835995831,4cyclictest9-21ksoftirqd/019:55:250
17835995828,6cyclictest9-21ksoftirqd/021:50:290
17835995828,3cyclictest9-21ksoftirqd/021:00:200
2847191570,4ptp4l0-21swapper/220:05:162
2847191570,3ptp4l0-21swapper/223:00:292
2847191570,2ptp4l0-21swapper/323:39:463
200752570,6sleep21783799cyclictest21:30:222
17836995730,3cyclictest25-21ksoftirqd/122:15:311
17836995728,4cyclictest25-21ksoftirqd/121:55:261
17836995728,3cyclictest25-21ksoftirqd/122:55:171
17835995726,4cyclictest9-21ksoftirqd/022:05:300
2847191560,4ptp4l0-21swapper/200:34:172
1783699563,9cyclictest25-21ksoftirqd/119:40:001
17836995628,4cyclictest25-21ksoftirqd/120:35:271
17836995628,4cyclictest25-21ksoftirqd/119:20:191
17836995628,4cyclictest25-21ksoftirqd/100:20:221
17836995626,4cyclictest25-21ksoftirqd/122:40:151
17836995625,6cyclictest25-21ksoftirqd/120:45:191
17836995622,3cyclictest25-21ksoftirqd/119:55:171
17835995624,3cyclictest9-21ksoftirqd/020:25:180
17835995624,3cyclictest9-21ksoftirqd/020:25:170
2847191550,3ptp4l0-21swapper/320:11:403
2847191550,3ptp4l0-21swapper/119:12:521
2847191550,2ptp4l0-21swapper/319:19:223
2847191550,12ptp4l0-21swapper/221:19:552
17836995530,5cyclictest25-21ksoftirqd/120:05:191
17836995528,4cyclictest25-21ksoftirqd/120:55:271
17836995527,4cyclictest25-21ksoftirqd/123:30:171
17836995527,4cyclictest25-21ksoftirqd/122:30:211
17835995524,3cyclictest9-21ksoftirqd/022:55:250
2847191540,4ptp4l0-21swapper/222:20:052
2847191540,4ptp4l0-21swapper/219:56:412
2847191540,3ptp4l0-21swapper/220:00:122
17835995421,4cyclictest9-21ksoftirqd/022:15:180
2847191530,3ptp4l0-21swapper/223:11:472
2847191530,3ptp4l0-21swapper/223:11:472
2847191530,3ptp4l0-21swapper/200:35:222
2847191530,3ptp4l0-21swapper/200:00:332
17836995326,4cyclictest25-21ksoftirqd/119:45:181
17836995326,3cyclictest25-21ksoftirqd/100:10:211
17836995325,3cyclictest25-21ksoftirqd/122:25:261
17836995323,4cyclictest25-21ksoftirqd/121:10:181
17835995325,3cyclictest9-21ksoftirqd/019:20:230
17835995318,6cyclictest9-21ksoftirqd/020:40:150
2847191520,4ptp4l1783899cyclictest00:25:293
1783699525,8cyclictest25-21ksoftirqd/120:15:271
1783599527,3cyclictest9-21ksoftirqd/023:15:170
17835995227,3cyclictest9-21ksoftirqd/019:50:290
17835995224,4cyclictest9-21ksoftirqd/000:10:280
17835995223,4cyclictest9-21ksoftirqd/021:30:170
17835995219,6cyclictest9-21ksoftirqd/020:50:220
17835995219,3cyclictest9-21ksoftirqd/023:45:260
17835995217,6cyclictest9-21ksoftirqd/020:35:010
17835995215,4cyclictest9-21ksoftirqd/023:05:160
1783599520,8cyclictest22629-21grep19:20:000
2847191510,5ptp4l0-21swapper/220:24:342
2847191510,4ptp4l0-21swapper/223:07:012
2847191510,4ptp4l0-21swapper/222:07:422
2847191510,3ptp4l0-21swapper/220:15:202
17836995124,2cyclictest25-21ksoftirqd/123:21:401
17836995118,7cyclictest25-21ksoftirqd/120:20:391
17835995128,4cyclictest9-21ksoftirqd/000:20:160
17835995124,3cyclictest9-21ksoftirqd/023:12:130
17835995124,3cyclictest9-21ksoftirqd/023:12:130
17835995123,4cyclictest9-21ksoftirqd/020:03:080
1783599510,8cyclictest8481-21apt-get00:35:010
2847191500,4ptp4l0-21swapper/222:44:532
2847191500,4ptp4l0-21swapper/220:26:292
2847191500,4ptp4l0-21swapper/220:26:292
2847191500,4ptp4l0-21swapper/219:14:552
2847191500,3ptp4l1783899cyclictest23:10:203
2847191500,3ptp4l1783899cyclictest23:10:203
2847191500,3ptp4l0-21swapper/121:05:271
2847191500,10ptp4l0-21swapper/222:30:012
17836995025,5cyclictest25-21ksoftirqd/123:40:171
17836995025,5cyclictest25-21ksoftirqd/123:40:161
17836995023,3cyclictest25-21ksoftirqd/100:30:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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