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2026-08-13 - 22:51
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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 Aug 13, 2026 12:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2546699674,61cyclictest0-21swapper/210:20:282
25464996733,6cyclictest9-21ksoftirqd/010:15:280
25464996732,6cyclictest9-21ksoftirqd/009:15:000
25464996532,7cyclictest9-21ksoftirqd/008:40:160
25464996431,6cyclictest9-21ksoftirqd/009:45:280
25464996431,6cyclictest9-21ksoftirqd/009:44:590
134491640,4ptp4l0-21swapper/107:30:571
134491640,3ptp4l13009-21apt-get11:20:111
25464996331,6cyclictest9-21ksoftirqd/011:35:250
25464996331,5cyclictest9-21ksoftirqd/012:30:000
25464996331,5cyclictest9-21ksoftirqd/012:30:000
25464996233,4cyclictest9-21ksoftirqd/010:30:120
25464996231,6cyclictest9-21ksoftirqd/008:45:200
25464996230,5cyclictest9-21ksoftirqd/011:05:180
25464996230,5cyclictest9-21ksoftirqd/008:30:210
25464996229,5cyclictest9-21ksoftirqd/010:35:100
25464996228,6cyclictest9-21ksoftirqd/008:10:200
2546799618,11cyclictest27488-21taskset07:14:263
2546799618,11cyclictest27488-21taskset07:14:263
25464996132,6cyclictest9-21ksoftirqd/011:10:160
25464996131,5cyclictest9-21ksoftirqd/011:20:010
25464996130,5cyclictest9-21ksoftirqd/007:15:220
25464996129,6cyclictest9-21ksoftirqd/012:35:150
25464996129,3cyclictest9-21ksoftirqd/007:50:010
25464996128,5cyclictest9-21ksoftirqd/007:10:120
25464996128,5cyclictest9-21ksoftirqd/007:10:120
25464996127,5cyclictest9-21ksoftirqd/007:55:180
2546499610,2cyclictest137891phc2sys07:42:410
25464996032,3cyclictest9-21ksoftirqd/010:10:260
25464996030,5cyclictest9-21ksoftirqd/009:00:010
25464996030,5cyclictest9-21ksoftirqd/009:00:010
25464996028,6cyclictest9-21ksoftirqd/009:20:160
25464996028,5cyclictest9-21ksoftirqd/011:05:010
25464996025,5cyclictest9-21ksoftirqd/010:05:130
2546799596,11cyclictest5546-21taskset11:01:543
25464995933,7cyclictest9-21ksoftirqd/008:38:080
25464995930,5cyclictest9-21ksoftirqd/010:50:140
25464995927,5cyclictest9-21ksoftirqd/009:30:140
134491590,4ptp4l0-21swapper/208:47:032
134491590,4ptp4l0-21swapper/012:00:170
47152580,6sleep02546499cyclictest09:50:240
2546699587,6cyclictest0-21swapper/211:20:202
25464995831,6cyclictest9-21ksoftirqd/011:50:470
25464995828,4cyclictest9-21ksoftirqd/011:40:140
25464995825,6cyclictest9-21ksoftirqd/008:15:180
25464995825,5cyclictest9-21ksoftirqd/010:20:180
25464995825,5cyclictest9-21ksoftirqd/007:25:130
134491580,4ptp4l0-21swapper/211:15:032
134491580,4ptp4l0-21swapper/112:20:201
134491580,1ptp4l241ktimersoftd/111:33:271
25464995729,8cyclictest9-21ksoftirqd/011:30:000
25464995726,4cyclictest9-21ksoftirqd/011:55:160
25464995725,5cyclictest9-21ksoftirqd/008:50:140
134491570,4ptp4l0-21swapper/309:29:113
134491570,4ptp4l0-21swapper/309:29:113
134491570,3ptp4l0-21swapper/211:27:002
134491570,3ptp4l0-21swapper/108:40:291
134491570,12ptp4l0-21swapper/109:05:121
25464995629,7cyclictest9-21ksoftirqd/010:50:000
25464995629,7cyclictest9-21ksoftirqd/009:25:140
25464995629,7cyclictest9-21ksoftirqd/009:25:140
25464995623,5cyclictest9-21ksoftirqd/008:05:110
25464995622,5cyclictest9-21ksoftirqd/008:05:010
2546799558,12cyclictest17269-21taskset11:28:583
2546799557,12cyclictest17017-21taskset10:17:563
2546699557,7cyclictest0-21swapper/207:35:212
2546499556,5cyclictest9-21ksoftirqd/011:50:000
25464995519,6cyclictest9-21ksoftirqd/007:20:260
134491550,4ptp4l0-21swapper/112:01:571
134491550,3ptp4l0-21swapper/110:21:081
134491550,3ptp4l0-21swapper/109:19:421
2546699547,12cyclictest0-21swapper/210:00:272
2546699546,6cyclictest0-21swapper/209:32:322
2546699546,10cyclictest0-21swapper/208:36:052
2546699546,10cyclictest0-21swapper/208:19:322
2546699545,6cyclictest0-21swapper/207:20:162
2546499546,5cyclictest27528-21apt-get08:25:000
25464995426,3cyclictest9-21ksoftirqd/010:40:180
25464995423,7cyclictest9-21ksoftirqd/007:35:240
25464995420,5cyclictest9-21ksoftirqd/010:55:260
25464995418,6cyclictest9-21ksoftirqd/007:30:210
134491540,3ptp4l0-21swapper/311:51:163
2546699537,6cyclictest0-21swapper/207:30:202
2546699537,10cyclictest0-21swapper/207:50:592
25464995325,8cyclictest9-21ksoftirqd/009:15:200
134491530,4ptp4l0-21swapper/111:26:321
134491530,4ptp4l0-21swapper/110:38:081
134491530,3ptp4l0-21swapper/111:04:041
134491530,3ptp4l0-21swapper/108:54:221
134491530,3ptp4l0-21swapper/107:35:531
134491530,10ptp4l23133-21apt-get07:05:121
2546799528,11cyclictest12638-21taskset12:29:223
2546799528,11cyclictest12638-21taskset12:29:213
2546799526,6cyclictest0-21swapper/310:45:213
2546799521,11cyclictest10803-21grep08:55:183
2546799521,11cyclictest10803-21grep08:55:183
2546699526,3cyclictest0-21swapper/209:35:172
2546699526,10cyclictest0-21swapper/212:30:532
2546499525,3cyclictest9-21ksoftirqd/011:25:010
2546499522,2cyclictest121rcu_preempt10:05:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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