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2026-04-08 - 16:30
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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 Wed Apr 08, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
179412227163,21sleep10-21swapper/107:09:571
139491207173,22phc2sys0-21swapper/307:07:493
177662204171,22sleep20-21swapper/207:07:422
177692201168,22sleep00-21swapper/007:07:440
1040721730,7sleep11823799cyclictest11:20:291
576221180,5sleep31823999cyclictest10:05:173
18236996426,4cyclictest9-21ksoftirqd/011:20:000
95992620,5sleep21823899cyclictest08:00:002
160702620,3sleep316073-21proc_pri10:25:233
18236996028,4cyclictest9-21ksoftirqd/008:30:260
139391600,1ptp4l401ktimersoftd/308:10:023
18236995928,4cyclictest9-21ksoftirqd/007:55:150
18238995825,5cyclictest33-21ksoftirqd/210:15:012
18238995620,12cyclictest33-21ksoftirqd/207:29:592
18236995528,6cyclictest9-21ksoftirqd/010:02:360
18236995526,4cyclictest9-21ksoftirqd/009:40:240
18236995526,3cyclictest9-21ksoftirqd/010:15:130
18236995523,4cyclictest9-21ksoftirqd/010:25:150
18238995424,9cyclictest33-21ksoftirqd/211:05:182
18238995424,9cyclictest33-21ksoftirqd/211:05:182
18238995421,5cyclictest33-21ksoftirqd/208:25:132
18236995426,7cyclictest9-21ksoftirqd/011:28:290
245522530,3sleep2321ktimersoftd/208:30:122
18238995328,16cyclictest33-21ksoftirqd/208:05:192
18238995321,4cyclictest33-21ksoftirqd/211:00:202
248732520,3sleep20-21swapper/209:35:272
18238995215,9cyclictest33-21ksoftirqd/209:25:182
18236995225,4cyclictest9-21ksoftirqd/007:25:260
18236995220,4cyclictest9-21ksoftirqd/010:55:170
139391520,10ptp4l401ktimersoftd/307:14:293
18238995124,5cyclictest33-21ksoftirqd/209:20:182
18238995116,4cyclictest33-21ksoftirqd/212:35:152
18238995116,4cyclictest33-21ksoftirqd/212:35:152
18238995116,10cyclictest33-21ksoftirqd/209:50:162
18237995120,9cyclictest25-21ksoftirqd/107:26:371
1823699514,2cyclictest121rcu_preempt09:20:010
18236995125,6cyclictest9-21ksoftirqd/009:11:180
18236995123,8cyclictest9-21ksoftirqd/008:05:240
18236995121,5cyclictest9-21ksoftirqd/011:55:020
18236995119,3cyclictest9-21ksoftirqd/010:50:210
18236995118,6cyclictest9-21ksoftirqd/011:10:000
18236995118,6cyclictest9-21ksoftirqd/011:10:000
18238995023,9cyclictest33-21ksoftirqd/208:58:002
18238995023,6cyclictest33-21ksoftirqd/210:05:222
1823799503,5cyclictest241ktimersoftd/110:35:011
1823799503,5cyclictest241ktimersoftd/110:25:001
18237995010,6cyclictest25-21ksoftirqd/111:16:381
1823799500,6cyclictest241ktimersoftd/112:05:001
18236995026,8cyclictest9-21ksoftirqd/010:12:560
18236995025,6cyclictest9-21ksoftirqd/009:25:130
18236995019,7cyclictest9-21ksoftirqd/007:25:010
18236995018,6cyclictest9-21ksoftirqd/007:20:010
18236995017,6cyclictest9-21ksoftirqd/011:55:220
18238994927,9cyclictest33-21ksoftirqd/208:40:192
18238994911,5cyclictest33-21ksoftirqd/211:12:202
18238994910,2cyclictest121rcu_preempt10:55:242
1823799492,6cyclictest241ktimersoftd/112:35:231
1823799492,6cyclictest241ktimersoftd/112:35:231
1823799490,7cyclictest241ktimersoftd/111:40:001
1823799490,7cyclictest241ktimersoftd/111:40:001
18236994931,8cyclictest9-21ksoftirqd/012:40:000
18236994931,8cyclictest9-21ksoftirqd/012:40:000
18236994923,6cyclictest9-21ksoftirqd/008:10:290
18236994921,7cyclictest9-21ksoftirqd/010:35:260
18236994921,7cyclictest9-21ksoftirqd/010:35:260
18236994919,6cyclictest9-21ksoftirqd/009:05:190
18236994918,8cyclictest9-21ksoftirqd/007:50:000
18238994821,5cyclictest33-21ksoftirqd/212:15:132
18238994812,5cyclictest33-21ksoftirqd/208:24:522
18238994811,5cyclictest33-21ksoftirqd/209:14:032
1823799484,8cyclictest25-21ksoftirqd/109:55:021
1823799480,6cyclictest241ktimersoftd/107:30:221
18236994830,5cyclictest9-21ksoftirqd/012:00:110
18236994819,4cyclictest9-21ksoftirqd/009:35:140
18236994819,3cyclictest9-21ksoftirqd/012:20:180
1823699481,3cyclictest121rcu_preempt10:40:110
1823899479,4cyclictest33-21ksoftirqd/209:48:482
18238994727,11cyclictest33-21ksoftirqd/212:05:132
18238994718,8cyclictest33-21ksoftirqd/210:50:022
18238994717,4cyclictest33-21ksoftirqd/210:35:222
18238994717,4cyclictest33-21ksoftirqd/210:35:222
18238994710,4cyclictest33-21ksoftirqd/207:36:142
1823799475,7cyclictest25-21ksoftirqd/109:55:241
1823799473,4cyclictest25-21ksoftirqd/109:45:161
1823799473,3cyclictest25-21ksoftirqd/109:40:161
1823799471,5cyclictest0-21swapper/107:50:191
1823799470,6cyclictest241ktimersoftd/112:15:221
18236994723,4cyclictest9-21ksoftirqd/012:12:170
18236994721,3cyclictest9-21ksoftirqd/011:35:130
18236994721,3cyclictest9-21ksoftirqd/011:35:130
144432470,3sleep214448-21missed_timers11:30:202
1823899469,5cyclictest33-21ksoftirqd/208:17:212
1823899468,5cyclictest33-21ksoftirqd/209:00:342
18238994617,4cyclictest33-21ksoftirqd/212:30:252
18238994616,6cyclictest33-21ksoftirqd/210:40:232
18238994612,8cyclictest33-21ksoftirqd/209:30:132
18238994612,4cyclictest33-21ksoftirqd/212:03:432
18238994611,5cyclictest33-21ksoftirqd/212:11:332
1823799465,7cyclictest25-21ksoftirqd/112:25:161
1823799463,7cyclictest241ktimersoftd/107:15:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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