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2026-05-19 - 19:40
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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 rackdslot4.osadl.org (updated Tue May 19, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591205170,23phc2sys0-21swapper/307:07:493
104052202168,23sleep10-21swapper/107:08:541
102022201169,21sleep20-21swapper/207:06:222
102982199167,21sleep00-21swapper/007:07:370
1384911350,1ptp4l25281-21/usr/sbin/munin12:00:233
138491850,1ptp4l1928-21ls11:10:253
138491630,1ptp4l401ktimersoftd/310:20:253
10785996259,2cyclictest231rcuc/111:27:251
59682610,6sleep31078799cyclictest09:10:143
17112600,2sleep30-21swapper/307:55:203
10785996057,2cyclictest231rcuc/111:37:161
138491510,1ptp4l401ktimersoftd/312:11:003
10785994918,3cyclictest25-21ksoftirqd/108:23:201
10785994818,8cyclictest25-21ksoftirqd/111:11:581
10785994743,2cyclictest231rcuc/107:13:231
10785994717,4cyclictest25-21ksoftirqd/110:56:291
10785994618,8cyclictest25-21ksoftirqd/110:12:481
10785994618,7cyclictest25-21ksoftirqd/108:29:181
1078599460,5cyclictest25-21ksoftirqd/109:00:241
10785994538,4cyclictest5272-21cron09:10:001
10785994517,3cyclictest25-21ksoftirqd/111:01:551
191652440,2sleep20-21swapper/208:30:212
10786994438,3cyclictest33-21ksoftirqd/210:39:592
10785994442,1cyclictest231rcuc/108:46:501
10785994442,1cyclictest231rcuc/108:00:461
1385914332,5phc2sys0-21swapper/307:10:003
10786994338,3cyclictest33-21ksoftirqd/211:20:002
1078799420,40cyclictest14890-21sshd11:39:033
10786994236,3cyclictest33-21ksoftirqd/212:20:002
138491410,0ptp4l401ktimersoftd/309:45:233
138491410,0ptp4l401ktimersoftd/309:45:233
138491410,0ptp4l401ktimersoftd/309:18:093
138491410,0ptp4l401ktimersoftd/309:18:093
10787994136,3cyclictest10788-21fschecks_count11:30:143
10786994130,9cyclictest33-21ksoftirqd/211:50:242
10786994130,9cyclictest33-21ksoftirqd/211:50:242
10786994036,3cyclictest33-21ksoftirqd/209:05:002
10786994034,3cyclictest33-21ksoftirqd/208:55:012
1078699402,2cyclictest33-21ksoftirqd/212:25:242
10786993933,4cyclictest33-21ksoftirqd/208:40:102
10786993933,3cyclictest33-21ksoftirqd/211:15:002
10786993933,3cyclictest33-21ksoftirqd/207:15:192
10785993936,2cyclictest231rcuc/110:20:301
138491380,0ptp4l401ktimersoftd/308:30:063
10787993830,5cyclictest41-21ksoftirqd/311:55:003
10787993830,5cyclictest41-21ksoftirqd/311:55:003
10786993834,2cyclictest33-21ksoftirqd/210:35:002
10786993833,3cyclictest33-21ksoftirqd/212:15:002
10786993833,3cyclictest33-21ksoftirqd/209:20:012
10786993833,3cyclictest33-21ksoftirqd/209:20:002
10786993832,4cyclictest33-21ksoftirqd/208:03:262
10786993827,9cyclictest33-21ksoftirqd/212:35:242
10785993835,2cyclictest231rcuc/109:59:191
10785993818,9cyclictest25-21ksoftirqd/111:15:271
10787993730,4cyclictest41-21ksoftirqd/310:36:473
10787993730,4cyclictest41-21ksoftirqd/309:31:043
1078699376,3cyclictest121rcu_preempt12:00:012
10786993732,3cyclictest33-21ksoftirqd/210:50:132
10786993732,3cyclictest33-21ksoftirqd/210:50:132
10786993732,3cyclictest33-21ksoftirqd/210:20:002
10786993732,3cyclictest33-21ksoftirqd/207:50:192
10786993731,4cyclictest33-21ksoftirqd/208:07:032
10786993730,4cyclictest33-21ksoftirqd/209:31:072
10786993726,9cyclictest33-21ksoftirqd/208:10:202
10786993726,9cyclictest33-21ksoftirqd/207:40:182
1078699370,2cyclictest121rcu_preempt10:25:252
10785993734,2cyclictest231rcuc/108:14:011
10785993732,4cyclictest25-21ksoftirqd/108:33:321
10784993731,4cyclictest9-21ksoftirqd/012:34:110
10784993731,4cyclictest9-21ksoftirqd/010:56:060
10787993631,3cyclictest41-21ksoftirqd/308:21:323
10787993630,4cyclictest41-21ksoftirqd/309:23:223
10787993630,4cyclictest41-21ksoftirqd/308:50:563
10787993630,4cyclictest41-21ksoftirqd/308:09:013
10787993630,4cyclictest41-21ksoftirqd/308:01:553
10787993629,4cyclictest41-21ksoftirqd/312:18:013
10787993629,4cyclictest41-21ksoftirqd/307:20:073
10786993632,3cyclictest33-21ksoftirqd/210:05:252
10786993631,3cyclictest33-21ksoftirqd/211:30:002
10786993631,3cyclictest33-21ksoftirqd/210:25:002
10786993631,3cyclictest33-21ksoftirqd/210:05:012
10786993631,3cyclictest33-21ksoftirqd/209:45:132
10786993631,3cyclictest33-21ksoftirqd/209:45:132
10786993630,4cyclictest33-21ksoftirqd/209:29:032
10786993630,4cyclictest33-21ksoftirqd/208:17:312
10786993630,3cyclictest33-21ksoftirqd/209:40:002
10786993630,3cyclictest33-21ksoftirqd/208:26:222
10786993629,5cyclictest33-21ksoftirqd/210:55:522
10786993625,9cyclictest33-21ksoftirqd/208:55:292
1078599363,5cyclictest25-21ksoftirqd/109:28:351
10785993631,3cyclictest25-21ksoftirqd/107:30:111
1078599362,4cyclictest25-21ksoftirqd/107:42:161
10784993630,4cyclictest9-21ksoftirqd/010:10:490
10784993630,4cyclictest9-21ksoftirqd/009:46:220
10784993630,4cyclictest9-21ksoftirqd/009:46:220
10784993630,4cyclictest9-21ksoftirqd/009:39:400
10784993630,4cyclictest9-21ksoftirqd/009:04:490
10784993630,4cyclictest9-21ksoftirqd/008:56:470
10784993630,4cyclictest9-21ksoftirqd/008:39:590
10784993630,4cyclictest9-21ksoftirqd/007:27:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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