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2026-06-27 - 02:03
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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 Fri Jun 26, 2026 12:45:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2449421820,6sleep2564199cyclictest07:25:502
767621810,6sleep1564099cyclictest07:12:181
3191221800,6sleep2564199cyclictest07:33:212
769521640,3sleep3564299cyclictest07:12:323
1501221610,6sleep0563999cyclictest07:30:070
5291210962,15sleep00-21swapper/007:09:170
5022210762,16sleep30-21swapper/307:06:003
5050210563,10sleep10-21swapper/107:06:221
650621040,3sleep3401ktimersoftd/307:33:313
500629167,16sleep20-21swapper/207:05:462
81422880,4sleep38146-21unixbench_multi08:30:263
289902790,7sleep1564099cyclictest07:26:311
76182760,7sleep2564199cyclictest07:11:472
139391700,1ptp4l391rcuc/308:45:243
77252680,3sleep07716-21execl07:12:410
323472660,3sleep10-21swapper/107:34:061
256442630,4sleep0563999cyclictest12:30:210
173882620,5sleep313265-21spawn07:25:003
173882620,5sleep313265-21spawn07:25:003
238402610,6sleep323848-21spawn07:25:363
107722580,3sleep00-21swapper/007:35:080
564299564,16cyclictest28243-21cat12:35:253
564299564,16cyclictest28243-21cat12:35:243
154572550,2sleep20-21swapper/207:40:152
139391550,1ptp4l391rcuc/309:45:243
564299541,16cyclictest0-21swapper/307:35:043
564299533,17cyclictest18517-21netstat07:45:233
564299532,16cyclictest26618-21latency_hist12:35:003
164212520,5sleep01212-21spawn07:26:130
564299515,17cyclictest17480-21sed11:05:273
564299513,10cyclictest3833-21cat09:30:183
564299502,16cyclictest29825-21sshd11:31:213
564299492,16cyclictest0-21swapper/310:27:353
564299474,15cyclictest26628-21cat09:10:193
564299473,16cyclictest15278-21cat09:55:173
564299472,42cyclictest25417-21ls09:09:593
564299463,9cyclictest2518-21gnome-shell10:32:593
564299462,15cyclictest21972-21sendmail_mailst11:15:253
564299455,8cyclictest16046-21memory07:40:203
134391450,7getstats564299cyclictest08:17:063
57898430,10rtkit-daemon0-21swapper/108:50:101
564299433,9cyclictest6524-21ps09:35:213
139391430,1ptp4l401ktimersoftd/310:19:553
139391430,0ptp4l401ktimersoftd/310:11:013
139391430,0ptp4l401ktimersoftd/309:18:593
139391430,0ptp4l401ktimersoftd/309:00:183
57898420,3rtkit-daemon17115-21apt-get10:00:121
564299425,15cyclictest3808-21taskset08:24:413
564299423,7cyclictest2502-21/usr/sbin/munin10:35:233
139391420,0ptp4l401ktimersoftd/311:13:283
564299413,35cyclictest10343-21fstime07:19:323
5640994034,3cyclictest31099-21sh10:30:001
564299393,7cyclictest5111-21memory08:25:203
564299393,14cyclictest31908-21ls09:20:243
564299392,14cyclictest19483-21apt-get10:05:113
5641993933,3cyclictest33-21ksoftirqd/211:00:002
57898380,2rtkit-daemon0-21swapper/108:00:201
564299381,16cyclictest0-21swapper/308:40:173
5641993832,3cyclictest33-21ksoftirqd/212:40:002
5641993832,3cyclictest33-21ksoftirqd/212:40:002
5640993833,3cyclictest25-21ksoftirqd/107:35:081
5640993833,2cyclictest25-21ksoftirqd/111:20:011
5640993832,3cyclictest25-21ksoftirqd/108:45:201
564299374,16cyclictest15938-21/usr/sbin/munin08:50:243
5642993731,3cyclictest41-21ksoftirqd/310:45:123
564299372,15cyclictest22108-21/usr/sbin/munin07:55:253
564299371,7cyclictest27895-21ls08:05:193
5641993731,3cyclictest33-21ksoftirqd/207:20:002
5640993732,3cyclictest25-21ksoftirqd/109:35:001
5640993732,2cyclictest25-21ksoftirqd/107:25:011
5640993732,2cyclictest25-21ksoftirqd/107:25:011
5640993731,4cyclictest25-21ksoftirqd/112:22:111
5640993731,4cyclictest25-21ksoftirqd/107:52:261
5642993630,4cyclictest41-21ksoftirqd/310:05:003
564299362,14cyclictest9948-21/usr/sbin/munin12:00:143
564299362,14cyclictest21814-21/usr/sbin/munin12:25:143
5641993631,3cyclictest33-21ksoftirqd/207:35:082
5641993630,4cyclictest33-21ksoftirqd/209:05:562
5641993624,10cyclictest33-21ksoftirqd/209:03:512
564199361,2cyclictest121rcu_preempt07:45:222
5640993631,3cyclictest25-21ksoftirqd/110:44:101
5640993631,3cyclictest25-21ksoftirqd/110:20:171
5640993631,3cyclictest25-21ksoftirqd/110:05:171
5640993631,3cyclictest25-21ksoftirqd/109:00:101
5640993630,4cyclictest25-21ksoftirqd/112:15:341
5640993630,4cyclictest25-21ksoftirqd/110:12:431
5640993630,4cyclictest25-21ksoftirqd/109:05:261
5640993630,4cyclictest25-21ksoftirqd/108:36:181
5640993630,4cyclictest25-21ksoftirqd/108:33:331
5640993630,4cyclictest25-21ksoftirqd/108:07:051
5640993628,5cyclictest25-21ksoftirqd/112:35:041
5640993628,5cyclictest25-21ksoftirqd/112:35:041
5642993530,3cyclictest41-21ksoftirqd/309:45:003
5642993529,4cyclictest41-21ksoftirqd/311:29:233
564299352,7cyclictest31615-21ps11:35:253
5641993529,4cyclictest33-21ksoftirqd/212:32:032
5641993529,4cyclictest33-21ksoftirqd/212:00:262
5641993529,4cyclictest33-21ksoftirqd/211:10:562
5641993529,4cyclictest33-21ksoftirqd/209:18:512
5641993529,3cyclictest33-21ksoftirqd/210:17:372
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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