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2025-11-30 - 14:23
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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 Sun Nov 30, 2025 00:45:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
137191235168,23phc2sys0-21swapper/319:05:393
240862205172,22sleep10-21swapper/119:08:501
240482200167,22sleep00-21swapper/019:08:210
239692200167,22sleep20-21swapper/219:07:222
714921820,6sleep32447199cyclictest19:40:203
714921820,6sleep32447199cyclictest19:40:203
2866421300,6sleep12446999cyclictest22:40:151
2417628363,11sleep30-21swapper/319:10:003
24470995212,5cyclictest33-21ksoftirqd/220:42:282
2447099521,16cyclictest24141-21vmstat21:20:322
2447099521,12cyclictest30110-21irqrtprio19:20:192
2447099512,16cyclictest223-21systemd-journal20:25:582
2447099491,24cyclictest9752-21/usr/sbin/munin00:15:112
136991480,1ptp4l401ktimersoftd/323:17:093
318192470,4sleep031818-21wc21:40:000
24470994610,5cyclictest33-21ksoftirqd/220:35:062
2447099460,8cyclictest9983-21netstat19:45:242
2447099451,16cyclictest20437-21/usr/sbin/munin22:20:282
2447099450,16cyclictest30721-21/usr/sbin/munin21:35:232
136991440,0ptp4l401ktimersoftd/322:33:153
136991440,0ptp4l401ktimersoftd/320:10:033
2447099431,12cyclictest2257-21gnome-shell23:05:252
2447099430,13cyclictest20950-21apt20:10:152
136991430,0ptp4l401ktimersoftd/321:50:523
2447099421,7cyclictest2257-21gnome-shell00:23:582
132691420,6getstats2447199cyclictest21:42:113
2447099411,10cyclictest30781-21egrep22:45:152
2447099410,7cyclictest21590-21diskstats22:25:152
24469994035,3cyclictest25-21ksoftirqd/121:00:001
24468993933,3cyclictest2907-21grep20:40:000
136991390,0ptp4l401ktimersoftd/321:00:493
136991390,0ptp4l401ktimersoftd/319:29:563
2447099387,29cyclictest5967-21kworker/2:219:50:262
24471993730,5cyclictest41-21ksoftirqd/300:02:473
2447099371,7cyclictest22675-21perl23:35:152
2447099371,16cyclictest2902-21awk19:30:252
2447099370,16cyclictest32147-21/usr/sbin/munin21:40:312
24468993731,4cyclictest9-21ksoftirqd/023:46:080
24471993631,3cyclictest41-21ksoftirqd/300:10:023
24471993630,4cyclictest41-21ksoftirqd/322:29:533
24471993630,4cyclictest41-21ksoftirqd/321:16:203
2447099365,30cyclictest5967-21kworker/2:220:55:482
2447099360,34cyclictest22926-21kworker/2:123:55:192
24469993630,4cyclictest25-21ksoftirqd/123:51:311
24469993630,4cyclictest25-21ksoftirqd/119:11:371
24469993629,5cyclictest25-21ksoftirqd/120:19:531
24469993629,5cyclictest25-21ksoftirqd/100:38:251
24468993630,4cyclictest9-21ksoftirqd/023:38:500
59298350,5rtkit-daemon22558-21mailstats22:25:240
24471993530,3cyclictest41-21ksoftirqd/323:09:593
24471993528,5cyclictest41-21ksoftirqd/323:12:293
2447099354,29cyclictest31998-21kworker/2:022:58:442
24470993529,4cyclictest33-21ksoftirqd/223:28:012
24470993529,4cyclictest33-21ksoftirqd/223:17:262
24470993529,4cyclictest33-21ksoftirqd/220:21:022
24470993529,4cyclictest33-21ksoftirqd/200:26:072
24469993530,3cyclictest481-21rs:main1
24469993530,3cyclictest31443-21latency_hist19:25:011
24469993529,4cyclictest25-21ksoftirqd/123:43:461
24469993529,4cyclictest25-21ksoftirqd/123:22:391
24469993529,4cyclictest25-21ksoftirqd/121:00:141
24469993529,4cyclictest25-21ksoftirqd/119:54:311
59298340,1rtkit-daemon0-21swapper/023:30:020
24471993428,4cyclictest41-21ksoftirqd/322:38:243
24471993428,4cyclictest41-21ksoftirqd/300:35:553
2447099345,28cyclictest31998-21kworker/2:022:50:202
2447099343,30cyclictest5967-21kworker/2:221:02:472
24470993428,4cyclictest33-21ksoftirqd/223:13:212
24470993428,4cyclictest33-21ksoftirqd/220:05:352
24470993427,4cyclictest33-21ksoftirqd/219:14:082
2447099341,12cyclictest31998-21kworker/2:021:50:152
24469993429,3cyclictest25-21ksoftirqd/100:25:001
24469993428,4cyclictest25-21ksoftirqd/123:19:461
24469993428,4cyclictest25-21ksoftirqd/122:52:541
24469993428,4cyclictest25-21ksoftirqd/121:44:501
24469993428,4cyclictest25-21ksoftirqd/121:22:111
24469993428,4cyclictest25-21ksoftirqd/119:33:161
24469993428,4cyclictest25-21ksoftirqd/119:16:591
24469993428,4cyclictest25-21ksoftirqd/100:16:551
24469993427,5cyclictest25-21ksoftirqd/122:45:531
24469993427,5cyclictest25-21ksoftirqd/119:48:451
24468993428,4cyclictest9-21ksoftirqd/021:03:010
24468993427,5cyclictest9-21ksoftirqd/000:06:270
136991340,0ptp4l401ktimersoftd/320:25:203
24471993328,3cyclictest41-21ksoftirqd/323:56:393
24471993327,4cyclictest41-21ksoftirqd/322:48:143
24471993327,4cyclictest41-21ksoftirqd/322:20:013
24471993327,4cyclictest41-21ksoftirqd/322:20:013
24471993327,4cyclictest41-21ksoftirqd/322:13:083
24471993327,4cyclictest41-21ksoftirqd/321:29:403
24471993327,4cyclictest41-21ksoftirqd/320:19:203
24471993327,4cyclictest41-21ksoftirqd/320:04:033
24471993327,4cyclictest41-21ksoftirqd/319:39:403
24471993326,5cyclictest41-21ksoftirqd/319:58:343
2447099333,29cyclictest5967-21kworker/2:221:06:312
24470993328,3cyclictest33-21ksoftirqd/223:54:532
24470993327,4cyclictest33-21ksoftirqd/223:24:202
24470993327,4cyclictest33-21ksoftirqd/223:00:492
24470993327,4cyclictest33-21ksoftirqd/222:37:062
24470993327,4cyclictest33-21ksoftirqd/220:33:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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