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2026-08-04 - 18:46
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot7.osadl.org (updated Tue Aug 04, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5705210412,63sleep25732-21/usr/sbin/munin06:51:182
5705210412,63sleep25732-21/usr/sbin/munin06:51:182
308402980,28sleep3451rcuc/312:05:353
6635999712,57cyclictest39-21ksoftirqd/208:37:152
6635999269,14cyclictest30344-21idleruntime-cro11:10:362
513229013,32sleep10-21swapper/106:50:481
513229013,32sleep10-21swapper/106:50:481
6630998972,11cyclictest29750-21fschecks_count09:20:591
6635998820,36cyclictest39-21ksoftirqd/207:14:152
6626998843,32cyclictest5675-21modprobe08:30:360
6626998828,30cyclictest29384-21rm11:07:550
6635998755,8cyclictest181rcu_preempt11:33:182
6635998755,8cyclictest181rcu_preempt11:33:182
6630998723,26cyclictest2690-21seq08:20:431
6626998718,27cyclictest20616-21ssh11:47:300
663599863,59cyclictest16998-21apt-get09:00:512
663599863,59cyclictest16998-21apt-get09:00:512
6635998614,45cyclictest39-21ksoftirqd/208:49:292
6635998612,42cyclictest39-21ksoftirqd/209:54:492
6626998648,17cyclictest28879-21processes12:01:080
6626998621,47cyclictest0-21swapper/009:34:290
6626998618,27cyclictest13923-21ssh10:41:590
6626998617,29cyclictest19061-21rm09:02:240
6626998617,29cyclictest19061-21rm09:02:240
6626998617,28cyclictest4923-21ssh10:27:150
6626998617,28cyclictest4923-21ssh10:27:150
6626998617,28cyclictest26722-21rm11:03:510
64712869,48sleep03093-21kworker/u17:4+flush-179:006:55:370
64712869,48sleep03093-21kworker/u17:4+flush-179:006:55:370
6635998516,43cyclictest39-21ksoftirqd/210:22:142
6630998539,22cyclictest23659-21sendmail10:05:361
6630998539,22cyclictest23659-21sendmail10:05:361
6626998568,11cyclictest14012-21diskmemload09:46:030
6626998568,11cyclictest14012-21diskmemload09:46:030
6626998519,39cyclictest8833-21runrttasks08:39:470
6626998519,28cyclictest21838-21ssh09:06:450
6626998517,26cyclictest20718-21ssh10:53:410
6626998516,34cyclictest16236-21seq08:58:290
6635998458,17cyclictest352-21runrttasks11:25:392
6635998458,17cyclictest352-21runrttasks11:25:392
663599842,58cyclictest32195-21apt-get09:25:522
6626998443,30cyclictest0-21swapper/011:26:080
6626998417,24cyclictest29430-21ssh10:14:420
6626998417,24cyclictest29430-21ssh10:14:420
6626998416,30cyclictest17670-21ssh10:48:250
6626998416,30cyclictest17670-21ssh10:48:250
6630998361,11cyclictest26213-21latency_hist09:15:411
6626998336,18cyclictest23789-21sh10:58:580
6626998336,18cyclictest23789-21sh10:58:580
6626998321,21cyclictest6127-21seq11:23:450
6626998321,21cyclictest6127-21seq11:23:450
6626998320,23cyclictest15343-21ssh11:39:310
6626998318,28cyclictest6712-21rm12:18:530
6626998316,26cyclictest30889-21rm09:22:000
6626998315,28cyclictest27914-21ssh09:17:010
6635998257,19cyclictest18968-21latency_hist07:30:402
6635998257,19cyclictest18968-21latency_hist07:30:402
6635998218,38cyclictest39-21ksoftirqd/212:16:352
6635998211,46cyclictest39-21ksoftirqd/211:37:382
6626998264,12cyclictest1-21systemd10:35:360
6626998220,22cyclictest10827-21ssh09:42:550
6626998217,27cyclictest23524-21ssh11:51:410
6626998217,27cyclictest23524-21ssh11:51:410
6626998216,26cyclictest3167-21seq12:12:170
6626998216,26cyclictest3167-21seq12:12:170
6635998147,8cyclictest181rcu_preempt11:27:322
6630998159,14cyclictest13764-21processes11:36:101
6626998119,23cyclictest26550-21runrttasks10:10:240
6626998119,23cyclictest19266-21ssh09:56:340
6626998117,27cyclictest821-21ssh12:09:030
6626998117,25cyclictest3468-21ssh11:19:380
6626998117,23cyclictest10161-21ssh12:25:160
6626998117,23cyclictest10161-21ssh12:25:160
6626998116,28cyclictest7546-21rm09:37:000
6626998116,24cyclictest25291-21rm09:13:030
6626998116,22cyclictest11154-21taskset10:37:330
6626998116,22cyclictest11154-21taskset10:37:330
6626998116,22cyclictest11154-21taskset10:37:330
6626998116,20cyclictest7172-21seq08:34:080
6626998115,25cyclictest29976-21taskset08:04:490
6626998114,27cyclictest31918-21ssh10:18:260
663599809,61cyclictest13434-21apt-get07:15:522
6635998056,7cyclictest181rcu_preempt11:46:062
6635998019,37cyclictest39-21ksoftirqd/212:02:282
6626998018,21cyclictest26403-21ssh11:56:260
6626998017,21cyclictest28404-21seq08:00:250
6626998017,21cyclictest28404-21seq08:00:250
6626998016,26cyclictest1808-21rm09:27:330
6626998016,26cyclictest16473-21runrttasks09:52:010
6626998016,23cyclictest32076-21ssh11:12:080
6635997943,20cyclictest23892-21fw_packets09:11:022
6630997961,11cyclictest30251-21kworker/u17:1-rpciod11:21:151
6630997961,11cyclictest30251-21kworker/u17:1-rpciod11:21:151
6626997935,7cyclictest181rcu_preempt11:41:200
6626997916,24cyclictest8100-21seq07:00:130
6626997916,22cyclictest23502-21seq07:44:460
6635997863,9cyclictest20373-21awk07:35:362
6635997861,11cyclictest12700-21ssh09:46:082
6635997861,11cyclictest12700-21ssh09:46:082
6635997857,14cyclictest14012-21diskmemload10:25:592
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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