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2025-07-12 - 12:52
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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 rackaslot8.osadl.org (updated Sat Jul 12, 2025 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
145302315282,21sleep20-21swapper/219:06:122
146062261227,22sleep10-21swapper/119:06:561
126312261225,21sleep00-21swapper/019:05:030
147932259227,20sleep30-21swapper/319:09:233
266142600,0sleep10-21swapper/120:45:141
25172590,0sleep00-21swapper/023:47:130
314392550,1sleep30-21swapper/321:50:243
114452500,0sleep20-21swapper/223:54:072
91922390,0sleep10-21swapper/121:12:171
320022220,0sleep00-21swapper/000:09:160
314672200,0sleep10-21swapper/120:55:151
102152180,1sleep00-21swapper/021:35:220
1494999173,9cyclictest29772-21sh00:06:531
201022160,0sleep20-21swapper/221:42:542
162602150,0sleep10-21swapper/123:57:071
1494999150,2cyclictest16388-21ssh22:48:511
1494999143,6cyclictest29741-11brltty21:05:541
14958991311,1cyclictest34-21ksoftirqd/319:15:023
1494999132,6cyclictest4701-21cat19:55:181
1494999132,6cyclictest30654-21snmpd21:45:541
1494999131,9cyclictest30654-21snmpd00:37:291
1494999131,9cyclictest19397-21perf20:30:011
1494999131,9cyclictest0-21swapper/123:05:411
277442120,0sleep10-21swapper/100:32:511
1495899129,2cyclictest34-21ksoftirqd/300:20:003
1494999122,6cyclictest32645-21sh21:51:181
1494999122,5cyclictest17483-21ssh22:25:511
1494999120,3cyclictest7833-21ssh23:50:381
1494999120,3cyclictest3016-21ssh23:02:061
1494999120,3cyclictest27849-21ssh22:34:031
1494999120,3cyclictest22148-21chrt22:52:441
1494999120,3cyclictest20874-21ssh22:05:291
1494999120,2cyclictest2995-21ssh22:39:261
1494999120,2cyclictest2663-21rm23:47:211
1495899119,1cyclictest34-21ksoftirqd/320:00:003
1495899118,2cyclictest34-21ksoftirqd/323:20:003
1495899118,2cyclictest34-21ksoftirqd/322:20:013
1495899118,2cyclictest34-21ksoftirqd/322:10:013
1495899118,2cyclictest34-21ksoftirqd/300:00:003
1495899110,3cyclictest19982-21systemd-journal00:29:293
1494999113,6cyclictest19982-21systemd-journal19:47:001
1494999111,8cyclictest19982-21systemd-journal23:10:391
1494999110,7cyclictest6002-21ssh23:26:361
1494999110,7cyclictest5094-21diskmemload22:10:231
1494999110,7cyclictest15925-21expr20:20:191
1494999110,6cyclictest18209-21ssh21:19:071
1494999110,3cyclictest31666-21taskset21:28:201
1494999110,3cyclictest23306-21expr19:25:151
1494999110,3cyclictest19455-21ssh21:20:041
1494999110,2cyclictest869-21sh23:23:321
1494999110,2cyclictest5937-21ssh22:40:281
1494999110,2cyclictest22975-21ssh00:01:451
1494999110,2cyclictest11974-21ssh23:30:331
1494999110,1cyclictest4101-21ssh00:12:121
1495899109,1cyclictest34-21ksoftirqd/320:55:003
1495899109,1cyclictest34-21ksoftirqd/320:10:003
1495899109,1cyclictest34-21ksoftirqd/319:40:013
1495899107,2cyclictest34-21ksoftirqd/321:24:593
1495899107,2cyclictest34-21ksoftirqd/319:15:013
1494999103,6cyclictest0-21swapper/121:44:421
1494999102,7cyclictest8295-21head00:15:221
1494999101,8cyclictest21099-21apt-get23:15:141
1494999101,7cyclictest19982-21systemd-journal22:17:261
1494999100,9cyclictest29198-21apt-get19:40:001
1494999100,9cyclictest17120-21apt19:15:021
1494999100,6cyclictest30654-21snmpd21:57:561
1494999100,6cyclictest29754-21ssh22:58:161
1494999100,6cyclictest22173-21seq19:20:521
1494999100,6cyclictest20270-21chrt19:19:571
1494999100,3cyclictest3912-21ssh21:31:031
1494999100,3cyclictest2521-21chrt21:01:001
1494999100,3cyclictest12218-21ssh22:22:351
1494999100,2cyclictest30374-21chrt20:53:141
1494999100,2cyclictest14559-21ssh00:20:241
1494999100,2cyclictest10371-21ssh21:35:251
1494999100,1cyclictest23575-21apt-get23:40:011
1494999100,1cyclictest12287-21rm22:00:151
149589998,1cyclictest34-21ksoftirqd/322:45:023
149589998,1cyclictest34-21ksoftirqd/300:15:003
149589997,2cyclictest34-21ksoftirqd/323:50:163
149589997,2cyclictest34-21ksoftirqd/319:35:013
149589997,1cyclictest34-21ksoftirqd/321:00:003
149589994,3cyclictest19982-21systemd-journal22:54:233
149589993,4cyclictest34-21ksoftirqd/322:21:073
149589992,5cyclictest34-21ksoftirqd/323:38:103
149499992,6cyclictest30654-21snmpd20:13:011
149499990,2cyclictest29750-21apt-get19:40:011
149499990,2cyclictest25684-21cat19:30:151
149499990,2cyclictest21216-21taskset20:30:241
149499990,1cyclictest77-21kswapd000:25:131
149499990,0cyclictest0-21swapper/123:38:351
149459994,3cyclictest19982-21systemd-journal21:34:150
149459994,3cyclictest19982-21systemd-journal20:44:110
149459994,3cyclictest19982-21systemd-journal20:44:110
28633280,0sleep20-21swapper/221:25:282
28249280,0sleep00-21swapper/022:10:430
149589987,1cyclictest34-21ksoftirqd/322:50:023
149589987,1cyclictest34-21ksoftirqd/321:35:013
149589987,1cyclictest34-21ksoftirqd/300:00:003
149589987,1cyclictest331rcuc/320:40:013
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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