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2026-05-18 - 20:28
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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 rackfslot7.osadl.org (updated Mon May 18, 2026 12:46:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3083431991000,99cyclictest0-21swapper/507:45:125
3083429997617,39cyclictest3093248-21ntp_states07:25:203
3083429997616,59cyclictest3130637-21latency_hist08:35:023
3083429997517,39cyclictest3100196-21apt-get07:40:123
3083429997515,39cyclictest1587419-21kworker/u32:0+flush-8:008:20:083
3083429997335,19cyclictest3159517-21ntpq09:25:173
3083429997232,39cyclictest0-21swapper/308:49:443
3083429997030,39cyclictest0-21swapper/308:08:233
3083429997010,60cyclictest3249964-21lpstat12:10:173
3083429996930,19cyclictest3168603-21taskset09:42:203
3083429996729,19cyclictest0-21swapper/310:24:323
3083429996728,39cyclictest0-21swapper/311:47:543
3083429996626,39cyclictest1086-21runrttasks11:12:103
3083429996626,39cyclictest1086-21runrttasks11:12:093
308342999646,39cyclictest3210463-21kworker/u32:4+events_unbound12:05:043
308342999624,39cyclictest3155456-21unin-run09:20:013
3083429995820,38cyclictest0-21swapper/310:14:573
3083429995719,38cyclictest0-21swapper/307:12:563
3083429995719,38cyclictest0-21swapper/307:12:553
3083429995617,39cyclictest3261134-21ntp_states12:30:203
3083429995617,20cyclictest1086-21runrttasks08:52:193
3083429995535,19cyclictest31576712sleep309:22:103
3083429995517,19cyclictest3151281-21sed09:10:203
3083429995516,38cyclictest3089168-21/usr/sbin/munin07:20:023
3083429995419,35cyclictest0-21swapper/311:36:163
3083429995419,35cyclictest0-21swapper/310:35:013
3083429995419,35cyclictest0-21swapper/310:15:043
3083429995419,35cyclictest0-21swapper/308:37:443
3083429995419,15cyclictest0-21swapper/309:51:513
3083429995416,19cyclictest3105599-21munin-run07:50:023
3083429995416,19cyclictest1-21systemd12:00:023
3083429995414,39cyclictest0-21swapper/308:43:193
3083429995414,39cyclictest0-21swapper/308:10:123
3083429995333,19cyclictest0-21swapper/311:29:523
3083429995319,15cyclictest0-21swapper/311:21:263
3083429995319,15cyclictest0-21swapper/311:21:253
3083429995319,15cyclictest0-21swapper/309:38:243
3083429995314,39cyclictest0-21swapper/312:17:323
3083429995314,39cyclictest0-21swapper/307:59:433
3083429995314,39cyclictest0-21swapper/307:20:273
3083429995313,39cyclictest0-21swapper/312:28:523
3083429995252,0cyclictest0-21swapper/311:03:033
3083429995234,18cyclictest0-21swapper/309:07:443
3083429995233,19cyclictest0-21swapper/312:37:153
3083429995233,19cyclictest0-21swapper/312:03:413
3083429995233,19cyclictest0-21swapper/311:51:453
3083429995233,19cyclictest0-21swapper/310:56:403
3083429995233,19cyclictest0-21swapper/310:54:163
3083429995233,19cyclictest0-21swapper/310:33:443
3083429995233,19cyclictest0-21swapper/310:26:443
3083429995233,19cyclictest0-21swapper/310:07:363
3083429995233,19cyclictest0-21swapper/308:29:443
3083429995233,19cyclictest0-21swapper/307:51:163
3083429995232,19cyclictest0-21swapper/311:16:033
3083429995232,19cyclictest0-21swapper/309:31:243
3083429995213,39cyclictest0-21swapper/312:23:283
3083429995213,39cyclictest0-21swapper/311:32:283
3083429995213,39cyclictest0-21swapper/311:32:283
3083429995213,39cyclictest0-21swapper/310:01:593
3083429995213,39cyclictest0-21swapper/308:01:463
3083429995213,39cyclictest0-21swapper/307:30:093
3083429995212,39cyclictest3142587-21hddtemp_smartct08:55:163
3083433995132,19cyclictest0-21swapper/710:25:167
308343099519,19cyclictest0-21swapper/408:35:174
3083429995133,18cyclictest0-21swapper/311:09:283
3083429995133,18cyclictest0-21swapper/310:45:433
3083429995133,18cyclictest0-21swapper/309:58:563
3083429995133,18cyclictest0-21swapper/309:46:403
3083429995112,0cyclictest3083425-21cyclictest10:41:203
3083427995133,18cyclictest0-21swapper/112:05:181
3083427995113,38cyclictest0-21swapper/108:50:131
3083427995112,19cyclictest0-21swapper/107:35:171
3083431995012,19cyclictest0-21swapper/511:05:175
3083429995032,18cyclictest0-21swapper/311:40:313
3083429995031,19cyclictest0-21swapper/309:00:573
3083431994931,18cyclictest0-21swapper/511:20:155
3083431994931,18cyclictest0-21swapper/511:20:145
308342999499,39cyclictest0-21swapper/308:18:113
3083429994931,18cyclictest0-21swapper/307:38:423
308343399478,39cyclictest0-21swapper/712:35:177
308343299478,39cyclictest0-21swapper/611:05:176
3083431994729,18cyclictest0-21swapper/509:10:165
308342799479,19cyclictest0-21swapper/112:20:171
308343199458,18cyclictest0-21swapper/510:25:165
308342799453,19cyclictest0-21swapper/111:55:161
308343399434,39cyclictest0-21swapper/711:35:167
308343199433,39cyclictest0-21swapper/509:25:155
308343399424,19cyclictest0-21swapper/709:25:147
308343199423,39cyclictest0-21swapper/509:45:175
308342799414,18cyclictest0-21swapper/111:05:161
308343099404,1cyclictest0-21swapper/412:31:054
308343099402,38cyclictest0-21swapper/409:28:424
308343099401,38cyclictest90750irq/69-eno6-TxRx-710:07:544
308342799400,39cyclictest0-21swapper/111:38:371
308343399390,20cyclictest861rcuc/710:10:157
308343399390,20cyclictest0-21swapper/712:00:157
308343199390,39cyclictest0-21swapper/510:55:205
308343199390,20cyclictest0-21swapper/508:20:155
308343099393,0cyclictest0-21swapper/409:23:344
308343099392,37cyclictest0-21swapper/407:55:104
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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