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2026-05-17 - 03:29
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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 rack8slot2.osadl.org (updated Sun May 17, 2026 00:44:21)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
392629399313295,10cyclictest80-21hwrng21:55:473
3926290991821,6cyclictest0-21swapper/021:10:220
3926290991531,125cyclictest0-21swapper/021:06:150
392629099146102,36cyclictest171ktimers/023:10:240
39262929913777,58cyclictest381ktimers/223:42:012
3926290991368,119cyclictest9750irq/115-8000000.ethernet-tx022:40:010
39262929913037,58cyclictest0-21swapper/223:01:372
39262929913015,12cyclictest4084631-21lockfile-create00:20:002
3926293991291,108cyclictest0-21swapper/321:35:483
39262939912611,70cyclictest4035618-21apt-get23:00:253
392629199125114,6cyclictest80-21hwrng22:07:031
3926290991244,89cyclictest3949344-21apt-get20:25:160
3926290991244,89cyclictest3949344-21apt-get20:25:160
392629299121111,5cyclictest80-21hwrng23:19:452
392629199119111,5cyclictest80-21hwrng20:17:291
392629199119111,5cyclictest80-21hwrng20:17:291
3926290991191,108cyclictest0-21swapper/020:35:130
3926290991191,108cyclictest0-21swapper/020:35:130
3926290991161,95cyclictest4024551-21ntpq22:41:190
3926292991144,19cyclictest3928347-21/usr/sbin/munin19:15:352
3926292991144,19cyclictest3928347-21/usr/sbin/munin19:15:352
392629299114107,4cyclictest80-21hwrng23:26:562
392629399113100,5cyclictest4031802-21cat22:55:013
3926292991113,11cyclictest1-21systemd23:33:042
3926292991113,11cyclictest1-21systemd23:33:042
3926293991101,80cyclictest10550irq/205-8000000.ethernet-rx022:27:083
392629199110101,5cyclictest80-21hwrng21:25:041
392629099110105,3cyclictest80-21hwrng22:29:350
3926292991073,25cyclictest4096631-21cat00:36:232
39262929910698,5cyclictest80-21hwrng22:41:522
3926291991052,37cyclictest3968178-21latency_hist21:15:021
39262909910571,18cyclictest171ktimers/000:28:140
3926290991050,12cyclictest3995657-21kworker/u16:15+xprtiod22:20:020
39262909910491,10cyclictest10550irq/205-8000000.ethernet-rx022:00:130
39262929910326,63cyclictest0-21swapper/221:40:162
39262919910396,4cyclictest80-21hwrng23:04:241
3926293991021,72cyclictest4057258-21ntpq23:36:083
39262919910288,8cyclictest80-21hwrng00:02:461
39262919910237,34cyclictest4075692-21ssh00:05:591
39262919910237,34cyclictest4075692-21ssh00:05:591
3926290991024,71cyclictest4086029-21ntpq00:20:570
3926290991022,78cyclictest0-21swapper/019:30:500
39262929910125,53cyclictest381ktimers/220:30:512
39262929910115,14cyclictest3926289-21cyclictest22:15:352
3926291991015,23cyclictest3988715-21ssh21:46:281
39262919910141,54cyclictest0-21swapper/100:30:321
39262909910159,35cyclictest171ktimers/023:05:230
39262909910159,35cyclictest171ktimers/023:05:230
3926290991011,68cyclictest4010919-21ssh22:20:220
3926293991004,8cyclictest3970061-21users21:16:183
3926293991004,8cyclictest3970061-21users21:16:183
39262929910039,43cyclictest381ktimers/221:15:202
39262929910039,43cyclictest381ktimers/221:15:202
39262919910050,9cyclictest0-21swapper/122:10:371
392629399991,81cyclictest4092553-21ntpq00:30:523
3926292999872,20cyclictest3975544-21kworker/u16:7+rpciod22:00:162
392629299985,70cyclictest4010840-21apt-get22:20:132
3926292999825,49cyclictest4016071-21kworker/u16:12+xprtiod22:50:542
3926292999825,49cyclictest4016071-21kworker/u16:12+xprtiod22:50:542
3926291999873,14cyclictest0-21swapper/123:35:151
3926291999832,13cyclictest0-21swapper/121:50:281
3926293999789,5cyclictest80-21hwrng22:15:153
392629299977,10cyclictest3980764-21ntpq21:35:572
3926291999765,20cyclictest0-21swapper/122:40:171
3926291999744,18cyclictest0-21swapper/122:50:551
3926291999744,18cyclictest0-21swapper/122:50:551
3926291999730,30cyclictest3958455-21kworker/u16:5+rpciod21:00:021
3926291999683,8cyclictest80-21hwrng23:56:371
3926291999611,41cyclictest4077714-21/usr/sbin/munin00:10:431
3926291999611,41cyclictest4077714-21/usr/sbin/munin00:10:431
3926291999610,39cyclictest4062100-21sh23:45:301
392629099961,71cyclictest0-21swapper/023:16:410
392629399952,68cyclictest0-21swapper/323:45:303
3926291999543,12cyclictest0-21swapper/119:35:351
3926291999519,23cyclictest3944845-21kworker/u16:7+rpciod20:40:011
3926291999519,23cyclictest3944845-21kworker/u16:7+rpciod20:40:011
3926290999564,27cyclictest0-21swapper/000:10:230
3926290999564,27cyclictest0-21swapper/000:10:230
392629099952,81cyclictest3978897-21921:33:550
3926293999480,10cyclictest80-21hwrng22:06:023
3926292999427,64cyclictest4029334-21gltestperf22:51:222
392629199947,46cyclictest3968355-21sh21:15:161
392629199947,46cyclictest3968355-21sh21:15:161
3926291999412,31cyclictest4084633-21sendmail-msp00:20:031
3926291999356,31cyclictest0-21swapper/122:55:171
3926290999352,23cyclictest10550irq/205-8000000.ethernet-rx023:02:120
392629099931,5cyclictest3934127-21kworker/u16:6+xprtiod19:40:020
3926293999283,4cyclictest10550irq/205-8000000.ethernet-rx000:20:123
3926293999270,16cyclictest0-21swapper/321:55:143
3926291999256,31cyclictest0-21swapper/119:50:411
3926291999230,18cyclictest10550irq/205-8000000.ethernet-rx019:50:011
3926291999230,18cyclictest10550irq/205-8000000.ethernet-rx019:50:011
3926293999169,19cyclictest0-21swapper/300:10:023
3926293999169,19cyclictest0-21swapper/300:10:023
3926292999181,6cyclictest80-21hwrng00:06:522
3926292999181,6cyclictest80-21hwrng00:06:522
392629299917,37cyclictest4001644-21ssh22:05:582
3926292999118,23cyclictest4023325-21kworker/u16:30+rpciod23:00:032
3926291999140,18cyclictest0-21swapper/120:40:381
3926291999140,18cyclictest0-21swapper/120:40:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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