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2026-09-16 - 05:15
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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 rack0slot5.osadl.org (updated Wed Sep 16, 2026 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
373178599826824,2cyclictest69750irq/159-i91520:25:1914
37317959956240,521cyclictest0-21swapper/1120:36:193
3731787995380,535cyclictest0-21swapper/920:28:1915
37317569951913,28cyclictest0-21swapper/022:50:190
373176099509507,2cyclictest3793755-21kworker/1:1+i915-unordered20:28:191
3731756995061,44cyclictest16-21ksoftirqd/000:08:190
373176699501499,2cyclictest3792849-21kworker/3:1+i915-unordered20:36:199
373177799498496,2cyclictest3772853-21kworker/6:1+i915-unordered20:17:1912
3731770994920,492cyclictest0-21swapper/423:10:1910
37317569948624,0cyclictest0-21swapper/023:36:190
37317569947937,0cyclictest0-21swapper/000:16:190
37317909947322,30cyclictest0-21swapper/1023:19:402
373178099472472,0cyclictest3937628-21kworker/7:2+i915-unordered23:17:1913
37317909947119,30cyclictest0-21swapper/1000:23:042
37317569946923,31cyclictest0-21swapper/019:34:430
37317909946718,30cyclictest0-21swapper/1000:31:022
37317909946718,30cyclictest0-21swapper/1000:31:022
37318019946614,30cyclictest0-21swapper/1220:49:434
37317859946512,58cyclictest0-21swapper/819:09:0114
3731780994652,462cyclictest0-21swapper/719:32:1913
37317909946418,30cyclictest0-21swapper/1022:36:192
373177799464433,31cyclictest0-21swapper/600:16:1912
37317569946410,453cyclictest0-21swapper/020:28:190
37318019946212,29cyclictest0-21swapper/1221:58:414
37317669946216,30cyclictest0-21swapper/320:50:199
37317569946214,29cyclictest0-21swapper/023:42:410
373176299461431,30cyclictest0-21swapper/220:26:198
3731801994598,449cyclictest0-21swapper/1219:34:434
373178599458457,1cyclictest69750irq/159-i91523:10:1914
373178599457456,1cyclictest69750irq/159-i91520:31:1914
3731801994556,30cyclictest0-21swapper/1222:42:034
37317669945510,30cyclictest0-21swapper/300:03:199
3731801994543,30cyclictest0-21swapper/1220:44:054
3731795994544,28cyclictest0-21swapper/1123:29:403
3731801994536,29cyclictest0-21swapper/1220:21:414
3731801994535,29cyclictest0-21swapper/1221:15:024
3731801994525,30cyclictest0-21swapper/1223:54:054
3731801994523,30cyclictest0-21swapper/1221:33:044
3731801994523,29cyclictest0-21swapper/1219:20:424
37318139945127,29cyclictest0-21swapper/1519:08:417
3731801994513,29cyclictest0-21swapper/1219:48:434
3731795994512,447cyclictest0-21swapper/1100:17:013
373178099451421,30cyclictest0-21swapper/720:01:1913
37317609945110,30cyclictest0-21swapper/122:27:191
373181399450448,1cyclictest160-21ksoftirqd/1523:17:197
3731795994500,30cyclictest0-21swapper/1119:58:053
37317569944921,29cyclictest0-21swapper/019:13:030
373177799448446,2cyclictest0-21swapper/622:50:1912
373178599447447,0cyclictest69750irq/159-i91521:01:1914
3731760994475,30cyclictest0-21swapper/119:36:191
373180199446444,2cyclictest0-21swapper/1219:42:304
373179599446444,1cyclictest3930473-21kworker/11:0+i915-unordered23:09:413
37317879944624,421cyclictest0-21swapper/922:26:4115
37317879944525,419cyclictest0-21swapper/920:12:0215
37317879944524,420cyclictest0-21swapper/922:50:0315
373178599445444,1cyclictest69750irq/159-i91521:55:1914
373178099445443,2cyclictest1818-21snmpd22:13:3113
373181399444441,2cyclictest3744505-21kworker/u64:11+events_unbound19:32:197
37317879944425,418cyclictest0-21swapper/920:45:0415
37317879944424,419cyclictest0-21swapper/922:34:0315
37317879944424,419cyclictest0-21swapper/921:11:0215
37317879944424,419cyclictest0-21swapper/921:08:0215
37317879944424,419cyclictest0-21swapper/900:31:4215
37317879944424,419cyclictest0-21swapper/900:31:4215
37317879944423,420cyclictest0-21swapper/922:55:4315
37317879944423,420cyclictest0-21swapper/922:43:0615
373176699444441,3cyclictest3828940-21kworker/u64:11+events_unbound21:13:199
37318099944325,417cyclictest0-21swapper/1421:50:196
37318099944325,417cyclictest0-21swapper/1421:50:196
37317959944322,418cyclictest0-21swapper/1121:24:413
373178799443442,1cyclictest0-21swapper/919:42:3015
37317879944324,418cyclictest0-21swapper/923:31:0315
37317879944323,419cyclictest0-21swapper/922:37:0215
37317879944321,421cyclictest0-21swapper/920:35:0415
37317879944321,421cyclictest0-21swapper/920:30:4015
373178599443441,1cyclictest0-21swapper/823:27:1914
373177799443443,0cyclictest0-21swapper/600:08:1912
373179099442440,2cyclictest3723318-21kworker/10:0+i915-unordered20:26:192
37317879944221,420cyclictest0-21swapper/919:32:4115
37317879944220,421cyclictest0-21swapper/923:27:4215
37318019944120,420cyclictest0-21swapper/1219:16:414
37317909944118,0cyclictest0-21swapper/1019:51:062
37317879944120,420cyclictest0-21swapper/919:28:4215
37318019944020,418cyclictest0-21swapper/1219:33:044
373178599440439,1cyclictest69750irq/159-i91521:45:1914
373178599440439,1cyclictest69750irq/159-i91521:45:1914
3731813994390,27cyclictest0-21swapper/1521:30:197
373180199439438,1cyclictest0-21swapper/1220:31:314
37317909943918,418cyclictest0-21swapper/1021:54:012
37317909943918,418cyclictest0-21swapper/1021:54:012
37318019943824,414cyclictest0-21swapper/1219:50:194
37318019943818,418cyclictest0-21swapper/1220:12:404
37317959943818,418cyclictest0-21swapper/1121:46:013
37317959943818,418cyclictest0-21swapper/1121:46:013
37317809943823,414cyclictest0-21swapper/700:13:1913
37317959943716,419cyclictest0-21swapper/1122:11:433
37317909943719,417cyclictest0-21swapper/1020:04:152
373178599437437,0cyclictest69750irq/159-i91521:13:1914
373178099437435,2cyclictest3837233-21kworker/7:2+i915-unordered21:17:1913
37318099943626,409cyclictest0-21swapper/1422:40:196
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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