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2026-09-24 - 01:30
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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 Wed Sep 23, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
12141211313,74sleep012144-21cron07:08:370
12141211313,74sleep012144-21cron07:08:370
12301991123,82cyclictest13056-21apt-get12:33:522
123019910380,15cyclictest1-21systemd11:59:472
1230199982,84cyclictest2312-21apt-get09:33:562
1228199979,76cyclictest13136-21ssh12:34:000
12281999346,8cyclictest181rcu_preempt10:53:580
12281999346,8cyclictest181rcu_preempt10:53:580
12281999125,57cyclictest707-21ssh10:24:010
1230199893,67cyclictest343-21runrttasks11:49:032
12286998971,12cyclictest13917-21ssh12:34:241
12281998759,8cyclictest181rcu_preempt11:20:090
12281998730,12cyclictest181rcu_preempt10:43:590
12281998730,12cyclictest181rcu_preempt10:43:590
12301998663,15cyclictest200-21systemd-journal09:51:472
12286998666,14cyclictest21843-21sh11:53:591
12286998666,14cyclictest21843-21sh11:53:591
1228199864,61cyclictest18710-21apt-get11:48:520
12281998565,14cyclictest25213-21rm09:18:370
12281998565,14cyclictest25213-21rm09:18:370
12281998556,21cyclictest7069-21kernelversion10:34:040
1230799845,59cyclictest0-21swapper/310:23:523
12301998456,22cyclictest29617-21unixbench_singl09:24:152
12301998452,19cyclictest181rcu_preempt11:44:132
12281998465,13cyclictest358-21ntpd11:09:180
12281998443,11cyclictest181rcu_preempt09:43:380
12301998361,12cyclictest0-21swapper/211:38:392
12301998336,13cyclictest181rcu_preempt12:33:412
12286998367,10cyclictest15976-21ssh09:55:481
12286998367,10cyclictest15976-21ssh09:55:481
12281998348,10cyclictest181rcu_preempt12:20:460
12301998259,16cyclictest22177-21sh11:54:052
12301998259,16cyclictest22177-21sh11:54:052
12301998247,10cyclictest181rcu_preempt09:53:502
12301998247,10cyclictest181rcu_preempt09:53:502
12301998233,9cyclictest181rcu_preempt08:39:112
12286998212,37cyclictest15912-21fschecks_count10:49:021
12281998246,8cyclictest181rcu_preempt08:34:010
12281998240,8cyclictest181rcu_preempt10:22:020
12301998136,14cyclictest181rcu_preempt12:14:002
12286998164,11cyclictest8410-21ssh09:43:541
12286998164,11cyclictest8410-21ssh09:43:541
12281998158,18cyclictest12271-21cyclictest07:08:540
12281998142,8cyclictest181rcu_preempt11:46:070
12281998140,9cyclictest0-21swapper/007:23:390
12301998051,20cyclictest26585-21latency_hist10:13:402
12301998050,18cyclictest27107-21latency_hist11:08:402
12301998050,14cyclictest6441-21ssh12:23:072
1230199804,63cyclictest630-21apt-get10:24:012
12301998044,11cyclictest181rcu_preempt10:58:522
12301998041,8cyclictest181rcu_preempt10:01:322
12301998011,37cyclictest9324-21latency_hist11:33:392
12301998011,37cyclictest9324-21latency_hist11:33:392
12281998047,8cyclictest181rcu_preempt10:49:170
12281998038,22cyclictest0-21swapper/008:25:500
12281998038,11cyclictest0-21swapper/007:49:160
12281998036,8cyclictest181rcu_preempt11:18:410
12301997918,36cyclictest0-21swapper/212:24:122
12286997964,10cyclictest12463-21kworker/u17:1-nfsiod10:09:071
12286997960,12cyclictest200-21systemd-journal10:15:461
12286997960,12cyclictest200-21systemd-journal10:15:461
12286997947,21cyclictest13243-21grep07:09:121
12281997953,19cyclictest32103-21kworker/u18:1+events_unbound11:58:370
12281997953,19cyclictest32103-21kworker/u18:1+events_unbound11:58:370
12301997855,15cyclictest13262-21ntp_offset10:44:062
12301997855,15cyclictest13262-21ntp_offset10:44:062
12301997815,24cyclictest0-21swapper/212:05:502
12286997861,10cyclictest19200-21diskmemload10:43:161
1228199788,40cyclictest15-21ksoftirqd/009:04:020
12281997855,15cyclictest343-21runrttasks09:56:150
12281997855,15cyclictest343-21runrttasks09:56:150
12281997844,11cyclictest181rcu_preempt09:19:180
12281997843,11cyclictest181rcu_preempt08:18:540
12281997837,12cyclictest181rcu_preempt11:39:120
12301997748,9cyclictest181rcu_preempt07:08:532
12301997738,13cyclictest181rcu_preempt10:28:512
12301997734,17cyclictest181rcu_preempt11:28:042
12286997761,10cyclictest14823-21fschecks_time08:54:021
12286997761,10cyclictest14823-21fschecks_time08:54:021
12281997755,14cyclictest19200-21diskmemload09:59:160
12281997743,11cyclictest181rcu_preempt10:31:520
12301997653,9cyclictest39-21ksoftirqd/208:28:582
12301997653,9cyclictest39-21ksoftirqd/208:28:582
12301997652,8cyclictest181rcu_preempt09:40:412
12301997644,25cyclictest16711-21unixbench_singl10:49:182
12301997643,14cyclictest181rcu_preempt09:13:402
12301997620,11cyclictest0-21swapper/208:58:522
12281997642,8cyclictest181rcu_preempt12:32:020
12281997631,18cyclictest181rcu_preempt11:27:090
12307997518,40cyclictest0-21swapper/310:03:583
12301997551,15cyclictest17686-21latency_hist07:23:412
12301997540,12cyclictest181rcu_preempt07:33:402
12301997536,8cyclictest181rcu_preempt09:03:502
12286997558,11cyclictest200-21systemd-journal12:23:231
12286997517,19cyclictest21786-21ps07:34:101
12286997517,19cyclictest21786-21ps07:34:101
12281997542,8cyclictest181rcu_preempt08:58:560
12281997540,10cyclictest181rcu_preempt08:30:480
12281997540,10cyclictest181rcu_preempt08:30:480
12281997537,13cyclictest12271-21cyclictest09:08:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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