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2026-08-18 - 14:36
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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 Tue Aug 18, 2026 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11706214511,37sleep011709-21apt-get19:05:010
13329991083,36cyclictest32231-21runrttasks23:10:191
13329991083,36cyclictest32231-21runrttasks23:10:191
133419910538,13cyclictest0-21swapper/219:20:102
13341991053,62cyclictest15688-21apt-get20:55:022
133299910535,35cyclictest0-21swapper/100:29:501
13329991032,26cyclictest11366-21seq22:36:591
13329991022,31cyclictest20422-21sh23:43:561
13329991013,31cyclictest19965-21/usr/sbin/munin22:00:151
133299910041,34cyclictest353-21runrttasks23:07:371
208882980,6sleep30-21swapper/321:10:023
13329999854,37cyclictest297-21in:imuxsock20:09:481
1332999973,72cyclictest24471-21ssh23:50:061
1332999973,55cyclictest10854-21ssh00:20:051
1332999973,31cyclictest14321-21seq23:34:221
1332999944,64cyclictest0-21swapper/123:39:481
1332999944,64cyclictest0-21swapper/123:39:481
13329999348,38cyclictest19569-21switchtime19:25:251
13329999348,38cyclictest19569-21switchtime19:25:251
13329999250,36cyclictest28186-21sh23:04:491
1248129221,33sleep10-21swapper/119:05:351
13341999170,15cyclictest19270-21sh21:58:542
13341999170,15cyclictest19270-21sh21:58:542
13329999149,35cyclictest29300-21systemd-run22:14:501
13329999149,35cyclictest29300-21systemd-run22:14:501
1332999912,27cyclictest82372ssh22:31:581
1332999912,27cyclictest82372ssh22:31:581
1332999903,47cyclictest13844-21apt-get20:50:011
1334199892,56cyclictest22791-21apt-get22:05:032
13286998860,18cyclictest968-21sh21:30:030
1328699883,61cyclictest15-21ksoftirqd/022:00:260
13341998767,14cyclictest15148-21munin-node23:10:252
13341998767,14cyclictest15148-21munin-node23:10:252
1334199872,69cyclictest30684-21diskmemload23:59:512
1332999873,8cyclictest0-21swapper/123:45:001
1332999873,6cyclictest0-21swapper/122:45:001
1332999873,65cyclictest13047-21apt-get19:10:041
1332999872,7cyclictest0-21swapper/121:35:051
1332999872,7cyclictest0-21swapper/121:35:051
1334199865,55cyclictest10590-21apt-get21:45:082
1334199865,55cyclictest10590-21apt-get21:45:082
13341998631,13cyclictest0-21swapper/200:35:262
1332999862,25cyclictest32717-21ssh21:28:551
1328699862,53cyclictest15-21ksoftirqd/022:26:400
13341998564,15cyclictest32663-21latency_hist22:19:522
1332999852,35cyclictest10619-21apt-get20:40:051
1332999852,35cyclictest10619-21apt-get20:40:051
1332999852,28cyclictest3651-21ssh00:08:091
13286998553,25cyclictest13257-21cyclictest00:06:340
13329998463,15cyclictest296-21systemd-logind22:54:481
13329998439,39cyclictest0-21swapper/120:39:481
1332999843,8cyclictest0-21swapper/120:15:021
13329998438,40cyclictest0-21swapper/122:55:161
1332999843,35cyclictest13713-21sh21:50:011
1332999843,33cyclictest17234-21apt-get19:19:591
1332999843,32cyclictest19940-21/usr/sbin/munin21:05:241
1332999842,7cyclictest0-21swapper/119:15:031
1328699846,44cyclictest15-21ksoftirqd/020:44:520
1328699846,44cyclictest15-21ksoftirqd/020:44:520
13286998464,14cyclictest20534-21diskmemload21:46:530
13286998464,14cyclictest20534-21diskmemload21:46:530
13286998460,18cyclictest17377-21latency_hist20:59:510
13286998456,19cyclictest8160-21latency00:15:130
13286998446,14cyclictest181rcu_preempt22:22:290
13286998423,37cyclictest15-21ksoftirqd/023:19:500
13341998365,13cyclictest13824-21sh00:24:522
13329998338,37cyclictest0-21swapper/119:55:061
1332999833,62cyclictest23349-21apt-get22:05:401
1332999832,37cyclictest20987-21ntp_states19:30:191
1332999832,37cyclictest20987-21ntp_states19:30:191
1332999832,30cyclictest3623-21taskset22:25:091
1332999832,12cyclictest15688-21apt-get20:55:111
13341998264,13cyclictest4056-21sh23:17:092
13341998263,14cyclictest2828-21sh22:24:092
13341998252,10cyclictest181rcu_preempt20:39:512
1332999823,30cyclictest30675-21/usr/sbin/munin20:00:181
1332999823,27cyclictest6354-21ssh00:12:071
1332999823,27cyclictest12308-21/usr/sbin/munin20:45:051
1332999823,27cyclictest12308-21/usr/sbin/munin20:45:051
1332999822,38cyclictest17561-21apt-get21:00:121
1332999822,38cyclictest17561-21apt-get21:00:121
13286998259,16cyclictest19778-21latency_hist21:59:510
13286998259,16cyclictest19778-21latency_hist21:59:510
13286998211,42cyclictest15-21ksoftirqd/021:07:560
13341998161,14cyclictest16594-21latency_hist21:54:502
1332999813,38cyclictest28779-21/usr/sbin/munin23:57:011
1332999813,37cyclictest20919-21ssh00:35:241
1332999813,36cyclictest1810-21/usr/sbin/munin20:10:261
1332999813,36cyclictest1810-21/usr/sbin/munin20:10:261
1332999813,35cyclictest28259-21/usr/sbin/munin21:20:271
1332999813,34cyclictest7661-21rm00:14:571
1332999813,33cyclictest8602-21ssh23:25:041
1332999813,29cyclictest30453-21/usr/sbin/munin22:15:231
1332999812,29cyclictest878-21ntpq22:20:181
1332999812,25cyclictest8499-21sshd20:32:091
1328699816,45cyclictest15-21ksoftirqd/019:49:420
13286998160,14cyclictest22057-21latency_hist22:54:510
13286998158,16cyclictest299-21rs:main0
13286998158,16cyclictest299-21rs:main0
1328699815,39cyclictest15-21ksoftirqd/000:36:330
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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