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2026-06-30 - 22:50
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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 Jun 30, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18539910430,35cyclictest0-21swapper/008:58:190
421210211,63sleep0499-21cstates06:53:200
18649910074,20cyclictest4509-21sshd10:38:312
100329911,57sleep21049-21mailstats06:53:422
1859999868,21cyclictest544-21cron08:27:591
1859999868,20cyclictest25053-21latency_hist08:08:031
1859999548,14cyclictest181rcu_preempt11:53:201
185999942,62cyclictest10902-21ssh11:43:281
1859999359,23cyclictest0-21swapper/109:38:371
130529318,46sleep30-21swapper/306:53:483
1864999114,44cyclictest39-21ksoftirqd/211:58:032
1859999145,26cyclictest0-21swapper/110:09:341
1864999018,42cyclictest39-21ksoftirqd/211:18:352
1859999056,14cyclictest181rcu_preempt10:56:491
1853999018,42cyclictest18681-21/usr/sbin/munin09:13:270
1864998966,8cyclictest181rcu_preempt11:44:352
1853998970,14cyclictest20294-21switchtime11:58:340
1853998970,13cyclictest22027-21latency_hist11:08:010
1864998722,33cyclictest39-21ksoftirqd/207:38:302
1853998765,15cyclictest24841-21sh09:23:340
1864998618,37cyclictest39-21ksoftirqd/209:58:182
1864998618,37cyclictest39-21ksoftirqd/209:58:182
1864998564,15cyclictest5623-21latency_hist08:48:022
1864998550,8cyclictest181rcu_preempt09:46:472
1864998550,8cyclictest181rcu_preempt09:46:472
1859998544,10cyclictest181rcu_preempt10:18:341
1853998554,22cyclictest2446-21ls08:38:170
1864998427,24cyclictest39-21ksoftirqd/209:13:212
1864998415,44cyclictest39-21ksoftirqd/210:33:022
1864998413,41cyclictest39-21ksoftirqd/210:48:292
1859998461,8cyclictest181rcu_preempt12:00:101
9692837,52sleep11000-21ps06:53:411
1864998320,31cyclictest39-21ksoftirqd/207:43:252
1864998318,33cyclictest39-21ksoftirqd/211:51:332
1859998361,15cyclictest1841-21cyclictest11:13:221
1859998341,14cyclictest181rcu_preempt10:58:081
1859998337,9cyclictest181rcu_preempt07:08:341
1859998334,10cyclictest181rcu_preempt09:49:411
1853998318,38cyclictest0-21swapper/011:28:280
1864998242,10cyclictest0-21swapper/212:08:182
1859998264,13cyclictest4220-21apt-key10:38:041
1859998257,8cyclictest181rcu_preempt09:55:271
1859998236,31cyclictest13991-21fschecks_count07:33:221
186899813,40cyclictest30570-21chrt10:28:033
186499818,45cyclictest39-21ksoftirqd/210:37:112
1864998145,8cyclictest181rcu_preempt08:38:222
1864998139,11cyclictest0-21swapper/208:48:172
1859998149,11cyclictest181rcu_preempt11:52:591
185999813,22cyclictest28212-21awk09:28:381
1853998158,16cyclictest30350-21idleruntime-cro10:27:590
185399815,65cyclictest27131-21apt-get09:28:130
1864998014,44cyclictest39-21ksoftirqd/207:48:172
1859998063,10cyclictest467-21latency_hist09:38:021
1859998063,10cyclictest467-21latency_hist09:38:021
1859998061,12cyclictest30339-21kworker/u17:3-rpciod10:28:381
1859998058,16cyclictest21374-21fschecks_count09:18:211
1859998058,16cyclictest21374-21fschecks_count09:18:211
1859998042,10cyclictest21986-21ssh11:08:011
1853998015,28cyclictest13529-21apt-get11:48:100
1853998013,32cyclictest0-21swapper/010:58:160
1853998010,27cyclictest352-21runrttasks11:43:160
185399799,27cyclictest0-21swapper/008:18:100
1853997960,13cyclictest5704-21latency_hist08:48:030
1853997951,10cyclictest4851-21ssh09:43:520
1853997951,10cyclictest4851-21ssh09:43:520
185399794,40cyclictest0-21swapper/010:48:130
185399790,42cyclictest2115-21rm09:39:350
1859997859,12cyclictest12574-21ssh10:51:471
1859997847,10cyclictest181rcu_preempt11:26:211
1859997846,9cyclictest181rcu_preempt08:13:371
1859997834,8cyclictest181rcu_preempt08:08:231
1859997831,11cyclictest181rcu_preempt07:13:231
1859997829,13cyclictest0-21swapper/107:18:271
1864997751,7cyclictest181rcu_preempt09:53:222
1864997730,14cyclictest0-21swapper/210:19:522
1864997724,24cyclictest39-21ksoftirqd/208:28:242
1864997717,26cyclictest39-21ksoftirqd/207:28:172
1864997717,26cyclictest39-21ksoftirqd/207:28:172
1864997713,35cyclictest39-21ksoftirqd/207:23:432
1859997738,13cyclictest181rcu_preempt08:43:091
1853997757,14cyclictest988-21latency_hist10:33:020
1853997721,19cyclictest0-21swapper/008:08:190
1853997720,32cyclictest746-21/usr/sbin/munin08:33:250
185399771,44cyclictest5157-21ssh10:39:240
1864997658,13cyclictest7979-21mailstats07:13:332
1864997641,7cyclictest181rcu_preempt10:53:362
1864997611,39cyclictest39-21ksoftirqd/212:16:412
1859997657,12cyclictest300-21rs:main1
1859997657,12cyclictest300-21rs:main1
1859997648,8cyclictest181rcu_preempt08:28:311
1853997618,20cyclictest27081-21chrt12:10:050
186899753,31cyclictest12527-21chrt09:58:023
1864997556,14cyclictest15437-21sh09:08:232
1864997556,14cyclictest15437-21sh09:08:232
1864997538,7cyclictest181rcu_preempt10:25:242
1864997518,34cyclictest39-21ksoftirqd/210:08:032
1864997518,34cyclictest39-21ksoftirqd/210:08:032
1864997516,34cyclictest39-21ksoftirqd/209:33:172
1864997516,34cyclictest39-21ksoftirqd/209:33:172
1859997545,9cyclictest181rcu_preempt09:07:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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