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2026-07-02 - 20:53
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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 Thu Jul 02, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1563421149,79sleep20-21swapper/206:54:392
14673211360,15sleep1181rcu_preempt06:53:361
16090991045,87cyclictest20192-21apt-get07:08:061
160909910175,20cyclictest2374-21systemd-journal12:27:511
160859910057,16cyclictest20826-21ssh12:25:490
16090999937,51cyclictest0-21swapper/112:02:541
1609099976,79cyclictest23547-21sh10:43:061
1609099971,32cyclictest26819-21diskmemload09:02:521
1609099967,80cyclictest14268-21apt-get10:28:071
1609099967,80cyclictest14268-21apt-get10:28:071
16090999547,41cyclictest9605-21latency_hist09:27:571
1609099949,74cyclictest10176-21apt-get09:28:111
16090999445,37cyclictest0-21swapper/110:42:561
1609099935,79cyclictest0-21swapper/108:33:051
1609099922,61cyclictest27995-21apt-get07:33:131
1609099922,61cyclictest27995-21apt-get07:33:131
16090999171,14cyclictest16077-21cyclictest09:47:551
16090999171,14cyclictest16077-21cyclictest09:47:551
16090999067,15cyclictest2374-21systemd-journal11:29:351
1609099894,70cyclictest0-21swapper/108:08:071
16090998939,42cyclictest0-21swapper/112:18:281
16099998851,12cyclictest181rcu_preempt12:06:212
16099998851,12cyclictest181rcu_preempt12:06:212
1609099884,75cyclictest0-21swapper/108:48:071
1609099884,75cyclictest0-21swapper/107:53:061
16090998836,41cyclictest0-21swapper/110:08:141
16099998729,11cyclictest181rcu_preempt09:38:162
16090998762,17cyclictest27022-21sh11:42:511
16090998731,44cyclictest17260-21/usr/sbin/munin10:33:171
16099998668,12cyclictest29773-21ssh09:07:492
16090998643,36cyclictest831-21cpu09:13:091
1609099863,77cyclictest0-21swapper/111:43:031
1609099863,69cyclictest0-21swapper/108:28:051
16085998659,19cyclictest31609-21latency_hist07:42:540
16085998659,19cyclictest31609-21latency_hist07:42:540
16099998566,9cyclictest0-21swapper/210:12:542
16099998563,14cyclictest19172-21ssh10:35:402
16099998533,11cyclictest181rcu_preempt09:22:512
16090998540,33cyclictest22628-21grep08:53:121
1609099852,75cyclictest0-21swapper/111:23:041
16090998511,65cyclictest8006-21apt-get10:18:171
16085998542,13cyclictest181rcu_preempt09:37:270
16085998534,23cyclictest15-21ksoftirqd/012:02:530
16099998446,9cyclictest181rcu_preempt08:58:032
16090998454,24cyclictest7500-21apt-key10:17:521
1609099843,69cyclictest0-21swapper/111:18:011
1609099843,68cyclictest0-21swapper/108:23:081
1609099842,76cyclictest0-21swapper/112:08:061
16085998442,16cyclictest58-21kcompactd011:37:180
16085998438,13cyclictest181rcu_preempt08:32:110
16085998438,12cyclictest181rcu_preempt12:05:120
16085998438,12cyclictest181rcu_preempt12:05:120
16099998336,9cyclictest181rcu_preempt07:08:322
16090998362,14cyclictest16077-21cyclictest07:02:051
16090998362,14cyclictest16077-21cyclictest07:02:051
1609099835,70cyclictest0-21swapper/107:48:041
16090998342,33cyclictest9656-21ntp_kernel_err11:13:181
1609099833,66cyclictest0-21swapper/107:13:051
16099998257,14cyclictest0-21swapper/210:42:552
16099998236,13cyclictest181rcu_preempt09:08:432
1609099825,59cyclictest17519-21apt-get08:38:061
1609099825,59cyclictest17519-21apt-get08:38:061
16085998262,14cyclictest23782-21diskmemload10:53:160
16085998262,14cyclictest23782-21diskmemload10:53:160
16085998236,12cyclictest181rcu_preempt09:31:570
16099998135,8cyclictest181rcu_preempt07:07:562
16099998135,8cyclictest181rcu_preempt07:07:562
1609099814,72cyclictest0-21swapper/110:53:061
1609099814,72cyclictest0-21swapper/110:53:061
1609099814,71cyclictest0-21swapper/111:53:071
1609099814,71cyclictest0-21swapper/111:53:071
1609099813,68cyclictest0-21swapper/107:43:021
16085998161,13cyclictest16077-21cyclictest07:59:030
16085998131,11cyclictest181rcu_preempt10:38:160
16085998112,50cyclictest23527-21apt-get10:43:140
16099998050,13cyclictest181rcu_preempt12:23:092
16099998044,9cyclictest181rcu_preempt09:48:042
1609099804,65cyclictest9213-21apt-get08:13:041
16090998037,35cyclictest0-21swapper/109:38:191
1609099803,6cyclictest0-21swapper/112:13:041
16090998036,36cyclictest0-21swapper/112:03:251
16090998036,36cyclictest0-21swapper/112:03:251
16085998059,15cyclictest1858-21threads09:13:400
16085998058,13cyclictest13936-21ssh12:13:280
16085998046,16cyclictest181rcu_preempt12:10:070
16085998035,13cyclictest58-21kcompactd011:51:340
1608599802,49cyclictest18361-21apt-get11:28:370
1539928022,39sleep30-21swapper/306:54:363
16099997961,12cyclictest4442-21ntp_kernel_err11:58:182
16099997953,20cyclictest2249-21idleruntime-cro07:52:512
16099997951,20cyclictest10169-21fschecks_time12:08:132
16099997949,13cyclictest181rcu_preempt11:18:492
16090997953,17cyclictest1554-21ssh10:07:541
1609099793,68cyclictest0-21swapper/107:03:081
1609099793,68cyclictest0-21swapper/107:03:081
16090997930,41cyclictest0-21swapper/110:59:561
1609099792,30cyclictest5112-21sh11:06:031
1608599797,55cyclictest30364-21apt-get09:08:110
16085997933,12cyclictest181rcu_preempt11:27:540
16085997932,12cyclictest181rcu_preempt11:42:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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