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2026-06-11 - 11:17
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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 Jun 11, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7137991264,46cyclictest32537-21ssh23:14:480
7137991264,46cyclictest32537-21ssh23:14:480
7137991174,35cyclictest24406-21sh21:14:340
71379911157,48cyclictest14990-21diskmemload23:49:190
71379911139,65cyclictest0-21swapper/023:29:470
7137991083,30cyclictest21400-21ssh21:09:310
71379910644,55cyclictest3373-21latency_hist20:24:220
7137991054,30cyclictest16606-21/usr/sbin/munin21:01:370
7137991053,30cyclictest352-21runrttasks21:31:130
7137991053,23cyclictest9888-21/usr/sbin/munin21:44:290
71379910452,45cyclictest0-21swapper/000:09:550
7137991044,29cyclictest10531-21ssh00:24:560
7137991043,36cyclictest30526-21awk00:04:470
7137991043,36cyclictest30526-21awk00:04:470
7137991034,34cyclictest7691-21chrt22:34:310
7137991033,27cyclictest352-21runrttasks22:29:030
7137991033,21cyclictest26174-21apt-get23:05:060
71379910323,73cyclictest2985-21ssh23:19:310
71379910243,53cyclictest27891-21acpi22:14:290
7137991023,28cyclictest15890-21/usr/sbin/munin21:54:400
7137991023,28cyclictest15890-21/usr/sbin/munin21:54:400
7137991022,19cyclictest30588-21apt-get22:19:380
7137991022,19cyclictest30588-21apt-get22:19:380
7137991013,33cyclictest12466-21apt-key19:14:230
7137991013,27cyclictest12538-21runrttasks22:42:040
7137991013,27cyclictest12538-21runrttasks22:42:040
7137991012,28cyclictest24690-21/usr/sbin/munin23:54:510
7137991012,28cyclictest24690-21/usr/sbin/munin23:54:510
7137991005,25cyclictest27397-21sh21:19:340
7137991004,35cyclictest352-21runrttasks23:09:430
7137991004,35cyclictest352-21runrttasks23:09:430
7137991003,27cyclictest768-21latency_hist21:29:230
7137991002,21cyclictest10391-21apt-get20:44:310
7137991002,19cyclictest7896-21/usr/sbin/munin21:39:560
713799994,31cyclictest352-21runrttasks23:51:580
713799993,30cyclictest7735-21latency18:59:440
713799984,30cyclictest24131-21sh23:00:070
713799984,23cyclictest29817-21ssh00:04:220
713799983,32cyclictest16050-21/usr/sbin/munin19:24:530
713799983,31cyclictest4956-21fschecks_time22:29:400
713799982,21cyclictest25978-21/usr/sbin/munin19:54:290
7137999818,24cyclictest7369-21fschecks_count20:34:430
713799974,31cyclictest8920-21munin-node19:04:310
713799973,42cyclictest27591-21/usr/sbin/munin19:59:430
713799973,32cyclictest29573-21kernelversion20:04:440
713799973,31cyclictest15750-21ntp_states23:40:160
713799973,31cyclictest15750-21ntp_states23:40:160
713799972,30cyclictest1514-21latency_hist20:19:230
713799972,19cyclictest31473-21wc20:09:510
713799963,29cyclictest17753-21unixbench_multi22:49:560
713799963,29cyclictest17753-21unixbench_multi22:49:560
713799963,21cyclictest13539-21latency_hist20:54:230
713799963,13cyclictest13023-21ssh21:49:360
713799962,37cyclictest14203-21/usr/sbin/munin20:54:520
713799962,34cyclictest352-21runrttasks22:12:520
713799962,33cyclictest6641-21sshd00:19:350
713799962,33cyclictest6641-21sshd00:19:350
713799962,26cyclictest22246-21modprobe19:44:200
65602968,61sleep06641-21awk18:55:060
593129613,52sleep25959-21/usr/sbin/munin18:54:482
713799954,30cyclictest3983-21cut20:25:370
713799953,30cyclictest14649-21cron23:39:190
713799952,30cyclictest22878-21latency_hist22:59:240
7137999520,23cyclictest6921-21/usr/sbin/munin23:24:550
7137999520,23cyclictest6921-21/usr/sbin/munin23:24:550
713799944,27cyclictest3504-21/usr/sbin/munin00:14:450
713799943,32cyclictest22187-21fschecks_time22:04:420
713799943,32cyclictest10325-21cat20:44:230
713799943,32cyclictest10325-21cat20:44:230
713799943,31cyclictest12831-21/usr/sbin/munin19:15:090
713799943,29cyclictest18883-21/usr/sbin/munin21:59:560
713799943,29cyclictest18629-21fschecks_count21:04:420
713799943,26cyclictest16572-21latency_hist22:49:220
7156999369,9cyclictest181rcu_preempt21:19:432
713799933,37cyclictest25894-21apt-key19:54:240
713799933,37cyclictest25894-21apt-key19:54:240
713799933,33cyclictest19888-21grep19:34:520
713799933,32cyclictest22689-21fschecks_count19:44:410
713799933,32cyclictest22689-21fschecks_count19:44:410
713799933,19cyclictest5541-21find20:29:300
713799922,30cyclictest15033-21grep19:19:510
713799922,22cyclictest5007-21ssh21:34:570
713799913,32cyclictest544-21cron19:34:200
715699903,52cyclictest39-21ksoftirqd/221:08:162
7156998962,10cyclictest181rcu_preempt22:48:582
7156998862,19cyclictest782-21fschecks_count00:09:392
7151998860,18cyclictest25773-21apt-key19:54:241
7151998860,18cyclictest25773-21apt-key19:54:241
7156998753,25cyclictest31672-21fschecks_time22:20:262
7156998753,25cyclictest31672-21fschecks_time22:20:262
7156998656,22cyclictest15924-21latency_hist19:24:232
7156998545,13cyclictest181rcu_preempt23:05:542
7156998450,14cyclictest181rcu_preempt23:29:542
7156998448,13cyclictest58-21kcompactd021:52:092
715699843,56cyclictest39-21ksoftirqd/219:39:552
7156998358,8cyclictest181rcu_preempt23:54:362
7156998358,8cyclictest181rcu_preempt23:54:362
7156998354,12cyclictest181rcu_preempt00:23:242
7156998354,12cyclictest181rcu_preempt00:23:242
7156998352,9cyclictest181rcu_preempt19:14:492
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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