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2026-01-11 - 10:40
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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 Sun Jan 11, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
974721318,103sleep019676-21snmpd19:08:430
9010212518,44sleep19016-21ntp_states19:05:011
9962991193,77cyclictest23375-40mandb23:59:261
9962991183,83cyclictest13760-21apt-get22:49:391
9962991123,75cyclictest26388-21apt-get00:04:371
9962991089,76cyclictest32021-21apt-get20:14:501
8642210810,66sleep28653-21/usr/sbin/munin19:04:502
99629910257,38cyclictest28636-21sh22:19:571
99579910159,13cyclictest181rcu_preempt22:31:370
2308621010,6sleep20-21swapper/223:04:432
9957999976,17cyclictest23295-21latency_hist19:49:260
9962999733,57cyclictest0-21swapper/119:59:231
9957999663,11cyclictest181rcu_preempt23:04:110
9962999452,37cyclictest9945-21cyclictest00:12:101
9957999473,14cyclictest9945-21cyclictest00:21:530
996299934,34cyclictest9889-21sort20:46:171
996299914,34cyclictest9185-21date20:44:251
9962999141,44cyclictest9188-21idleruntime-cro21:49:231
9962999141,44cyclictest9188-21idleruntime-cro21:49:231
996299913,37cyclictest2815-21acpi20:24:341
9962999133,37cyclictest181rcu_preempt22:05:011
996299903,40cyclictest11368-21ssh23:39:251
996299903,40cyclictest11368-21ssh23:39:251
996299903,37cyclictest352-21runrttasks00:28:221
996299903,37cyclictest352-21runrttasks00:28:221
996299903,33cyclictest2451-21latency_hist23:24:261
996299902,34cyclictest2287-21timerandwakeup22:29:581
9957999072,12cyclictest18285-21sh21:09:560
9957999072,12cyclictest18285-21sh21:09:560
996299894,38cyclictest17519-21wc22:54:561
9962998938,42cyclictest0-21swapper/119:59:471
9962998936,47cyclictest0-21swapper/123:09:581
996299893,35cyclictest6277-21latency_hist00:24:251
996299893,34cyclictest13688-21sed22:49:271
9957998966,17cyclictest12504-21ssh23:40:010
9957998962,19cyclictest15913-21latency_hist21:04:260
9957998937,21cyclictest29281-21kworker/u18:2-events_unbound23:29:580
9966998871,10cyclictest0-21swapper/221:00:022
9966998870,9cyclictest0-21swapper/220:10:372
9966998870,9cyclictest0-21swapper/220:10:372
996299884,35cyclictest28314-21/usr/sbin/munin20:04:561
996299884,35cyclictest16555-21grep21:04:561
996299884,31cyclictest352-21runrttasks00:17:131
996299883,36cyclictest12084-21unixbench_singl20:50:001
996299883,30cyclictest17406-21grep23:49:251
9962998832,49cyclictest298-21in:imuxsock21:23:241
9966998772,8cyclictest0-21swapper/200:14:442
996299874,33cyclictest21664-21/usr/sbin/munin22:09:521
996299874,30cyclictest13255-21/usr/sbin/munin21:54:561
996299874,30cyclictest13255-21/usr/sbin/munin21:54:561
996299873,37cyclictest5393-21ssh23:29:261
996299873,37cyclictest5393-21ssh23:29:261
996299873,36cyclictest29851-21grep23:14:591
996299873,36cyclictest20343-21latency22:59:481
996299873,35cyclictest25193-21latency22:14:501
996299873,35cyclictest25193-21latency22:14:501
996299873,33cyclictest18409-21awk21:09:571
996299873,33cyclictest18409-21awk21:09:571
9962998731,49cyclictest0-21swapper/120:59:241
9957998752,16cyclictest181rcu_preempt23:12:340
997399863,60cyclictest26952-21chrt00:04:373
9966998668,14cyclictest9945-21cyclictest21:36:152
9966998661,11cyclictest181rcu_preempt21:24:152
996299864,33cyclictest2137-21tail20:20:001
996299863,38cyclictest22878-21/usr/sbin/munin23:04:421
996299863,32cyclictest5762-21latency_hist20:34:231
996299863,32cyclictest5589-21/usr/sbin/munin23:29:491
996299862,31cyclictest26577-21apt-config00:04:251
996299862,31cyclictest26577-21apt-config00:04:251
9957998669,8cyclictest0-21swapper/020:34:270
9957998630,20cyclictest9945-21cyclictest20:19:410
9966998550,13cyclictest181rcu_preempt23:24:462
9966998550,13cyclictest181rcu_preempt23:24:462
9962998534,43cyclictest0-21swapper/123:39:401
996299853,36cyclictest17008-21acpi19:29:341
996299853,33cyclictest352-21runrttasks22:36:201
996299853,32cyclictest29775-21/usr/sbin/munin21:29:471
996299852,35cyclictest7370-21latency_hist20:39:261
9957998564,8cyclictest181rcu_preempt23:36:100
9957998564,8cyclictest181rcu_preempt23:36:100
9966998447,8cyclictest181rcu_preempt23:10:342
9966998439,13cyclictest181rcu_preempt21:49:552
996299844,33cyclictest15668-21fschecks_time19:24:451
996299844,32cyclictest352-21runrttasks21:39:471
996299843,36cyclictest11310-21sshd19:12:261
996299843,34cyclictest31495-21cut22:24:561
996299843,34cyclictest31495-21cut22:24:561
996299843,33cyclictest20960-21sh21:14:441
996299843,31cyclictest14568-21fschecks_count20:59:461
996299842,35cyclictest19428-21runrttasks23:51:581
996299842,35cyclictest19428-21runrttasks23:51:581
996299842,33cyclictest20900-21mailstats19:39:571
996299842,30cyclictest14186-21cut19:19:471
996299842,30cyclictest14186-21cut19:19:471
9957998463,14cyclictest58-21kcompactd020:16:090
9962998355,19cyclictest16663-21unixbench_singl22:00:011
9962998339,38cyclictest17326-21diskmemload22:39:421
996299833,34cyclictest22833-21head19:45:001
996299833,34cyclictest12557-21latency19:14:521
996299833,26cyclictest9841-21fschecks_time00:29:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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