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2026-05-24 - 23:47
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Sun May 24, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
100379911725,13cyclictest0-21swapper/007:00:350
100379911448,59cyclictest32118-21acpi08:05:420
100379911445,58cyclictest0-21swapper/007:25:340
100509910551,47cyclictest8921-21timerandwakeup12:21:062
100379910553,46cyclictest5192-21ssh09:33:340
100379910538,60cyclictest0-21swapper/011:35:540
10037991053,41cyclictest22052-21fschecks_count10:55:530
100379910438,59cyclictest10211-21/usr/sbin/munin07:00:460
100379910433,8cyclictest0-21swapper/011:55:590
100379910426,8cyclictest0-21swapper/011:45:340
10037991034,45cyclictest27040-21/usr/sbin/munin07:50:580
100379910336,8cyclictest0-21swapper/007:56:070
100379910328,11cyclictest0-21swapper/012:11:070
295421020,5sleep22921-21ssh12:11:062
100379910235,8cyclictest0-21swapper/011:11:080
10037991023,34cyclictest23965-21fschecks_count09:10:530
10037991023,34cyclictest23965-21fschecks_count09:10:530
100379910230,64cyclictest0-21swapper/010:15:140
977521016,16sleep10-21swapper/106:58:581
100379910137,54cyclictest0-21swapper/010:45:520
10037991013,33cyclictest11175-21/usr/sbin/munin08:40:540
100379910126,11cyclictest0-21swapper/012:25:530
100379910120,19cyclictest0-21swapper/010:35:470
100509910042,9cyclictest0-21swapper/210:31:062
10037991004,33cyclictest3868-21acpi10:25:410
10037991004,33cyclictest3868-21acpi10:25:410
10037991003,33cyclictest10900-21latency_hist12:25:340
10037991003,32cyclictest24780-21/usr/sbin/munin11:01:040
1005099996,40cyclictest24352-21/usr/sbin/munin10:05:552
1005099993,36cyclictest24071-21fschecks_time07:40:542
1004199993,65cyclictest32121-21apt-get08:05:531
1003799994,13cyclictest0-21swapper/011:16:160
10037999934,57cyclictest0-21swapper/010:30:400
1003799993,35cyclictest352-21runrttasks08:35:520
1003799993,32cyclictest6452-21seq12:17:040
1003799993,30cyclictest19746-21grep09:57:040
10050999837,12cyclictest0-21swapper/210:40:532
10050999834,17cyclictest0-21swapper/210:36:082
1005099981,47cyclictest30489-21fschecks_count08:00:532
1003799984,33cyclictest24101-21fschecks_time07:40:550
10037999839,52cyclictest13142-21fschecks_time10:40:530
1003799983,36cyclictest352-21runrttasks11:33:540
1003799983,36cyclictest352-21runrttasks11:33:540
1003799983,36cyclictest20682-21/usr/sbin/munin09:06:050
1003799983,29cyclictest18136-21latency_hist09:55:340
10037999831,61cyclictest0-21swapper/009:41:070
10037999830,8cyclictest0-21swapper/008:15:430
10037999830,8cyclictest0-21swapper/008:15:430
1003799982,42cyclictest16491-21grep07:16:050
1003799982,29cyclictest6516-21grep09:35:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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