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2025-12-27 - 01:52
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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 Fri Dec 26, 2025 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14879212410,85sleep114364-21apt-get07:05:041
164629911143,11cyclictest0-21swapper/008:05:040
164629911122,29cyclictest13064-21latency_hist11:34:460
164629911122,29cyclictest13064-21latency_hist11:34:460
16483991103,86cyclictest16204-21apt-get07:09:582
16483991103,86cyclictest16204-21apt-get07:09:582
164629910980,22cyclictest16458-21latency_hist07:09:470
164629910849,9cyclictest16442-21cyclictest09:55:360
164629910849,9cyclictest16442-21cyclictest09:55:360
16462991084,42cyclictest7944-21timerandwakeup11:25:190
164629910743,56cyclictest0-21swapper/008:10:140
164629910635,12cyclictest0-21swapper/010:10:210
164629910635,12cyclictest0-21swapper/010:10:210
164629910630,19cyclictest0-21swapper/010:45:060
164629910630,13cyclictest0-21swapper/012:17:300
164629910533,10cyclictest0-21swapper/010:55:150
16462991044,42cyclictest7583-21/usr/sbin/munin08:20:060
16462991043,53cyclictest22024-21runrttasks11:49:480
16462991033,36cyclictest19742-21unixbench_multi10:50:190
16462991033,36cyclictest19742-21unixbench_multi10:50:190
16462991024,35cyclictest31585-21grep11:10:180
164629910237,15cyclictest16442-21cyclictest09:40:210
164629910234,10cyclictest0-21swapper/009:50:190
164629910233,9cyclictest0-21swapper/009:35:150
16462991014,39cyclictest31931-21/usr/sbin/munin07:55:100
16462991014,39cyclictest31931-21/usr/sbin/munin07:55:100
16483991003,84cyclictest23885-21apt-get07:29:572
16462991003,33cyclictest7451-21latency_hist08:19:450
16462991002,44cyclictest12404-21/usr/sbin/munin08:35:070
16475999924,42cyclictest31-21ksoftirqd/111:21:351
1646299993,36cyclictest27840-21fschecks_count11:05:020
1646299993,36cyclictest27840-21fschecks_count11:05:020
1646299993,36cyclictest14257-21head11:35:200
1646299993,25cyclictest21421-21taskset11:48:450
1646299974,34cyclictest19002-21latency_hist11:44:450
1646299973,40cyclictest346-21runrttasks12:26:080
1646299964,33cyclictest346-21runrttasks10:09:120
1646299964,32cyclictest10749-21latency_hist08:29:460
1646299963,35cyclictest27338-21fschecks_count07:40:040
1646299963,31cyclictest7561-21mailstats10:30:160
1646299963,31cyclictest7561-21mailstats10:30:160
1646299963,24cyclictest6119-21latency_hist09:34:460
1646299954,36cyclictest346-21runrttasks12:29:490
1646299954,36cyclictest346-21runrttasks12:29:490
1646299953,39cyclictest320-21dbus-daemon12:24:430
1646299953,37cyclictest346-21runrttasks11:56:350
1646299953,36cyclictest25484-21/usr/sbin/munin07:35:100
16483999443,44cyclictest19188-21latency10:50:092
16483999443,44cyclictest19188-21latency10:50:092
1646299942,39cyclictest346-21runrttasks11:16:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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