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2026-05-24 - 10:35
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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 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
106089912957,64cyclictest14446-21acpi19:10:430
106089911340,8cyclictest0-21swapper/023:41:120
967221129,74sleep19699-21/usr/sbin/munin18:56:141
967221129,74sleep19699-21/usr/sbin/munin18:56:141
106089911135,13cyclictest0-21swapper/019:30:510
106089911135,13cyclictest0-21swapper/019:30:510
106089911036,12cyclictest0-21swapper/022:00:580
106089910932,10cyclictest0-21swapper/022:26:010
106089910917,30cyclictest23584-40gzip23:50:370
106089910842,15cyclictest15513-21apt-key21:50:360
106089910842,15cyclictest15513-21apt-key21:50:360
106089910837,14cyclictest0-21swapper/023:31:190
106089910837,14cyclictest0-21swapper/023:31:190
106089910837,12cyclictest0-21swapper/023:20:360
106089910835,11cyclictest0-21swapper/000:01:060
106089910738,8cyclictest0-21swapper/022:35:570
10608991072,31cyclictest2562-21grep20:11:080
10627991063,83cyclictest574-21apt-get00:05:482
10608991063,51cyclictest14799-21apt-get23:35:570
10608991063,51cyclictest14799-21apt-get23:35:570
10608991063,42cyclictest18294-21sendmail_mailqu19:21:050
10608991063,41cyclictest352-21runrttasks21:59:030
106089910633,12cyclictest0-21swapper/020:20:590
106089910614,29cyclictest13159-21idleruntime00:25:570
10627991054,60cyclictest3676-21apt-get21:30:442
10627991054,60cyclictest3676-21apt-get21:30:442
10608991054,42cyclictest24802-21kernelversion19:41:560
10608991054,34cyclictest12896-21idleruntime-cro20:45:320
10608991054,34cyclictest12896-21idleruntime-cro20:45:320
10608991053,41cyclictest352-21runrttasks00:08:390
106089910528,21cyclictest8508-21sort22:31:090
106089910528,21cyclictest8508-21sort22:31:090
106089910436,10cyclictest0-21swapper/023:56:090
10608991033,35cyclictest10952-21cut19:00:530
10608991033,35cyclictest10952-21cut19:00:530
106089910330,12cyclictest0-21swapper/022:11:020
106089910325,25cyclictest9462-21latency_hist21:40:350
10608991025,34cyclictest856-21fschecks_count21:25:540
10608991024,36cyclictest16544-21fschecks_count21:51:520
10608991024,34cyclictest31668-21find22:16:060
10608991024,34cyclictest31668-21find22:16:060
106089910239,9cyclictest0-21swapper/023:50:550
106089910239,8cyclictest0-21swapper/021:10:570
10608991023,37cyclictest18395-21tune2fs21:00:560
10608991014,39cyclictest12484-21latency_hist00:25:360
10608991014,36cyclictest6663-21/usr/sbin/munin20:26:090
10608991014,36cyclictest25740-21/usr/sbin/munin23:00:430
10608991014,34cyclictest9641-21/usr/sbin/munin21:41:010
106089910136,10cyclictest0-21swapper/019:06:300
10608991013,40cyclictest5541-21fschecks_count23:20:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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