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2026-04-09 - 14:19
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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
Characteristics of the 100 highest latencies:
System rackcslot4.osadl.org (updated Thu Apr 09, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14089272284243,27sleep00-21swapper/019:08:030
14087842258191,52sleep10-21swapper/119:06:311
14563312600,2sleep11456330-21grep21:00:241
179699450,3rtkit-daemon1795-21rtkit-daemon23:01:551
179699440,3rtkit-daemon0-21swapper/022:19:380
179699440,11rtkit-daemon0-21swapper/022:45:230
179699430,3rtkit-daemon0-21swapper/019:13:240
179699420,3rtkit-daemon0-21swapper/020:53:000
14488402420,1sleep00-21swapper/020:45:120
179699400,3rtkit-daemon0-21swapper/019:34:190
1409249993632,2cyclictest1426988-21apt-config19:50:021
1409249993632,2cyclictest1413655-21apt-get19:20:031
15672542350,7sleep00-21swapper/023:41:500
15349712340,5sleep00-21swapper/022:55:300
140924999328,5cyclictest806-21in:imuxsock20:19:591
1409249993126,3cyclictest1456796-1kworker/1:2H21:05:451
1409249993124,5cyclictest1573382-21grep23:50:231
179699300,5rtkit-daemon1459175-21diskmemload23:37:550
179699300,5rtkit-daemon1453318-21diskstats20:55:160
1409249993023,5cyclictest1416583-21gltestperf19:25:161
179699290,4rtkit-daemon1537615-21apt-get23:00:150
179699290,18rtkit-daemon66950irq/132-enp2s021:51:250
179699280,7rtkit-daemon850-21runrttasks00:36:431
179699280,3rtkit-daemon0-21swapper/022:24:560
140924999286,2cyclictest141rcu_preempt23:40:221
1409249992811,10cyclictest1466909-21apt-get21:20:151
1409244992824,3cyclictest66950irq/132-enp2s020:08:420
179699270,20rtkit-daemon0-21swapper/123:08:041
15185222270,3sleep11518528-21ssh22:33:091
140924999272,17cyclictest1582812-21apt-get00:05:141
1409249992715,8cyclictest1459175-21diskmemload23:24:001
1409244992724,2cyclictest66950irq/132-enp2s023:29:070
1409244992712,9cyclictest1444867-21apt-get20:35:110
179699260,5rtkit-daemon141rcu_preempt23:31:110
179699260,18rtkit-daemon0-21swapper/123:45:281
179699260,18rtkit-daemon0-21swapper/023:06:240
179699260,18rtkit-daemon0-21swapper/022:35:290
140924999263,15cyclictest1512737-21apt-get22:25:151
140924499262,16cyclictest1420551-21apt-get19:35:120
1409244992613,7cyclictest66950irq/132-enp2s022:40:120
179699250,3rtkit-daemon0-21swapper/022:50:570
179699250,3rtkit-daemon0-21swapper/021:13:480
179699250,17rtkit-daemon0-21swapper/023:24:360
179699250,17rtkit-daemon0-21swapper/021:25:140
140924999253,3cyclictest141rcu_preempt21:15:001
140924999251,18cyclictest1596627-21apt-get00:25:151
1409249992511,8cyclictest1575442-1kworker/u9:200:15:111
140924999250,8cyclictest1454430-21taskset20:55:391
140924499259,10cyclictest1585649-21apt-get00:10:120
140924499253,15cyclictest1446838-21apt-get20:40:140
1409244992522,2cyclictest66950irq/132-enp2s022:14:540
1409244992522,2cyclictest66950irq/132-enp2s000:16:170
179699240,3rtkit-daemon0-21swapper/100:12:501
179699240,3rtkit-daemon0-21swapper/022:08:140
179699240,3rtkit-daemon0-21swapper/019:54:490
14937532240,8sleep10-21swapper/121:57:171
140924999245,17cyclictest0-21swapper/100:00:211
140924999242,16cyclictest1409376-21apt-get19:10:131
140924499242,16cyclictest1575748-21apt-get23:55:130
140924499242,15cyclictest1437042-21apt-get20:15:130
140924499242,14cyclictest1442919-21apt-get20:30:100
140924499241,2cyclictest141rcu_preempt21:46:250
1409244992411,9cyclictest1547954-21apt-get23:15:110
1409244992411,7cyclictest66950irq/132-enp2s021:15:150
179699230,3rtkit-daemon0-21swapper/020:25:320
179699230,3rtkit-daemon0-21swapper/019:56:430
179699230,3rtkit-daemon0-21swapper/019:29:570
179699230,16rtkit-daemon0-21swapper/100:32:431
140924999234,3cyclictest1459175-21diskmemload22:50:021
140924999232,3cyclictest141rcu_preempt23:10:161
1409249992316,5cyclictest1525831-21ssh22:43:461
140924999231,20cyclictest1477393-21cat21:35:001
140924999231,20cyclictest1424298-21python319:45:001
140924999230,5cyclictest1434898-21idleruntime-cro20:10:011
140924499238,2cyclictest13-21ksoftirqd/000:21:320
140924499232,2cyclictest141rcu_preempt00:25:170
140924499232,14cyclictest1411907-21apt-get19:15:130
1409244992312,6cyclictest66950irq/132-enp2s021:40:120
179699220,3rtkit-daemon0-21swapper/021:59:000
140924999224,16cyclictest1484342-21latency_hist21:45:011
140924999223,17cyclictest1444642-21cat20:34:551
140924999223,10cyclictest1554844-21apt-get23:25:131
1409249992219,2cyclictest18150irq/39-mmc019:17:051
1409249992218,2cyclictest1592366-21apt-get00:20:021
140924999221,4cyclictest1426655-21python319:50:011
1409249992213,7cyclictest1549311-21users23:15:231
1409249992212,7cyclictest157895650ssh23:59:571
140924999220,20cyclictest1488016-21grep21:50:001
140924499223,11cyclictest1439020-21apt-get20:20:100
140924499223,11cyclictest1435095-21apt-get20:10:130
140924499222,15cyclictest1466909-21apt-get21:20:130
140924499222,14cyclictest1544411-21apt-get23:10:120
140924499222,14cyclictest1422521-21apt-get19:40:130
1409244992217,3cyclictest1431495-21grep20:00:160
140924499221,2cyclictest141rcu_preempt21:30:160
1409244992210,7cyclictest66950irq/132-enp2s000:00:120
1409244992210,10cyclictest13-21ksoftirqd/022:00:230
140924999217,7cyclictest26-21ksoftirqd/122:00:121
140924999213,11cyclictest1477570-21apt-get21:35:111
140924999212,2cyclictest141rcu_preempt23:40:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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