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2026-03-11 - 15:37
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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 50 highest latencies:
System rackcslot4.osadl.org (updated Wed Mar 11, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
9766402258179,29sleep00-21swapper/007:07:580
9750652241199,28sleep10-21swapper/107:05:031
10304542540,4sleep00-21swapper/009:15:160
10234492540,4sleep00-21swapper/009:00:230
179699530,4rtkit-daemon1795-21rtkit-daemon10:29:501
10735712510,5sleep10-21swapper/110:14:211
179699500,4rtkit-daemon1795-21rtkit-daemon08:56:091
9842472490,4sleep10-21swapper/107:25:171
11175322490,4sleep1251rcuc/111:13:041
11126372480,3sleep11112641-21unixbench_multi11:05:271
179699370,4rtkit-daemon1795-21rtkit-daemon12:26:401
179699360,4rtkit-daemon1795-21rtkit-daemon09:16:381
179699350,26rtkit-daemon10179472chrt08:45:301
976956993412,10cyclictest1048480-21ssh09:39:450
976956993411,8cyclictest13-21ksoftirqd/009:30:210
179699340,4rtkit-daemon1795-21rtkit-daemon11:02:531
179699340,4rtkit-daemon1795-21rtkit-daemon09:09:550
97696099331,13cyclictest1024457-21apt-get09:05:151
97696099331,11cyclictest1089050-21sh10:35:001
976956993330,2cyclictest66950irq/132-enp2s012:16:250
179699330,3rtkit-daemon1795-21rtkit-daemon10:28:230
179699330,3rtkit-daemon1795-21rtkit-daemon07:12:221
10445742330,4sleep10-21swapper/109:34:551
97696099311,26cyclictest982070-40apt-check07:20:181
97695699317,8cyclictest13-21ksoftirqd/012:37:030
976960992911,11cyclictest1018582-21apt-get08:50:131
97695699299,8cyclictest13-21ksoftirqd/009:28:340
97695699296,8cyclictest13-21ksoftirqd/011:16:580
976956992925,3cyclictest66950irq/132-enp2s010:08:550
179699290,21rtkit-daemon1122090-21/usr/sbin/munin11:20:111
10023512290,21sleep01002345-21fschecks_count08:10:170
97695699289,8cyclictest13-21ksoftirqd/008:37:550
97695699286,7cyclictest13-21ksoftirqd/009:14:010
976956992824,2cyclictest66950irq/132-enp2s009:23:520
179699280,5rtkit-daemon979949-21cut07:15:161
976960992712,3cyclictest1010161-21turbostat08:30:011
97695699275,8cyclictest13-21ksoftirqd/010:17:490
97695699275,7cyclictest13-21ksoftirqd/011:27:460
97695699272,17cyclictest1150762-21apt-get12:00:120
97695699271,7cyclictest1026210-21diskmemload12:08:290
976956992714,11cyclictest13-21ksoftirqd/011:30:210
97696099265,3cyclictest0-21swapper/109:45:021
976960992620,5cyclictest3764937-1kworker/u9:209:57:181
976960992611,9cyclictest1149722-1kworker/u9:112:35:121
97695699267,5cyclictest0-21swapper/008:47:050
97695699266,7cyclictest13-21ksoftirqd/011:05:500
97695699263,8cyclictest13-21ksoftirqd/009:56:330
97695699261,7cyclictest1026210-21diskmemload12:14:260
976956992612,10cyclictest979617-21apt-get07:15:120
97696099259,10cyclictest1074092-21apt-get10:15:121
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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