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2026-05-04 - 00:36
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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 rackeslot2.osadl.org (updated Sun May 03, 2026 12:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11032172970,2sleep20-21swapper/209:25:362
13088932880,2sleep30-21swapper/311:40:413
12810082780,3sleep30-21swapper/311:25:263
12117412680,1sleep01211739-21ssh10:39:420
10104912480,1sleep01010495-21tr08:15:330
9498512310,2sleep30-21swapper/307:30:273
11146672280,2sleep30-21swapper/309:35:313
921925992724,2cyclictest1272440-21tr11:20:001
921924992615,7cyclictest1192298-21kthreadcore10:25:340
921925992519,2cyclictest134050irq/121-eno109:15:021
921924992522,2cyclictest1-21systemd11:10:010
2649091250,6phc2sys0-21swapper/307:15:253
921924992413,6cyclictest0-21swapper/009:40:010
921924992317,5cyclictest3851703-21mta-sts-daemon11:45:370
921925992217,2cyclictest134050irq/121-eno109:40:331
921925992217,2cyclictest134050irq/121-eno109:40:331
921925992216,2cyclictest134050irq/121-eno110:45:011
921925992215,3cyclictest1174162-21/usr/sbin/munin10:15:361
921924992219,2cyclictest1290-21dbus-daemon09:15:010
92192499221,12cyclictest1242106-21perf11:00:000
921926992118,1cyclictest0-21swapper/208:50:012
921925992115,2cyclictest134050irq/121-eno111:15:011
921924992118,2cyclictest1030686-21apt-key08:35:010
921924992111,4cyclictest0-21swapper/010:15:010
921926992017,1cyclictest0-21swapper/210:40:002
921926992017,1cyclictest0-21swapper/208:55:002
921925992017,2cyclictest1290-21dbus-daemon11:25:011
921925992017,2cyclictest1097694-21/usr/sbin/munin09:25:001
92192499209,6cyclictest0-21swapper/010:20:300
92192499209,6cyclictest0-21swapper/010:10:010
92192499209,6cyclictest0-21swapper/009:30:350
92192499208,7cyclictest0-21swapper/009:25:370
921924992017,2cyclictest1319043-21grep11:50:270
92192499201,15cyclictest1278149-21cut11:20:350
921924992010,6cyclictest3827634-1atopacctd10:45:240
383433398200,5rtkit-daemon3851703-21mta-sts-daemon08:29:191
921926991916,1cyclictest0-21swapper/212:30:352
92192599191,8cyclictest1326-21systemd-logind11:10:011
921925991916,2cyclictest1326-21systemd-logind10:15:001
921925991916,2cyclictest1105459-21latency_hist09:30:011
921925991915,3cyclictest3851704-21mta-sts-daemon11:30:311
921925991912,2cyclictest134050irq/121-eno109:50:021
92192499198,6cyclictest0-21swapper/011:40:250
92192499198,6cyclictest0-21swapper/011:30:360
92192499198,6cyclictest0-21swapper/009:15:320
92192499195,9cyclictest1054044-21kthreadcore08:50:320
921924991916,2cyclictest1219670-21latency_hist10:45:010
921924991916,2cyclictest1143496-21systemd-run09:55:010
921924991911,7cyclictest0-21swapper/010:20:010
383433398190,3rtkit-daemon3851702-21mta-sts-daemon07:10:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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