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2026-07-28 - 10:51
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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 100 highest latencies:
System rackeslot8.osadl.org (updated Tue Jul 28, 2026 00:43:57)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
273702721870,1sleep1321rcuc/120:55:171
2599375993128,1cyclictest0-21swapper/321:40:193
30404252270,2sleep0222-21plymouthd00:10:190
2599375992622,1cyclictest0-21swapper/300:05:003
2599375992320,1cyclictest0-21swapper/321:20:153
2599375992118,1cyclictest0-21swapper/322:20:043
2599375992118,1cyclictest0-21swapper/322:05:133
2599375992111,7cyclictest26332782sleep319:32:213
2599375992017,1cyclictest0-21swapper/322:40:213
2599375992017,1cyclictest0-21swapper/322:35:123
2599375992017,1cyclictest0-21swapper/322:00:013
2599375992017,1cyclictest0-21swapper/321:00:013
2599375992017,1cyclictest0-21swapper/320:50:013
2599375992017,1cyclictest0-21swapper/300:20:043
259937599201,15cyclictest2717224-21taskset20:40:133
259937599201,15cyclictest2717224-21taskset20:40:123
259937599201,14cyclictest2716616-21taskset20:36:233
259937599192,13cyclictest2855379-21taskset22:10:213
2599375991916,1cyclictest0-21swapper/323:51:323
2599375991916,1cyclictest0-21swapper/323:00:193
2599375991916,1cyclictest0-21swapper/322:20:013
2599375991916,1cyclictest0-21swapper/320:20:233
259937599191,14cyclictest3021160-21taskset23:55:303
259937599191,14cyclictest3021160-21taskset23:55:293
259937599191,14cyclictest2999949-21taskset23:45:163
259937599191,13cyclictest2672264-21taskset20:05:003
259937599191,13cyclictest2659469-21chrt19:55:153
27872502181,9sleep02787398-21/usr/sbin/munin21:30:130
275912021814,1sleep30-21swapper/321:10:213
259937599182,13cyclictest2966975-21taskset23:22:463
259937599182,12cyclictest2735978-21taskset20:52:593
2599375991816,1cyclictest0-21swapper/323:10:013
2599375991815,1cyclictest0-21swapper/322:50:193
2599375991815,1cyclictest0-21swapper/321:00:043
2599375991815,1cyclictest0-21swapper/319:20:013
259937599181,13cyclictest2989201-21taskset23:35:263
259937599181,13cyclictest2975630-21taskset23:29:563
259937599181,13cyclictest2958442-21taskset23:16:013
259937599181,13cyclictest2886993-21taskset22:30:263
259937599181,13cyclictest2880136-21taskset22:26:543
259937599181,13cyclictest2880136-21taskset22:26:533
259937599181,13cyclictest2833167-21taskset21:57:423
259937599181,13cyclictest2816258-21taskset21:45:233
259937599181,13cyclictest2794309-21taskset21:33:573
259937599181,13cyclictest2785856-21taskset21:27:073
259937599181,13cyclictest2767962-21taskset21:15:203
259937599181,13cyclictest2754533-21taskset21:05:263
259937599181,13cyclictest2710208-21taskset20:31:273
259937599181,13cyclictest2678777-21chrt20:10:143
259937599181,13cyclictest2659009-21taskset19:53:093
259937599181,13cyclictest2646624-21taskset19:45:083
259937599181,13cyclictest2646155-21taskset19:42:233
259937599181,13cyclictest2639654-21taskset19:36:543
259937599181,13cyclictest2626846-21taskset19:26:483
259937599181,13cyclictest2619767-21taskset19:20:223
259937599181,12cyclictest2818624-21taskset21:50:013
259937599177,7cyclictest26980242sleep320:25:133
259937599172,12cyclictest3077299-21taskset00:32:423
2599375991714,1cyclictest0-21swapper/319:10:203
2599375991714,1cyclictest0-21swapper/300:35:173
259937599171,13cyclictest3051994-21taskset00:15:193
259937599171,13cyclictest2991632-21taskset23:40:023
259937599171,13cyclictest2926223-21taskset22:55:233
259937599171,13cyclictest2685125-21taskset20:15:023
259937599171,12cyclictest3037117-21taskset00:05:533
259937599171,12cyclictest2976257-21taskset23:30:153
259937599171,12cyclictest2905227-21taskset22:45:053
26457512160,5sleep12645753-21timerandwakeup19:40:291
2599375991613,1cyclictest0-21swapper/300:25:193
259937599161,12cyclictest3038901-21taskset00:10:093
259937599161,12cyclictest2950704-21taskset23:11:273
259937599161,12cyclictest2677474-21taskset20:05:213
259937599161,11cyclictest2802636-21sleep21:40:003
30789462140,6sleep03079826-21irqrtprio00:35:160
30614172141,10sleep13061423-21ssh00:22:191
27618902142,5sleep22749611-21kworker/u16:0+nfsiod21:11:242
26273652141,3sleep22627398-21apt-get19:30:122
29417112131,4sleep12941857-21ntpq23:05:221
29124352130,8sleep12912441-21ssh22:49:061
28404032130,1sleep0221rcuc/022:00:510
28327602120,8sleep12832768-21ssh21:56:411
27043622122,7sleep0222-21plymouthd20:30:030
26869802120,9sleep22688687-21cut20:15:182
26517782120,9sleep02651812-21ntpq19:45:210
26198452121,8sleep12619971-21mailstats19:20:251
29135772111,7sleep02914115-21irqrtprio22:50:160
28449472114,5sleep22846635-21kthreadcore22:05:202
28344892111,2sleep2222-21plymouthd22:00:142
27971162111,7sleep02798782-21kthreadcore21:35:190
27947192111,7sleep22794778-21munin-run21:35:012
27469032111,3sleep02747883-21memory21:00:230
26534172111,7sleep12653574-21irqcore19:50:161
30462712100,7sleep13046277-21ssh00:14:211
30385832100,7sleep11-21systemd00:10:011
30224392100,4sleep02954365-21kworker/u16:2+rpciod23:59:010
30224392100,4sleep02954365-21kworker/u16:2+rpciod23:59:000
29950132100,7sleep02996453-21kthreadcore23:40:210
29675112100,7sleep01000-21snmpd23:24:160
29662382101,7sleep10-21swapper/123:20:401
29495832101,5sleep12949727-21/usr/sbin/munin23:10:221
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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