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2026-09-06 - 06:32
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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 Sun Sep 06, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38613112920,2sleep0471rcuog/220:00:250
3789628993229,1cyclictest0-21swapper/323:30:003
3789628993229,1cyclictest0-21swapper/300:05:003
3789628993219,1cyclictest0-21swapper/323:00:293
3789628992825,1cyclictest0-21swapper/322:40:183
3789628992825,1cyclictest0-21swapper/321:40:213
3789628992825,1cyclictest0-21swapper/320:40:193
3789628992623,1cyclictest0-21swapper/300:30:003
225272260,3sleep14179632-21kworker/u16:4-events_unbound00:00:281
3789628992522,1cyclictest0-21swapper/321:20:133
3789628992522,1cyclictest0-21swapper/320:20:223
3789628992522,1cyclictest0-21swapper/300:20:133
3789628992522,1cyclictest0-21swapper/300:20:133
3789628992321,1cyclictest0-21swapper/322:00:023
3789628992320,1cyclictest0-21swapper/323:21:223
3789628992320,1cyclictest0-21swapper/323:15:193
3789628992320,1cyclictest0-21swapper/322:30:013
3789628992320,1cyclictest0-21swapper/321:40:013
3789628992320,1cyclictest0-21swapper/300:10:013
3789628992220,1cyclictest0-21swapper/322:00:203
3789628992219,1cyclictest0-21swapper/322:20:073
3789628992219,1cyclictest0-21swapper/320:00:083
3789628992217,2cyclictest78943-21sleep00:40:003
3789628992213,6cyclictest4101367-21sleep22:50:003
3789628992118,1cyclictest0-21swapper/319:40:173
3789628992017,1cyclictest0-21swapper/323:50:123
3789628992017,1cyclictest0-21swapper/323:40:003
3789628992017,1cyclictest0-21swapper/321:30:213
3789628992017,1cyclictest0-21swapper/321:00:203
3789628992017,1cyclictest0-21swapper/320:35:273
3789628992017,1cyclictest0-21swapper/319:21:113
378962899201,14cyclictest3888047-21taskset20:25:003
3789628991916,1cyclictest0-21swapper/323:40:233
3789628991916,1cyclictest0-21swapper/320:11:333
3789628991916,1cyclictest0-21swapper/319:40:023
378962899191,14cyclictest3880616-21taskset20:15:263
378962899191,14cyclictest3868201-21chrt20:05:483
378962899191,14cyclictest3817611-21taskset19:30:123
3789628991815,1cyclictest0-21swapper/323:10:273
3789628991815,1cyclictest0-21swapper/323:00:003
3789628991815,1cyclictest0-21swapper/321:10:163
3789628991815,1cyclictest0-21swapper/321:10:003
3789628991815,1cyclictest0-21swapper/319:50:213
378962899181,14cyclictest4076749-21taskset22:31:333
378962899181,13cyclictest69641-21taskset00:30:423
378962899181,13cyclictest4101708-21chrt22:50:183
378962899181,13cyclictest4084429-21taskset22:36:103
378962899181,13cyclictest4053303-21taskset22:16:193
378962899181,13cyclictest4043581-21taskset22:10:203
378962899181,13cyclictest4037678-21taskset22:06:093
378962899181,13cyclictest4014117-21taskset21:50:363
378962899181,13cyclictest3974742-21taskset21:25:263
378962899181,13cyclictest3855599-21taskset19:58:593
378962899181,13cyclictest3842974-21taskset19:50:013
378962899181,13cyclictest3817204-21taskset19:28:453
378962899181,13cyclictest32543-21taskset00:10:123
378962899181,13cyclictest14724-21taskset23:55:263
3789628991715,1cyclictest0-21swapper/320:50:213
3789628991714,1cyclictest0-21swapper/323:30:073
3789628991714,1cyclictest0-21swapper/321:45:203
378962899171,13cyclictest4192937-21taskset23:45:233
378962899171,13cyclictest40174-21taskset00:15:033
378962899171,13cyclictest40174-21taskset00:15:023
378962899171,13cyclictest3953874-21taskset21:15:163
378962899171,13cyclictest3932187-21taskset20:56:233
378962899171,13cyclictest3798315-21taskset19:15:043
378962899171,12cyclictest4125046-21chrt23:05:133
378962899171,12cyclictest3789768-21taskset19:10:113
378962899161,11cyclictest3900189-21taskset20:30:503
638852156,6sleep064043-21/usr/sbin/munin00:30:190
38592862151,3sleep23860874-21kthreadcore20:00:192
3789628991513,0cyclictest0-21swapper/320:45:173
539562141,9sleep254012-21ssh00:20:322
539562141,9sleep254012-21ssh00:20:312
40458872141,9sleep14045893-21ssh22:12:201
40444492141,9sleep04044593-21ntpq22:10:230
39370382141,5sleep23937831-21memory21:00:202
38751852141,10sleep03875187-21/usr/sbin/munin20:15:120
41615162131,9sleep24161563-21ntpq23:25:222
39837062130,9sleep13983708-21ssh21:32:591
39612052138,3sleep20-21swapper/221:20:052
38061322132,4sleep03806800-21grep19:20:200
41856032121,8sleep04179384-21sendmail-msp23:40:350
41698162121,8sleep14169939-21ssh23:30:261
41498802120,9sleep04150669-21grep23:20:190
41152602120,9sleep04115266-21ssh22:55:290
40940922121,8sleep24094209-21fw_packets22:45:172
39385912123,6sleep13906836-21kworker/u16:1+ext4-rsv-conversion21:00:391
39194212128,2sleep0151ktimers/020:45:390
37834102121,5sleep13783407-21apt-get19:05:141
558762110,8sleep255885-21ssh00:25:122
41780742110,2sleep10-21swapper/123:36:291
41246812111,7sleep14124741-21munin-run23:05:001
40297382116,3sleep20-21swapper/222:00:342
40234422111,7sleep14023711-21latency_hist22:00:021
320652110,8sleep132069-21ssh00:09:471
298462111,2sleep029992-21ntpq00:05:210
627672100,7sleep162775-21ssh00:28:281
468362100,7sleep246842-21ssh00:17:302
468362100,7sleep246842-21ssh00:17:302
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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