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2026-04-15 - 10:03
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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 Wed Apr 15, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
38807022310,2sleep1321rcuc/121:00:001
3737131992623,1cyclictest0-21swapper/320:50:023
373713199222,15cyclictest4109293-21taskset23:26:323
373713199222,14cyclictest3880695-21turbostat21:00:003
3737131992219,1cyclictest0-21swapper/320:25:003
373713199221,15cyclictest3916903-21taskset21:25:003
40231542210,10sleep24023201-21ld22:30:232
373713199212,14cyclictest24547-21taskset00:38:203
3737131992119,1cyclictest0-21swapper/321:00:013
3737131992118,1cyclictest0-21swapper/322:45:213
3737131992118,1cyclictest0-21swapper/319:35:013
373713199211,15cyclictest4002220-21taskset22:20:013
373713199211,15cyclictest3784112-21taskset19:42:183
373713199209,7cyclictest4179764-21taskset00:13:193
373713199209,7cyclictest38680552sleep320:50:053
373713199201,8cyclictest3803611-21turbostat20:04:553
3737131992018,1cyclictest0-21swapper/322:00:003
3737131992017,1cyclictest0-21swapper/322:40:023
3737131992017,1cyclictest0-21swapper/322:30:133
373713199201,15cyclictest3828110-21taskset20:15:203
373713199201,15cyclictest3797465-21taskset19:55:123
41326222191,6sleep04132628-21sh23:41:590
41326222191,6sleep04132628-21sh23:41:580
3737131991917,1cyclictest0-21swapper/323:00:013
3737131991916,1cyclictest0-21swapper/323:40:263
3737131991916,1cyclictest0-21swapper/323:40:253
3737131991916,1cyclictest0-21swapper/323:20:153
3737131991916,1cyclictest0-21swapper/322:50:233
3737131991916,1cyclictest0-21swapper/300:30:163
3737131991915,1cyclictest0-21swapper/322:20:003
373713199191,14cyclictest4172393-21taskset00:09:303
373713199191,14cyclictest3899247-21taskset21:10:253
373713199191,13cyclictest4094039-21taskset23:17:223
373713199191,13cyclictest3979257-21taskset22:05:133
3737131991816,1cyclictest0-21swapper/323:00:143
3737131991816,1cyclictest0-21swapper/322:00:243
3737131991815,1cyclictest0-21swapper/322:10:163
3737131991815,1cyclictest0-21swapper/321:45:173
3737131991815,1cyclictest0-21swapper/321:40:003
3737131991815,1cyclictest0-21swapper/300:25:133
373713199181,14cyclictest1870-21taskset00:24:503
373713199181,13cyclictest4180672-21taskset00:15:113
373713199181,13cyclictest4148116-21taskset23:52:023
373713199181,13cyclictest4141405-21turbostat23:50:013
373713199181,13cyclictest4124790-21taskset23:36:463
373713199181,13cyclictest4072445-21taskset23:05:153
373713199181,13cyclictest3946855-21taskset21:42:373
373713199181,13cyclictest3930910-21taskset21:31:143
373713199181,13cyclictest3907565-21taskset21:15:423
373713199181,13cyclictest3790467-21taskset19:46:223
41111702171,9sleep14111405-21irqcore23:30:161
373713199172,12cyclictest4163497-21taskset00:01:123
3737131991714,1cyclictest0-21swapper/319:15:033
373713199171,13cyclictest3822443-21taskset20:10:313
373713199171,13cyclictest3775846-21taskset19:35:193
373713199171,12cyclictest4080937-21taskset23:10:163
373713199171,12cyclictest4039385-21taskset22:40:543
373713199171,12cyclictest4013833-21taskset22:25:193
373713199171,12cyclictest3961731-21taskset21:50:423
373713199171,12cyclictest3854606-21taskset20:35:463
373713199171,12cyclictest3848170-21taskset20:30:403
373713199171,12cyclictest3791049-21chrt19:50:123
373713199171,11cyclictest3890778-21chrt21:05:203
3737131991613,1cyclictest0-21swapper/323:55:203
373713199161,12cyclictest4110730-21taskset23:30:063
373713199161,12cyclictest3922942-21taskset21:25:283
373713199161,12cyclictest3860422-21taskset20:40:223
373713199161,12cyclictest3841484-21taskset20:25:283
373713199161,12cyclictest3816062-21taskset20:05:383
373713199161,12cyclictest3764741-21taskset19:26:173
373713199161,12cyclictest3758236-21taskset19:20:283
373713199160,12cyclictest3743181-21taskset19:10:503
41547002156,2sleep2171rcu_preempt23:55:232
40415592150,12sleep14042086-21cut22:45:181
40178692151,2sleep00-21swapper/022:30:130
40153442140,10sleep14015398-21ntpq22:25:211
38928072140,11sleep23892991-21sed21:05:282
129998140,9rtkit-daemon3985466-21ssh22:07:020
129998140,10rtkit-daemon4093988-21ssh23:17:140
6192130,2sleep00-21swapper/000:21:270
39918142130,3sleep134-21ksoftirqd/122:10:161
39030382131,9sleep03904574-21grep21:15:200
37308942131,6sleep23730917-21apt-get19:05:122
129998130,8rtkit-daemon3745703-21ntpq19:15:031
129998130,5rtkit-daemon4170152-21cut00:05:210
129998130,3rtkit-daemon222-21plymouthd23:58:030
41888262121,8sleep24189061-21irqcore00:20:172
41872752121,7sleep2222-21plymouthd00:17:402
41336402120,8sleep24133840-21latency_hist23:45:002
41336402120,8sleep24133840-21latency_hist23:45:002
41255212121,4sleep14125525-21ssh23:38:581
129998120,8rtkit-daemon24063-21ssh00:36:540
129998120,4rtkit-daemon3743774-21munin-node23:32:260
6881110,2low-memory-moni0-21swapper/200:13:202
41685032110,1sleep2421rcuc/200:05:202
40877142110,7sleep14087519-21/usr/sbin/munin23:15:161
39689362111,7sleep03969043-21sendmail_mailtr21:55:260
39462572110,2sleep00-21swapper/021:40:500
38359262111,6sleep03835959-21apt-get20:25:120
129998110,7rtkit-daemon4140013-21ssh23:45:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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