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2026-05-10 - 10:32
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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 rackbslot7.osadl.org (updated Sun May 10, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
364021349,86sleep23691-21fschecks_count18:57:372
4882991233,9cyclictest0-21swapper/020:16:450
4882991233,63cyclictest22469-21ssh00:01:430
4882991233,63cyclictest22469-21ssh00:01:430
4882991153,27cyclictest15460-21/usr/sbin/munin21:06:530
4882991143,43cyclictest4319-21ssh23:31:430
4882991143,43cyclictest4319-21ssh23:31:430
4882991143,26cyclictest21294-21sh23:05:470
4882991143,26cyclictest21294-21sh23:05:470
4882991142,28cyclictest23669-21ssh22:14:430
4882991142,26cyclictest12735-21munin-node21:56:400
4882991142,26cyclictest12735-21munin-node21:56:400
4882991134,25cyclictest11950-21/usr/sbin/munin19:21:480
4882991133,28cyclictest6452-21taskset19:06:310
4882991133,24cyclictest32467-21ssh21:35:440
4882991133,24cyclictest32467-21ssh21:35:440
4882991133,23cyclictest5793-21ssh21:45:150
4882991132,25cyclictest20089-21sh21:14:270
4882991132,24cyclictest800-21taskset00:19:330
4882991132,24cyclictest800-21taskset00:19:330
4882991123,25cyclictest12573-21ssh22:51:200
4882991123,21cyclictest1189-21/usr/sbin/munin22:31:450
4882991122,28cyclictest7950-21grep23:37:010
4882991122,28cyclictest19545-21wc22:07:060
4882991113,26cyclictest3747-21sh00:23:530
4882991113,26cyclictest24093-21/usr/sbin/munin21:22:060
4882991113,25cyclictest13556-21/usr/sbin/munin19:26:570
4882991113,24cyclictest31828-21rm22:27:380
4882991112,25cyclictest24941-21taskset20:01:420
4882991105,70cyclictest0-21swapper/023:06:460
4882991104,24cyclictest11351-21/usr/sbin/munin19:17:080
4882991103,35cyclictest16135-21ssh22:01:550
4882991103,28cyclictest18407-21acpi19:41:390
4882991103,28cyclictest18407-21acpi19:41:390
4882991103,27cyclictest21585-21sed21:16:530
48829911026,54cyclictest0-21swapper/023:56:290
4882991102,26cyclictest12055-21ssh23:44:080
3430211011,68sleep13414-21apt-get18:56:511
4882991098,25cyclictest29672-21seq00:12:410
4882991093,70cyclictest27103-21ssh21:26:420
4882991093,32cyclictest21485-21runrttasks19:51:310
48829910926,59cyclictest0-21swapper/021:47:420
4882991092,26cyclictest7645-21ntp_states19:07:010
4882991092,20cyclictest4029-21ssh22:36:390
4882991083,27cyclictest31558-21runrttasks20:21:490
4882991083,26cyclictest27218-21ssh23:15:400
4882991083,26cyclictest18580-21ssh23:01:280
4882991082,47cyclictest8884-21apt-get20:51:590
4882991082,28cyclictest29300-21ssh23:18:090
4882991082,28cyclictest28192-21taskset20:11:430
4882991082,25cyclictest6183-21rm00:27:250
4882991082,25cyclictest25954-21rm22:17:470
4882991082,25cyclictest21767-21ssh00:00:280
48829910812,61cyclictest11554-21seq20:57:540
48829910812,61cyclictest11554-21seq20:57:540
48869910788,9cyclictest0-21swapper/119:46:291
48869910788,9cyclictest0-21swapper/119:46:291
4882991073,26cyclictest14221-21ssh21:04:490
4882991072,25cyclictest11176-21ssh21:52:560
4882991064,27cyclictest5520-21kworker/u17:0+ext4-rsv-conversion22:41:480
4882991064,25cyclictest1907-21rm21:37:400
4882991063,26cyclictest14963-21ssh22:54:350
4882991063,25cyclictest26745-21ssh00:07:500
4882991063,25cyclictest26745-21ssh00:07:500
4882991062,24cyclictest312-21ssh23:24:390
4882991062,24cyclictest312-21ssh23:24:390
4882991052,27cyclictest15087-21ssh23:49:150
4882991052,26cyclictest1267-21ssh23:26:360
4882991042,26cyclictest29449-21sh22:24:190
4882991042,26cyclictest29449-21sh22:24:190
4882991033,22cyclictest8757-21taskset19:11:410
4882991032,8cyclictest0-21swapper/019:51:440
4882991032,25cyclictest17834-21runrttasks19:37:300
4882991032,25cyclictest17834-21runrttasks19:37:300
4882991022,21cyclictest6449-21seq20:42:470
3749210111,60sleep03777-21basename18:57:390
48959910078,15cyclictest25804-21kernelversion00:06:542
48959910078,15cyclictest25804-21kernelversion00:06:542
48959910059,11cyclictest181rcu_preempt20:31:512
48959910059,11cyclictest181rcu_preempt20:31:512
4882991002,25cyclictest16209-21sshd19:32:130
4882991002,25cyclictest16209-21sshd19:32:130
4882991002,24cyclictest545-21apt-get20:26:400
488299993,27cyclictest4375-21processes20:37:030
488299992,24cyclictest23851-21ntp_offset19:56:570
4895999781,10cyclictest9173-21fschecks_time20:52:372
488699973,70cyclictest16799-21ssh23:52:341
488299972,20cyclictest2166-21/usr/sbin/munin20:31:580
488299972,20cyclictest2166-21/usr/sbin/munin20:31:580
4895999673,15cyclictest4873-21cyclictest19:11:322
4886999532,25cyclictest0-21swapper/122:22:031
4886999532,25cyclictest0-21swapper/122:22:031
488299954,24cyclictest8059-21runrttasks20:47:500
4895999462,8cyclictest181rcu_preempt22:02:042
4886999472,15cyclictest26184-21sh00:07:041
4886999472,15cyclictest26184-21sh00:07:041
4886999441,28cyclictest4873-21cyclictest21:14:481
4895999359,13cyclictest181rcu_preempt23:36:202
4895999359,13cyclictest181rcu_preempt23:36:202
488299933,26cyclictest26531-21/usr/sbin/munin20:06:400
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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