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2026-03-10 - 22:10
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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 Tue Mar 10, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18460211210,18sleep015-21ksoftirqd/007:05:340
18525991144,52cyclictest352-21runrttasks12:03:340
185329911365,40cyclictest277-21dbus-daemon11:45:321
185259911349,56cyclictest200-21systemd-journal09:30:330
185259911136,10cyclictest0-21swapper/010:36:050
185259911136,10cyclictest0-21swapper/010:36:050
185329910950,51cyclictest0-21swapper/108:20:491
18525991083,31cyclictest4754-21fschecks_count12:05:520
18525991083,31cyclictest4754-21fschecks_count12:05:520
18525991063,47cyclictest12456-21fschecks_count09:35:540
185259910628,13cyclictest0-21swapper/012:26:080
185259910622,28cyclictest25924-21diskmemload11:56:030
185259910444,54cyclictest12114-21unixbench_singl08:21:090
185259910442,54cyclictest0-21swapper/009:20:310
18525991033,40cyclictest15735-21ssh11:30:470
18525991033,40cyclictest15735-21ssh11:30:470
18525991033,36cyclictest7339-21/usr/sbin/munin11:15:590
18525991033,28cyclictest23053-21ssh11:41:350
18525991023,38cyclictest352-21runrttasks12:30:590
18525991023,37cyclictest12929-21ssh11:25:490
18525991023,36cyclictest32088-21latency_hist09:15:340
18525991023,32cyclictest21080-21/usr/sbin/munin09:51:010
185259910221,22cyclictest6688-21sort11:15:340
185259910221,22cyclictest6688-21sort11:15:340
2610021010,7sleep20-21swapper/209:58:402
18525991014,37cyclictest10011-21ssh09:31:210
185259910135,11cyclictest0-21swapper/008:00:310
18525991013,45cyclictest352-21runrttasks08:57:110
18525991013,33cyclictest3527-21/usr/sbin/munin10:15:530
18525991012,29cyclictest30904-21cat11:55:340
18525991005,19cyclictest18802-21proc_pri09:46:030
18525991004,35cyclictest30909-21ntpq11:00:590
185259910038,55cyclictest200-21systemd-journal08:10:310
18525991003,39cyclictest21141-21wc10:45:330
18525991003,36cyclictest10697-21/usr/sbin/munin12:16:300
18525991003,29cyclictest23948-21cat07:20:350
18525991003,29cyclictest23948-21cat07:20:350
1852599995,37cyclictest27500-21fschecks_time07:30:560
1852599995,37cyclictest27500-21fschecks_time07:30:560
1852599994,35cyclictest515-21/usr/sbin/munin10:10:500
1852599993,39cyclictest30190-21latency_hist11:00:340
1852599993,36cyclictest31079-21find07:41:040
1852599993,35cyclictest32212-21df07:45:490
1852599993,35cyclictest25604-21/usr/sbin/munin07:26:000
1852599993,35cyclictest10372-21apt-config12:15:340
1852599993,35cyclictest10372-21apt-config12:15:340
1852599993,34cyclictest15840-21latency_hist08:35:340
18525999930,8cyclictest0-21swapper/008:10:490
18525999930,11cyclictest0-21swapper/010:30:470
18525999923,20cyclictest25919-21sort11:46:060
18525999923,20cyclictest25919-21sort11:46:060
182542997,71sleep10-21swapper/107:03:401
1853299983,69cyclictest24064-21apt-get09:00:491
1852599985,27cyclictest18919-21/usr/sbin/munin11:35:410
1852599984,35cyclictest3626-21latency_hist11:10:340
18525999838,52cyclictest0-21swapper/007:36:060
18525999838,52cyclictest0-21swapper/007:36:060
1852599983,34cyclictest13683-21unixbench_multi08:26:060
1852599983,34cyclictest13683-21unixbench_multi08:26:060
18525999825,12cyclictest0-21swapper/011:20:480
18525999825,12cyclictest0-21swapper/011:20:480
18525999825,12cyclictest0-21swapper/010:05:480
1852599982,38cyclictest24646-21grep10:50:540
274852970,6sleep30-21swapper/307:30:563
274852970,6sleep30-21swapper/307:30:563
1852599974,36cyclictest26020-21latency_hist09:05:340
1852599974,34cyclictest19020-21/usr/sbin/munin08:45:320
1852599974,31cyclictest4911-21cut08:00:540
1852599974,31cyclictest15474-21fschecks_time09:40:520
18525999739,51cyclictest26650-21kernelversion09:05:560
1852599973,34cyclictest352-21runrttasks10:02:170
1852599973,33cyclictest6797-21taskset10:20:530
1852599973,30cyclictest23996-21/usr/sbin/munin07:20:500
1852599973,29cyclictest16960-21grep08:36:070
1852599972,40cyclictest9549-21/usr/sbin/munin08:16:030
1852599972,33cyclictest21839-21latency10:45:560
1852599972,33cyclictest21839-21latency10:45:560
1852599972,33cyclictest21068-21/usr/sbin/munin08:51:040
1852599972,33cyclictest13657-21/usr/sbin/munin12:20:560
18536999616,56cyclictest10718-21apt-get12:15:472
1852599963,37cyclictest18712-21/usr/sbin/munin07:06:000
1852599963,33cyclictest352-21runrttasks09:22:060
18525999612,27cyclictest0-21swapper/010:30:040
1852599954,29cyclictest19457-21/usr/sbin/munin08:46:160
1852599953,34cyclictest24083-21/usr/sbin/munin09:56:030
1852599953,28cyclictest1578-21kernelversion07:50:570
18536999375,12cyclictest18116-21idleruntime-cro10:40:312
18536999375,12cyclictest18116-21idleruntime-cro10:40:312
1852599923,33cyclictest20752-21/usr/sbin/munin07:11:000
1852599923,33cyclictest20752-21/usr/sbin/munin07:11:000
18536998973,9cyclictest0-21swapper/209:30:462
18536998962,19cyclictest22120-21latency_hist07:15:352
18536998962,19cyclictest22120-21latency_hist07:15:352
18532998952,31cyclictest25276-21timerandwakeup10:51:081
18532998952,30cyclictest300-21rs:main1
1853299893,76cyclictest32484-21apt-get09:15:471
1853299893,30cyclictest12186-21/usr/sbin/munin09:35:501
18536998766,15cyclictest30811-21latency_hist11:55:332
18532998769,12cyclictest7170-21kworker/u17:3-rpciod12:21:081
18536998663,16cyclictest18516-21cyclictest08:01:092
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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