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2026-05-11 - 20:26
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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 Mon May 11, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17811991233,29cyclictest16683-21mailstats08:31:570
17811991183,27cyclictest10981-21runrttasks09:30:470
17811991183,27cyclictest10981-21runrttasks09:30:470
17811991123,30cyclictest10801-21ssh12:12:020
178119911227,50cyclictest0-21swapper/009:16:490
178359911168,36cyclictest5838-21apt10:16:232
178359911168,36cyclictest5838-21apt10:16:232
178359911146,35cyclictest6227-21sh09:21:572
178359910972,30cyclictest17655-21apt-key08:36:272
17811991092,26cyclictest23638-21ssh11:40:310
17811991073,33cyclictest22589-21latency_hist08:51:260
17811991073,26cyclictest10872-21sh11:18:060
17811991073,24cyclictest7313-21ssh12:06:530
17811991073,24cyclictest22410-21sh10:42:250
17811991063,29cyclictest21605-21grep09:47:010
17811991063,29cyclictest21605-21grep09:47:010
17811991063,27cyclictest352-21runrttasks12:04:270
17811991063,25cyclictest1140-21ssh09:13:170
17811991063,25cyclictest1140-21ssh09:13:170
1757221066,15sleep10-21swapper/107:00:041
178359910453,42cyclictest23654-21latency_hist09:51:282
178359910453,42cyclictest23654-21latency_hist09:51:282
17835991042,27cyclictest28555-21seq09:06:032
17811991043,22cyclictest3424-21idleruntime-cro12:01:220
17811991043,22cyclictest3424-21idleruntime-cro12:01:220
17811991042,26cyclictest20295-21rm12:27:580
17811991042,26cyclictest20295-21rm12:27:580
17811991034,24cyclictest7226-21awk10:17:240
17811991033,30cyclictest12883-21ntp_states10:26:550
17811991033,20cyclictest13377-21processes12:16:560
17811991032,23cyclictest16852-21/usr/sbin/munin12:22:340
178359910239,37cyclictest9818-21ntp_kernel_err08:11:512
17811991025,27cyclictest753-21fschecks_time11:01:460
17811991022,28cyclictest28613-21fschecks_time07:31:460
17811991022,28cyclictest28613-21fschecks_time07:31:460
17835991012,29cyclictest12336-21cat11:21:332
17835991012,29cyclictest12336-21cat11:21:332
17835991002,29cyclictest20749-21chrt10:41:082
17835991002,26cyclictest28043-21seq07:30:572
17811991004,31cyclictest5840-21modprobe08:01:230
178119910041,52cyclictest0-21swapper/009:41:530
17811991003,26cyclictest27181-21cut09:56:490
17811991003,26cyclictest27181-21cut09:56:490
17811991002,24cyclictest28122-21ssh09:04:490
178119910016,27cyclictest31924-21rm11:53:380
178119910011,28cyclictest11763-21/usr/sbin/munin09:31:440
1783599992,27cyclictest2152-21runrttasks09:16:082
1783599992,27cyclictest2152-21runrttasks09:16:082
1781199993,11cyclictest30074-21apt-get10:56:350
1781199993,11cyclictest30074-21apt-get10:56:350
1781199992,25cyclictest26548-21sed09:56:250
17835999859,34cyclictest17801-21cyclictest09:52:232
1783599982,31cyclictest12041-21taskset12:15:302
1781199985,13cyclictest125402sleep008:21:350
1781199984,9cyclictest0-21swapper/011:48:520
1781199984,22cyclictest2689-21latency_hist07:51:250
1781199984,10cyclictest0-21swapper/010:06:350
1781199983,36cyclictest14373-21ssh11:24:350
1781199983,36cyclictest14373-21ssh11:24:350
1781199983,28cyclictest3507-21mailstats07:51:570
1783599973,33cyclictest17091-21runrttasks09:41:052
1783599973,33cyclictest17091-21runrttasks09:41:052
1783599973,29cyclictest6206-21seq12:05:562
1781199974,29cyclictest7869-21ssh09:25:260
1781199973,31cyclictest14510-21/usr/sbin/munin09:36:560
1781199973,31cyclictest14510-21/usr/sbin/munin09:36:560
1781199973,27cyclictest15357-21ssh11:26:380
1781199973,24cyclictest5026-21sh10:14:050
1781199973,24cyclictest5026-21sh10:14:050
1783599962,27cyclictest19944-21ssh09:45:332
1783599962,25cyclictest10551-21runrttasks09:29:342
1783599962,25cyclictest10551-21runrttasks09:29:342
1781199965,25cyclictest30230-21apt-get07:36:490
1781199964,27cyclictest15919-21latency_hist08:31:260
1781199963,32cyclictest11085-21ntpd11:08:020
1781199963,21cyclictest23361-21sort07:16:400
1781199963,21cyclictest23361-21sort07:16:400
1781199962,29cyclictest7894-21fschecks_count08:06:430
17811999611,31cyclictest277-21dbus-daemon07:46:240
17835999556,33cyclictest0-21swapper/209:07:012
1783599952,32cyclictest21074-21seq07:07:282
1781199953,31cyclictest9537-21grep10:21:450
1781199953,30cyclictest24804-21ps10:46:570
1781199953,24cyclictest6951-21awk11:11:510
1781199953,24cyclictest6951-21awk11:11:510
1781199952,27cyclictest15568-21fschecks_time10:31:450
17835999471,10cyclictest39-21ksoftirqd/211:45:232
17835999471,10cyclictest39-21ksoftirqd/211:45:232
17835999450,36cyclictest0-21swapper/209:31:492
1783599943,27cyclictest23064-21chrt11:38:532
1783599942,26cyclictest25617-21runrttasks10:48:072
1783599942,24cyclictest5590-21seq07:58:302
1781199943,28cyclictest17696-21latency_hist07:01:270
17835999353,32cyclictest0-21swapper/208:06:442
1783599933,22cyclictest2687-21latency_hist07:51:252
1781199933,6cyclictest0-21swapper/008:41:330
1781199933,32cyclictest25688-21modprobe09:01:220
1781199933,30cyclictest19033-21switchtime10:36:580
1781199933,27cyclictest11674-21cat08:16:580
1781199933,26cyclictest19349-21latency_hist07:06:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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