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2026-01-12 - 00:46
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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 Jan 11, 2026 12:44:37)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
305959912768,53cyclictest8886-21cstates11:54:540
29269212313,79sleep129275-21/usr/sbin/munin07:04:471
29269212313,79sleep129275-21/usr/sbin/munin07:04:471
2733821200,5sleep00-21swapper/011:31:110
30595991182,29cyclictest21632-21seq12:16:580
30595991063,31cyclictest31143-21ssh10:44:430
30595991063,31cyclictest31143-21ssh10:44:430
30595991063,27cyclictest5949-21cstates09:09:380
30612991052,30cyclictest16021-21rm11:13:192
30595991032,21cyclictest28763-21seq11:34:270
30595991032,21cyclictest28763-21seq11:34:270
305959910241,55cyclictest0-21swapper/009:59:210
305959910241,55cyclictest0-21swapper/009:59:210
30595991023,30cyclictest352-21runrttasks07:58:470
30595991023,27cyclictest14397-21cron12:04:210
30595991023,27cyclictest14397-21cron12:04:210
305959910185,10cyclictest13244-21modprobe07:54:210
305959910185,10cyclictest13244-21modprobe07:54:210
30595991013,26cyclictest544-21cron11:19:200
30595991013,13cyclictest21776-21apt-get10:29:340
305959910039,53cyclictest28482-21apt-key08:39:260
30595991003,22cyclictest18460-21/usr/sbin/munin09:29:480
30595991002,27cyclictest31672-21ssh09:51:280
30595991002,22cyclictest28350-21/usr/sbin/munin10:39:480
3059599999,80cyclictest8817-21cpu07:40:350
3059599999,80cyclictest8817-21cpu07:40:350
3059599993,32cyclictest2769-21timerandwakeup07:19:560
3059599993,32cyclictest2769-21timerandwakeup07:19:560
3059599992,24cyclictest14132-21sed11:09:470
30595999917,24cyclictest58-21kcompactd010:28:450
30595999917,24cyclictest58-21kcompactd010:28:450
3043029912,48sleep030454-21munin-run07:09:220
3043029912,48sleep030454-21munin-run07:09:220
3059599984,32cyclictest12697-21/usr/sbin/munin10:14:570
3059599984,32cyclictest12697-21/usr/sbin/munin10:14:570
3059599984,27cyclictest352-21runrttasks08:07:260
3059599983,30cyclictest2187-21modprobe12:39:200
30595999817,24cyclictest10850-21rm09:17:260
3061299973,26cyclictest9432-21sh11:01:462
30612999728,37cyclictest0-21swapper/212:05:582
30612999728,37cyclictest0-21swapper/212:05:582
3061299972,27cyclictest352-21runrttasks10:10:332
3059599973,33cyclictest31811-21latency_hist12:34:240
3059599973,33cyclictest31811-21latency_hist12:34:240
3059599973,32cyclictest325-21/usr/sbin/munin07:15:010
3059599973,24cyclictest31831-21acpi11:39:310
3059599972,32cyclictest20983-21ssh09:34:360
30612999651,35cyclictest0-21swapper/208:04:242
30612999644,10cyclictest181rcu_preempt11:54:262
30612999644,10cyclictest181rcu_preempt11:54:262
3059599964,27cyclictest24972-21latency_hist08:29:240
30612999543,45cyclictest27889-21threads09:44:582
30612999543,45cyclictest27889-21threads09:44:582
3059599953,35cyclictest3361-21sh11:44:560
3059599953,22cyclictest17165-21sh09:28:080
3059599952,29cyclictest5789-21grep07:29:540
30612999455,33cyclictest20593-21switchtime11:19:562
30612999455,33cyclictest20593-21switchtime11:19:562
30612999449,39cyclictest26535-21sh09:43:562
3059599943,39cyclictest14115-21ssh09:23:030
3059599943,39cyclictest14115-21ssh09:23:030
3059599943,19cyclictest3609-21apt-get07:24:340
3059599943,19cyclictest3609-21apt-get07:24:340
30595999429,57cyclictest0-21swapper/012:24:230
3059599942,35cyclictest27222-21sh09:44:420
3059599942,35cyclictest27222-21sh09:44:420
3059599942,27cyclictest9815-21/usr/sbin/munin10:09:380
30612999373,14cyclictest5513-21diskmemload09:27:332
3061299933,28cyclictest3830-21runrttasks09:03:402
3059599933,33cyclictest7312-21cron10:59:210
3059599933,33cyclictest20363-21sort08:15:460
3059599933,30cyclictest15748-21grep12:04:580
3059599933,30cyclictest15748-21grep12:04:580
3059599933,29cyclictest24765-21ssh10:34:310
3059599933,29cyclictest24765-21ssh10:34:310
3059599933,27cyclictest9385-21idleruntime-cro10:09:210
3059599933,27cyclictest9385-21idleruntime-cro10:09:210
3059599932,20cyclictest31386-21/usr/sbin/munin07:09:560
3061299923,24cyclictest352-21runrttasks10:52:242
3061299922,29cyclictest23069-21sh10:30:282
3059599928,9cyclictest0-21swapper/008:59:520
3059599924,25cyclictest20122-21/usr/sbin/munin11:19:440
3059599924,25cyclictest20122-21/usr/sbin/munin11:19:440
3059599923,32cyclictest25417-21chrt08:29:470
3059599923,31cyclictest15338-21grep07:59:430
3059599923,29cyclictest26430-21/usr/sbin/munin12:24:480
3059599923,29cyclictest23306-21/usr/sbin/munin11:24:490
3059599923,25cyclictest10385-21basename11:04:210
3059599923,22cyclictest8138-21modprobe11:54:210
3059599923,22cyclictest8138-21modprobe11:54:210
30595999230,51cyclictest0-21swapper/008:09:310
30595999230,51cyclictest0-21swapper/008:09:310
3059599922,21cyclictest15746-21find10:19:310
30612999153,32cyclictest20923-21mailstats08:16:022
30612999149,35cyclictest0-21swapper/208:24:442
30612999149,34cyclictest0-21swapper/207:40:532
30612999149,34cyclictest0-21swapper/207:40:532
3061299913,7cyclictest0-21swapper/212:34:322
3059599914,33cyclictest4585-21sort09:59:570
3059599914,31cyclictest18704-21cat12:09:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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