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2026-07-24 - 21:37
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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 Fri Jul 24, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5952214310,94sleep06035-21unixbench_singl06:52:100
65499911933,53cyclictest15350irq/295-2188000.ethernet09:21:370
65499911933,53cyclictest15350irq/295-2188000.ethernet09:21:370
6549991183,91cyclictest29724-21apt-get10:16:410
6549991172,27cyclictest9002-21apt-get07:01:500
6549991153,27cyclictest26191-21ssh10:09:520
6549991148,24cyclictest12969-21sh11:35:390
6549991143,27cyclictest1030-21apt-get10:21:320
6549991143,27cyclictest1030-21apt-get10:21:320
6549991143,27cyclictest1030-21apt-get10:21:320
6549991122,28cyclictest5165-21ssh09:35:300
6549991113,29cyclictest16082-21sh10:46:350
6549991113,29cyclictest16082-21sh10:46:350
6549991112,28cyclictest30499-21ssh11:10:470
6549991112,28cyclictest30499-21ssh11:10:470
6549991102,29cyclictest22410-21latency_hist11:51:240
6549991093,24cyclictest32741-21sh11:13:400
6549991092,29cyclictest20315-21taskset07:36:370
6549991092,29cyclictest20315-21taskset07:36:370
6549991083,24cyclictest28939-21/usr/sbin/munin12:01:460
6549991082,28cyclictest25026-21ssh09:13:530
6549991082,25cyclictest1314-21ssh09:28:050
6549991074,30cyclictest17362-21cstates09:01:390
6549991073,24cyclictest28924-21ssh09:21:210
6549991073,24cyclictest28924-21ssh09:21:210
6549991072,28cyclictest25233-21taskset11:01:420
6549991063,30cyclictest12472-21ssh10:40:410
6549991063,30cyclictest12472-21ssh10:40:410
6549991042,27cyclictest3179-21sh11:18:240
6549991042,27cyclictest3179-21sh11:18:240
6549991042,22cyclictest24554-21ssh11:00:560
6549991042,22cyclictest24554-21ssh11:00:560
65499910341,54cyclictest0-21swapper/007:51:590
6549991033,26cyclictest13902-21diskmemload10:34:520
6549991033,11cyclictest0-21swapper/010:41:340
6549991032,27cyclictest23347-21ssh10:05:220
6549991032,25cyclictest4178-21ssh12:14:480
65689910264,14cyclictest181rcu_preempt09:41:362
6549991024,27cyclictest12938-21/usr/sbin/munin09:47:010
6549991024,27cyclictest12938-21/usr/sbin/munin09:47:010
6549991023,32cyclictest8131-21unin-run07:01:230
6549991023,23cyclictest29065-21ssh10:14:340
6549991023,23cyclictest10468-21rm12:25:020
6549991023,23cyclictest10468-21rm12:25:020
6549991022,25cyclictest18407-21ssh09:57:090
6549991022,23cyclictest15034-21ssh11:38:020
65499910216,68cyclictest0-21swapper/009:10:580
65499910216,68cyclictest0-21swapper/009:10:580
6549991012,28cyclictest10300-21taskset08:42:010
6549991012,28cyclictest10300-21taskset08:42:010
65499910117,53cyclictest0-21swapper/011:56:530
65499910117,53cyclictest0-21swapper/011:56:530
6549991003,31cyclictest352-21runrttasks12:21:050
6549991003,25cyclictest6267-21cut08:31:430
654999995,64cyclictest0-21swapper/011:43:330
654999995,64cyclictest0-21swapper/011:43:330
654999994,7cyclictest0-21swapper/011:21:320
654999992,25cyclictest11950-21taskset08:47:050
654999992,21cyclictest5579-21ssh10:28:090
63522996,18sleep10-21swapper/106:55:541
654999983,9cyclictest0-21swapper/011:26:320
654999983,10cyclictest31664-21cstates12:06:400
654999983,10cyclictest31664-21cstates12:06:400
654999982,22cyclictest24227-21taskset11:53:350
656899978,63cyclictest18201-21ssh09:56:582
654999975,7cyclictest0-21swapper/008:17:090
654999973,23cyclictest29365-21taskset08:02:060
654999973,23cyclictest29365-21taskset08:02:060
654999972,23cyclictest13588-21taskset08:52:250
654999972,22cyclictest18281-21taskset07:29:370
654999964,7cyclictest0-21swapper/008:56:340
654999964,7cyclictest0-21swapper/008:56:340
654999963,6cyclictest0-21swapper/007:41:380
654999962,30cyclictest19241-21sshd10:51:400
654999954,30cyclictest23526-21/usr/sbin/munin07:46:530
6568999432,11cyclictest0-21swapper/207:51:342
654999944,21cyclictest16647-21taskset07:24:350
6549999437,50cyclictest0-21swapper/009:46:230
654999943,32cyclictest17934-21sed09:56:250
654999943,26cyclictest12252-21apt-get07:11:340
654999942,23cyclictest27782-21taskset07:57:230
6568999363,24cyclictest13902-21diskmemload11:56:042
654999933,32cyclictest14814-21head07:16:590
654999933,28cyclictest556-21unin-run08:16:230
654999933,27cyclictest9142-21latency_hist08:41:240
654999923,18cyclictest6070-21fschecks_count09:36:430
654999923,18cyclictest6070-21fschecks_count09:36:430
654999922,25cyclictest4786-21fschecks_time08:26:590
654999922,24cyclictest11176-21ntpq07:06:520
6568999171,13cyclictest29726-21cron10:16:212
654999913,30cyclictest4212-21latency_hist08:26:240
654999913,30cyclictest4212-21latency_hist08:26:240
6568998972,10cyclictest12727-21kworker/u19:0+events_unbound09:16:212
6560998969,12cyclictest300-21rs:main1
6560998969,12cyclictest300-21rs:main1
656099893,68cyclictest30268-21apt-get10:16:431
654999894,25cyclictest18680-21/usr/sbin/munin07:31:440
6568998846,13cyclictest181rcu_preempt07:01:342
6560998847,12cyclictest181rcu_preempt10:21:361
6560998847,12cyclictest181rcu_preempt10:21:361
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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