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2026-06-22 - 15:11
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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 Jun 22, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23843216412,102sleep023537-21/usr/sbin/munin06:54:010
250469911327,27cyclictest0-21swapper/008:03:440
25062991044,45cyclictest3565-21/usr/sbin/munin09:58:572
250629910388,11cyclictest58-21kcompactd010:48:482
250629910237,13cyclictest0-21swapper/207:33:582
250629910237,13cyclictest0-21swapper/207:33:582
250579910142,52cyclictest0-21swapper/112:03:451
25046991015,54cyclictest29998-21apt-get09:48:550
25046991015,54cyclictest29998-21apt-get09:48:550
250629910050,43cyclictest0-21swapper/210:04:082
2506299993,43cyclictest27260-21apt-get10:38:482
25062999923,27cyclictest8429-21diskmemload11:53:562
25057999937,8cyclictest0-21swapper/109:09:011
25057999738,8cyclictest0-21swapper/111:34:101
25057999734,7cyclictest0-21swapper/109:34:091
25057999734,7cyclictest0-21swapper/109:34:091
2506299964,34cyclictest352-21runrttasks09:45:232
2506299964,34cyclictest352-21runrttasks09:45:232
25057999640,10cyclictest0-21swapper/107:43:451
25046999611,51cyclictest0-21swapper/011:33:550
25057999535,10cyclictest0-21swapper/107:58:511
25057999534,8cyclictest0-21swapper/108:34:061
2505799953,45cyclictest12742-21cat07:58:371
25046999518,30cyclictest28877-21/usr/sbin/munin07:08:510
25046999516,29cyclictest20083-21grep11:19:010
25057999437,7cyclictest0-21swapper/109:53:501
25057999436,8cyclictest0-21swapper/111:28:531
2505799943,44cyclictest4066-21grep09:58:591
25062999346,10cyclictest22958-21/usr/sbin/munin12:18:512
2506299934,36cyclictest25828-21ssh11:28:542
25057999334,15cyclictest0-21swapper/109:24:061
2505799933,35cyclictest25712-21/usr/sbin/munin08:38:501
2505799933,35cyclictest25712-21/usr/sbin/munin08:38:501
25057999331,11cyclictest0-21swapper/111:43:541
25057999329,12cyclictest0-21swapper/108:44:101
25057999329,11cyclictest0-21swapper/109:44:081
25057999329,11cyclictest0-21swapper/109:44:081
2505799932,36cyclictest25236-21wc06:58:501
25046999369,18cyclictest12216-21kworker/u18:3+events_unbound08:13:330
25046999326,31cyclictest0-21swapper/011:58:430
25046999326,31cyclictest0-21swapper/011:58:430
25057999238,7cyclictest0-21swapper/111:09:051
25057999238,7cyclictest0-21swapper/111:09:051
2505799923,33cyclictest29978-21/usr/sbin/munin09:49:241
2505799923,33cyclictest29978-21/usr/sbin/munin09:49:241
25057999229,9cyclictest0-21swapper/111:04:081
25046999247,33cyclictest0-21swapper/012:08:360
25057999139,8cyclictest0-21swapper/109:21:491
25057999138,11cyclictest3217-21if_eth007:28:551
25057999138,11cyclictest3217-21if_eth007:28:551
25057999136,13cyclictest0-21swapper/110:03:521
25057999134,8cyclictest0-21swapper/110:58:431
25057999134,8cyclictest0-21swapper/110:58:431
25057999133,9cyclictest0-21swapper/110:28:461
25057999133,8cyclictest0-21swapper/107:23:491
2505799913,35cyclictest24545-21/usr/sbin/munin10:34:051
2505799913,34cyclictest32237-21/usr/sbin/munin08:58:441
2505799913,32cyclictest32472-21sed07:18:581
25057999130,11cyclictest0-21swapper/107:38:351
25057999130,11cyclictest0-21swapper/107:38:351
2504699913,79cyclictest27907-21taskset10:39:000
25046999123,40cyclictest10867-21fschecks_time11:03:540
25046999118,28cyclictest7954-21apt-get07:43:580
2505799905,31cyclictest2334-21/usr/sbin/munin10:49:301
2505799904,31cyclictest5020-21/usr/sbin/munin11:48:491
25057999034,7cyclictest0-21swapper/111:13:581
25057999033,9cyclictest0-21swapper/109:38:391
2505799903,36cyclictest23920-21ls12:19:081
2505799903,34cyclictest8770-21/usr/sbin/munin09:14:061
2505799903,34cyclictest20208-21grep08:19:101
2505799903,33cyclictest22662-21cstates11:23:511
2505799903,33cyclictest22662-21cstates11:23:511
2505799894,31cyclictest20615-21ssh11:19:111
2505799893,42cyclictest28970-21timerwakeupswit10:39:381
2505799893,37cyclictest11409-21if_eth011:58:561
2505799893,37cyclictest11409-21if_eth011:58:561
2505799893,34cyclictest5538-21runrttasks09:08:351
2505799893,34cyclictest31272-21timerandwakeup07:14:091
2505799893,34cyclictest26809-21munin-node10:43:421
2505799892,33cyclictest16113-21/usr/sbin/munin10:19:001
2504699898,48cyclictest0-21swapper/011:23:490
2504699898,48cyclictest0-21swapper/011:23:490
25046998957,22cyclictest13825-21fschecks_count11:08:520
25046998957,22cyclictest13825-21fschecks_count11:08:520
25046998955,25cyclictest668-21ssh08:59:100
25046998921,27cyclictest20711-21rm10:27:040
25046998920,21cyclictest11980-21ssh09:18:530
25062998856,9cyclictest181rcu_preempt06:58:492
2505799884,33cyclictest32135-21/usr/sbin/munin11:39:041
2505799884,32cyclictest10568-21head07:49:251
2505799883,39cyclictest6404-21ssh10:56:081
2505799883,33cyclictest28977-21cpuspeed07:08:501
2505799883,33cyclictest17880-21taskset12:09:071
2505799883,32cyclictest12932-21ssh10:13:561
25057998827,12cyclictest0-21swapper/107:08:361
25057998827,12cyclictest0-21swapper/107:08:361
2505799873,32cyclictest16321-21fschecks_time08:08:541
2505799873,31cyclictest14619-21fschecks_count08:03:541
25057998732,7cyclictest0-21swapper/107:38:511
25057998725,15cyclictest0-21swapper/111:58:031
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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