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2026-03-20 - 22:42
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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 Mar 20, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
314699910420,39cyclictest8587-21runrttasks11:48:430
314769910058,37cyclictest31458-21cyclictest11:26:081
3146999993,80cyclictest21072-21apt-get08:10:440
3146999973,62cyclictest22998-21apt-get10:25:070
31481999575,11cyclictest0-21swapper/209:09:532
31481999575,11cyclictest0-21swapper/209:09:532
31481999571,16cyclictest28555-21ssh09:40:192
31481999471,13cyclictest0-21swapper/212:00:102
31481999470,11cyclictest0-21swapper/207:30:142
31481999470,11cyclictest0-21swapper/207:30:142
3147699933,82cyclictest0-21swapper/107:45:051
31481999272,13cyclictest0-21swapper/208:24:542
31481999272,11cyclictest0-21swapper/207:15:132
31481999173,8cyclictest0-21swapper/208:45:262
31481999173,8cyclictest0-21swapper/208:45:262
31481999173,8cyclictest0-21swapper/207:41:002
31481999173,10cyclictest0-21swapper/207:45:112
31476999128,36cyclictest352-21runrttasks09:33:031
31481999073,8cyclictest0-21swapper/208:56:342
31481999072,8cyclictest0-21swapper/208:15:252
31481999066,15cyclictest19569-21ssh10:19:542
31481999025,36cyclictest0-21swapper/207:25:512
31481999025,32cyclictest0-21swapper/211:18:402
3147699903,74cyclictest0-21swapper/108:25:041
3146999902,46cyclictest24586-21modprobe08:20:170
31476998967,12cyclictest0-21swapper/112:00:241
31476998944,38cyclictest0-21swapper/110:40:261
31476998944,38cyclictest0-21swapper/110:40:261
3147699893,76cyclictest0-21swapper/110:45:061
3147699893,74cyclictest0-21swapper/111:20:031
3146999893,70cyclictest30537-21apt-get12:25:090
31481998871,8cyclictest0-21swapper/208:35:182
31481998871,8cyclictest0-21swapper/208:35:182
3147699883,79cyclictest0-21swapper/110:00:101
3147699883,79cyclictest0-21swapper/110:00:101
31469998823,46cyclictest31458-21cyclictest09:27:520
31469998823,46cyclictest31458-21cyclictest09:27:520
31481998763,15cyclictest31458-21cyclictest08:11:352
31481998749,30cyclictest7550-21sh10:00:072
31481998749,30cyclictest7550-21sh10:00:072
31481998748,32cyclictest15690-21sh09:19:542
3147699874,74cyclictest0-21swapper/111:30:041
3148599865,40cyclictest26260-21chrt11:24:513
31481998643,36cyclictest18642-21sh09:24:512
31481998628,32cyclictest0-21swapper/208:28:452
31476998670,11cyclictest31458-21cyclictest07:20:291
3147699863,71cyclictest0-21swapper/108:40:021
3147699863,71cyclictest0-21swapper/108:40:021
31469998651,19cyclictest31013-21apt-get08:40:060
31469998651,19cyclictest31013-21apt-get08:40:060
31481998541,37cyclictest0-21swapper/210:05:052
3148199853,73cyclictest29652-21apt-get11:30:042
3148199852,74cyclictest0-21swapper/209:00:042
31476998565,9cyclictest0-21swapper/111:14:541
31476998565,12cyclictest0-21swapper/112:34:541
3147699853,69cyclictest0-21swapper/107:10:051
3147699852,73cyclictest0-21swapper/107:30:041
3147699852,73cyclictest0-21swapper/107:30:041
31481998448,30cyclictest18911-21ntp_offset12:05:202
31481998448,30cyclictest18911-21ntp_offset12:05:202
3148199843,71cyclictest0-21swapper/207:20:062
3148199843,46cyclictest18720-21seq08:01:522
3148199842,48cyclictest17179-21seq07:57:422
3148199842,48cyclictest17179-21seq07:57:422
3147699843,71cyclictest0-21swapper/111:55:081
31481998357,13cyclictest181rcu_preempt08:50:092
31481998357,13cyclictest181rcu_preempt08:50:092
31481998346,30cyclictest301-21mailstats10:40:242
31481998346,30cyclictest301-21mailstats10:40:242
3148199833,70cyclictest0-21swapper/208:05:042
3148199833,70cyclictest0-21swapper/208:05:042
31476998365,11cyclictest0-21swapper/110:10:251
31476998365,11cyclictest0-21swapper/110:10:251
31476998348,27cyclictest0-21swapper/111:00:261
3147699834,69cyclictest0-21swapper/110:35:021
3147699834,69cyclictest0-21swapper/110:20:011
31481998265,8cyclictest0-21swapper/211:20:142
31481998243,33cyclictest30204-21latency_hist12:24:542
31481998243,33cyclictest30204-21latency_hist12:24:542
31481998240,35cyclictest0-21swapper/209:35:032
31481998240,35cyclictest0-21swapper/209:35:032
3148199823,73cyclictest0-21swapper/211:30:032
31476998250,23cyclictest13417-21cron10:09:511
3147699824,66cyclictest0-21swapper/112:20:071
3147699824,66cyclictest0-21swapper/112:20:071
3147699823,69cyclictest0-21swapper/111:45:071
3147699822,46cyclictest6067-21/usr/sbin/munin07:25:161
31469998224,24cyclictest30966-21diskmemload11:30:430
3147699813,70cyclictest9335-21ssh11:50:051
31476998121,29cyclictest0-21swapper/110:58:141
3146999813,37cyclictest23496-21timerandwakeup08:15:260
3148199803,65cyclictest18980-21ssh09:25:062
3148199803,65cyclictest18980-21ssh09:25:062
3147699803,69cyclictest0-21swapper/108:35:061
3147699803,69cyclictest0-21swapper/108:35:061
31476998034,38cyclictest0-21swapper/112:10:261
3148199793,71cyclictest0-21swapper/210:45:042
3148199793,47cyclictest0-21swapper/209:31:052
3147699794,70cyclictest0-21swapper/109:35:081
3147699794,70cyclictest0-21swapper/109:35:081
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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