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2025-11-06 - 14:59
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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 Wed Nov 05, 2025 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2127221166,16sleep00-21swapper/007:08:020
214959910277,18cyclictest9324-21sh11:34:092
214959910277,18cyclictest9324-21sh11:34:092
21492991013,45cyclictest26309-21unixbench_multi10:04:251
2149299993,38cyclictest25649-21munin-run08:58:461
21492999679,11cyclictest995-21tune2fs10:19:091
2148599963,67cyclictest15946-21apt-get08:29:000
21495999572,17cyclictest13723-21apt-key08:23:492
21495999572,17cyclictest13723-21apt-key08:23:492
21492999370,16cyclictest299-21systemd-logind07:58:471
21492999370,16cyclictest299-21systemd-logind07:58:471
21495999262,20cyclictest19258-21apt-key08:38:502
21485999239,43cyclictest0-21swapper/011:49:010
21485999239,43cyclictest0-21swapper/011:49:010
21485999232,24cyclictest15191-21/usr/sbin/munin10:44:410
21495999167,14cyclictest0-21swapper/208:28:492
21485999129,54cyclictest352-21runrttasks09:47:090
21485999127,30cyclictest4188-21/usr/sbin/munin10:24:270
21485999127,30cyclictest4188-21/usr/sbin/munin10:24:270
21492999063,21cyclictest11052-21latency_hist12:33:501
21492999063,21cyclictest11052-21latency_hist12:33:501
21485999033,20cyclictest17712-21taskset08:34:070
21492998960,19cyclictest3005-21unixbench_singl09:19:241
21485998929,27cyclictest10223-21ssh09:34:190
21485998928,22cyclictest8062-21grep08:04:230
207902897,53sleep120883-21timerwakeupswit07:04:331
21485998831,26cyclictest30705-21ssh11:14:080
21485998826,25cyclictest12552-21rm12:35:150
21485998825,28cyclictest0-21swapper/011:59:080
21495998770,10cyclictest300-21in:imuxsock11:23:462
21495998762,15cyclictest0-21swapper/209:49:172
21495998738,31cyclictest9189-21cut08:09:102
21485998751,23cyclictest352-21runrttasks12:29:010
21485998751,23cyclictest352-21runrttasks12:29:010
21485998727,23cyclictest12386-21tr11:39:160
21495998663,12cyclictest0-21swapper/208:14:232
21495998662,12cyclictest0-21swapper/208:58:492
21492998662,18cyclictest8055-21kworker/u17:3+events_unbound12:18:451
21492998659,18cyclictest3801-21sh12:20:321
21492998655,10cyclictest1160-21sshd11:19:091
21495998567,11cyclictest0-21swapper/212:14:112
21495998564,15cyclictest21472-21cyclictest10:14:252
21495998561,17cyclictest22261-21kworker/u18:3+events_unbound11:08:452
21495998561,13cyclictest0-21swapper/208:39:392
21495998561,13cyclictest0-21swapper/208:39:392
21485998527,27cyclictest957-21taskset07:44:010
21485998527,25cyclictest5648-21/usr/sbin/munin12:24:130
21485998525,23cyclictest24441-21rm10:02:000
21485998525,23cyclictest24441-21rm10:02:000
21485998525,23cyclictest23971-21taskset11:01:000
21485998525,23cyclictest23971-21taskset11:01:000
21492998438,37cyclictest17978-21vmstat10:49:261
21492998438,37cyclictest17978-21vmstat10:49:261
21485998429,24cyclictest28495-21/usr/sbin/munin11:09:170
21485998425,29cyclictest27780-21ssh12:05:560
21485998425,26cyclictest25539-21taskset11:04:170
21485998424,27cyclictest6184-21sh11:28:560
21485998422,28cyclictest0-21swapper/011:25:560
21485998421,24cyclictest0-21swapper/007:09:110
21495998358,13cyclictest0-21swapper/211:03:492
21495998358,13cyclictest0-21swapper/211:03:492
21492998358,17cyclictest27746-21timerandwakeup07:24:221
21485998329,19cyclictest25351-21chrt07:18:590
21485998324,24cyclictest28694-21chrt09:06:200
21485998225,28cyclictest6603-21sh09:27:530
21485998223,22cyclictest31486-21chrt07:38:430
2088528220,42sleep220959-21grep07:04:342
2149599819,63cyclictest15448-21apt-get08:29:002
21495998158,13cyclictest0-21swapper/210:09:122
21495998157,12cyclictest0-21swapper/211:28:502
21485998129,22cyclictest32529-21ssh12:14:190
21485998127,21cyclictest14699-21sh11:44:020
21485998124,27cyclictest736-21sh10:18:550
21485998113,33cyclictest14108-21apt-get08:24:030
21495998052,17cyclictest0-21swapper/210:58:492
21492998019,41cyclictest5419-21switchtime09:24:201
21485998028,27cyclictest19405-21rm09:52:240
21485998028,23cyclictest8910-21runrttasks10:34:030
21485998028,23cyclictest8910-21runrttasks10:34:030
21485998025,18cyclictest11633-21/usr/sbin/munin10:39:200
21495997963,9cyclictest0-21swapper/208:53:482
21495997961,8cyclictest0-21swapper/209:59:222
21495997961,8cyclictest0-21swapper/209:59:222
21495997956,11cyclictest0-21swapper/210:48:492
21495997955,14cyclictest0-21swapper/211:18:482
21495997951,19cyclictest28903-21diskmemload12:28:592
21495997951,19cyclictest28903-21diskmemload12:28:592
2149599792,35cyclictest27572-21grep07:24:202
2149299796,33cyclictest17553-21ssh11:49:011
2149299796,33cyclictest17553-21ssh11:49:011
21492997959,13cyclictest11224-21kworker/u17:1-rpciod09:48:491
21492997942,13cyclictest0-21swapper/108:29:401
21485997927,45cyclictest31040-21chrt12:12:110
21485997927,45cyclictest31040-21chrt12:12:110
21485997927,24cyclictest1030-21tune2fs11:19:070
21485997926,23cyclictest24288-21/usr/sbin/munin08:54:070
21485997925,27cyclictest17040-21ssh10:49:060
21485997925,27cyclictest17040-21ssh10:49:060
21485997924,24cyclictest12979-21switchtime09:39:250
21485997924,24cyclictest12979-21switchtime09:39:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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