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2026-07-14 - 19:46
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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 Tue Jul 14, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4042215911,109sleep03757-21/usr/sbin/munin06:52:290
5272991153,90cyclictest27990-21apt-get09:22:241
394221149,69sleep23972-21fschecks_count06:52:272
52619911246,15cyclictest2374-21systemd-journal10:57:360
5272991083,77cyclictest2382-21apt-get10:27:311
5272991083,77cyclictest2382-21apt-get10:27:311
52619910252,10cyclictest2366-21ssh09:32:360
5261999754,34cyclictest16272-21grep07:27:240
528099929,64cyclictest20683-21apt-get10:57:232
527299922,61cyclictest12802-21apt-get07:17:221
527299922,61cyclictest12802-21apt-get07:17:221
509929211,53sleep15128-21idleruntime-cro06:57:031
5280999112,62cyclictest12802-21apt-get07:17:172
5280999112,62cyclictest12802-21apt-get07:17:172
426129124,40sleep30-21swapper/306:52:373
5280998965,15cyclictest10911-21ssh09:47:252
5280998965,15cyclictest10911-21ssh09:47:252
528799883,52cyclictest0-21swapper/309:22:243
5280998863,16cyclictest25418-21latency_hist10:12:052
527299884,34cyclictest19805-21fschecks_count10:02:251
527299883,37cyclictest15589-21idleruntime11:42:261
527299883,24cyclictest9126-21processes10:37:361
527299883,24cyclictest28796-21sort08:07:051
5261998865,14cyclictest12405-21diskmemload11:56:550
5280998758,20cyclictest12405-21diskmemload10:29:532
5280998758,20cyclictest12405-21diskmemload10:29:532
528099873,37cyclictest39-21ksoftirqd/209:53:472
5272998746,34cyclictest12405-21diskmemload11:22:341
527299873,38cyclictest352-21runrttasks10:42:421
5261998727,42cyclictest19726-21ssh09:07:390
5261998727,42cyclictest19726-21ssh09:07:390
528099867,57cyclictest39-21ksoftirqd/210:13:532
5272998663,16cyclictest12033-21ssh11:37:051
527299863,34cyclictest32202-21cpu08:17:201
527299863,34cyclictest32202-21cpu08:17:201
527299863,26cyclictest17893-21rm09:05:361
5272998632,46cyclictest0-21swapper/109:52:251
528799859,61cyclictest12810-21chrt07:17:173
528799859,61cyclictest12810-21chrt07:17:173
5280998551,11cyclictest181rcu_preempt12:00:082
527299853,37cyclictest27537-21ssh10:15:001
527299852,27cyclictest15946-21ls07:27:051
528099846,32cyclictest39-21ksoftirqd/211:27:022
528099844,45cyclictest39-21ksoftirqd/207:27:382
528099842,54cyclictest39-21ksoftirqd/211:12:192
5280998413,54cyclictest27990-21apt-get09:22:232
527299844,37cyclictest6749-21/usr/sbin/munin11:27:291
527299844,36cyclictest769-21/usr/sbin/munin12:12:131
527299844,36cyclictest769-21/usr/sbin/munin12:12:131
527299843,34cyclictest352-21runrttasks08:54:111
527299843,30cyclictest25455-21processes09:17:361
527299843,29cyclictest9702-21latency_hist12:27:051
527299843,29cyclictest9702-21latency_hist12:27:051
527299843,29cyclictest352-21runrttasks10:19:421
5272998420,53cyclictest0-21swapper/111:02:291
5261998460,14cyclictest18331-21cpuspeed11:47:190
527299834,38cyclictest9774-21idleruntime07:09:101
527299834,12cyclictest0-21swapper/110:22:141
5272998335,40cyclictest0-21swapper/110:37:061
527299833,41cyclictest6454-21fschecks_time08:37:241
527299833,35cyclictest1790-21uniq09:32:231
5261998368,9cyclictest5107-21ntp_offset08:32:320
5261998362,15cyclictest30397-21latency_hist08:12:050
5261998355,19cyclictest12050-21awk10:42:340
5261998351,12cyclictest181rcu_preempt11:37:180
5272998258,18cyclictest28977-21sh11:10:571
5272998258,18cyclictest28977-21sh11:10:571
527299824,23cyclictest29147-21fschecks_count08:07:221
5272998238,37cyclictest0-21swapper/107:32:211
527299823,36cyclictest29674-21/usr/sbin/munin11:12:281
527299823,36cyclictest11583-21sendmail_mailqu07:12:371
527299823,32cyclictest352-21runrttasks10:09:171
5272998231,42cyclictest0-21swapper/111:17:211
527299822,35cyclictest12705-21/usr/sbin/munin08:57:341
527299822,35cyclictest12705-21/usr/sbin/munin08:57:341
527299822,29cyclictest5544-21grep08:32:401
527299822,28cyclictest9325-21latency_hist08:47:051
5280998162,12cyclictest15937-21sshd11:42:362
528099815,51cyclictest39-21ksoftirqd/207:16:272
5280998138,9cyclictest0-21swapper/208:43:462
527299814,35cyclictest352-21runrttasks07:01:121
527299814,35cyclictest10062-21find08:47:351
527299814,33cyclictest21144-21fschecks_time07:42:241
527299813,38cyclictest7452-21taskset09:42:061
527299813,38cyclictest7452-21taskset09:42:061
527299813,38cyclictest12263-21ssh11:37:171
527299813,34cyclictest2374-21systemd-journal12:19:261
527299813,33cyclictest17318-21latency_hist10:52:051
527299813,32cyclictest25705-21ssh11:58:411
527299813,29cyclictest4319-21latency_hist08:32:021
5261998166,9cyclictest15-21ksoftirqd/010:37:270
5261998150,9cyclictest181rcu_preempt11:27:180
5280998037,8cyclictest181rcu_preempt09:59:192
5280998034,14cyclictest181rcu_preempt12:04:302
527299804,34cyclictest13259-21apt09:52:021
527299804,34cyclictest13259-21apt09:52:021
527299804,30cyclictest352-21runrttasks07:50:581
527299803,38cyclictest30242-21/usr/sbin/munin12:07:191
527299803,37cyclictest21077-21fschecks_count10:57:471
527299803,36cyclictest16539-21/usr/sbin/munin09:57:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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