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2026-07-25 - 20:08
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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 Sat Jul 25, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37899911192,13cyclictest23886-21latency_hist11:06:201
287121089,34sleep12872-21ntp_states06:51:581
37859910792,8cyclictest0-21swapper/010:01:370
37899910646,36cyclictest0-21swapper/110:01:001
37899910561,35cyclictest0-21swapper/111:21:551
37859910310,84cyclictest4228-21ssh12:21:510
37859910310,84cyclictest4228-21ssh12:21:510
3785991023,75cyclictest11490-21apt-get08:56:330
3785991023,75cyclictest11490-21apt-get08:56:330
3789999874,15cyclictest0-21swapper/109:56:191
378999983,50cyclictest6018-21apt-get07:01:321
378999983,50cyclictest6018-21apt-get07:01:321
3789999752,37cyclictest4620-21latency_hist08:36:201
378599967,36cyclictest0-21swapper/012:11:380
3795999557,32cyclictest0-21swapper/210:26:462
3795999544,41cyclictest2876-21runrttasks11:25:302
3789999551,39cyclictest3777-21cyclictest10:33:531
3789999551,39cyclictest3777-21cyclictest10:33:531
3789999475,12cyclictest0-21swapper/108:56:201
3789999474,14cyclictest10927-21diskmemload12:21:371
3789999474,14cyclictest10927-21diskmemload12:21:371
3789999359,24cyclictest6057-21sh08:41:171
3789999352,33cyclictest0-21swapper/110:16:431
3795999269,12cyclictest0-21swapper/211:01:212
3795999269,12cyclictest0-21swapper/211:01:212
3795999252,33cyclictest0-21swapper/210:47:172
3795999252,33cyclictest0-21swapper/210:47:172
3795999220,29cyclictest21223-21ls11:01:352
3789999276,12cyclictest3777-21cyclictest08:57:351
3789999276,12cyclictest3777-21cyclictest08:57:351
36422928,55sleep23679-21munin-run06:56:192
3795999146,37cyclictest0-21swapper/209:05:152
3795999146,37cyclictest0-21swapper/209:05:152
3795999136,47cyclictest0-21swapper/209:56:542
3789999172,12cyclictest11456-21processes07:16:501
3789999172,12cyclictest11456-21processes07:16:501
3789999146,38cyclictest10927-21diskmemload11:12:131
3789999115,31cyclictest24712-21sh11:06:471
3795999053,31cyclictest3777-21cyclictest12:21:112
3789999048,34cyclictest0-21swapper/109:46:421
3789999048,34cyclictest0-21swapper/109:46:421
378599903,47cyclictest23512-21apt07:56:170
3785999011,70cyclictest30711-21apt-get08:16:320
3789998946,37cyclictest10927-21diskmemload11:35:391
378999894,31cyclictest10927-21diskmemload11:56:331
3789998929,53cyclictest7657-21modprobe08:46:171
378599894,39cyclictest15-21ksoftirqd/009:37:330
379599884,38cyclictest4537-21latency_hist08:36:202
379599884,28cyclictest11505-21ssh08:56:332
379599884,28cyclictest11505-21ssh08:56:332
379599883,26cyclictest26896-21modprobe12:06:172
3789998839,41cyclictest10927-21diskmemload11:53:481
3789998839,41cyclictest10927-21diskmemload11:53:481
3785998859,20cyclictest10927-21diskmemload09:11:420
3785998859,20cyclictest10927-21diskmemload09:11:420
379599875,29cyclictest30286-21latency_hist12:11:212
3795998746,34cyclictest0-21swapper/209:46:422
3795998746,34cyclictest0-21swapper/209:46:422
379599874,26cyclictest4737-21grep08:36:362
379599873,39cyclictest23835-21apt-key07:56:212
3789998763,14cyclictest0-21swapper/108:26:411
3789998763,14cyclictest0-21swapper/108:26:411
378999872,35cyclictest2372-21ssh10:30:071
3785998759,19cyclictest7552-21latency_hist07:06:210
3785998759,19cyclictest7552-21latency_hist07:06:210
3785998719,55cyclictest17077-21apt09:06:170
3785998719,55cyclictest17077-21apt09:06:170
379599864,34cyclictest24571-21ntp_kernel_pll_07:57:312
379599864,34cyclictest24571-21ntp_kernel_pll_07:57:312
3795998640,39cyclictest0-21swapper/211:21:172
3795998636,43cyclictest0-21swapper/210:16:412
3795998634,45cyclictest0-21swapper/210:36:562
379599863,40cyclictest18014-21idleruntime-cro11:51:172
379599863,39cyclictest21785-21latency11:56:452
379599863,31cyclictest12969-21/usr/sbin/munin07:21:472
379599862,38cyclictest352-21runrttasks09:10:482
378999864,35cyclictest3976-21latency11:26:451
378999863,40cyclictest30068-21sh10:21:451
378999863,40cyclictest30068-21sh10:21:451
3789998615,27cyclictest29717-21ls09:26:441
3785998663,16cyclictest10927-21diskmemload10:46:550
3785998663,16cyclictest10927-21diskmemload10:46:550
3785998658,18cyclictest3665-21apt-key12:21:200
3785998641,24cyclictest15-21ksoftirqd/007:09:560
378599863,55cyclictest15-21ksoftirqd/007:25:570
3795998562,12cyclictest0-21swapper/208:26:402
3795998562,12cyclictest0-21swapper/208:26:402
379599855,28cyclictest27018-21/usr/sbin/munin11:11:402
379599854,37cyclictest32670-21latency09:31:452
379599854,36cyclictest30848-21sort08:17:332
379599853,26cyclictest29594-21fschecks_time09:26:412
3789998566,9cyclictest0-21swapper/107:26:511
3789998563,11cyclictest0-21swapper/109:41:541
378999853,36cyclictest352-21runrttasks10:05:261
378599859,45cyclictest15-21ksoftirqd/012:03:000
379599844,37cyclictest30565-21latency_hist08:16:222
379599844,35cyclictest23404-21modprobe10:11:172
3795998442,35cyclictest4618-21sh11:26:582
379599843,28cyclictest19418-21grep11:51:572
379599843,28cyclictest19418-21grep11:51:572
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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