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2026-08-05 - 21:13
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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 Aug 05, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34439911847,19cyclictest0-21swapper/210:10:542
314321115,15sleep00-21swapper/006:53:480
34439910849,15cyclictest9588-21gpgv11:30:352
34439910742,11cyclictest0-21swapper/211:25:352
34439910742,11cyclictest0-21swapper/211:25:352
34289910726,50cyclictest0-21swapper/008:57:580
3443999575,14cyclictest352-21runrttasks11:05:322
3428999040,22cyclictest6267-21rm09:40:340
3443998510,10cyclictest0-21swapper/209:51:032
3438998565,10cyclictest8379-21/usr/sbin/munin10:36:061
3428998555,21cyclictest4124-21latency_hist07:00:360
3428998555,21cyclictest4124-21latency_hist07:00:360
3443998455,20cyclictest28343-21kernelversion12:00:592
3428998459,16cyclictest19849-21kworker/u19:1-ext4-rsv-conversion09:51:020
3428998453,21cyclictest10513-21latency_hist10:40:350
3438998359,14cyclictest10744-21cpuspeed10:40:491
3438998256,19cyclictest5253-21latency_hist07:05:361
3438998243,30cyclictest405-21sshd11:15:271
3428998260,15cyclictest58-21kcompactd011:55:340
3428998257,17cyclictest4593-21sh12:15:520
344399813,68cyclictest10054-21ssh11:30:572
3443998128,31cyclictest7774-21latency_hist07:25:362
3438998149,22cyclictest19400-21diskmemload11:36:061
3438998149,22cyclictest19400-21diskmemload11:36:061
342899812,33cyclictest31830-21timerandwakeup12:06:070
327028111,45sleep13284-21modprobe06:55:321
3443998055,18cyclictest3416-21cyclictest10:21:592
3443998055,18cyclictest3416-21cyclictest10:21:592
3438998019,8cyclictest181rcu_preempt10:20:321
3428998061,13cyclictest2374-21systemd-journal12:05:320
3438997961,9cyclictest6620-21ssh12:19:221
3438997956,14cyclictest21893-21kworker/u17:2-nfsiod11:08:161
3438997956,14cyclictest21893-21kworker/u17:2-nfsiod11:08:161
3438997952,18cyclictest23551-21latency_hist09:05:351
342899796,21cyclictest0-21swapper/009:41:080
342899796,21cyclictest0-21swapper/009:41:080
3428997960,10cyclictest0-21swapper/010:47:080
3443997863,9cyclictest19253-21kworker/u17:1-nfsiod10:10:322
3443997857,15cyclictest298-21in:imuxsock09:47:172
3443997842,10cyclictest181rcu_preempt12:13:042
3438997853,18cyclictest14223-21latency_hist08:15:351
3438997853,16cyclictest0-21swapper/108:45:341
3438997848,20cyclictest16529-21sh09:56:041
3438997848,20cyclictest16529-21sh09:56:041
3428997854,14cyclictest9833-21ssh11:30:360
3443997754,16cyclictest15105-21ssh10:46:122
3443997750,19cyclictest15590-21munin-plugin-st11:40:342
3443997750,19cyclictest15590-21munin-plugin-st11:40:342
3438997756,13cyclictest0-21swapper/110:01:571
3438997752,16cyclictest277-21dbus-daemon09:20:331
3443997650,19cyclictest19400-21diskmemload11:54:492
3443997640,9cyclictest181rcu_preempt10:05:332
3438997654,15cyclictest3416-21cyclictest12:11:081
3428997640,31cyclictest14139-21kworker/u19:108:20:350
344399752,32cyclictest15908-21ssh11:40:432
3443997523,20cyclictest31184-21ssh11:11:092
343899754,28cyclictest10087-21sendmail07:45:321
3428997554,14cyclictest3416-21cyclictest10:28:460
3443997427,13cyclictest181rcu_preempt12:20:352
3438997448,19cyclictest544-21cron08:55:331
3438997448,19cyclictest544-21cron08:55:331
3428997448,18cyclictest24381-21ssh11:00:530
3428997419,30cyclictest0-21swapper/010:58:010
3428997417,28cyclictest3037-21sh12:12:350
3428997417,25cyclictest17355-21rm11:42:090
344399735,44cyclictest27680-21latency_hist12:00:342
3443997354,13cyclictest9140-21munin-run09:45:322
3443997354,13cyclictest9140-21munin-run09:45:322
3443997352,15cyclictest4182-21latency_hist07:00:362
3443997352,15cyclictest4182-21latency_hist07:00:362
343899732,15cyclictest16190-21fschecks_time11:40:531
3438997319,25cyclictest3059-21sh09:35:211
3438997319,25cyclictest3059-21sh09:35:211
3428997351,15cyclictest3416-21cyclictest10:22:550
3428997351,15cyclictest3416-21cyclictest10:22:550
3428997337,28cyclictest31848-21kworker/u17:3+nfsiod09:34:410
3428997337,28cyclictest31848-21kworker/u17:3+nfsiod09:34:410
342899733,36cyclictest352-21runrttasks09:47:580
3428997333,30cyclictest0-21swapper/012:20:570
3443997249,13cyclictest0-21swapper/211:05:492
3443997249,13cyclictest0-21swapper/211:05:492
3443997247,7cyclictest181rcu_preempt12:20:492
3443997233,12cyclictest181rcu_preempt09:09:382
344399722,20cyclictest16631-21latency_hist08:35:322
3438997254,10cyclictest23423-21rm11:52:171
3438997250,16cyclictest21455-21sh10:55:541
3438997249,15cyclictest3416-21cyclictest12:05:361
3438997247,16cyclictest297-21systemd-logind08:35:331
343899722,33cyclictest5660-21cron07:10:321
3438997218,21cyclictest719-21sh09:29:271
3438997215,16cyclictest31-21ksoftirqd/111:01:041
3438997212,23cyclictest30180-21seq09:21:451
3428997255,11cyclictest11396-21systemd-run07:55:350
3428997245,17cyclictest0-21swapper/008:10:340
342899723,36cyclictest1091-21fschecks_time11:15:550
342899722,24cyclictest137972sshd08:11:310
344399714,41cyclictest31537-21ntp_states12:06:032
3443997142,22cyclictest19849-21kworker/u19:1+nfsiod09:30:202
3443997142,12cyclictest181rcu_preempt10:56:082
3443997141,12cyclictest28372-21fschecks_count10:15:552
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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