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2026-06-07 - 19:20
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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 Sun Jun 07, 2026 12:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4692214211,83sleep04712-21sed06:59:380
4792991243,89cyclictest10028-21apt-get09:49:502
4792991243,89cyclictest10028-21apt-get09:49:502
3005421160,22sleep130057-21kernelversion12:09:591
4792991113,82cyclictest25254-21ssh10:14:492
4792991073,81cyclictest25943-21apt-get11:09:532
47849910453,44cyclictest14460-21/usr/sbin/munin10:50:071
47929910255,39cyclictest16016-21sh09:05:092
47929910214,61cyclictest17634-21apt-get11:49:502
47929910214,61cyclictest17634-21apt-get11:49:502
47849910150,46cyclictest4762-21cyclictest11:19:361
479299992,28cyclictest16726-21taskset07:34:422
4784999942,8cyclictest0-21swapper/110:19:541
4792999633,40cyclictest0-21swapper/209:57:412
478499963,37cyclictest3108-21/usr/sbin/munin12:19:561
4784999632,20cyclictest23478-21fschecks_time07:54:571
4774999576,13cyclictest2374-21systemd-journal09:49:340
478499944,37cyclictest6335-21latency_hist07:04:361
478499944,37cyclictest6335-21latency_hist07:04:361
4792999344,41cyclictest0-21swapper/211:00:122
4792999344,41cyclictest0-21swapper/211:00:122
479299933,6cyclictest0-21swapper/209:39:492
478499933,37cyclictest9193-21grep08:49:551
478499932,41cyclictest32045-21timerandwakeup08:20:081
4792999239,45cyclictest0-21swapper/209:24:522
4784999237,15cyclictest298-21in:imuxsock07:14:351
479299913,61cyclictest712-21modprobe08:25:132
4784999140,15cyclictest24008-21sh10:12:441
4784999140,15cyclictest24008-21sh10:12:441
384929115,39sleep10-21swapper/106:55:151
479299903,37cyclictest755-21ssh12:15:042
479299903,30cyclictest15965-21/usr/sbin/munin09:59:512
479299902,31cyclictest10364-21latency_hist08:54:372
4774999068,14cyclictest18080-21latency_hist09:09:360
42942906,60sleep20-21swapper/206:55:242
479299893,74cyclictest31443-21cut10:24:562
479299893,6cyclictest0-21swapper/207:16:242
4784998941,13cyclictest11987-21diskmemload11:31:211
4784998939,13cyclictest22318-21switchtime07:50:091
478499893,72cyclictest25943-21apt-get11:10:001
479299883,35cyclictest11644-21fschecks_count11:39:552
4784998841,14cyclictest18028-21sh10:02:471
479999877,60cyclictest26021-21taskset11:09:583
479299873,6cyclictest0-21swapper/208:40:422
479299873,30cyclictest31813-21ntpq08:20:012
479299873,28cyclictest18336-21/usr/sbin/munin07:39:502
479299863,37cyclictest8783-21/usr/sbin/munin07:09:522
479299863,33cyclictest1925-21/usr/sbin/munin09:35:132
479299863,22cyclictest14417-21sh11:44:482
479299863,22cyclictest14417-21sh11:44:482
479299853,8cyclictest0-21swapper/211:29:452
479299853,36cyclictest14837-21kworker/u19:207:29:342
479299853,36cyclictest14837-21kworker/u19:207:29:342
479299853,33cyclictest19094-21seq09:10:072
479299853,29cyclictest23056-21latency_hist07:54:372
479299853,26cyclictest30815-21ssh12:10:262
479299852,34cyclictest2769-21/usr/sbin/munin08:30:012
4784998567,11cyclictest416-21ssh11:20:101
4784998564,15cyclictest745-21latency_hist09:34:381
4784998558,20cyclictest5430-21latency_hist08:39:361
478499853,40cyclictest8444-21latency_hist07:09:361
4774998528,47cyclictest6281-21cron07:04:340
4774998528,47cyclictest6281-21cron07:04:340
4792998460,18cyclictest21357-21journal-offline07:49:352
4792998443,33cyclictest0-21swapper/208:49:362
479299844,29cyclictest21263-21/usr/sbin/munin09:15:012
479299843,34cyclictest1-21systemd11:24:342
479299843,33cyclictest7242-21/usr/sbin/munin09:44:592
4774998461,16cyclictest17418-21apt-key11:49:380
4774998461,16cyclictest17418-21apt-key11:49:380
4774998423,26cyclictest181rcu_preempt07:09:460
479299834,30cyclictest16692-21/usr/sbin/munin10:55:152
479299833,8cyclictest0-21swapper/207:29:502
479299833,8cyclictest0-21swapper/207:29:502
479299833,6cyclictest0-21swapper/208:04:512
479299833,32cyclictest3660-21/usr/sbin/munin12:20:022
479299833,32cyclictest29108-21ssh11:14:532
479299833,31cyclictest3969-21ssh10:33:202
479299833,31cyclictest3969-21ssh10:33:202
4784998363,15cyclictest4762-21cyclictest10:59:341
479299824,36cyclictest15013-21ssh09:04:352
479299824,36cyclictest15013-21ssh09:04:352
479299824,35cyclictest24362-21ssh12:00:072
479299823,8cyclictest0-21swapper/210:09:482
479299823,8cyclictest0-21swapper/210:09:482
479299823,7cyclictest0-21swapper/207:54:502
4792998237,39cyclictest0-21swapper/211:09:332
479299823,40cyclictest7913-21df_inode10:39:532
479299823,40cyclictest7913-21df_inode10:39:532
479299823,33cyclictest3302-21/usr/sbin/munin11:25:092
479299823,33cyclictest19188-21/usr/sbin/munin10:04:542
479299823,32cyclictest26681-21/usr/sbin/munin12:04:502
479299823,31cyclictest9148-21/usr/sbin/munin11:35:072
479299823,31cyclictest28581-21/usr/sbin/munin08:10:032
479299823,30cyclictest5531-21grep07:00:062
479299823,30cyclictest5531-21grep07:00:062
479299823,29cyclictest25405-21grep08:00:072
479299823,29cyclictest25405-21grep08:00:072
479299823,23cyclictest6782-21grep12:25:062
479299822,6cyclictest0-21swapper/208:34:462
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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