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2026-08-02 - 21:18
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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 Aug 02, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28564991124,31cyclictest28437-21latency_hist06:55:490
285649910948,55cyclictest22251-21/usr/sbin/munin09:26:570
285649910938,8cyclictest0-21swapper/007:50:450
285649910753,48cyclictest11925-21ssh10:01:180
285649910742,59cyclictest3902-21fschecks_time08:56:090
28564991063,34cyclictest1103-21ntpq11:31:120
285649910535,8cyclictest0-21swapper/009:10:480
285769910455,39cyclictest1-21systemd11:47:181
285649910238,8cyclictest0-21swapper/011:05:480
28564991022,40cyclictest32066-21chrt09:41:150
28564991013,42cyclictest3266-21diskmemload12:22:440
285649910036,10cyclictest10483-21ssh09:59:330
28564991003,25cyclictest21806-21kernelversion08:11:120
28564999940,8cyclictest0-21swapper/007:55:560
28564999928,20cyclictest10541-21sort07:36:130
28564999925,22cyclictest28157-21cron09:35:440
2856499986,26cyclictest24001-21apt-get11:16:000
2856499986,26cyclictest24001-21apt-get11:16:000
2856499984,36cyclictest8494-21/usr/sbin/munin07:31:190
28564999816,27cyclictest5670-21cut09:51:210
2858499973,36cyclictest10417-21rm11:47:202
2856499973,32cyclictest5786-21/usr/sbin/munin10:45:550
28564999726,24cyclictest9862-21kworker/u17:0+nfsiod10:29:090
28564999726,24cyclictest9862-21kworker/u17:0+nfsiod10:29:090
28584999647,38cyclictest0-21swapper/210:05:472
2856499963,47cyclictest30532-21ssh12:20:470
2856499963,47cyclictest30532-21ssh12:20:470
2856499953,35cyclictest6567-21apt-get09:00:540
2856499953,32cyclictest28773-21fschecks_count09:36:100
2856499953,32cyclictest28773-21fschecks_count09:36:100
28584999475,12cyclictest32165-21latency_hist10:35:482
28576999469,17cyclictest31715-21ssh12:22:341
2856499944,34cyclictest28308-21latency08:31:080
2856499944,31cyclictest32442-21/usr/sbin/munin10:36:050
2856499943,35cyclictest2217-21ssh09:46:040
2856499943,35cyclictest2217-21ssh09:46:040
2856499934,27cyclictest20769-21/usr/sbin/munin11:11:100
2856499932,40cyclictest10683-21kworker/u19:1+rpciod10:35:160
28584999250,34cyclictest0-21swapper/212:25:482
2856499924,35cyclictest18322-21sh11:06:120
2856499924,35cyclictest18322-21sh11:06:120
2856499924,33cyclictest28968-21fschecks_time06:56:080
2856499923,34cyclictest27239-21grep11:21:070
2856499923,27cyclictest352-21runrttasks10:07:160
28584999149,35cyclictest0-21swapper/210:56:052
28564999138,10cyclictest28553-21cyclictest09:22:010
28584999050,33cyclictest0-21swapper/207:11:492
2858499903,28cyclictest22527-21rm09:26:382
2856499903,41cyclictest352-21runrttasks08:21:430
2856499903,33cyclictest30119-21cpuspeed11:26:020
2856499903,33cyclictest30119-21cpuspeed11:26:020
28576998940,39cyclictest0-21swapper/107:35:481
2856499894,35cyclictest27392-21ssh12:15:440
2856499892,38cyclictest9745-21/usr/sbin/munin11:47:310
28584998847,31cyclictest0-21swapper/212:01:122
28576998850,31cyclictest0-21swapper/109:36:121
28576998850,31cyclictest0-21swapper/109:36:121
284622889,56sleep128477-21systemctl06:55:471
28584998766,14cyclictest12553-21ssh09:10:462
28576998744,37cyclictest0-21swapper/109:10:481
28576998743,37cyclictest0-21swapper/108:36:021
28576998741,38cyclictest0-21swapper/108:31:081
2857699872,38cyclictest13371-21/usr/sbin/munin11:51:141
2856499873,27cyclictest11957-21fschecks_time07:41:090
28584998644,35cyclictest0-21swapper/208:41:232
28576998651,28cyclictest0-21swapper/111:16:431
28576998651,28cyclictest0-21swapper/111:16:431
28576998647,32cyclictest0-21swapper/107:16:121
2857699863,38cyclictest13047-21ssh09:10:561
28564998627,19cyclictest9862-21kworker/u17:0+nfsiod10:11:540
28564998624,16cyclictest0-21swapper/012:00:480
28564998624,16cyclictest0-21swapper/012:00:480
277892867,55sleep227857-21cat06:51:322
28584998569,9cyclictest0-21swapper/209:11:272
28584998545,33cyclictest0-21swapper/207:30:452
2858499852,13cyclictest2374-21systemd-journal11:15:432
28576998512,30cyclictest27104-21cpuspeed11:21:021
28564998529,20cyclictest9862-21kworker/u17:0+nfsiod10:18:480
28564998529,20cyclictest9862-21kworker/u17:0+nfsiod10:18:480
2858499843,60cyclictest25502-21apt-get09:31:002
2858499843,37cyclictest22961-21basename10:20:452
2858499843,37cyclictest22961-21basename10:20:452
2858499842,63cyclictest5357-21ssh09:51:122
2858499842,36cyclictest352-21runrttasks08:56:112
28576998458,8cyclictest181rcu_preempt10:45:591
2857699843,33cyclictest22209-21ssh10:18:441
2857699843,33cyclictest22209-21ssh10:18:441
2858499833,36cyclictest14981-21ssh11:01:062
2858499833,27cyclictest24399-21runrttasks10:21:282
28576998356,19cyclictest352-21runrttasks08:05:481
28576998356,19cyclictest352-21runrttasks08:05:481
2857699833,37cyclictest352-21runrttasks12:03:461
2857699832,36cyclictest1-21systemd09:50:461
2857699832,36cyclictest1-21systemd09:50:461
28584998258,13cyclictest0-21swapper/207:36:092
28584998248,29cyclictest0-21swapper/209:05:492
2858499823,12cyclictest0-21swapper/210:53:002
2858499823,12cyclictest0-21swapper/210:53:002
2858499823,11cyclictest0-21swapper/211:31:052
2857699825,68cyclictest25098-21cat09:30:471
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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