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2026-08-01 - 10:31
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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 Aug 01, 2026 00:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20363217810,26sleep00-21swapper/018:55:520
1587421220,7sleep3451rcuc/322:22:193
20524991113,83cyclictest3978-21sh23:51:072
1922021119,70sleep119269-21fschecks_time18:51:201
20524991063,67cyclictest15246-21apt-get00:11:052
2197021040,5sleep20-21swapper/221:40:192
205199910475,21cyclictest586-21wc23:45:541
20524991028,76cyclictest6411-21ssh23:01:332
205249910274,19cyclictest5671-21munin-plugin-st23:00:532
20524991003,35cyclictest24171-21latency_hist20:45:542
2052499993,40cyclictest11579-21tune2fs22:16:132
20524999767,20cyclictest25163-21sendmail21:45:512
2052499973,35cyclictest24640-21cut20:46:122
195922979,61sleep219607-21open_inodes18:51:342
20524999568,18cyclictest28499-21apt-key21:50:552
20524999542,45cyclictest0-21swapper/220:16:282
2052499944,35cyclictest21787-21ssh23:26:182
20524999437,14cyclictest9325-21ssh21:19:092
20524999437,14cyclictest9325-21ssh21:19:092
20524999435,51cyclictest0-21swapper/222:11:072
20524999434,8cyclictest0-21swapper/222:30:592
2052499943,37cyclictest15575-21ls23:16:142
2052499942,31cyclictest20947-21grep00:20:522
2052499933,35cyclictest2005-21cut19:36:182
2052499933,35cyclictest18066-21cpuspeed20:26:072
2052499933,31cyclictest10069-21head00:01:282
20524999326,18cyclictest0-21swapper/219:15:542
2052499932,35cyclictest22209-21grep00:21:262
2052499932,35cyclictest16942-21/usr/sbin/munin21:31:162
2052499932,34cyclictest21081-21latency_hist20:35:532
2052499932,34cyclictest21081-21latency_hist20:35:532
20524999241,9cyclictest0-21swapper/222:51:172
2052499922,36cyclictest13735-21uname20:11:242
2052499922,33cyclictest13895-21if_eth021:26:162
2052499914,34cyclictest5038-21awk21:11:252
20524999135,9cyclictest0-21swapper/223:11:222
2052499913,43cyclictest458-21sh21:56:432
2052499913,38cyclictest16540-21fschecks_count20:21:132
2052499913,37cyclictest352-21runrttasks20:06:322
2052499913,34cyclictest3955-21modprobe21:10:512
20524999124,14cyclictest0-21swapper/200:06:192
20524999124,14cyclictest0-21swapper/200:06:192
2052499912,35cyclictest28478-21ssh20:56:262
2052499904,34cyclictest30194-21awk19:21:262
2052499903,34cyclictest6279-21grep22:06:272
2052499903,34cyclictest6279-21grep22:06:272
2052499903,34cyclictest31979-21grep19:26:272
2052499902,29cyclictest26428-21kernelversion20:51:182
20515999068,16cyclictest2538-21fschecks_time22:01:140
2052499897,72cyclictest13914-21apt-get22:21:072
2052499893,39cyclictest22675-21latency_hist20:40:532
2052499893,38cyclictest23506-21timerandwakeup19:01:292
2052499893,35cyclictest17482-21/usr/sbin/munin22:26:002
2052499893,35cyclictest17482-21/usr/sbin/munin22:26:002
2052499893,34cyclictest23459-21acpi22:36:012
2052499892,36cyclictest29228-21ssh22:45:532
2052999883,37cyclictest0-21swapper/323:51:083
2052499889,38cyclictest10492-21apt-get21:21:072
2052499889,38cyclictest10492-21apt-get21:21:072
2052499883,41cyclictest7031-21runrttasks19:51:162
2052499883,40cyclictest591-21latency_hist23:45:542
2052499883,35cyclictest29994-21latency_hist23:40:522
2052499883,34cyclictest352-21runrttasks21:02:132
2052499883,34cyclictest28708-21/usr/sbin/munin21:51:472
2052499873,35cyclictest9992-21mailstats23:06:242
2052499872,36cyclictest6624-21latency_hist19:50:542
20519998752,10cyclictest170-21jbd2/mmcblk2p2-800:21:051
2052499863,33cyclictest3066-21wc22:01:272
2052499862,35cyclictest24697-21ssh23:31:172
2052499862,35cyclictest24697-21ssh23:31:172
2052499854,29cyclictest1342-21ntp_kernel_pll_23:46:202
2052499853,37cyclictest352-21runrttasks19:42:552
2052499853,37cyclictest352-21runrttasks19:42:552
20519998548,10cyclictest5071-21apt-get19:46:061
2052499842,39cyclictest8704-21unin-run00:00:512
20519998442,18cyclictest58-21kcompactd022:55:441
20515998450,27cyclictest31456-21ssh23:41:540
20515998424,36cyclictest0-21swapper/019:41:250
20515998424,36cyclictest0-21swapper/019:41:250
2052499832,35cyclictest352-21runrttasks20:03:472
2052499832,35cyclictest352-21runrttasks20:03:472
20519998366,12cyclictest0-21swapper/120:40:531
20519998344,14cyclictest20501-21cyclictest00:13:541
20515998366,11cyclictest27424-21diskmemload23:08:510
20515998339,35cyclictest0-21swapper/000:21:120
2052499822,35cyclictest29748-21fschecks_count22:46:132
2052499822,35cyclictest29748-21fschecks_count22:46:132
20515998247,7cyclictest181rcu_preempt21:49:480
2052499815,32cyclictest18189-21/usr/sbin/munin23:21:092
20519998151,8cyclictest181rcu_preempt22:03:031
20519998137,9cyclictest181rcu_preempt21:34:161
20519998044,12cyclictest58-21kcompactd022:22:471
20519998040,9cyclictest181rcu_preempt21:12:051
20515998058,15cyclictest31452-21latency19:26:160
152832800,9sleep00-21swapper/020:16:200
20519997957,15cyclictest12907-21processes23:11:231
20519997946,8cyclictest2317-21ssh23:47:491
20519997945,25cyclictest1552-21modprobe19:35:511
20515997959,7cyclictest181rcu_preempt00:10:540
20515997959,7cyclictest181rcu_preempt00:10:540
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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