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2026-05-05 - 07:34
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Tue May 05, 2026 00:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1251721589,121sleep112567-21sort18:57:351
1251721589,121sleep112567-21sort18:57:351
132889911489,19cyclictest13290-21latency_hist19:01:530
132889911489,19cyclictest13290-21latency_hist19:01:530
2414021100,5sleep224133-21ssh21:07:192
2414021100,5sleep224133-21ssh21:07:192
13302999674,15cyclictest13279-21cyclictest20:07:222
1329399944,39cyclictest8827-21latency_hist20:26:531
1330299933,42cyclictest39-21ksoftirqd/222:42:452
13302999246,12cyclictest181rcu_preempt19:52:202
13293999228,57cyclictest1794-21ssh23:12:281
1329399922,80cyclictest12281-21apt-get21:42:081
1329399922,80cyclictest12281-21apt-get21:42:081
13302999137,15cyclictest181rcu_preempt22:59:152
1329399912,45cyclictest10246-21apt-get20:32:031
1329399912,45cyclictest10246-21apt-get20:32:031
1329399912,28cyclictest22837-21ssh22:52:281
1329399912,28cyclictest22837-21ssh22:52:281
13288999172,10cyclictest0-21swapper/000:06:490
13302999066,17cyclictest28952-21sh23:02:522
13302999066,17cyclictest28952-21sh23:02:522
13288999035,9cyclictest181rcu_preempt23:16:430
1328899901,57cyclictest15-21ksoftirqd/000:22:150
13302998956,25cyclictest25713-21kworker/u19:0+nfsiod22:16:522
13302998956,25cyclictest25713-21kworker/u19:0+nfsiod22:16:522
13302998937,17cyclictest181rcu_preempt22:48:112
13302998914,46cyclictest39-21ksoftirqd/221:30:522
13302998914,46cyclictest39-21ksoftirqd/221:30:522
1329399895,39cyclictest20350-21munin-node19:22:001
1329399893,40cyclictest12977-21fschecks_count22:37:101
13288998969,11cyclictest0-21swapper/020:02:250
13288998968,15cyclictest13279-21cyclictest23:11:530
1329399889,14cyclictest0-21swapper/119:07:241
13293998842,39cyclictest19321-21latency_hist23:41:511
13293998839,43cyclictest20236-21diskmemload00:22:521
1329399883,42cyclictest16833-21apt-key00:31:521
1329399883,42cyclictest16833-21apt-key00:31:521
1329399883,36cyclictest352-21runrttasks22:08:451
1329399882,29cyclictest17207-21/usr/sbin/munin20:52:061
119162887,54sleep211969-21cstates18:57:112
119162887,54sleep211969-21cstates18:57:112
13302998767,13cyclictest13279-21cyclictest20:17:102
13293998742,37cyclictest0-21swapper/121:27:171
13293998742,37cyclictest0-21swapper/121:27:171
1329399873,27cyclictest553-21latency_hist20:01:521
13302998645,10cyclictest58-21kcompactd000:07:052
13302998637,12cyclictest181rcu_preempt00:23:442
13302998631,8cyclictest181rcu_preempt20:06:532
13293998663,17cyclictest30417-21threads21:17:251
13293998663,17cyclictest30417-21threads21:17:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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