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2025-11-29 - 16:47
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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 Sat Nov 29, 2025 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20374214111,84sleep020418-21switchtime07:04:390
21173991213,91cyclictest23894-21apt-get09:59:082
211619911543,35cyclictest0-21swapper/010:54:090
211619910777,18cyclictest161ktimers/009:59:240
211619910437,28cyclictest6061-21/usr/sbin/munin10:24:230
211619910437,28cyclictest6061-21/usr/sbin/munin10:24:230
211619910341,26cyclictest1-21systemd09:13:550
211619910340,28cyclictest20365-21vmstat10:49:350
211619910340,28cyclictest20365-21vmstat10:49:350
211619910340,25cyclictest13765-21apt-get10:39:060
211619910334,44cyclictest24993-21/usr/sbin/munin07:19:320
211619910334,44cyclictest24993-21/usr/sbin/munin07:19:320
211619910329,29cyclictest22905-21latency_hist07:13:570
211619910238,31cyclictest28889-21ps12:04:290
211619910237,29cyclictest31644-21/usr/sbin/munin12:09:230
211619910237,29cyclictest31644-21/usr/sbin/munin12:09:230
1380821020,5sleep013807-21needreboot12:34:220
211619910139,27cyclictest5867-21ssh09:26:340
211619910138,28cyclictest5416-21/usr/sbin/munin12:19:340
211619910138,28cyclictest5416-21/usr/sbin/munin12:19:340
211619910137,22cyclictest27257-21grep10:04:310
211619910137,22cyclictest27257-21grep10:04:310
211619910132,28cyclictest8906-21/usr/sbin/munin08:09:220
211619910132,28cyclictest8906-21/usr/sbin/munin08:09:220
211619910128,30cyclictest11487-21latency_hist11:33:570
211619910128,30cyclictest11487-21latency_hist11:33:570
211619910041,28cyclictest8304-21apt-get10:29:090
211619910029,37cyclictest24340-21head07:14:330
21161999937,23cyclictest4753-21/usr/sbin/munin07:54:280
21161999933,27cyclictest31724-21ssh11:10:480
2117399977,41cyclictest7719-21ssh09:30:062
21161999737,24cyclictest12746-21ssh12:33:180
21161999737,24cyclictest12746-21ssh12:33:180
21161999737,23cyclictest8932-21ssh09:32:020
21161999734,29cyclictest30742-21rm10:10:180
21161999734,29cyclictest30742-21rm10:10:180
21161999732,27cyclictest207-21systemd-journal11:55:130
21161999732,26cyclictest12891-21ssh11:35:110
21161999725,51cyclictest0-21swapper/008:14:160
21161999636,23cyclictest26140-21ssh11:00:320
21161999636,23cyclictest26140-21ssh11:00:320
21161999635,23cyclictest11053-21taskset10:34:060
21161999635,23cyclictest11053-21taskset10:34:060
21161999631,29cyclictest0-21swapper/008:39:140
2117399953,33cyclictest26544-21latency_hist09:03:562
2116599959,66cyclictest7101-21apt-get09:29:121
21161999540,25cyclictest3686-21wc10:20:120
21161999536,23cyclictest9682-21rm12:27:580
21161999533,29cyclictest21442-21ssh09:54:270
21161999531,26cyclictest16660-21ssh11:43:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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