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2026-01-02 - 13:26
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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 Fri Jan 02, 2026 00:44:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28520216412,107sleep128570-21fschecks_count19:05:271
298139912441,8cyclictest0-21swapper/023:50:480
298139912441,8cyclictest0-21swapper/023:50:480
29828991175,59cyclictest27663-21ssh22:35:142
298139911535,14cyclictest0-21swapper/021:40:370
29813991153,46cyclictest5288-21/usr/sbin/munin21:10:260
298139911346,59cyclictest0-21swapper/023:05:230
298139911346,59cyclictest0-21swapper/023:05:230
298139911243,8cyclictest0-21swapper/022:59:570
298139911236,11cyclictest0-21swapper/019:45:330
298139911141,17cyclictest30911-21fschecks_time23:30:220
298139911137,13cyclictest0-21swapper/023:55:290
298139911137,13cyclictest0-21swapper/023:55:290
29813991112,72cyclictest24572-21cstates22:30:540
29813991104,48cyclictest352-21runrttasks21:56:520
298139911033,9cyclictest0-21swapper/021:45:360
29813991093,90cyclictest27643-21apt-get22:35:130
29813991093,21cyclictest4870-21/usr/sbin/munin00:30:280
29813991084,40cyclictest30674-21latency_hist20:50:020
298139910835,19cyclictest3054-21latency_hist21:05:010
298139910835,19cyclictest3054-21latency_hist21:05:010
29813991073,32cyclictest14602-21fschecks_time22:15:220
29813991073,32cyclictest14602-21fschecks_time22:15:220
29813991073,29cyclictest7695-21ssh00:35:130
29813991073,29cyclictest7695-21ssh00:35:130
28516210711,65sleep028333-21/usr/sbin/munin19:05:260
29813991063,71cyclictest956-21apt-get19:20:130
298139910637,11cyclictest0-21swapper/020:15:220
298139910637,11cyclictest0-21swapper/019:25:350
298139910631,12cyclictest0-21swapper/020:35:240
298139910627,27cyclictest22189-21apt-get20:25:120
29813991054,34cyclictest32025-21/usr/sbin/munin19:15:290
29813991053,24cyclictest352-21runrttasks22:28:590
29813991033,38cyclictest25200-21tail23:20:360
298139910234,9cyclictest0-21swapper/023:15:160
29813991023,39cyclictest3790-21wc21:05:320
29813991022,40cyclictest12141-21sort21:20:330
29813991022,38cyclictest18537-21ssh21:30:330
298139910215,33cyclictest30670-21sshd00:20:240
133321020,5sleep21336-21fschecks_time00:25:212
29813991013,33cyclictest21675-21timerwakeupswit20:20:340
2981399993,37cyclictest13689-21grep19:55:360
2981399993,37cyclictest13689-21grep19:55:360
29813999912,28cyclictest1955-21timerandwakeup00:25:350
2981399984,35cyclictest17582-21/usr/sbin/munin20:10:330
2981399984,33cyclictest23504-21latency_hist00:10:010
29828999749,14cyclictest181rcu_preempt19:25:112
2981399963,36cyclictest11608-21fschecks_time23:00:210
2981399963,31cyclictest1336-21latency_hist21:00:010
2982899953,47cyclictest7679-21apt-get00:35:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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