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2026-05-01 - 10:09
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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 May 01, 2026 00:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
10205991213,108cyclictest0-21swapper/021:32:160
10205991203,77cyclictest22865-21awk19:37:330
9379211912,69sleep08725-21/usr/sbin/munin18:57:480
102059911729,74cyclictest0-21swapper/020:22:220
102059911729,74cyclictest0-21swapper/020:22:220
10205991133,21cyclictest17223-21latency_hist21:02:080
102059911241,63cyclictest0-21swapper/021:17:200
102059911230,55cyclictest5045-21ssh22:28:030
102059911230,55cyclictest5045-21ssh22:28:030
10205991112,24cyclictest26095-21rm23:58:330
102059911041,60cyclictest7563-21latency_hist23:27:090
10205991103,28cyclictest14892-21ssh23:38:050
10205991093,23cyclictest6107-21grep20:27:200
10205991092,26cyclictest14276-21cp19:12:100
10205991092,26cyclictest14276-21cp19:12:100
102059910838,62cyclictest0-21swapper/021:52:220
102059910838,62cyclictest0-21swapper/021:52:220
10205991083,27cyclictest2964-21ssh00:14:180
10205991083,27cyclictest2964-21ssh00:14:180
10205991082,25cyclictest9269-21rm00:25:120
10205991074,24cyclictest3409-21ssh22:26:520
102059910634,59cyclictest0-21swapper/021:22:280
10205991063,24cyclictest19577-21rm21:05:370
10205991063,24cyclictest19577-21rm21:05:370
10205991052,26cyclictest20691-21ssh22:54:060
10205991052,24cyclictest22244-21rm23:51:520
10205991052,24cyclictest22244-21rm23:51:520
10205991043,23cyclictest22633-21rm23:52:100
10205991043,23cyclictest22633-21rm23:52:100
10205991042,24cyclictest26301-21ssh23:03:030
10205991042,24cyclictest26301-21ssh23:03:030
10205991042,23cyclictest11647-21sh22:39:010
10205991042,23cyclictest11647-21sh22:39:010
10205991033,7cyclictest0-21swapper/000:07:170
10205991033,7cyclictest0-21swapper/000:07:170
10205991032,6cyclictest0-21swapper/000:17:210
10205991032,30cyclictest30277-21apt-get22:17:160
10205991032,25cyclictest9530-21runrttasks23:29:560
10205991032,22cyclictest22329-21ssh21:09:540
10205991023,7cyclictest0-21swapper/020:07:410
10205991023,21cyclictest23047-21ssh22:04:370
10205991022,6cyclictest0-21swapper/022:57:190
10205991022,22cyclictest28720-21sh22:13:390
10205991022,22cyclictest28720-21sh22:13:390
10205991013,24cyclictest13156-21rm23:36:370
10205991012,24cyclictest13744-21ssh21:48:480
10205991012,23cyclictest7949-21ssh21:39:240
10205991012,23cyclictest30680-21rm23:11:540
10205991012,23cyclictest25568-21/usr/sbin/munin19:47:410
10205991012,23cyclictest25568-21/usr/sbin/munin19:47:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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