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2026-05-21 - 19:00
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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 Thu May 21, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1944421549,24sleep00-21swapper/006:55:590
2068321116,15sleep20-21swapper/206:59:402
824821060,7sleep00-21swapper/008:00:450
209189910256,16cyclictest24339-21ssh10:41:370
209189910114,60cyclictest345-21lldpd11:11:100
20918999874,9cyclictest181rcu_preempt12:28:540
20918999874,9cyclictest181rcu_preempt12:28:540
2091899942,66cyclictest8069-21runrttasks12:01:090
2093699936,51cyclictest0-21swapper/311:31:373
20931999313,54cyclictest9918-21apt-get11:11:002
2080629215,53sleep1277-21dbus-daemon07:00:451
20931999142,25cyclictest20909-21cyclictest12:01:452
2093199907,60cyclictest9295-21kworker/u19:0+rpciod10:41:512
20931999052,11cyclictest181rcu_preempt12:27:282
20931999052,11cyclictest181rcu_preempt12:27:282
20931999039,8cyclictest181rcu_preempt08:15:442
20931999039,8cyclictest181rcu_preempt08:15:442
20931998941,13cyclictest181rcu_preempt10:00:452
20924998823,24cyclictest26101-21seq10:43:551
20924998819,28cyclictest8152-21ssh12:01:241
20918998868,14cyclictest29958-21kernelversion07:26:060
20918998828,26cyclictest181rcu_preempt11:48:250
20931998757,10cyclictest181rcu_preempt07:26:132
20931998755,10cyclictest181rcu_preempt10:06:082
20931998751,9cyclictest181rcu_preempt12:05:482
20918998764,9cyclictest181rcu_preempt07:51:170
20918998753,12cyclictest181rcu_preempt10:30:580
20918998739,12cyclictest181rcu_preempt09:29:540
20931998635,18cyclictest181rcu_preempt11:30:442
20931998632,12cyclictest181rcu_preempt10:01:092
20931998612,52cyclictest26237-21apt-get09:51:052
20931998612,52cyclictest26237-21apt-get09:51:052
20924998630,21cyclictest27830-21diskmemload11:51:001
20924998626,24cyclictest29838-21seq09:02:581
20918998662,9cyclictest181rcu_preempt09:18:300
20918998662,9cyclictest181rcu_preempt09:18:300
20918998662,8cyclictest181rcu_preempt07:01:040
20918998642,11cyclictest181rcu_preempt09:23:160
20918998640,18cyclictest29068-21sh10:48:490
20931998556,9cyclictest30801-21ssh11:45:372
20918998566,12cyclictest18459-21ssh11:25:230
20918998552,12cyclictest181rcu_preempt10:58:220
20931998451,9cyclictest181rcu_preempt11:37:452
20931998451,9cyclictest181rcu_preempt11:37:452
2093199843,55cyclictest13962-21apt-get09:31:002
20931998432,16cyclictest181rcu_preempt12:16:042
20924998421,30cyclictest8217-21rm11:07:381
20918998463,15cyclictest27808-21latency_hist07:20:450
20918998463,15cyclictest27808-21latency_hist07:20:450
20918998456,11cyclictest181rcu_preempt09:01:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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