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2026-05-21 - 21:32
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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 100 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
20918998449,13cyclictest181rcu_preempt12:07:100
20918998411,61cyclictest14379-21ssh09:31:380
20931998362,9cyclictest0-21swapper/209:06:202
20931998335,11cyclictest181rcu_preempt07:56:052
20918998357,16cyclictest2220-21fschecks_time07:41:050
20918998354,15cyclictest181rcu_preempt08:30:450
20918998348,12cyclictest181rcu_preempt12:16:160
20931998260,12cyclictest0-21swapper/212:11:052
20931998260,12cyclictest0-21swapper/212:11:052
20931998241,8cyclictest181rcu_preempt08:40:592
20931998235,12cyclictest181rcu_preempt10:26:032
20931998235,12cyclictest181rcu_preempt10:26:032
20931998234,14cyclictest181rcu_preempt08:01:072
20931998234,14cyclictest181rcu_preempt08:01:072
20931998232,29cyclictest0-21swapper/211:05:222
20931998232,29cyclictest0-21swapper/211:05:222
20924998224,24cyclictest26189-21seq09:50:501
20924998224,24cyclictest26189-21seq09:50:501
20924998222,25cyclictest14000-21sh12:10:561
20924998222,25cyclictest14000-21sh12:10:561
20924998220,24cyclictest23940-21ssh11:33:111
20924998216,28cyclictest352-21runrttasks12:21:571
20924998216,28cyclictest0-21swapper/110:08:401
20918998250,11cyclictest181rcu_preempt10:16:040
20918998250,11cyclictest181rcu_preempt10:16:040
20918998248,13cyclictest181rcu_preempt08:15:460
20918998248,13cyclictest181rcu_preempt08:15:460
20918998243,12cyclictest181rcu_preempt07:10:590
20918998243,12cyclictest181rcu_preempt07:10:590
20918998237,19cyclictest58-21kcompactd010:14:050
20931998141,8cyclictest181rcu_preempt09:46:192
20924998117,26cyclictest24367-21seq07:09:211
20924998117,26cyclictest24367-21seq07:09:211
20924998116,25cyclictest27830-21diskmemload11:12:571
20924998114,29cyclictest19856-21ls11:26:201
20924998112,29cyclictest0-21swapper/110:52:251
20918998150,10cyclictest181rcu_preempt11:56:010
20918998147,14cyclictest181rcu_preempt11:06:150
20918998140,16cyclictest11060-21switchtime08:06:480
2039228111,41sleep30-21swapper/306:57:083
20936998014,29cyclictest0-21swapper/312:01:333
20931998035,8cyclictest181rcu_preempt08:06:462
20931998031,13cyclictest181rcu_preempt10:21:212
20924998062,11cyclictest22690-21munin-node10:11:071
20924998062,11cyclictest17717-21ssh10:30:461
20924998062,11cyclictest17717-21ssh10:30:461
20924998058,15cyclictest15908-21threads08:21:171
20924998053,21cyclictest544-21cron07:55:431
20924998021,20cyclictest21957-21seq10:36:211
20924998019,25cyclictest17110-21ssh09:36:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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