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2026-05-13 - 07:05
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 highest latencies:
System rackcslot3.osadl.org (updated Wed May 13, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt19-21ksoftirqd/123:03:551
81770rcu_preempt19-21ksoftirqd/122:21:041
81760rcu_preempt19-21ksoftirqd/121:36:221
81760rcu_preempt0-21swapper/119:07:081
81750rcu_preempt5150-21cut19:56:281
81750rcu_preempt19-21ksoftirqd/121:52:501
81740rcu_preempt19-21ksoftirqd/122:39:361
81730rcu_preempt0-21swapper/023:08:440
81720rcu_preempt32582-21irqstats21:26:280
81700rcu_preempt19-21ksoftirqd/121:16:571
81700rcu_preempt10819-21sh23:42:540
81700rcu_preempt0-21swapper/023:39:330
81700rcu_preempt0-21swapper/023:16:460
81700rcu_preempt0-21swapper/022:03:160
81700rcu_preempt0-21swapper/022:03:160
81700rcu_preempt0-21swapper/021:36:270
81700rcu_preempt0-21swapper/000:02:580
81690rcu_preempt14425-21fw_conntrack22:51:240
81690rcu_preempt13399-21ssh21:50:550
81680rcu_preempt27764-21sh21:16:480
81680rcu_preempt1607-21ssh22:26:490
81680rcu_preempt13960-21fw_conntrack21:51:240
81680rcu_preempt0-21swapper/021:25:300
89950670irq/17-ehci_hcd111rcuc/022:17:240
81670rcu_preempt2190-21df_abs19:46:210
81670rcu_preempt0-21swapper/023:34:050
81670rcu_preempt0-21swapper/022:06:480
81670rcu_preempt0-21swapper/021:08:460
146250670irq/28-eth0-rx-181ktimersoftd/121:13:121
81660rcu_preempt5931-21ssh00:36:200
81660rcu_preempt0-21swapper/022:01:050
81660rcu_preempt0-21swapper/022:01:050
81650rcu_preempt30599-21/usr/sbin/munin23:21:221
81640rcu_preempt0-21swapper/023:26:300
81640rcu_preempt0-21swapper/021:41:210
81630rcu_preempt24271-21cpuspeed19:06:210
81630rcu_preempt15212-21irqstats23:51:280
81630rcu_preempt0-21swapper/023:22:270
81630rcu_preempt0-21swapper/000:21:270
81620rcu_preempt24553-21ssh22:11:190
81620rcu_preempt10363-21ssh22:43:200
81620rcu_preempt0-21swapper/122:23:571
81620rcu_preempt0-21swapper/022:56:350
81620rcu_preempt0-21swapper/000:27:050
81610rcu_preempt0-21swapper/122:52:071
81610rcu_preempt0-21swapper/023:01:250
81610rcu_preempt0-21swapper/022:46:110
81610rcu_preempt0-21swapper/019:56:330
81610rcu_preempt0-21swapper/019:21:210
81600rcu_preempt17243-21ssh23:56:061
81600rcu_preempt0-21swapper/123:07:061
81600rcu_preempt0-21swapper/122:28:531
81600rcu_preempt0-21swapper/100:40:311
81600rcu_preempt0-21swapper/023:12:470
81600rcu_preempt0-21swapper/023:12:470
81600rcu_preempt0-21swapper/021:11:360
81600rcu_preempt0-21swapper/020:56:310
81600rcu_preempt0-21swapper/020:41:300
25370996050cyclictest945-21usb-storage23:13:111
25370996050cyclictest945-21usb-storage23:13:111
81590rcu_preempt4767-21ssh22:33:241
81590rcu_preempt26311-21ssh22:13:471
81590rcu_preempt21802-21ssh22:06:101
81590rcu_preempt18620-21ssh22:58:341
81590rcu_preempt12551-21ssh21:48:181
81590rcu_preempt0-21swapper/123:38:431
81590rcu_preempt0-21swapper/120:06:201
81590rcu_preempt0-21swapper/100:31:471
89950580irq/17-ehci_hcd0-21swapper/121:21:091
81580rcu_preempt5157-21ssh23:32:411
81580rcu_preempt4194-21ssh21:33:110
81580rcu_preempt29680-21ssh00:20:231
81580rcu_preempt2139-21ssh00:28:161
81580rcu_preempt18798-21ssh23:57:121
81580rcu_preempt1776-21ssh21:29:381
81580rcu_preempt17531-21ssh21:56:411
81580rcu_preempt17531-21ssh21:56:411
81580rcu_preempt12595-21ssh22:46:531
81580rcu_preempt0-21swapper/123:49:191
81580rcu_preempt0-21swapper/123:20:061
81580rcu_preempt0-21swapper/122:01:231
81580rcu_preempt0-21swapper/122:01:231
81580rcu_preempt0-21swapper/121:41:261
81580rcu_preempt0-21swapper/121:32:091
81580rcu_preempt0-21swapper/121:06:211
81580rcu_preempt0-21swapper/120:42:531
81580rcu_preempt0-21swapper/120:01:251
81580rcu_preempt0-21swapper/100:24:151
81580rcu_preempt0-21swapper/023:56:250
81580rcu_preempt0-21swapper/022:39:070
81580rcu_preempt0-21swapper/000:19:380
81580rcu_preempt0-21swapper/000:14:250
81570rcu_preempt20212-21ssh00:01:171
81570rcu_preempt17300-21cpuspeed_turbos20:46:210
81570rcu_preempt17300-21cpuspeed_turbos20:46:210
81570rcu_preempt14221-21ssh23:50:190
81570rcu_preempt11608-21ssh23:45:391
81570rcu_preempt0-21swapper/123:26:101
81570rcu_preempt0-21swapper/122:41:321
81570rcu_preempt0-21swapper/120:58:261
81570rcu_preempt0-21swapper/119:29:421
81570rcu_preempt0-21swapper/119:15:291
81570rcu_preempt0-21swapper/100:07:001
25370995747cyclictest945-21usb-storage19:38:281
81560rcu_preempt4795-21ssh00:32:550
81560rcu_preempt0-21swapper/100:13:391
81560rcu_preempt0-21swapper/022:31:280
81560rcu_preempt0-21swapper/000:06:370
81550rcu_preempt0-21swapper/120:55:201
81550rcu_preempt0-21swapper/119:33:261
81550rcu_preempt0-21swapper/119:16:541
81550rcu_preempt0-21swapper/020:03:140
25370995549cyclictest945-21usb-storage20:38:571
81540rcu_preempt0-21swapper/120:26:321
81540rcu_preempt0-21swapper/120:17:451
81540rcu_preempt0-21swapper/119:54:221
81540rcu_preempt0-21swapper/020:51:310
81540rcu_preempt0-21swapper/020:34:330
81540rcu_preempt0-21swapper/020:06:240
81530rcu_preempt30010-21ssh22:21:090
81530rcu_preempt13633-21diskstats20:31:211
81530rcu_preempt0-21swapper/021:03:370
81530rcu_preempt0-21swapper/019:55:450
81530rcu_preempt0-21swapper/019:36:350
81520rcu_preempt0-21swapper/020:22:060
81520rcu_preempt0-21swapper/019:35:150
25370995249cyclictest945-21usb-storage19:47:431
25370995248cyclictest945-21usb-storage19:22:271
81510rcu_preempt945-21usb-storage19:41:221
81510rcu_preempt11134-21fw_conntrack20:21:231
81510rcu_preempt0-21swapper/020:11:220
81510rcu_preempt0-21swapper/019:43:500
25370995148cyclictest945-21usb-storage21:01:351
25370995148cyclictest945-21usb-storage20:50:421
25370995148cyclictest945-21usb-storage20:50:421
25370995148cyclictest945-21usb-storage20:11:121
81490rcu_preempt29547-21diskstats19:26:240
89550480irq/17-ehci_hcd0-21swapper/020:27:390
81480rcu_preempt0-21swapper/019:13:500
81470rcu_preempt0-21swapper/020:37:440
146550390irq/30-eth0-tx-0-21swapper/019:16:260
146550370irq/30-eth0-tx-20265-21kworker/0:220:16:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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