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2026-03-16 - 07:46
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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 all highest latencies:
System rackcslot3.osadl.org (updated Mon Mar 16, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt0-21swapper/019:11:030
81750rcu_preempt24079-21munin-run23:09:100
81740rcu_preempt28068-21diskmemload00:02:551
81720rcu_preempt4177-21ntp_states00:34:331
81720rcu_preempt15010-21diskmemload22:49:451
81710rcu_preempt9518-21ssh21:39:221
81710rcu_preempt14272-21ssh22:49:270
81710rcu_preempt0-21swapper/119:44:351
81710rcu_preempt0-21swapper/023:39:500
81710rcu_preempt0-21swapper/022:14:350
81710rcu_preempt0-21swapper/021:37:280
81700rcu_preempt30618-21if_eth019:14:281
81700rcu_preempt22907-21fw_conntrack22:04:270
81700rcu_preempt0-21swapper/123:14:371
81700rcu_preempt0-21swapper/122:32:061
81700rcu_preempt0-21swapper/100:14:321
81700rcu_preempt0-21swapper/021:14:230
81690rcu_preempt9322-21tr19:59:231
81690rcu_preempt28068-21diskmemload23:25:531
81690rcu_preempt27390-21sh22:12:331
81690rcu_preempt0-21swapper/121:49:221
81690rcu_preempt0-21swapper/119:09:231
81680rcu_preempt17554-21cpuspeed21:54:241
81680rcu_preempt1244-21sh21:24:071
81680rcu_preempt11611-21/usr/sbin/munin20:09:100
81680rcu_preempt0-21swapper/122:54:301
81670rcu_preempt26690-21ssh22:10:070
81670rcu_preempt0-21swapper/123:23:031
81670rcu_preempt0-21swapper/122:35:271
81670rcu_preempt0-21swapper/023:48:240
81670rcu_preempt0-21swapper/021:39:160
81660rcu_preempt6021-21latency_hist00:39:111
81660rcu_preempt5665-21latency23:34:300
81660rcu_preempt30369-21munin-run22:19:111
81660rcu_preempt14503-21diskstats20:19:260
81660rcu_preempt11753-21irqstats22:44:290
81660rcu_preempt0-21swapper/121:46:441
81660rcu_preempt0-21swapper/100:20:131
81660rcu_preempt0-21swapper/023:53:280
81650rcu_preempt23197-21latency_hist00:09:100
81650rcu_preempt0-21swapper/123:54:241
81650rcu_preempt0-21swapper/123:08:131
81650rcu_preempt0-21swapper/122:26:341
81650rcu_preempt0-21swapper/021:23:380
81650rcu_preempt0-21swapper/000:37:550
81640rcu_preempt7011-21ssh23:37:301
81640rcu_preempt0-21swapper/123:50:181
81640rcu_preempt0-21swapper/121:30:131
81640rcu_preempt0-21swapper/023:32:510
81640rcu_preempt0-21swapper/021:44:300
81630rcu_preempt2079-21ntpd20:59:300
81630rcu_preempt15543-21ssh21:49:350
81630rcu_preempt0-21swapper/120:44:191
81630rcu_preempt0-21swapper/120:44:191
81630rcu_preempt0-21swapper/100:12:471
81630rcu_preempt0-21swapper/023:57:020
81630rcu_preempt0-21swapper/020:54:240
81630rcu_preempt0-21swapper/020:14:320
81620rcu_preempt6884-21ssh00:39:340
81620rcu_preempt24504-21df_abs20:59:221
81620rcu_preempt12414-21ssh22:44:421
81620rcu_preempt0-21swapper/022:29:340
81610rcu_preempt3831-21ssh23:30:251
81610rcu_preempt2897-21/usr/sbin/munin19:34:291
81610rcu_preempt15784-21entropy20:24:261
81610rcu_preempt0-21swapper/123:00:061
81610rcu_preempt0-21swapper/121:59:331
81610rcu_preempt0-21swapper/120:14:351
81610rcu_preempt0-21swapper/021:24:330
81600rcu_preempt28068-21diskmemload22:37:030
81600rcu_preempt28068-21diskmemload22:27:090
81600rcu_preempt28068-21diskmemload21:35:161
81600rcu_preempt28068-21diskmemload00:06:181
81600rcu_preempt27253-21ssh00:16:430
81600rcu_preempt1484-21/usr/sbin/munin21:24:251
81600rcu_preempt0-21swapper/120:34:291
81600rcu_preempt0-21swapper/119:49:291
81600rcu_preempt0-21swapper/100:29:321
81600rcu_preempt0-21swapper/023:27:420
81600rcu_preempt0-21swapper/022:55:510
81600rcu_preempt0-21swapper/019:44:290
81590rcu_preempt9110-21ssh23:40:471
81590rcu_preempt3547-21needreboot19:34:320
81590rcu_preempt3-21ksoftirqd/000:02:560
81590rcu_preempt22193-21ssh22:03:250
81590rcu_preempt0-21swapper/123:45:311
81590rcu_preempt0-21swapper/123:10:331
81590rcu_preempt0-21swapper/122:19:311
81590rcu_preempt0-21swapper/121:14:291
81590rcu_preempt0-21swapper/121:09:381
81590rcu_preempt0-21swapper/023:02:350
81590rcu_preempt0-21swapper/019:29:280
81580rcu_preempt9891-21ssh22:40:160
81580rcu_preempt32462-21ssh00:27:120
81580rcu_preempt3-21ksoftirqd/022:20:100
81580rcu_preempt29086-21ssh23:17:530
81580rcu_preempt22584-21ssh22:04:151
81580rcu_preempt19554-21ssh21:57:590
81580rcu_preempt0-21swapper/120:50:011
81580rcu_preempt0-21swapper/120:29:291
81580rcu_preempt0-21swapper/119:29:171
81580rcu_preempt0-21swapper/021:29:260
81570rcu_preempt30076-21ssh00:23:100
81570rcu_preempt26034-21ssh23:11:340
81570rcu_preempt26010-21if_can121:04:251
81570rcu_preempt0-21swapper/120:42:171
81570rcu_preempt0-21swapper/119:24:341
81570rcu_preempt0-21swapper/100:28:081
81570rcu_preempt0-21swapper/000:09:270
81560rcu_preempt9871-21ssh22:40:131
81560rcu_preempt0-21swapper/021:04:340
81560rcu_preempt0-21swapper/020:29:330
81560rcu_preempt0-21swapper/000:32:360
81550rcu_preempt30945-21ssh23:20:160
81550rcu_preempt0-21swapper/120:54:571
81550rcu_preempt0-21swapper/120:08:431
81550rcu_preempt0-21swapper/119:19:501
81550rcu_preempt0-21swapper/020:53:040
81550rcu_preempt0-21swapper/020:03:200
81540rcu_preempt0-21swapper/019:54:250
81530rcu_preempt0-21swapper/020:34:260
81530rcu_preempt0-21swapper/019:26:210
81520rcu_preempt15781-21diskstats20:24:260
81500rcu_preempt27260-21if_can121:09:270
81500rcu_preempt12312-21memory20:09:300
81490rcu_preempt7415-21ntp_states19:49:320
81490rcu_preempt4877-21ntp_offset19:39:321
81490rcu_preempt21664-21users20:44:350
81490rcu_preempt21664-21users20:44:350
81490rcu_preempt0-21swapper/019:20:320
147750470irq/29-eth0-rx-19495-21df_abs20:39:250
30089994441cyclictest945-21usb-storage20:14:101
81410rcu_preempt4652-21cut19:39:300
147850410irq/30-eth0-tx-6538-21kworker/1:219:54:391
147950380irq/31-eth0-tx-1250-21jbd2/sda3-819:14:260
81370rcu_preempt19-21ksoftirqd/120:19:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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