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2026-06-18 - 08:32
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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 Thu Jun 18, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811000rcu_preempt19-21ksoftirqd/121:22:331
181760ktimersoftd/128980-21cron19:14:101
81750rcu_preempt24336-21munin-run23:09:101
81720rcu_preempt25795-21kworker/0:219:12:250
81720rcu_preempt0-21swapper/022:04:230
81710rcu_preempt0-21swapper/020:19:260
81710rcu_preempt0-21swapper/020:19:260
81700rcu_preempt0-21swapper/122:54:211
81700rcu_preempt0-21swapper/021:54:230
81700rcu_preempt0-21swapper/000:41:480
89950690irq/17-ehci_hcd945-21usb-storage22:39:501
81690rcu_preempt16293-21latency_hist22:54:101
81690rcu_preempt0-21swapper/100:39:271
81690rcu_preempt0-21swapper/023:07:230
81690rcu_preempt0-21swapper/022:12:030
81680rcu_preempt0-21swapper/122:23:241
81680rcu_preempt0-21swapper/121:55:521
81670rcu_preempt0-21swapper/122:38:371
81670rcu_preempt0-21swapper/121:40:111
81670rcu_preempt0-21swapper/120:23:311
81670rcu_preempt0-21swapper/120:23:311
81660rcu_preempt30061-21k10sensors19:14:341
81660rcu_preempt0-21swapper/023:11:030
81660rcu_preempt0-21swapper/022:37:330
81660rcu_preempt0-21swapper/021:50:400
81660rcu_preempt0-21swapper/000:33:130
81650rcu_preempt29863-21ssh21:19:090
81650rcu_preempt26369-21apt-get00:14:210
81650rcu_preempt0-21swapper/123:54:071
81650rcu_preempt0-21swapper/021:39:290
81640rcu_preempt20470-21switchtime20:44:361
81640rcu_preempt1993-21sshd21:25:261
81640rcu_preempt0-21swapper/122:59:271
81640rcu_preempt0-21swapper/122:46:381
81640rcu_preempt0-21swapper/020:54:100
81630rcu_preempt3801-21rt-features23:29:341
81630rcu_preempt31730-21diskstats00:24:261
81630rcu_preempt18242-21/usr/sbin/munin20:39:291
81630rcu_preempt0-21swapper/000:36:360
81620rcu_preempt5831-21fw_forwarded_lo23:34:261
81620rcu_preempt28752-21ssh00:19:220
81620rcu_preempt18315-21ssh23:58:120
81620rcu_preempt17000-21ps23:54:351
81620rcu_preempt15605-21ssh21:50:471
81620rcu_preempt13488-21ssh21:47:521
81620rcu_preempt0-21swapper/122:14:241
81620rcu_preempt0-21swapper/120:29:241
81620rcu_preempt0-21swapper/120:09:281
81620rcu_preempt0-21swapper/100:09:331
81620rcu_preempt0-21swapper/023:34:570
81620rcu_preempt0-21swapper/023:19:550
81620rcu_preempt0-21swapper/022:49:240
81620rcu_preempt0-21swapper/022:03:090
81610rcu_preempt2893-21ssh00:29:431
81610rcu_preempt10250-21ssh22:41:150
81610rcu_preempt0-21swapper/123:45:381
81610rcu_preempt0-21swapper/122:06:031
81610rcu_preempt0-21swapper/121:32:251
81610rcu_preempt0-21swapper/121:04:331
81610rcu_preempt0-21swapper/120:59:311
81610rcu_preempt0-21swapper/120:26:491
81610rcu_preempt0-21swapper/100:34:311
81610rcu_preempt0-21swapper/020:39:240
81600rcu_preempt29521-21ssh23:18:341
81600rcu_preempt2934-21ssh23:29:230
81600rcu_preempt0-21swapper/123:43:361
81600rcu_preempt0-21swapper/122:03:271
81600rcu_preempt0-21swapper/022:33:250
81590rcu_preempt7495-21ssh21:35:541
81590rcu_preempt32100-21missed_timers00:24:310
81590rcu_preempt20010-21ssh23:59:461
81590rcu_preempt0-21swapper/122:24:301
81590rcu_preempt0-21swapper/100:07:431
81590rcu_preempt0-21swapper/022:59:370
81590rcu_preempt0-21swapper/022:24:260
81590rcu_preempt0-21swapper/021:34:370
81580rcu_preempt31183-21ssh23:20:081
81580rcu_preempt27000-21diskmemload21:22:180
81580rcu_preempt21097-21ssh00:03:220
81580rcu_preempt20695-21latency_hist20:49:100
81580rcu_preempt13045-21ssh22:46:400
81580rcu_preempt10455-21ssh23:43:270
81580rcu_preempt0-21swapper/123:12:141
81580rcu_preempt0-21swapper/023:52:510
81580rcu_preempt0-21swapper/023:15:360
81580rcu_preempt0-21swapper/021:26:130
81580rcu_preempt0-21swapper/000:04:390
81570rcu_preempt3269-21ssh22:29:171
81570rcu_preempt321-21df_inode23:24:251
81570rcu_preempt29117-21ssh21:16:521
81570rcu_preempt26884-21ssh22:12:061
81570rcu_preempt2192-21snmpd20:01:451
81570rcu_preempt18374-21ssh22:56:590
81570rcu_preempt12448-21ssh23:46:000
81570rcu_preempt0-21swapper/120:04:481
81570rcu_preempt0-21swapper/119:44:311
81570rcu_preempt0-21swapper/119:30:271
81570rcu_preempt0-21swapper/100:23:581
81570rcu_preempt0-21swapper/100:15:201
81570rcu_preempt0-21swapper/023:27:140
81570rcu_preempt0-21swapper/021:49:030
81570rcu_preempt0-21swapper/021:04:340
81570rcu_preempt0-21swapper/019:29:100
81560rcu_preempt0-21swapper/022:15:260
81560rcu_preempt0-21swapper/021:30:180
81560rcu_preempt0-21swapper/019:34:340
81560rcu_preempt0-21swapper/019:23:570
81560rcu_preempt0-21swapper/000:12:240
81550rcu_preempt8912-21proc_pri19:59:340
81550rcu_preempt7141-21diskstats19:54:261
81550rcu_preempt0-21swapper/119:25:061
81550rcu_preempt0-21swapper/022:19:530
81550rcu_preempt0-21swapper/019:54:340
81540rcu_preempt0-21swapper/120:49:271
81540rcu_preempt0-21swapper/020:54:560
81540rcu_preempt0-21swapper/019:44:580
81530rcu_preempt547-21egrep19:29:220
81530rcu_preempt0-21swapper/119:19:261
81520rcu_preempt5875-21df_inode19:49:230
81520rcu_preempt12422-21irqstats20:14:291
81520rcu_preempt0-21swapper/120:56:231
81520rcu_preempt0-21swapper/021:13:260
81520rcu_preempt0-21swapper/019:39:200
81520rcu_preempt0-21swapper/019:14:420
29026995249cyclictest945-21usb-storage21:09:321
81510rcu_preempt1829-21apt-get19:34:201
81510rcu_preempt0-21swapper/020:32:170
81500rcu_preempt12665-21ntp_states20:14:320
81500rcu_preempt11130-21if_wlan020:09:270
29026995045cyclictest945-21usb-storage20:34:191
81480rcu_preempt6681-21timerwakeupswit19:49:351
29026994845cyclictest945-21usb-storage19:41:411
146250430irq/28-eth0-rx-24324-21/usr/sbin/munin20:59:350
81390rcu_preempt16989-21apt-get20:34:180
81390rcu_preempt15202-21ntp_states20:24:330
29022993532cyclictest945-21usb-storage20:04:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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