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2026-06-09 - 03:34
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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 Tue Jun 09, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3947999021cyclictest15678-21diskstats19:58:401
81800rcu_preempt19-21ksoftirqd/121:49:291
81770rcu_preempt0-21swapper/119:08:431
81760rcu_preempt0-21swapper/123:38:461
81730rcu_preempt28435-21ssh23:59:310
81730rcu_preempt16579-21/usr/sbin/munin00:38:461
81720rcu_preempt19336-21fw_conntrack23:43:400
81720rcu_preempt0-21swapper/022:57:170
81720rcu_preempt0-21swapper/022:38:490
81720rcu_preempt0-21swapper/022:19:230
81710rcu_preempt28770-21ssh22:01:100
81710rcu_preempt23676-21diskmemload22:51:561
81710rcu_preempt22957-21ssh22:49:380
81710rcu_preempt18238-21ssh21:42:230
81710rcu_preempt11315-21ntp_states21:28:460
81700rcu_preempt4580-21ssh00:17:201
81700rcu_preempt3649-21ssh21:14:550
81700rcu_preempt31621-21ssh00:06:230
81700rcu_preempt26755-21ssh21:58:160
81700rcu_preempt26755-21ssh21:58:160
81700rcu_preempt23136-21ssh21:50:120
81700rcu_preempt2192-21snmpd20:15:110
81700rcu_preempt19043-21apt-get23:43:371
81700rcu_preempt14614-21ssh00:34:280
81700rcu_preempt14614-21ssh00:34:280
81700rcu_preempt10538-21apt-get21:28:341
81700rcu_preempt10253-21ssh23:27:190
81700rcu_preempt0-21swapper/121:38:471
81700rcu_preempt0-21swapper/000:25:220
81690rcu_preempt7031-21ssh00:21:251
81690rcu_preempt6711-21sh00:20:200
81690rcu_preempt31779-21ssh23:07:110
81690rcu_preempt26988-21apt-get22:58:380
81690rcu_preempt26152-21ssh23:55:500
81690rcu_preempt20703-21ssh22:45:590
81690rcu_preempt1916-21diskmemload22:21:331
81690rcu_preempt18165-21ssh23:41:190
81690rcu_preempt15068-21ssh23:35:200
81690rcu_preempt13276-21ssh23:33:240
81690rcu_preempt0-21swapper/022:09:130
81690rcu_preempt0-21swapper/021:22:410
81690rcu_preempt0-21swapper/000:31:280
81680rcu_preempt9705-21ssh21:25:580
81680rcu_preempt7705-21sshd19:25:320
81680rcu_preempt5305-21ssh23:18:300
81680rcu_preempt32378-21ssh00:08:371
81680rcu_preempt29270-21ssh23:02:511
81680rcu_preempt24367-21ssh22:53:361
81680rcu_preempt2192-21snmpd19:35:020
81680rcu_preempt17398-21ssh00:39:470
81680rcu_preempt13036-21ssh22:32:340
81680rcu_preempt12865-21ssh00:32:381
81680rcu_preempt10207-21ssh22:26:530
81680rcu_preempt0-21swapper/023:17:300
81680rcu_preempt0-21swapper/022:34:540
81680rcu_preempt0-21swapper/022:17:370
81680rcu_preempt0-21swapper/000:14:040
81670rcu_preempt30987-21ssh22:04:170
81670rcu_preempt25904-21ssh23:55:031
81670rcu_preempt23267-21ssh23:50:280
81670rcu_preempt16948-21df_inode20:03:381
81670rcu_preempt14638-21ssh21:34:240
81670rcu_preempt0-21swapper/123:50:251
81670rcu_preempt0-21swapper/122:47:021
81670rcu_preempt0-21swapper/020:59:350
81660rcu_preempt1144-21ssh00:08:560
81660rcu_preempt0-21swapper/123:32:211
81660rcu_preempt0-21swapper/123:12:401
81660rcu_preempt0-21swapper/122:16:061
81660rcu_preempt0-21swapper/121:36:141
81660rcu_preempt0-21swapper/121:18:211
81660rcu_preempt0-21swapper/023:08:310
81660rcu_preempt0-21swapper/021:46:200
81660rcu_preempt0-21swapper/020:27:460
81660rcu_preempt0-21swapper/019:31:240
81650rcu_preempt18086-1kworker/1:1H00:36:041
81650rcu_preempt18086-1kworker/1:1H00:36:041
81650rcu_preempt0-21swapper/123:34:581
81650rcu_preempt0-21swapper/123:22:561
81650rcu_preempt0-21swapper/123:17:251
81650rcu_preempt0-21swapper/122:36:531
81650rcu_preempt0-21swapper/121:53:501
81650rcu_preempt0-21swapper/121:53:501
81650rcu_preempt0-21swapper/121:48:001
81650rcu_preempt0-21swapper/021:09:040
81650rcu_preempt0-21swapper/020:44:360
81650rcu_preempt0-21swapper/020:29:040
81650rcu_preempt0-21swapper/019:49:000
81650rcu_preempt0-21swapper/019:40:050
81640rcu_preempt30129-21ssh22:03:421
81640rcu_preempt15671-21df_inode19:58:400
81640rcu_preempt0-21swapper/121:08:491
81640rcu_preempt0-21swapper/120:40:171
81640rcu_preempt0-21swapper/120:18:451
81640rcu_preempt0-21swapper/100:02:131
81640rcu_preempt0-21swapper/020:55:300
81640rcu_preempt0-21swapper/019:44:440
81630rcu_preempt21106-21memory20:18:450
81630rcu_preempt0-21swapper/120:55:571
81630rcu_preempt0-21swapper/120:44:041
81630rcu_preempt0-21swapper/119:29:521
81630rcu_preempt0-21swapper/119:17:531
81630rcu_preempt0-21swapper/019:57:330
81620rcu_preempt32660-21ssh22:08:371
81620rcu_preempt32636-21ntp_states21:03:470
81620rcu_preempt0-21swapper/122:29:351
81620rcu_preempt0-21swapper/122:23:511
81620rcu_preempt0-21swapper/100:25:001
81610rcu_preempt28847-21ntpq20:48:480
81610rcu_preempt2192-21snmpd20:05:080
81610rcu_preempt0-21swapper/123:23:441
81600rcu_preempt0-21swapper/119:48:391
81590rcu_preempt25196-21mailstats20:33:481
81570rcu_preempt32495-21kworker/0:119:08:430
81560rcu_preempt8166-21ssh21:23:381
81560rcu_preempt6460-21munin-run19:23:241
81560rcu_preempt6460-21munin-run19:23:241
81560rcu_preempt19-21ksoftirqd/122:39:031
81540rcu_preempt14819-21grep19:53:441
81530rcu_preempt31905-21/usr/sbin/munin21:03:451
81530rcu_preempt0-21swapper/100:08:101
81520rcu_preempt0-21swapper/123:07:551
81520rcu_preempt0-21swapper/121:58:341
81510rcu_preempt17934-21latency_hist20:08:241
81500rcu_preempt26511-21python20:38:500
81490rcu_preempt0-21swapper/120:48:401
81470rcu_preempt9167-21cpu19:33:371
81470rcu_preempt0-21swapper/121:21:431
81460rcu_preempt0-21swapper/120:29:391
81460rcu_preempt0-21swapper/119:23:481
81450rcu_preempt0-21swapper/120:58:491
81440rcu_preempt0-21swapper/120:23:401
81430rcu_preempt19938-21netstat20:13:471
89950410irq/17-ehci_hcd0-21swapper/020:09:380
89950380irq/17-ehci_hcd0-21swapper/019:14:100
81380rcu_preempt3-21ksoftirqd/019:18:470
81380rcu_preempt3-21ksoftirqd/019:18:470
81380rcu_preempt11907-21diskstats19:43:401
3947993821cyclictest10384-21apt-esm-hook19:38:371
3936993712cyclictest16979-21kworker/0:120:33:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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