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2025-12-09 - 08:55
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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 Tue Dec 09, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
151450810irq/28-eth0-rx-0-21swapper/123:34:521
81730rcu_preempt26113-21memory19:35:010
81730rcu_preempt0-21swapper/123:05:061
151850730irq/30-eth0-tx-41ktimersoftd/022:52:150
90050720irq/17-ehci_hcd14860-21ssh00:08:051
81720rcu_preempt0-21swapper/119:05:051
81710rcu_preempt30817-21ssh00:38:260
81710rcu_preempt21718-21/usr/sbin/munin23:19:550
81710rcu_preempt14666-21ssh00:07:300
81700rcu_preempt27290-21ssh00:30:150
81690rcu_preempt7893-21ssh21:51:000
81690rcu_preempt26228-21ssh23:27:300
81690rcu_preempt25301-21ssh21:24:280
81690rcu_preempt25095-21ssh00:26:590
81690rcu_preempt21689-21ssh21:16:340
81690rcu_preempt0-21swapper/022:13:530
81690rcu_preempt0-21swapper/020:40:000
81680rcu_preempt28997-21ssh22:30:510
81680rcu_preempt28318-21strings22:30:041
81680rcu_preempt16168-21ssh22:07:150
81680rcu_preempt0-21swapper/023:39:130
81670rcu_preempt9925-21ssh23:58:320
81670rcu_preempt6576-21ssh23:50:490
81670rcu_preempt30340-21ssh21:33:331
81670rcu_preempt28485-21ssh23:31:000
81670rcu_preempt21767-21apt-get19:19:531
81670rcu_preempt18698-21ssh21:10:580
81670rcu_preempt18698-21ssh21:10:580
81670rcu_preempt0-21swapper/121:50:041
81670rcu_preempt0-21swapper/022:23:400
81670rcu_preempt0-21swapper/021:55:430
81670rcu_preempt0-21swapper/000:15:430
81660rcu_preempt3432-21ssh21:43:490
81660rcu_preempt32580-21ntpq20:00:040
81660rcu_preempt32451-21ssh22:38:410
81660rcu_preempt27015-21ssh21:26:210
81660rcu_preempt26399-21ssh22:26:140
81660rcu_preempt23140-21ntp_states22:20:051
81660rcu_preempt22203-21ssh00:21:120
81660rcu_preempt21619-21munin-run19:19:410
81660rcu_preempt17084-21diskmemload23:47:441
81660rcu_preempt14171-21ssh22:04:250
81660rcu_preempt0-21swapper/023:10:400
81660rcu_preempt0-21swapper/023:06:450
81650rcu_preempt6742-21ssh23:51:251
81650rcu_preempt4470-21ssh22:45:290
81650rcu_preempt30501-21sh00:37:181
81650rcu_preempt2418-21ssh22:42:390
81650rcu_preempt21250-21ssh22:16:140
81650rcu_preempt19672-21ssh23:15:030
81650rcu_preempt17210-21latency_hist21:09:421
81650rcu_preempt17210-21latency_hist21:09:421
81650rcu_preempt16994-21ssh00:11:340
81650rcu_preempt12796-21ssh23:01:520
81650rcu_preempt10545-21ssh22:58:130
81650rcu_preempt0-21swapper/122:44:551
81650rcu_preempt0-21swapper/122:18:351
81650rcu_preempt0-21swapper/023:47:320
81650rcu_preempt0-21swapper/021:37:230
81650rcu_preempt0-21swapper/021:33:220
81650rcu_preempt0-21swapper/020:46:550
81640rcu_preempt9228-21ssh21:54:541
81640rcu_preempt5318-21ssh21:46:190
81640rcu_preempt18068-21python22:10:071
81640rcu_preempt12079-21ssh00:01:400
81640rcu_preempt0-21swapper/123:56:151
81640rcu_preempt0-21swapper/123:33:441
81640rcu_preempt0-21swapper/122:07:021
81640rcu_preempt0-21swapper/019:20:040
81630rcu_preempt6366-21kworker/0:219:05:000
81630rcu_preempt0-21swapper/121:25:121
81630rcu_preempt0-21swapper/020:25:270
81630rcu_preempt0-21swapper/020:21:330
81630rcu_preempt0-21swapper/020:07:190
81630rcu_preempt0-21swapper/019:30:050
81620rcu_preempt0-21swapper/122:43:531
81620rcu_preempt0-21swapper/122:00:231
81620rcu_preempt0-21swapper/100:32:251
81620rcu_preempt0-21swapper/020:38:020
81620rcu_preempt0-21swapper/019:25:120
81620rcu_preempt0-21swapper/019:14:050
81610rcu_preempt0-21swapper/122:27:081
81610rcu_preempt0-21swapper/120:38:381
81610rcu_preempt0-21swapper/120:20:271
81610rcu_preempt0-21swapper/119:31:161
81610rcu_preempt0-21swapper/119:26:281
81610rcu_preempt0-21swapper/020:30:230
81600rcu_preempt754-21awk23:40:060
81600rcu_preempt0-21swapper/122:55:021
81600rcu_preempt0-21swapper/121:35:071
81600rcu_preempt0-21swapper/120:45:021
81600rcu_preempt0-21swapper/120:33:071
81590rcu_preempt3448-21df_abs20:14:561
81590rcu_preempt0-21swapper/123:24:411
81590rcu_preempt0-21swapper/121:00:061
81570rcu_preempt27390-21memory19:40:020
81570rcu_preempt2433-21if_eth120:10:000
81570rcu_preempt23256-21latency_hist00:24:421
81570rcu_preempt0-21swapper/123:25:081
81560rcu_preempt0-21swapper/121:49:391
81550rcu_preempt19789-21cut23:15:041
81550rcu_preempt17548-21ssh00:13:221
81550rcu_preempt0-21swapper/123:00:001
81550rcu_preempt0-21swapper/122:51:171
81540rcu_preempt3995-21ntp_states20:15:040
81540rcu_preempt25646-21tr19:34:551
81540rcu_preempt13569-21df20:55:000
81540rcu_preempt0-21swapper/123:41:461
81540rcu_preempt0-21swapper/119:54:421
81530rcu_preempt18140-21ssh00:14:511
81520rcu_preempt3124-21cron20:14:411
81520rcu_preempt30837-21diskstats19:54:570
81520rcu_preempt0-21swapper/121:42:091
81520rcu_preempt0-21swapper/120:00:061
81510rcu_preempt15287-21sed21:00:040
81510rcu_preempt12889-21ntp_states20:50:030
81510rcu_preempt0-21swapper/122:35:461
81510rcu_preempt0-21swapper/120:28:071
81510rcu_preempt0-21swapper/119:10:061
81500rcu_preempt28803-21ntp_states19:45:030
81500rcu_preempt23247-21if_can021:20:011
81500rcu_preempt20767-21ssh00:19:531
81490rcu_preempt29666-21mii-tool19:49:580
81490rcu_preempt18604-21ssh23:13:321
81490rcu_preempt0-21swapper/100:03:351
81480rcu_preempt13202-21timerwakeupswit20:50:071
81480rcu_preempt0-21swapper/121:17:441
81480rcu_preempt0-21swapper/120:55:121
81480rcu_preempt0-21swapper/119:17:201
81470rcu_preempt0-21swapper/120:40:051
81470rcu_preempt0-21swapper/120:05:461
81450rcu_preempt0-21swapper/121:04:541
81440rcu_preempt0-21swapper/119:59:131
81430rcu_preempt0-21swapper/119:45:041
151450420irq/28-eth0-rx-0-21swapper/021:05:000
81410rcu_preempt27545-21ntp_states19:40:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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