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2026-05-04 - 15:44
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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 May 04, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81940rcu_preempt10282-21df_abs07:05:380
89950830irq/17-ehci_hcd0-21swapper/107:05:391
81750rcu_preempt13901-21ssh11:07:490
81730rcu_preempt9835-21timerwakeupswit11:55:501
81730rcu_preempt0-21swapper/011:00:430
81710rcu_preempt31104-21diskmemload11:37:181
81700rcu_preempt20761-21apt-get11:20:371
81700rcu_preempt0-21swapper/011:50:430
81700rcu_preempt0-21swapper/011:25:400
81700rcu_preempt0-21swapper/009:38:260
81690rcu_preempt16153-21sh11:11:101
81690rcu_preempt0-21swapper/111:04:051
81680rcu_preempt27037-21diskstats10:35:401
81680rcu_preempt0-21swapper/011:37:330
81680rcu_preempt0-21swapper/009:14:200
81670rcu_preempt0-21swapper/109:56:121
81670rcu_preempt0-21swapper/012:07:010
81660rcu_preempt31360-21sh10:42:381
81660rcu_preempt17551-21cpu12:10:381
81660rcu_preempt0-21swapper/112:36:451
81660rcu_preempt0-21swapper/111:17:381
81660rcu_preempt0-21swapper/109:42:551
81660rcu_preempt0-21swapper/012:12:330
81650rcu_preempt4726-21sh10:51:471
81650rcu_preempt22568-21cron07:55:240
81650rcu_preempt20837-21needreboot07:45:451
81650rcu_preempt19555-21sh10:22:070
81650rcu_preempt16240-21netstat09:20:451
81650rcu_preempt0-21swapper/112:27:351
81650rcu_preempt0-21swapper/112:08:421
81650rcu_preempt0-21swapper/111:53:141
81650rcu_preempt0-21swapper/110:13:421
81650rcu_preempt0-21swapper/109:53:441
81640rcu_preempt26820-21if_can008:10:420
81640rcu_preempt15669-21kworker/0:211:13:170
81640rcu_preempt0-21swapper/112:18:221
81640rcu_preempt0-21swapper/111:31:561
81640rcu_preempt0-21swapper/109:11:231
81640rcu_preempt0-21swapper/108:58:261
81640rcu_preempt0-21swapper/010:33:520
89950630irq/17-ehci_hcd945-21usb-storage10:15:411
81630rcu_preempt20587-21ssh12:15:400
81630rcu_preempt0-21swapper/109:35:501
81630rcu_preempt0-21swapper/109:34:101
81630rcu_preempt0-21swapper/108:53:251
81630rcu_preempt0-21swapper/012:01:580
81620rcu_preempt31682-21ssh09:47:260
81620rcu_preempt1681-21/usr/sbin/munin08:40:461
81620rcu_preempt0-21swapper/112:24:081
81620rcu_preempt0-21swapper/110:55:311
81620rcu_preempt0-21swapper/110:00:501
81620rcu_preempt0-21swapper/109:16:181
81620rcu_preempt0-21swapper/012:37:020
81620rcu_preempt0-21swapper/010:00:360
81620rcu_preempt0-21swapper/007:20:240
81610rcu_preempt4158-21sh10:50:480
81610rcu_preempt0-21swapper/112:32:491
81610rcu_preempt0-21swapper/110:45:441
81610rcu_preempt0-21swapper/110:09:391
81610rcu_preempt0-21swapper/110:09:391
81600rcu_preempt2995-21munin-run10:50:240
81600rcu_preempt25312-21ssh10:31:581
81600rcu_preempt0-21swapper/112:00:441
81600rcu_preempt0-21swapper/111:46:311
81600rcu_preempt0-21swapper/010:56:330
81590rcu_preempt25664-21ssh11:28:301
81590rcu_preempt18308-21needreboot07:35:441
81590rcu_preempt0-21swapper/111:43:081
81590rcu_preempt0-21swapper/110:26:371
81590rcu_preempt0-21swapper/108:30:421
81590rcu_preempt0-21swapper/011:42:170
81590rcu_preempt0-21swapper/009:18:410
81590rcu_preempt0-21swapper/009:05:490
81580rcu_preempt30582-21memory09:45:441
81580rcu_preempt28561-21ssh10:37:470
81580rcu_preempt14427-21ssh11:09:351
81580rcu_preempt0-21swapper/109:27:021
81580rcu_preempt0-21swapper/108:21:461
81580rcu_preempt0-21swapper/108:10:251
81580rcu_preempt0-21swapper/011:15:310
81580rcu_preempt0-21swapper/010:30:120
81580rcu_preempt0-21swapper/010:05:270
81580rcu_preempt0-21swapper/010:05:270
81580rcu_preempt0-21swapper/009:53:400
81580rcu_preempt0-21swapper/009:44:570
81570rcu_preempt22309-21ssh11:22:010
81570rcu_preempt14612-21ntp_offset07:20:451
81570rcu_preempt10184-21ssh11:56:440
81570rcu_preempt0-21swapper/107:10:451
81570rcu_preempt0-21swapper/010:15:570
81570rcu_preempt0-21swapper/009:27:030
81570rcu_preempt0-21swapper/007:40:460
81560rcu_preempt9197-21diskmemload09:58:400
81560rcu_preempt4468-21ssh11:47:090
81560rcu_preempt28370-21ssh11:32:550
81560rcu_preempt0-21swapper/110:21:261
81560rcu_preempt0-21swapper/109:00:491
81560rcu_preempt0-21swapper/108:08:471
81560rcu_preempt0-21swapper/107:50:391
81560rcu_preempt0-21swapper/107:25:511
81560rcu_preempt0-21swapper/107:19:361
81560rcu_preempt0-21swapper/012:28:160
81560rcu_preempt0-21swapper/010:10:480
81560rcu_preempt0-21swapper/009:30:540
81550rcu_preempt23799-21ssh12:20:430
81550rcu_preempt0-21swapper/107:30:271
81550rcu_preempt0-21swapper/012:30:560
81550rcu_preempt0-21swapper/009:21:580
81550rcu_preempt0-21swapper/008:50:330
81540rcu_preempt488-21/usr/sbin/munin08:35:371
81540rcu_preempt31466-21ssh10:42:560
81540rcu_preempt23033-21if_can107:55:401
81540rcu_preempt1210-21ps08:35:470
81540rcu_preempt0-21swapper/108:45:521
81540rcu_preempt0-21swapper/108:18:271
81540rcu_preempt0-21swapper/108:02:291
81540rcu_preempt0-21swapper/107:41:461
81540rcu_preempt0-21swapper/008:56:010
81540rcu_preempt0-21swapper/007:30:400
81520rcu_preempt4155-21grep08:50:250
81510rcu_preempt14036-21df07:20:370
81500rcu_preempt2192-21snmpd09:03:270
81500rcu_preempt0-21swapper/007:36:560
11234994947cyclictest945-21usb-storage08:25:361
11234994946cyclictest945-21usb-storage09:05:421
11225994845cyclictest945-21usb-storage08:05:480
81470rcu_preempt16235-21users07:25:490
81460rcu_preempt32633-21users08:30:500
81450rcu_preempt24468-21irqstats08:00:430
81440rcu_preempt30120-21users08:20:510
81430rcu_preempt1941-21df_inode08:40:400
81420rcu_preempt30543-21diskstats08:25:390
81420rcu_preempt21282-21users07:45:510
146550340irq/30-eth0-tx-0-21swapper/007:10:450
146550300irq/30-eth0-tx-21304-21kworker/0:007:55:370
89550290irq/17-ehci_hcd28482-21ntp_states08:15:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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