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2026-07-03 - 00:25
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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 Jul 02, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81760rcu_preempt4530-21ssh11:06:041
81760rcu_preempt3-21ksoftirqd/011:43:450
81750rcu_preempt0-21swapper/111:02:301
81750rcu_preempt0-21swapper/108:25:491
81740rcu_preempt7916-21ssh12:15:211
81740rcu_preempt23627-21sh11:42:311
81740rcu_preempt17960-21ssh10:30:451
81730rcu_preempt8685-21diskmemload09:35:241
81730rcu_preempt3353-21mailstats08:50:461
81730rcu_preempt30898-21latency_hist09:55:231
81730rcu_preempt13993-21tr07:25:431
81730rcu_preempt0-21swapper/111:16:501
81730rcu_preempt0-21swapper/109:24:191
81730rcu_preempt0-21swapper/008:55:430
81720rcu_preempt30945-21latency_hist08:35:221
81720rcu_preempt2192-21snmpd11:25:180
81720rcu_preempt21755-21idleruntime12:40:411
81720rcu_preempt16629-21sh11:30:341
81720rcu_preempt11585-21munin-run10:20:231
81720rcu_preempt0-21swapper/111:55:361
81720rcu_preempt0-21swapper/111:27:381
81720rcu_preempt0-21swapper/110:07:111
81720rcu_preempt0-21swapper/011:45:360
81720rcu_preempt0-21swapper/009:25:400
81710rcu_preempt0-21swapper/009:35:390
81710rcu_preempt0-21swapper/009:20:470
81700rcu_preempt21621-1kworker/0:2H11:59:530
81700rcu_preempt0-21swapper/111:35:351
81700rcu_preempt0-21swapper/108:57:561
81700rcu_preempt0-21swapper/012:20:310
81700rcu_preempt0-21swapper/012:15:230
81690rcu_preempt18007-21ntp_states10:30:460
81690rcu_preempt0-21swapper/112:25:461
81690rcu_preempt0-21swapper/012:28:090
81680rcu_preempt9772-21sh12:17:300
81680rcu_preempt0-21swapper/109:46:001
81670rcu_preempt7409-21cron09:10:221
81670rcu_preempt19-21ksoftirqd/112:37:431
81670rcu_preempt19-21ksoftirqd/110:56:241
81670rcu_preempt0-21swapper/010:06:100
81670rcu_preempt0-21swapper/007:16:580
89550660irq/17-ehci_hcd0-21swapper/009:51:370
81660rcu_preempt8287-21sh10:12:530
81660rcu_preempt30176-21latency_hist10:55:230
81660rcu_preempt15742-21idleruntime-cro07:35:221
81660rcu_preempt0-21swapper/107:10:421
81660rcu_preempt0-21swapper/010:47:310
146250660irq/28-eth0-rx-41ktimersoftd/009:49:220
81650rcu_preempt0-21swapper/112:33:031
81650rcu_preempt0-21swapper/011:09:190
81640rcu_preempt28517-21tr10:50:451
81640rcu_preempt10458-21ssh09:17:051
81640rcu_preempt0-21swapper/011:18:170
81630rcu_preempt0-21swapper/009:00:340
81630rcu_preempt0-21swapper/007:36:520
81630rcu_preempt0-21swapper/007:12:040
81620rcu_preempt16791-21ntp_kernel_pll_12:30:460
81620rcu_preempt0-21swapper/111:51:301
81610rcu_preempt3011-21sh11:05:030
81610rcu_preempt20803-21latency_hist07:55:230
81610rcu_preempt14720-21processes11:25:460
81610rcu_preempt0-21swapper/010:45:230
81590rcu_preempt1765-21ssh12:02:180
81590rcu_preempt0-21swapper/012:41:400
81590rcu_preempt0-21swapper/010:29:200
81590rcu_preempt0-21swapper/010:01:420
81580rcu_preempt0-21swapper/010:35:390
81570rcu_preempt18321-21timerandwakeup09:30:500
81570rcu_preempt13819-21ssh10:23:400
81570rcu_preempt13819-21ssh10:23:400
81570rcu_preempt0-21swapper/012:35:380
81570rcu_preempt0-21swapper/011:31:580
89950560irq/17-ehci_hcd945-21usb-storage08:14:361
81560rcu_preempt21700-21ntpq07:55:440
81560rcu_preempt19-21ksoftirqd/110:47:031
81560rcu_preempt11335-21ssh09:19:450
81560rcu_preempt0-21swapper/011:12:460
81560rcu_preempt0-21swapper/010:55:370
81560rcu_preempt0-21swapper/010:20:130
81560rcu_preempt0-21swapper/008:53:530
81560rcu_preempt0-21swapper/008:37:020
81560rcu_preempt0-21swapper/007:45:410
81560rcu_preempt0-21swapper/007:25:390
81550rcu_preempt19-21ksoftirqd/110:44:461
81550rcu_preempt0-21swapper/012:09:450
81550rcu_preempt0-21swapper/009:58:090
81550rcu_preempt0-21swapper/008:34:280
81550rcu_preempt0-21swapper/008:00:380
146250550irq/28-eth0-rx-41ktimersoftd/009:42:040
81540rcu_preempt0-21swapper/011:50:440
81540rcu_preempt0-21swapper/008:28:300
81540rcu_preempt0-21swapper/007:24:430
10698995451cyclictest945-21usb-storage09:11:571
10698995451cyclictest945-21usb-storage08:36:311
10698995449cyclictest945-21usb-storage08:44:001
10698995446cyclictest945-21usb-storage07:23:491
89950530irq/17-ehci_hcd945-21usb-storage09:25:491
81530rcu_preempt6742-21df_abs10:10:371
81530rcu_preempt0-21swapper/008:06:530
81530rcu_preempt0-21swapper/007:41:340
81530rcu_preempt0-21swapper/007:33:020
10698995349cyclictest945-21usb-storage08:24:341
10698995349cyclictest945-21usb-storage08:02:441
10698995348cyclictest945-21usb-storage09:04:291
10698995348cyclictest945-21usb-storage08:06:001
10698995348cyclictest945-21usb-storage07:57:041
10698995348cyclictest945-21usb-storage07:46:121
10698995345cyclictest945-21usb-storage08:17:021
10698995345cyclictest945-21usb-storage07:50:531
89950520irq/17-ehci_hcd945-21usb-storage11:10:341
81520rcu_preempt19-21ksoftirqd/112:19:371
81520rcu_preempt10729-21latency_hist12:20:241
81520rcu_preempt0-21swapper/009:15:000
81520rcu_preempt0-21swapper/008:47:420
81520rcu_preempt0-21swapper/008:43:260
81520rcu_preempt0-21swapper/008:16:560
81520rcu_preempt0-21swapper/008:15:040
10698995249cyclictest945-21usb-storage08:47:511
10698995248cyclictest945-21usb-storage07:42:451
10698995247cyclictest945-21usb-storage07:37:101
10698995247cyclictest945-21usb-storage07:20:101
10697995248cyclictest945-21usb-storage08:20:450
81510rcu_preempt21436-21ssh10:37:381
89950500irq/17-ehci_hcd945-21usb-storage12:00:431
81500rcu_preempt0-21swapper/111:21:221
146650500irq/31-eth0-tx-0-21swapper/109:34:541
10697995047cyclictest945-21usb-storage11:39:230
81490rcu_preempt19-21ksoftirqd/109:50:451
10698994946cyclictest945-21usb-storage11:46:231
10698994945cyclictest945-21usb-storage10:00:281
81460rcu_preempt6538-21df_inode09:05:380
146650450irq/31-eth0-tx-0-21swapper/112:09:081
89950430irq/17-ehci_hcd0-21swapper/109:40:251
146650430irq/31-eth0-tx-14535-1kworker/1:0H10:20:341
146650430irq/31-eth0-tx-14535-1kworker/1:0H10:20:341
10698994340cyclictest181ktimersoftd/110:28:481
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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