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2026-05-16 - 23:01
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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 Sat May 16, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
626699992cyclictest10586-21diskstats09:21:410
81790rcu_preempt15722-21ssh11:29:321
81790rcu_preempt0-21swapper/107:09:221
81760rcu_preempt9074-21ntp_states11:16:491
81760rcu_preempt0-21swapper/109:14:531
81750rcu_preempt0-21swapper/110:51:051
81740rcu_preempt3689-21memory12:06:471
81730rcu_preempt7405-21ssh09:16:371
81730rcu_preempt4254-21diskmemload09:32:271
81730rcu_preempt0-21swapper/111:07:201
81720rcu_preempt19085-21apt-get08:01:370
81720rcu_preempt19-21ksoftirqd/111:54:151
81720rcu_preempt0-21swapper/112:35:151
81710rcu_preempt19646-21grep09:36:521
81710rcu_preempt1461-21sh10:03:011
81710rcu_preempt14391-21ntp_states10:26:480
81700rcu_preempt31715-21diskmemload10:00:120
81700rcu_preempt26333-21sh09:50:140
81690rcu_preempt8547-21apt-get12:16:390
81690rcu_preempt7368-21sh10:14:490
81690rcu_preempt20674-21if_can108:06:441
81690rcu_preempt18278-1kworker/0:0H12:38:400
81680rcu_preempt14109-21if_wlan010:26:441
81680rcu_preempt0-21swapper/011:52:260
81680rcu_preempt0-21swapper/010:37:020
81680rcu_preempt0-21swapper/009:42:480
81680rcu_preempt0-21swapper/009:40:580
81670rcu_preempt0-21swapper/009:18:420
146550670irq/30-eth0-tx-4072-21ssh10:07:280
89150660irq/17-ehci_hcd3-21ksoftirqd/011:09:220
81660rcu_preempt17659-21ssh11:32:010
81660rcu_preempt10751-21/usr/sbin/munin09:21:441
81660rcu_preempt0-21swapper/011:39:230
81660rcu_preempt0-21swapper/011:26:490
81650rcu_preempt0-21swapper/012:02:380
81650rcu_preempt0-21swapper/011:41:460
81650rcu_preempt0-21swapper/011:26:230
81650rcu_preempt0-21swapper/010:20:330
81650rcu_preempt0-21swapper/010:04:440
81650rcu_preempt0-21swapper/009:52:370
81650rcu_preempt0-21swapper/009:35:120
81650rcu_preempt0-21swapper/009:16:140
81650rcu_preempt0-21swapper/007:36:520
81640rcu_preempt0-21swapper/012:27:220
81640rcu_preempt0-21swapper/012:09:160
81640rcu_preempt0-21swapper/010:59:450
81640rcu_preempt0-21swapper/010:36:230
81630rcu_preempt0-21swapper/011:02:200
81630rcu_preempt0-21swapper/010:50:320
81630rcu_preempt0-21swapper/009:07:510
81630rcu_preempt0-21swapper/008:22:380
81630rcu_preempt0-21swapper/007:43:160
81630rcu_preempt0-21swapper/007:32:030
81610rcu_preempt0-21swapper/010:21:490
81610rcu_preempt0-21swapper/008:46:500
81590rcu_preempt3-21ksoftirqd/007:06:460
81590rcu_preempt0-21swapper/010:53:520
81590rcu_preempt0-21swapper/010:44:140
89950580irq/17-ehci_hcd5628-21apt-get11:11:350
81570rcu_preempt0-21swapper/012:24:490
81570rcu_preempt0-21swapper/011:16:510
81570rcu_preempt0-21swapper/008:51:510
81570rcu_preempt0-21swapper/008:51:510
146650570irq/31-eth0-tx-0-21swapper/110:45:041
89950560irq/17-ehci_hcd0-21swapper/108:21:131
81560rcu_preempt0-21swapper/008:56:400
81560rcu_preempt0-21swapper/007:56:500
81560rcu_preempt0-21swapper/007:56:260
6267995648cyclictest945-21usb-storage07:44:191
6267995647cyclictest945-21usb-storage08:34:501
89950550irq/17-ehci_hcd945-21usb-storage11:46:450
89950550irq/17-ehci_hcd945-21usb-storage11:24:321
89950550irq/17-ehci_hcd0-21swapper/110:19:051
6267995546cyclictest945-21usb-storage08:28:361
6266995520cyclictest146250irq/28-eth0-rx-12:31:380
146250550irq/28-eth0-rx-41ktimersoftd/009:26:320
6267995451cyclictest945-21usb-storage07:26:281
89950530irq/17-ehci_hcd0-21swapper/110:39:551
81530rcu_preempt0-21swapper/012:15:210
81530rcu_preempt0-21swapper/011:56:560
6267995349cyclictest945-21usb-storage09:04:381
6267995349cyclictest945-21usb-storage07:38:311
6267995349cyclictest945-21usb-storage07:19:591
6267995349cyclictest945-21usb-storage07:19:591
6267995348cyclictest945-21usb-storage08:57:301
89950520irq/17-ehci_hcd945-21usb-storage12:00:321
81520rcu_preempt0-21swapper/009:01:490
6267995249cyclictest945-21usb-storage07:32:041
6267995248cyclictest945-21usb-storage09:07:261
6267995248cyclictest945-21usb-storage08:46:551
6267995248cyclictest945-21usb-storage08:22:351
6267995248cyclictest945-21usb-storage07:23:281
6267995248cyclictest945-21usb-storage07:12:491
6267995247cyclictest945-21usb-storage08:45:151
6267995247cyclictest945-21usb-storage08:13:531
146550520irq/30-eth0-tx-945-21usb-storage10:09:441
89950510irq/17-ehci_hcd945-21usb-storage12:26:151
81510rcu_preempt7516-21latency_hist07:16:250
81510rcu_preempt0-21swapper/107:56:321
81510rcu_preempt0-21swapper/008:26:470
6267995148cyclictest945-21usb-storage08:53:251
6267995148cyclictest945-21usb-storage08:53:251
6267995148cyclictest945-21usb-storage08:36:591
6267995148cyclictest945-21usb-storage08:02:171
6267995148cyclictest945-21usb-storage07:52:231
6267995148cyclictest945-21usb-storage07:46:281
626699511cyclictest21373-21/usr/sbin/munin08:06:520
89950500irq/17-ehci_hcd945-21usb-storage10:54:581
626699502cyclictest27913-21apt-get08:36:380
81490rcu_preempt27046-21ssh11:51:171
626699498cyclictest10810-1kworker/0:0H07:26:410
626699492cyclictest26904-21diskstats08:31:410
626699492cyclictest15307-21apt-esm-hook07:46:400
626699491cyclictest30342-21latency_hist08:46:250
626699491cyclictest22858-21apt-get08:16:390
81480rcu_preempt0-21swapper/008:11:440
626699483cyclictest8943-21apt-esm-hook07:21:380
6267994744cyclictest181ktimersoftd/112:01:501
626699474cyclictest7665-21apt-esm-hook07:16:390
626699474cyclictest7665-21apt-esm-hook07:16:390
89950460irq/17-ehci_hcd945-21usb-storage12:11:521
6267994643cyclictest79950irq/19-0000:00:11:41:421
146250460irq/28-eth0-rx-0-21swapper/111:16:151
89950450irq/17-ehci_hcd0-21swapper/112:39:401
146650450irq/31-eth0-tx-4254-21diskmemload10:59:301
146250450irq/28-eth0-rx-0-21swapper/112:21:211
6267994441cyclictest79950irq/19-0000:00:09:26:511
89950430irq/17-ehci_hcd21976-21strings09:41:471
6267994340cyclictest812-21scsi_eh_009:46:521
146250430irq/28-eth0-rx-0-21swapper/109:57:121
6267994239cyclictest181ktimersoftd/110:11:381
146650420irq/31-eth0-tx-15149-1kworker/1:2H11:01:271
89950410irq/17-ehci_hcd945-21usb-storage11:36:431
146650410irq/31-eth0-tx-0-21swapper/110:32:321
146650400irq/31-eth0-tx-29055-1kworker/1:0H09:55:321
146250390irq/28-eth0-rx-0-21swapper/111:35:131
146250390irq/28-eth0-rx-0-21swapper/110:22:431
146250370irq/28-eth0-rx-0-21swapper/112:28:451
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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