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2026-05-21 - 00:38
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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 Wed May 20, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81760rcu_preempt20379-21sshd07:06:551
81740rcu_preempt15594-21sh11:58:280
81730rcu_preempt13780-21ssh11:56:350
81710rcu_preempt5864-21diskmemload09:43:580
81710rcu_preempt0-21swapper/012:12:100
81700rcu_preempt0-21swapper/011:35:370
81700rcu_preempt0-21swapper/009:35:160
81690rcu_preempt0-21swapper/011:17:420
81690rcu_preempt0-21swapper/011:17:420
81680rcu_preempt0-21swapper/009:11:380
81670rcu_preempt7226-21ssh10:46:570
81670rcu_preempt21512-21turbostat07:11:450
81670rcu_preempt2061-21cpuspeed_turbos10:36:580
81670rcu_preempt0-21swapper/112:26:411
81670rcu_preempt0-21swapper/110:39:271
81670rcu_preempt0-21swapper/010:41:560
81660rcu_preempt0-21swapper/108:26:391
81660rcu_preempt0-21swapper/009:22:380
81660rcu_preempt0-21swapper/008:21:580
81650rcu_preempt8256-21apt-esm-hook08:27:001
81650rcu_preempt32084-21ssh12:27:261
81650rcu_preempt0-21swapper/112:35:061
81650rcu_preempt0-21swapper/109:36:361
81650rcu_preempt0-21swapper/011:47:240
81650rcu_preempt0-21swapper/009:20:250
89950640irq/17-ehci_hcd111rcuc/010:23:500
81640rcu_preempt31006-21ssh12:27:010
81640rcu_preempt0-21swapper/009:13:090
81630rcu_preempt9501-21ssh11:47:171
81630rcu_preempt6501-21mailstats11:42:111
81630rcu_preempt27422-21ssh09:24:351
81630rcu_preempt2192-21snmpd08:16:091
81630rcu_preempt14558-21ssh10:59:441
81630rcu_preempt0-21swapper/111:04:101
81630rcu_preempt0-21swapper/107:28:231
81630rcu_preempt0-21swapper/007:28:410
81620rcu_preempt30865-21ssh10:30:011
81620rcu_preempt19-21ksoftirqd/109:48:581
81620rcu_preempt0-21swapper/111:58:351
81620rcu_preempt0-21swapper/111:20:131
81620rcu_preempt0-21swapper/111:20:131
81620rcu_preempt0-21swapper/110:44:041
81620rcu_preempt0-21swapper/109:20:051
81620rcu_preempt0-21swapper/107:17:131
81620rcu_preempt0-21swapper/011:36:590
81610rcu_preempt5963-21ssh12:40:351
81610rcu_preempt5537-21ssh11:41:550
81610rcu_preempt451-21ssh10:32:511
81610rcu_preempt17325-21ssh12:02:061
81610rcu_preempt0-21swapper/112:07:071
81610rcu_preempt0-21swapper/111:52:541
81610rcu_preempt0-21swapper/111:08:071
81610rcu_preempt0-21swapper/109:41:161
81610rcu_preempt0-21swapper/010:57:020
81610rcu_preempt0-21swapper/010:34:490
81610rcu_preempt0-21swapper/010:07:110
81600rcu_preempt28222-21ssh10:25:021
81600rcu_preempt26837-21df11:22:001
81600rcu_preempt19462-21munin-run12:06:460
81600rcu_preempt0-21swapper/111:41:221
81600rcu_preempt0-21swapper/111:34:251
81600rcu_preempt0-21swapper/110:13:141
81600rcu_preempt0-21swapper/109:59:391
81600rcu_preempt0-21swapper/109:54:251
81600rcu_preempt0-21swapper/012:07:030
81600rcu_preempt0-21swapper/009:51:560
81600rcu_preempt0-21swapper/007:36:460
146650600irq/31-eth0-tx-945-21usb-storage10:06:271
89950590irq/17-ehci_hcd945-21usb-storage09:29:270
81590rcu_preempt6297-21ssh12:41:410
81590rcu_preempt31371-21ssh10:31:450
81590rcu_preempt25674-21ssh10:20:350
81590rcu_preempt22924-21sshd07:16:550
81590rcu_preempt0-21swapper/112:13:481
81590rcu_preempt0-21swapper/110:53:121
81590rcu_preempt0-21swapper/109:42:101
81590rcu_preempt0-21swapper/109:27:441
81590rcu_preempt0-21swapper/108:47:091
81590rcu_preempt0-21swapper/108:42:071
81590rcu_preempt0-21swapper/108:37:011
81590rcu_preempt0-21swapper/108:37:011
81590rcu_preempt0-21swapper/108:17:061
81590rcu_preempt0-21swapper/107:47:101
81580rcu_preempt21888-21processes11:12:110
81580rcu_preempt14867-21ssh10:01:240
81580rcu_preempt14377-1kworker/0:0H11:07:090
81580rcu_preempt0-21swapper/110:49:441
81580rcu_preempt0-21swapper/110:07:111
81580rcu_preempt0-21swapper/107:45:481
81580rcu_preempt0-21swapper/107:22:021
81580rcu_preempt0-21swapper/010:06:060
81580rcu_preempt0-21swapper/009:40:140
81580rcu_preempt0-21swapper/007:47:050
81570rcu_preempt9293-21ssh09:50:480
81570rcu_preempt31831-21ssh11:30:500
81570rcu_preempt27618-21ssh12:21:030
81570rcu_preempt22261-21ssh10:13:240
81570rcu_preempt21179-21ssh09:13:031
81570rcu_preempt16740-21ssh11:02:410
81570rcu_preempt11368-21ssh10:52:550
81570rcu_preempt0-21swapper/112:18:351
81570rcu_preempt0-21swapper/111:27:021
81570rcu_preempt0-21swapper/111:12:281
81570rcu_preempt0-21swapper/108:06:461
81570rcu_preempt0-21swapper/107:32:061
81570rcu_preempt0-21swapper/008:42:050
89950560irq/17-ehci_hcd945-21usb-storage12:22:010
81560rcu_preempt22765-21sshd07:14:290
81560rcu_preempt0-21swapper/110:17:121
81560rcu_preempt0-21swapper/109:04:281
81560rcu_preempt0-21swapper/107:59:011
81560rcu_preempt0-21swapper/008:07:010
81550rcu_preempt0-21swapper/109:11:271
81550rcu_preempt0-21swapper/108:52:501
81550rcu_preempt0-21swapper/108:33:121
81550rcu_preempt0-21swapper/107:55:551
81550rcu_preempt0-21swapper/107:15:561
81550rcu_preempt0-21swapper/007:52:100
81540rcu_preempt28359-21ssh11:23:480
81540rcu_preempt0-21swapper/108:04:351
81540rcu_preempt0-21swapper/012:31:540
81520rcu_preempt0-21swapper/009:01:550
81520rcu_preempt0-21swapper/008:17:300
81510rcu_preempt28552-21memory07:37:051
81510rcu_preempt15126-21memory08:52:060
81510rcu_preempt0-21swapper/108:59:461
81510rcu_preempt0-21swapper/007:56:550
21537995148cyclictest945-21usb-storage08:37:060
21537995148cyclictest945-21usb-storage08:37:060
21537995147cyclictest945-21usb-storage08:50:020
146250510irq/28-eth0-rx-41ktimersoftd/008:06:070
81500rcu_preempt0-21swapper/008:57:080
81490rcu_preempt2192-21snmpd08:36:130
81480rcu_preempt0-21swapper/008:27:080
81480rcu_preempt0-21swapper/007:38:140
146650460irq/31-eth0-tx-5055-21wc08:12:080
81420rcu_preempt29395-21df07:41:590
81350rcu_preempt25227-21cat07:22:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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