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2026-04-10 - 23:42
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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 376 highest latencies:
System rackcslot3.osadl.org (updated Fri Apr 10, 2026 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89450920irq/17-ehci_hcd111rcuc/007:50:350
81770rcu_preempt0-21swapper/110:20:421
81760rcu_preempt0-21swapper/110:16:161
81750rcu_preempt7360-21sh09:49:101
81750rcu_preempt21580-21diskmemload12:11:591
81750rcu_preempt0-21swapper/109:00:321
81740rcu_preempt2670-21latency_hist08:00:191
81740rcu_preempt12380-21sh09:57:551
81740rcu_preempt0-21swapper/111:40:261
81740rcu_preempt0-21swapper/110:50:441
81740rcu_preempt0-21swapper/108:25:361
81730rcu_preempt542-21sh10:37:431
81730rcu_preempt0-21swapper/112:35:411
81720rcu_preempt31338-21ssh11:35:500
81710rcu_preempt28247-21sh10:28:560
81710rcu_preempt26335-21cpuspeed_turbos10:25:321
81710rcu_preempt20262-21kworker/1:007:14:401
81710rcu_preempt15354-21ntp_states11:05:410
81710rcu_preempt0-21swapper/011:10:360
81710rcu_preempt0-21swapper/010:40:480
81710rcu_preempt0-21swapper/009:25:260
81710rcu_preempt0-21swapper/009:20:370
81700rcu_preempt0-21swapper/110:55:431
89850690irq/17-ehci_hcd945-21usb-storage09:10:311
81690rcu_preempt19-21ksoftirqd/111:57:291
81680rcu_preempt21580-21diskmemload10:08:520
81680rcu_preempt1537-21ssh09:37:000
81680rcu_preempt0-21swapper/109:21:381
81670rcu_preempt6792-21diskmemload09:46:520
81670rcu_preempt21580-21diskmemload09:42:440
81670rcu_preempt0-21swapper/012:18:440
81660rcu_preempt2926-21ssh11:45:290
81660rcu_preempt19-21ksoftirqd/111:47:331
81660rcu_preempt0-21swapper/011:04:570
81650rcu_preempt17919-21/usr/sbin/munin09:00:420
81650rcu_preempt0-21swapper/012:22:120
81640rcu_preempt0-21swapper/010:03:080
81630rcu_preempt0-21swapper/010:55:320
81630rcu_preempt0-21swapper/007:20:410
89850620irq/17-ehci_hcd0-21swapper/011:24:010
81620rcu_preempt0-21swapper/011:16:350
81620rcu_preempt0-21swapper/010:45:360
147950620irq/31-eth0-tx-2715-21apache210:12:501
89850610irq/17-ehci_hcd945-21usb-storage10:23:180
81610rcu_preempt2138-21snmpd09:34:370
81600rcu_preempt19-21ksoftirqd/109:15:211
81600rcu_preempt19-21ksoftirqd/109:15:211
81590rcu_preempt14896-21ssh10:02:551
81590rcu_preempt0-21swapper/012:11:490
81590rcu_preempt0-21swapper/011:50:380
81580rcu_preempt9390-21ssh11:55:490
81580rcu_preempt2863-21kworker/0:107:14:450
81580rcu_preempt0-21swapper/012:25:210
81580rcu_preempt0-21swapper/009:51:120
81580rcu_preempt0-21swapper/008:25:400
81570rcu_preempt7636-21ssh10:50:420
81570rcu_preempt32090-21ps07:45:420
81570rcu_preempt29554-21ssh11:33:500
81570rcu_preempt23795-21ssh09:18:300
81570rcu_preempt23795-21ssh09:18:300
81570rcu_preempt23299-21ssh10:20:090
81570rcu_preempt19-21ksoftirqd/111:01:401
81570rcu_preempt0-21swapper/012:38:170
81570rcu_preempt0-21swapper/012:09:170
81570rcu_preempt0-21swapper/011:42:010
81570rcu_preempt0-21swapper/010:10:340
89850560irq/17-ehci_hcd945-21usb-storage12:43:541
89850560irq/17-ehci_hcd171rcuc/109:40:191
81560rcu_preempt14027-21kworker/1:011:52:331
81560rcu_preempt0-21swapper/012:45:060
81560rcu_preempt0-21swapper/012:02:300
81560rcu_preempt0-21swapper/010:31:000
81560rcu_preempt0-21swapper/009:06:300
81560rcu_preempt0-21swapper/008:33:550
81560rcu_preempt0-21swapper/008:05:330
81560rcu_preempt0-21swapper/008:01:130
81560rcu_preempt0-21swapper/007:35:410
89850550irq/17-ehci_hcd945-21usb-storage07:39:051
81550rcu_preempt0-21swapper/008:57:010
89850540irq/17-ehci_hcd945-21usb-storage10:30:321
81540rcu_preempt12601-21ssh09:58:430
81540rcu_preempt0-21swapper/012:31:570
81540rcu_preempt0-21swapper/011:26:020
81540rcu_preempt0-21swapper/009:10:520
23600995439cyclictest181ktimersoftd/112:08:461
89850530irq/17-ehci_hcd945-21usb-storage07:45:341
89850530irq/17-ehci_hcd0-21swapper/107:23:531
81530rcu_preempt32553-21rm10:35:530
81530rcu_preempt0-21swapper/007:58:350
81520rcu_preempt15679-21fw_forwarded_lo08:50:350
23600995249cyclictest945-21usb-storage10:47:031
81510rcu_preempt19-21ksoftirqd/111:12:261
81510rcu_preempt19-21ksoftirqd/109:45:091
81510rcu_preempt0-21swapper/112:25:331
81510rcu_preempt0-21swapper/007:17:480
23600995148cyclictest945-21usb-storage11:33:331
23600995148cyclictest945-21usb-storage07:44:511
81500rcu_preempt19-21ksoftirqd/110:45:181
23600995047cyclictest945-21usb-storage07:54:001
23600995042cyclictest945-21usb-storage08:11:101
23599995047cyclictest945-21usb-storage08:10:370
23599995047cyclictest945-21usb-storage07:30:390
81490rcu_preempt19-21ksoftirqd/109:51:281
23600994946cyclictest945-21usb-storage09:06:361
23600994946cyclictest945-21usb-storage08:53:111
147950490irq/31-eth0-tx-0-21swapper/112:24:341
147950490irq/31-eth0-tx-0-21swapper/111:29:271
147950490irq/31-eth0-tx-0-21swapper/109:28:521
147650490irq/28-eth0-rx-14992-21/usr/sbin/munin11:05:371
81480rcu_preempt8091-21fw_conntrack08:20:350
81480rcu_preempt19-21ksoftirqd/111:22:041
81480rcu_preempt19-21ksoftirqd/109:34:151
81470rcu_preempt0-21swapper/008:39:030
81470rcu_preempt0-21swapper/007:27:020
23599994714cyclictest0-21swapper/007:43:210
147950470irq/31-eth0-tx-0-21swapper/111:19:181
147950470irq/31-eth0-tx-0-21swapper/110:08:351
147850460irq/30-eth0-tx-0-21swapper/108:45:411
81450rcu_preempt0-21swapper/008:45:450
23600994542cyclictest945-21usb-storage08:42:241
23599994542cyclictest945-21usb-storage08:15:400
147950450irq/31-eth0-tx-0-21swapper/112:30:391
2359999442cyclictest0-21swapper/008:40:230
23600994340cyclictest945-21usb-storage07:27:471
147950420irq/31-eth0-tx-32271-21rm11:39:201
89850410irq/17-ehci_hcd945-21usb-storage08:00:331
147950410irq/31-eth0-tx-20303-21ssh12:18:141
89850400irq/17-ehci_hcd945-21usb-storage08:20:311
89850390irq/17-ehci_hcd0-21swapper/108:59:281
23600993936cyclictest14027-21kworker/1:012:01:531
89850380irq/17-ehci_hcd945-21usb-storage07:15:311
89850380irq/17-ehci_hcd6564-21/usr/sbin/munin08:15:401
147950380irq/31-eth0-tx-0-21swapper/108:35:431
89850370irq/17-ehci_hcd945-21usb-storage08:30:431
89850370irq/17-ehci_hcd945-21usb-storage08:05:321
81350rcu_preempt19-21ksoftirqd/107:35:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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