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2026-03-22 - 17:38
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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 Sun Mar 22, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850830irq/17-ehci_hcd7279-21if_can109:54:450
81820rcu_preempt16900-21if_can011:14:460
81800rcu_preempt19-21ksoftirqd/112:28:071
147950760irq/31-eth0-tx-171rcuc/112:36:111
81730rcu_preempt0-21swapper/011:39:470
81720rcu_preempt19-21ksoftirqd/111:04:301
81720rcu_preempt0-21swapper/010:34:570
81710rcu_preempt18593-21sort07:09:401
81710rcu_preempt0-21swapper/110:42:481
81710rcu_preempt0-21swapper/109:25:231
81710rcu_preempt0-21swapper/009:19:510
81710rcu_preempt0-21swapper/007:09:370
81700rcu_preempt0-21swapper/111:09:471
81700rcu_preempt0-21swapper/110:49:341
81690rcu_preempt3729-21sh11:50:041
81690rcu_preempt17630-21diskmemload10:47:571
81690rcu_preempt12783-21ssh10:04:470
81690rcu_preempt0-21swapper/011:04:460
81690rcu_preempt0-21swapper/009:50:510
81680rcu_preempt536-21ssh11:44:500
81680rcu_preempt536-21ssh11:44:500
81680rcu_preempt17630-21diskmemload10:12:530
81680rcu_preempt0-21swapper/110:59:551
81680rcu_preempt0-21swapper/110:16:121
81670rcu_preempt29345-21ntp_states07:49:520
81670rcu_preempt21818-21users09:19:541
81670rcu_preempt0-21swapper/111:32:501
81670rcu_preempt0-21swapper/111:24:191
81670rcu_preempt0-21swapper/011:57:550
81660rcu_preempt28486-21munin-run07:49:281
81660rcu_preempt19-21ksoftirqd/111:34:391
81660rcu_preempt0-21swapper/011:34:400
81660rcu_preempt0-21swapper/011:19:490
81660rcu_preempt0-21swapper/009:09:520
81650rcu_preempt29828-21df_abs11:39:421
81650rcu_preempt0-21swapper/112:40:351
81650rcu_preempt0-21swapper/112:04:321
81650rcu_preempt0-21swapper/110:39:171
81650rcu_preempt0-21swapper/109:17:591
81650rcu_preempt0-21swapper/012:01:250
81650rcu_preempt0-21swapper/011:09:410
81650rcu_preempt0-21swapper/010:47:400
81650rcu_preempt0-21swapper/008:04:280
89850640irq/17-ehci_hcd945-21usb-storage08:07:101
81640rcu_preempt12681-21latency_hist08:54:281
81640rcu_preempt0-21swapper/108:14:531
81640rcu_preempt0-21swapper/010:15:040
81640rcu_preempt0-21swapper/009:34:520
81640rcu_preempt0-21swapper/009:04:410
81640rcu_preempt0-21swapper/008:57:020
81640rcu_preempt0-21swapper/008:09:410
81630rcu_preempt5392-21ssh09:49:591
81630rcu_preempt3844-21ssh10:49:500
81630rcu_preempt25996-21ssh09:29:301
81630rcu_preempt0-21swapper/012:21:200
81630rcu_preempt0-21swapper/011:24:540
81630rcu_preempt0-21swapper/009:43:140
81630rcu_preempt0-21swapper/008:19:410
81620rcu_preempt29776-1kworker/0:0H10:39:300
81620rcu_preempt26403-21grep12:34:480
81620rcu_preempt25948-21latency10:29:471
81620rcu_preempt20040-21ssh12:22:381
81620rcu_preempt11296-21sshd08:47:121
81620rcu_preempt1082-21ssh11:45:201
81620rcu_preempt1082-21ssh11:45:201
81620rcu_preempt0-21swapper/111:17:461
81620rcu_preempt0-21swapper/110:19:491
81620rcu_preempt0-21swapper/110:19:491
81620rcu_preempt0-21swapper/110:09:411
81620rcu_preempt0-21swapper/012:25:540
81620rcu_preempt0-21swapper/009:47:000
81620rcu_preempt0-21swapper/008:44:500
81610rcu_preempt3-21ksoftirqd/009:18:110
81610rcu_preempt26961-21mailstats07:39:511
81610rcu_preempt13507-21if_eth112:09:471
81610rcu_preempt0-21swapper/111:57:001
81610rcu_preempt0-21swapper/109:37:251
81610rcu_preempt0-21swapper/109:04:381
81610rcu_preempt0-21swapper/012:41:340
81610rcu_preempt0-21swapper/007:14:500
81600rcu_preempt7874-21ssh10:57:111
81600rcu_preempt31999-21mailstats07:59:531
81600rcu_preempt25427-21cpuspeed10:29:410
81600rcu_preempt24239-21ssh12:29:541
81600rcu_preempt23622-21ssh11:27:201
81600rcu_preempt2138-21snmpd08:34:031
81600rcu_preempt17630-21diskmemload11:32:190
81600rcu_preempt17346-21ssh12:17:321
81600rcu_preempt17311-21ssh12:17:250
81600rcu_preempt12986-21latency_hist12:09:290
81600rcu_preempt11741-21ssh10:03:511
81600rcu_preempt0-21swapper/111:59:461
81600rcu_preempt0-21swapper/110:26:151
81600rcu_preempt0-21swapper/110:06:031
81600rcu_preempt0-21swapper/109:54:521
81600rcu_preempt0-21swapper/011:51:520
81600rcu_preempt0-21swapper/008:14:470
81600rcu_preempt0-21swapper/007:19:480
81590rcu_preempt8566-21munin-run10:59:280
81590rcu_preempt32627-21ssh09:40:061
81590rcu_preempt0-21swapper/108:59:491
81590rcu_preempt0-21swapper/011:03:380
81580rcu_preempt21960-21smartctl07:19:541
81580rcu_preempt0-21swapper/108:49:501
81580rcu_preempt0-21swapper/012:06:400
81580rcu_preempt0-21swapper/010:01:580
81570rcu_preempt7473-21munin-run08:34:270
81570rcu_preempt21701-21ssh10:21:490
81570rcu_preempt21701-21ssh10:21:490
81570rcu_preempt1886-21fw_forwarded_lo09:44:441
81570rcu_preempt0-21swapper/108:35:391
81570rcu_preempt0-21swapper/107:49:461
81570rcu_preempt0-21swapper/007:44:530
81560rcu_preempt0-21swapper/109:11:001
81560rcu_preempt0-21swapper/107:31:101
81560rcu_preempt0-21swapper/010:25:530
81560rcu_preempt0-21swapper/009:29:520
81560rcu_preempt0-21swapper/009:24:490
81550rcu_preempt0-21swapper/108:42:501
81550rcu_preempt0-21swapper/108:28:201
81550rcu_preempt0-21swapper/008:39:520
81550rcu_preempt0-21swapper/007:24:440
81540rcu_preempt26350-21fw_conntrack07:39:420
81540rcu_preempt25093-21fw_conntrack07:34:431
81540rcu_preempt22581-21fw_conntrack07:24:431
81540rcu_preempt0-21swapper/012:29:480
81540rcu_preempt0-21swapper/009:01:520
81540rcu_preempt0-21swapper/007:59:450
81530rcu_preempt0-21swapper/108:19:391
81530rcu_preempt0-21swapper/107:55:081
81510rcu_preempt0-21swapper/008:53:270
81510rcu_preempt0-21swapper/007:33:550
81500rcu_preempt0-21swapper/008:27:250
81450rcu_preempt30982-21sshd07:58:520
81450rcu_preempt0-21swapper/008:35:180
1964799401cyclictest19768-21/usr/sbin/munin07:14:531
1964799401cyclictest1565-21if_can008:09:461
1964699382cyclictest0-21swapper/007:35:280
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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