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2025-12-24 - 22:14
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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 792 highest latencies:
System rackcslot3.osadl.org (updated Wed Dec 24, 2025 12:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81960rcu_preempt0-21swapper/011:10:490
147950770irq/31-eth0-tx-41ktimersoftd/010:53:050
81750rcu_preempt26324-21ssh11:04:120
81750rcu_preempt24779-21ntpdc11:00:521
81750rcu_preempt15686-21ntp_states10:45:491
89850720irq/17-ehci_hcd0-21swapper/108:22:511
81720rcu_preempt32115-21latency_hist07:40:281
81720rcu_preempt22427-21diskmemload11:55:530
81710rcu_preempt5687-21ssh11:23:261
81700rcu_preempt0-21swapper/007:40:460
81680rcu_preempt28058-21timerandwakeup11:05:531
81680rcu_preempt0-21swapper/110:58:111
81680rcu_preempt0-21swapper/110:50:551
81680rcu_preempt0-21swapper/110:15:471
81680rcu_preempt0-21swapper/107:45:521
81680rcu_preempt0-21swapper/011:28:260
81680rcu_preempt0-21swapper/011:21:390
81680rcu_preempt0-21swapper/010:24:380
81680rcu_preempt0-21swapper/009:25:290
81670rcu_preempt22427-21diskmemload09:31:040
81670rcu_preempt12536-21memory10:40:490
81670rcu_preempt0-21swapper/112:36:511
81670rcu_preempt0-21swapper/007:05:470
81660rcu_preempt22427-21diskmemload11:47:231
81660rcu_preempt0-21swapper/112:16:511
81660rcu_preempt0-21swapper/111:42:131
81660rcu_preempt0-21swapper/111:15:471
81660rcu_preempt0-21swapper/110:41:141
81660rcu_preempt0-21swapper/109:10:421
81660rcu_preempt0-21swapper/108:05:541
81660rcu_preempt0-21swapper/012:10:430
81650rcu_preempt7945-21sh10:33:201
81650rcu_preempt30929-21ssh12:05:461
81650rcu_preempt20066-21cpuspeed_turbos09:00:420
81650rcu_preempt15851-21df_inode11:40:420
81650rcu_preempt0-21swapper/111:39:561
81650rcu_preempt0-21swapper/111:39:561
81650rcu_preempt0-21swapper/009:52:540
81640rcu_preempt3684-21ssh10:25:500
81640rcu_preempt0-21swapper/111:30:461
81640rcu_preempt0-21swapper/109:56:201
81640rcu_preempt0-21swapper/012:08:110
81640rcu_preempt0-21swapper/010:58:470
81640rcu_preempt0-21swapper/010:04:290
81630rcu_preempt4749-21latency_hist08:00:280
81630rcu_preempt11032-21cron09:45:281
81630rcu_preempt0-21swapper/112:23:281
81630rcu_preempt0-21swapper/110:12:071
81630rcu_preempt0-21swapper/012:24:350
81620rcu_preempt29442-21ssh09:20:510
81620rcu_preempt25376-21ssh10:08:371
81620rcu_preempt0-21swapper/112:04:551
81620rcu_preempt0-21swapper/107:15:551
81620rcu_preempt0-21swapper/012:25:450
81620rcu_preempt0-21swapper/010:48:480
81620rcu_preempt0-21swapper/009:10:530
81620rcu_preempt0-21swapper/008:20:410
81610rcu_preempt19990-21munin-run10:00:290
81610rcu_preempt0-21swapper/111:59:151
81610rcu_preempt0-21swapper/111:55:151
81610rcu_preempt0-21swapper/110:25:491
81610rcu_preempt0-21swapper/109:19:021
81610rcu_preempt0-21swapper/108:15:411
81610rcu_preempt0-21swapper/107:27:231
81610rcu_preempt0-21swapper/107:12:111
81610rcu_preempt0-21swapper/010:35:550
81610rcu_preempt0-21swapper/008:05:520
81610rcu_preempt0-21swapper/007:20:520
81600rcu_preempt8605-21ssh11:28:121
81600rcu_preempt6484-21ssh09:36:051
81600rcu_preempt0-21swapper/012:31:440
81590rcu_preempt3-21ksoftirqd/012:35:280
81590rcu_preempt14716-21sshd12:31:511
81590rcu_preempt1359-21ssh12:10:431
81590rcu_preempt0-21swapper/112:27:271
81590rcu_preempt0-21swapper/110:20:281
81590rcu_preempt0-21swapper/109:46:521
81590rcu_preempt0-21swapper/109:27:581
81590rcu_preempt0-21swapper/011:47:420
81590rcu_preempt0-21swapper/008:35:470
81590rcu_preempt0-21swapper/007:35:490
81590rcu_preempt0-21swapper/007:30:510
81580rcu_preempt32283-21ssh11:14:081
81580rcu_preempt21993-21ssh10:02:301
81580rcu_preempt0-21swapper/110:37:081
81580rcu_preempt0-21swapper/109:54:281
81580rcu_preempt0-21swapper/109:20:541
81580rcu_preempt0-21swapper/108:30:261
81570rcu_preempt26592-21proc_pri07:15:500
81570rcu_preempt13105-21ntpq08:31:251
81570rcu_preempt0-21swapper/011:37:490
81570rcu_preempt0-21swapper/011:37:490
81570rcu_preempt0-21swapper/009:35:590
81570rcu_preempt0-21swapper/008:55:520
89850560irq/17-ehci_hcd181ktimersoftd/107:05:511
81560rcu_preempt31453-21memory07:35:481
81560rcu_preempt27358-21df_inode07:20:451
81560rcu_preempt2138-21snmpd08:40:281
81560rcu_preempt12174-21ssh11:34:520
81560rcu_preempt12012-21ntp_states09:45:490
81560rcu_preempt10002-21ssh09:42:340
81560rcu_preempt0-21swapper/108:04:291
81560rcu_preempt0-21swapper/011:06:340
81560rcu_preempt0-21swapper/010:15:430
81560rcu_preempt0-21swapper/009:20:140
81550rcu_preempt29300-21ssh12:02:170
81550rcu_preempt28233-21ssh10:13:140
81550rcu_preempt25837-21ssh10:09:570
81550rcu_preempt0-21swapper/108:55:451
81550rcu_preempt0-21swapper/108:51:281
81550rcu_preempt0-21swapper/108:49:171
81550rcu_preempt0-21swapper/108:00:011
81550rcu_preempt0-21swapper/008:45:510
81550rcu_preempt0-21swapper/007:45:520
81540rcu_preempt786-21diskstats11:15:430
81540rcu_preempt24114-21ssh11:54:370
81540rcu_preempt0-21swapper/109:01:561
81540rcu_preempt0-21swapper/007:51:150
81530rcu_preempt4439-21ssh09:33:471
81530rcu_preempt0-21swapper/108:36:081
81530rcu_preempt0-21swapper/012:15:510
81520rcu_preempt11140-21/usr/sbin/munin08:25:520
81520rcu_preempt0-21swapper/010:31:010
81520rcu_preempt0-21swapper/008:32:260
81520rcu_preempt0-21swapper/008:16:290
81520rcu_preempt0-21swapper/008:10:320
81520rcu_preempt0-21swapper/008:04:160
81520rcu_preempt0-21swapper/007:10:450
89850510irq/17-ehci_hcd945-21usb-storage07:50:381
81490rcu_preempt0-21swapper/109:10:001
81470rcu_preempt0-21swapper/009:06:170
81470rcu_preempt0-21swapper/007:28:330
81460rcu_preempt0-21swapper/108:11:511
81430rcu_preempt15422-21irqstats08:40:460
81380rcu_preempt18179-21ntp_states08:50:490
81340rcu_preempt0-21swapper/107:30:401
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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