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2026-05-13 - 16:13
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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 13, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950840irq/17-ehci_hcd945-21usb-storage12:01:011
81760rcu_preempt0-21swapper/007:06:250
81730rcu_preempt715-21open_files10:11:331
81730rcu_preempt10155-1kworker/0:0H11:07:590
89550720irq/17-ehci_hcd31973-21/usr/sbin/munin07:06:321
81720rcu_preempt0-21swapper/012:01:290
89150710irq/17-ehci_hcd18277-21ssh10:44:010
81710rcu_preempt20606-21ssh09:48:550
81710rcu_preempt0-21swapper/012:34:440
81710rcu_preempt0-21swapper/011:51:200
81710rcu_preempt0-21swapper/010:26:240
81700rcu_preempt4220-21sh09:20:010
81700rcu_preempt18193-21grep08:16:341
81700rcu_preempt1200-21sh09:14:510
81700rcu_preempt0-21swapper/008:46:360
81700rcu_preempt0-21swapper/008:36:260
81690rcu_preempt3127-21apt-get11:16:210
81690rcu_preempt0-21swapper/109:32:211
81690rcu_preempt0-21swapper/011:14:190
81680rcu_preempt24815-21munin-run08:46:100
81680rcu_preempt0-21swapper/112:22:201
81680rcu_preempt0-21swapper/111:11:511
81680rcu_preempt0-21swapper/110:58:571
81680rcu_preempt0-21swapper/009:52:480
81670rcu_preempt9401-21missed_timers11:26:310
81670rcu_preempt0-21swapper/112:34:491
81670rcu_preempt0-21swapper/110:06:301
81670rcu_preempt0-21swapper/107:42:521
81670rcu_preempt0-21swapper/010:23:030
81660rcu_preempt2192-21snmpd08:11:100
81660rcu_preempt0-21swapper/108:50:211
81660rcu_preempt0-21swapper/008:06:220
81650rcu_preempt8048-21memory09:26:291
81650rcu_preempt6856-21sh10:22:131
81650rcu_preempt17877-21ssh10:42:361
81650rcu_preempt15915-21ssh09:41:220
81650rcu_preempt13555-21munin-run10:36:101
81650rcu_preempt0-21swapper/112:37:361
81650rcu_preempt0-21swapper/111:27:551
81650rcu_preempt0-21swapper/108:56:291
81650rcu_preempt0-21swapper/108:51:181
81650rcu_preempt0-21swapper/108:41:301
81640rcu_preempt29934-21/usr/sbin/munin10:06:250
81640rcu_preempt18137-21ssh11:41:481
81640rcu_preempt1699-21munin-run09:16:101
81640rcu_preempt0-21swapper/110:51:001
81640rcu_preempt0-21swapper/109:42:291
81640rcu_preempt0-21swapper/107:26:241
81640rcu_preempt0-21swapper/009:06:330
81640rcu_preempt0-21swapper/008:51:180
81630rcu_preempt3-21ksoftirqd/010:16:240
81630rcu_preempt0-21swapper/012:41:010
81630rcu_preempt0-21swapper/011:46:230
81630rcu_preempt0-21swapper/008:56:240
81620rcu_preempt5815-21munin-run07:31:090
81620rcu_preempt3-21ksoftirqd/011:03:270
81620rcu_preempt24312-21sshd10:55:530
81620rcu_preempt18746-21cpu09:46:231
81620rcu_preempt0-21swapper/111:06:281
81620rcu_preempt0-21swapper/110:41:041
81620rcu_preempt0-21swapper/110:41:041
81620rcu_preempt0-21swapper/109:51:261
81620rcu_preempt0-21swapper/011:31:180
81620rcu_preempt0-21swapper/008:16:100
81610rcu_preempt5959-21ssh11:21:191
81610rcu_preempt23674-21ssh10:53:421
81610rcu_preempt15421-21ssh09:40:061
81610rcu_preempt0-21swapper/111:18:151
81610rcu_preempt0-21swapper/111:01:341
81610rcu_preempt0-21swapper/108:11:341
81610rcu_preempt0-21swapper/011:41:340
81610rcu_preempt0-21swapper/009:21:350
89950600irq/17-ehci_hcd6474-21ssh09:23:231
81600rcu_preempt21218-21ssh11:48:061
81600rcu_preempt13693-21ssh11:35:321
81600rcu_preempt0-21swapper/112:07:261
81600rcu_preempt0-21swapper/109:56:361
81600rcu_preempt0-21swapper/109:16:181
81600rcu_preempt0-21swapper/011:00:370
81600rcu_preempt0-21swapper/007:31:350
676996043cyclictest181ktimersoftd/110:06:101
81590rcu_preempt8598-21ssh10:26:271
81590rcu_preempt28470-21ssh12:01:311
81590rcu_preempt2283-21ssh12:12:341
81590rcu_preempt15795-21ssh11:38:151
81590rcu_preempt0-21swapper/112:16:371
81590rcu_preempt0-21swapper/111:55:341
81590rcu_preempt0-21swapper/110:16:251
81590rcu_preempt0-21swapper/012:16:400
81580rcu_preempt7626-21ssh11:23:130
81580rcu_preempt21100-21ssh10:49:170
81580rcu_preempt0-21swapper/109:06:241
81580rcu_preempt0-21swapper/108:37:221
81580rcu_preempt0-21swapper/108:21:351
81580rcu_preempt0-21swapper/108:06:331
81580rcu_preempt0-21swapper/012:08:380
81580rcu_preempt0-21swapper/011:39:200
81580rcu_preempt0-21swapper/010:11:150
81580rcu_preempt0-21swapper/009:58:340
81580rcu_preempt0-21swapper/009:39:090
81580rcu_preempt0-21swapper/009:31:520
81570rcu_preempt8967-21ssh12:26:180
81570rcu_preempt28952-21ssh10:04:340
81570rcu_preempt2737-21ssh12:14:000
81570rcu_preempt10683-21ssh12:28:121
81570rcu_preempt0-21swapper/109:02:401
81570rcu_preempt0-21swapper/107:32:531
81570rcu_preempt0-21swapper/009:29:200
81560rcu_preempt3285-21munin-run07:21:100
81560rcu_preempt0-21swapper/107:56:301
81560rcu_preempt0-21swapper/107:49:001
81560rcu_preempt0-21swapper/107:11:351
81550rcu_preempt31120-21diskmemload12:22:280
81550rcu_preempt26712-21ssh11:58:090
81550rcu_preempt11848-21sendmail_mailqu10:31:350
81550rcu_preempt0-21swapper/108:35:291
81550rcu_preempt0-21swapper/008:21:320
81550rcu_preempt0-21swapper/007:41:310
81550rcu_preempt0-21swapper/007:21:320
81540rcu_preempt15118-21ssh10:37:220
81540rcu_preempt15118-21ssh10:37:220
81540rcu_preempt0-21swapper/108:01:351
81540rcu_preempt0-21swapper/107:22:341
81540rcu_preempt0-21swapper/008:26:260
81530rcu_preempt0-21swapper/107:38:521
81530rcu_preempt0-21swapper/009:02:530
81520rcu_preempt19896-21/usr/sbin/munin08:26:311
81520rcu_preempt0-21swapper/107:19:581
81520rcu_preempt0-21swapper/008:00:440
81510rcu_preempt0-21swapper/007:36:380
81500rcu_preempt21398-21df_inode08:31:240
676994946cyclictest945-21usb-storage07:51:251
81480rcu_preempt0-21swapper/008:02:190
675994036cyclictest945-21usb-storage07:51:090
89550390irq/17-ehci_hcd981-21/usr/sbin/munin07:11:250
67599343cyclictest31625-21kworker/0:107:51:410
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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