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2025-09-16 - 22:10
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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 50 highest latencies:
System rackcslot3.osadl.org (updated Tue Sep 16, 2025 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1413501050irq/31-eth0-tx-29105-21kworker/1:207:10:361
81760rcu_preempt15876-1kworker/0:2H12:39:530
81760rcu_preempt0-21swapper/007:09:000
81740rcu_preempt20807-21mailstats07:19:101
81730rcu_preempt25190-21ssh09:28:460
81730rcu_preempt13206-21ssh12:04:590
81720rcu_preempt4720-21ntp_offset08:23:571
81720rcu_preempt16860-21ssh11:13:010
81720rcu_preempt0-21swapper/011:26:020
81710rcu_preempt4131-21df_inode10:48:520
81710rcu_preempt3-21ksoftirqd/010:38:490
81710rcu_preempt16456-21diskmemload10:03:000
81710rcu_preempt0-21swapper/111:21:441
81710rcu_preempt0-21swapper/111:14:001
81710rcu_preempt0-21swapper/011:36:460
81710rcu_preempt0-21swapper/010:56:350
81710rcu_preempt0-21swapper/009:56:350
81710rcu_preempt0-21swapper/008:53:510
81700rcu_preempt16456-21diskmemload10:22:530
81690rcu_preempt0-21swapper/111:29:111
81690rcu_preempt0-21swapper/110:31:271
81690rcu_preempt0-21swapper/011:46:520
81690rcu_preempt0-21swapper/011:21:370
89950680irq/17-ehci_hcd945-21usb-storage12:28:360
81680rcu_preempt857-21munin-run09:43:361
81680rcu_preempt7809-21ssh11:55:090
81680rcu_preempt0-21swapper/112:09:051
81680rcu_preempt0-21swapper/109:57:171
89550670irq/17-ehci_hcd0-21swapper/009:27:520
81670rcu_preempt30319-21diskstats07:58:520
81670rcu_preempt26163-21munin-run07:43:350
81670rcu_preempt18676-21cat07:13:360
81670rcu_preempt0-21swapper/112:26:281
81670rcu_preempt0-21swapper/110:56:021
81670rcu_preempt0-21swapper/110:46:371
81660rcu_preempt23087-21needreboot12:23:570
81660rcu_preempt0-21swapper/111:44:031
81660rcu_preempt0-21swapper/009:19:210
81650rcu_preempt17189-21cpuspeed_turbos12:13:511
81650rcu_preempt0-21swapper/110:42:051
81650rcu_preempt0-21swapper/110:02:401
81650rcu_preempt0-21swapper/108:48:471
81640rcu_preempt0-21swapper/110:04:511
81640rcu_preempt0-21swapper/010:06:510
81630rcu_preempt3-21ksoftirqd/010:25:140
81630rcu_preempt28122-21/usr/sbin/munin10:33:541
81630rcu_preempt18572-21cyclictest11:02:190
81630rcu_preempt16456-21diskmemload10:16:170
81620rcu_preempt9866-21grep08:43:571
81620rcu_preempt29349-21sh12:37:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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