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2025-10-22 - 22:39
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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 Wed Oct 22, 2025 12:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950870irq/17-ehci_hcd171rcuc/112:35:211
81830rcu_preempt32526-21df11:30:230
81780rcu_preempt31802-21ps10:30:341
81770rcu_preempt0-21swapper/112:10:221
81760rcu_preempt0-21swapper/110:35:291
81760rcu_preempt0-21swapper/110:15:571
81760rcu_preempt0-21swapper/109:56:081
81750rcu_preempt19-21ksoftirqd/112:32:071
81740rcu_preempt4689-21ssh09:44:161
81740rcu_preempt0-21swapper/111:10:231
81740rcu_preempt0-21swapper/109:16:481
81730rcu_preempt19751-21diskmemload12:42:301
81730rcu_preempt18256-21sh11:05:111
81720rcu_preempt32554-21sendmail_mailst09:35:331
81720rcu_preempt32554-21sendmail_mailst09:35:331
81720rcu_preempt0-21swapper/112:04:521
81720rcu_preempt0-21swapper/012:19:260
81720rcu_preempt0-21swapper/009:45:320
81710rcu_preempt31109-21sh11:26:560
81710rcu_preempt21688-21sh12:08:161
81710rcu_preempt0-21swapper/112:20:351
81710rcu_preempt0-21swapper/108:30:301
81710rcu_preempt0-21swapper/108:10:101
81710rcu_preempt0-21swapper/107:10:341
81710rcu_preempt0-21swapper/011:45:420
81710rcu_preempt0-21swapper/010:00:330
81700rcu_preempt0-21swapper/011:19:000
81700rcu_preempt0-21swapper/009:27:130
81700rcu_preempt0-21swapper/009:10:230
81690rcu_preempt26749-21apt-get11:20:220
81690rcu_preempt0-21swapper/111:30:551
81680rcu_preempt0-21swapper/111:27:231
81680rcu_preempt0-21swapper/110:25:341
81680rcu_preempt0-21swapper/109:54:521
81670rcu_preempt9909-21df_abs08:35:230
81670rcu_preempt31454-21/usr/sbin/munin09:35:091
81670rcu_preempt31454-21/usr/sbin/munin09:35:091
81670rcu_preempt0-21swapper/110:20:571
141050670irq/28-eth0-rx-41ktimersoftd/010:55:080
89950660irq/17-ehci_hcd0-21swapper/110:55:451
81660rcu_preempt8879-21ssh09:50:520
81650rcu_preempt1308-21jbd2/sda3-810:55:081
81650rcu_preempt0-21swapper/110:45:381
81650rcu_preempt0-21swapper/010:28:020
81650rcu_preempt0-21swapper/007:10:250
81640rcu_preempt14608-21timerandwakeup08:50:361
81640rcu_preempt0-21swapper/012:32:490
81640rcu_preempt0-21swapper/008:10:340
81640rcu_preempt0-21swapper/007:40:340
81630rcu_preempt17513-21fgrep10:05:351
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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