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2025-04-02 - 08:05
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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 Apr 02, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81930rcu_preempt14696-21memory00:17:550
151250930irq/30-eth0-tx-181ktimersoftd/122:52:301
151350730irq/31-eth0-tx-0-21swapper/121:53:391
81720rcu_preempt0-21swapper/021:32:470
81710rcu_preempt19973-21sh22:27:521
81700rcu_preempt0-21swapper/100:01:381
81690rcu_preempt892-21memory22:52:480
81690rcu_preempt5167-21sh22:59:451
81690rcu_preempt32696-21apt-get23:52:411
81690rcu_preempt12765-21sh21:16:180
81690rcu_preempt0-21swapper/123:37:391
81690rcu_preempt0-21swapper/022:29:060
81680rcu_preempt9522-21sh00:08:141
81680rcu_preempt29443-1kworker/1:0H23:19:551
81680rcu_preempt28202-21diskstats22:42:480
81680rcu_preempt27719-21latency_hist22:42:320
81680rcu_preempt25387-21sendmail_mailqu21:37:570
81680rcu_preempt11865-21sh21:13:591
81680rcu_preempt10041-21diskmemload21:45:471
81680rcu_preempt0-21swapper/119:12:551
81680rcu_preempt0-21swapper/021:17:380
81680rcu_preempt0-21swapper/000:29:060
81670rcu_preempt6143-21/usr/sbin/munin23:02:320
81670rcu_preempt22908-21sh21:33:511
81670rcu_preempt0-21swapper/019:07:350
81670rcu_preempt0-21swapper/000:12:530
81660rcu_preempt0-21swapper/123:23:461
81660rcu_preempt0-21swapper/100:31:391
151250660irq/30-eth0-tx-945-21usb-storage00:36:570
81650rcu_preempt29487-21sh23:43:570
81650rcu_preempt0-21swapper/119:18:191
81650rcu_preempt0-21swapper/023:53:110
81650rcu_preempt0-21swapper/023:42:060
81650rcu_preempt0-21swapper/023:13:430
81650rcu_preempt0-21swapper/021:57:510
81650rcu_preempt0-21swapper/021:53:300
81650rcu_preempt0-21swapper/021:45:220
81640rcu_preempt6971-21memory23:02:521
81640rcu_preempt5158-21/usr/sbin/munin20:52:571
81640rcu_preempt31256-21df20:22:461
81640rcu_preempt14218-21mailstats19:07:561
81640rcu_preempt11155-21cpuspeed23:12:421
81640rcu_preempt0-21swapper/122:32:361
81640rcu_preempt0-21swapper/020:02:510
81640rcu_preempt0-21swapper/019:47:480
81630rcu_preempt8737-21ssh22:07:191
81630rcu_preempt27676-21ssh22:42:251
81630rcu_preempt22618-21open_files00:32:571
81630rcu_preempt0-21swapper/023:33:000
81620rcu_preempt29702-21munin-run20:17:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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