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2026-03-13 - 22:32
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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 100 highest latencies:
System rackcslot3.osadl.org (updated Fri Mar 13, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811050rcu_preempt19-21ksoftirqd/109:17:201
81770rcu_preempt19692-1kworker/0:1H09:39:220
81750rcu_preempt12656-21ssh12:27:170
81730rcu_preempt12817-21sh11:24:460
81730rcu_preempt0-21swapper/007:54:270
81720rcu_preempt26009-1kworker/1:2H09:44:011
147850720irq/30-eth0-tx-945-21usb-storage10:27:041
81710rcu_preempt0-21swapper/111:00:341
81710rcu_preempt0-21swapper/010:56:450
81710rcu_preempt0-21swapper/008:24:210
81700rcu_preempt32000-21sh12:02:271
81700rcu_preempt26942-21ssh11:53:081
81700rcu_preempt17263-21ssh10:32:350
81700rcu_preempt0-21swapper/107:43:271
81690rcu_preempt12402-21sh09:22:070
81690rcu_preempt0-21swapper/112:27:271
81680rcu_preempt7406-21munin-run09:14:030
81680rcu_preempt7173-21ntp_states11:14:260
81680rcu_preempt28654-21fw_forwarded_lo10:54:191
81680rcu_preempt0-21swapper/112:35:501
81680rcu_preempt0-21swapper/011:49:210
81670rcu_preempt0-21swapper/111:54:131
81670rcu_preempt0-21swapper/111:34:281
81670rcu_preempt0-21swapper/111:15:421
147950670irq/31-eth0-tx-14807-1kworker/0:0H09:27:380
81660rcu_preempt9093-21uname07:09:250
81660rcu_preempt13455-21sed09:24:181
81660rcu_preempt0-21swapper/111:11:361
81660rcu_preempt0-21swapper/010:53:540
81650rcu_preempt30247-21ssh11:59:190
81650rcu_preempt18696-21ssh09:34:191
81650rcu_preempt0-21swapper/112:29:551
81650rcu_preempt0-21swapper/009:33:460
81640rcu_preempt5369-21needreboot10:09:241
81640rcu_preempt22032-21sendmail08:04:030
81640rcu_preempt10701-21rm11:21:241
81640rcu_preempt0-21swapper/012:35:170
81640rcu_preempt0-21swapper/010:47:200
81630rcu_preempt2138-21snmpd11:27:541
81630rcu_preempt0-21swapper/109:54:161
81630rcu_preempt0-21swapper/109:44:111
81630rcu_preempt0-21swapper/012:09:160
81620rcu_preempt6904-21ssh12:15:351
81620rcu_preempt3587-21sshd08:57:261
81620rcu_preempt30930-21munin-run08:39:041
81620rcu_preempt2907-21sh11:06:251
81620rcu_preempt17989-21df10:34:181
81620rcu_preempt11264-21ssh10:20:241
81620rcu_preempt0-21swapper/109:29:041
81620rcu_preempt0-21swapper/108:29:281
81620rcu_preempt0-21swapper/010:35:400
81620rcu_preempt0-21swapper/007:39:030
81610rcu_preempt8255-21latency_hist07:09:041
81610rcu_preempt7404-21diskmemload12:43:091
81610rcu_preempt3-21ksoftirqd/010:10:050
81610rcu_preempt0-21swapper/110:01:171
81610rcu_preempt0-21swapper/109:19:251
81610rcu_preempt0-21swapper/107:29:251
81600rcu_preempt28319-21ssh09:51:511
81600rcu_preempt2691-21ssh12:08:450
81600rcu_preempt18878-21kernelversion07:49:231
81600rcu_preempt1705-21ssh10:03:510
81600rcu_preempt1449-21forks08:49:201
81600rcu_preempt14417-21sed11:29:181
81600rcu_preempt14079-21ssh12:29:280
81600rcu_preempt0-21swapper/110:53:461
81600rcu_preempt0-21swapper/110:29:241
81600rcu_preempt0-21swapper/108:04:181
81600rcu_preempt0-21swapper/011:04:130
81600rcu_preempt0-21swapper/008:54:300
81590rcu_preempt3789-21ssh11:09:140
81590rcu_preempt2762-21ntp_states10:04:231
81590rcu_preempt23156-21ssh10:44:091
81590rcu_preempt2138-21snmpd08:02:111
81590rcu_preempt0-21swapper/111:45:111
81590rcu_preempt0-21swapper/108:44:101
81590rcu_preempt0-21swapper/012:14:290
81590rcu_preempt0-21swapper/010:43:270
81590rcu_preempt0-21swapper/009:59:000
81590rcu_preempt0-21swapper/009:49:290
81590rcu_preempt0-21swapper/008:09:160
89850580irq/17-ehci_hcd945-21usb-storage07:14:101
81580rcu_preempt9462-21ssh12:20:121
81580rcu_preempt0-21swapper/110:17:231
81580rcu_preempt0-21swapper/109:09:231
81580rcu_preempt0-21swapper/108:14:211
81580rcu_preempt0-21swapper/011:19:130
81580rcu_preempt0-21swapper/010:14:230
81580rcu_preempt0-21swapper/008:14:160
81580rcu_preempt0-21swapper/007:46:400
81570rcu_preempt9776-21ssh12:21:200
81570rcu_preempt31840-21ps08:39:250
81570rcu_preempt31075-21egrep08:39:151
81570rcu_preempt26251-21sed08:19:181
81570rcu_preempt20872-21ssh09:38:410
81570rcu_preempt11862-21ssh10:22:200
81570rcu_preempt0-21swapper/112:09:231
81570rcu_preempt0-21swapper/110:40:241
81570rcu_preempt0-21swapper/109:05:251
81570rcu_preempt0-21swapper/107:46:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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