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2026-03-19 - 14:32
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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 Thu Mar 19, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81820rcu_preempt26393-21munin-run23:59:191
81810rcu_preempt22216-21ps20:14:421
81810rcu_preempt19127-21sh22:42:291
81810rcu_preempt0-21swapper/119:11:141
81780rcu_preempt0-21swapper/100:42:131
81770rcu_preempt0-21swapper/123:29:191
81770rcu_preempt0-21swapper/121:09:141
147950770irq/31-eth0-tx-181ktimersoftd/100:38:311
81760rcu_preempt19-21ksoftirqd/123:11:001
81760rcu_preempt19-21ksoftirqd/121:30:301
81750rcu_preempt3450-21if_eth121:09:370
81750rcu_preempt30641-21sort23:04:361
81730rcu_preempt2584-1kworker/0:2H22:43:460
81730rcu_preempt0-21swapper/119:29:321
81720rcu_preempt9008-21grep23:24:390
81710rcu_preempt0-21swapper/023:54:210
81710rcu_preempt0-21swapper/021:29:280
81710rcu_preempt0-21swapper/000:34:330
81700rcu_preempt10075-21ssh22:24:410
81700rcu_preempt0-21swapper/022:35:180
81700rcu_preempt0-21swapper/022:15:350
81700rcu_preempt0-21swapper/000:20:080
81700rcu_preempt0-21swapper/000:04:060
89850690irq/17-ehci_hcd945-21usb-storage21:50:061
81690rcu_preempt0-21swapper/022:44:420
81690rcu_preempt0-21swapper/000:30:000
81680rcu_preempt29358-21switchtime21:59:430
81680rcu_preempt29329-21sh23:01:340
81680rcu_preempt0-21swapper/021:58:450
81670rcu_preempt0-21swapper/021:27:430
81670rcu_preempt0-21swapper/019:09:350
81660rcu_preempt7151-21ssh22:19:360
81660rcu_preempt0-21swapper/021:35:480
81650rcu_preempt19-21ksoftirqd/123:22:041
81650rcu_preempt0-21swapper/019:59:390
81640rcu_preempt0-21swapper/020:23:320
81630rcu_preempt0-21swapper/021:49:320
81630rcu_preempt0-21swapper/021:44:360
81630rcu_preempt0-21swapper/020:24:200
81630rcu_preempt0-21swapper/000:09:360
81620rcu_preempt20276-21cat21:44:180
81620rcu_preempt0-21swapper/023:05:510
81610rcu_preempt0-21swapper/023:16:110
81610rcu_preempt0-21swapper/019:39:410
81610rcu_preempt0-21swapper/000:04:240
81600rcu_preempt0-21swapper/019:14:310
81600rcu_preempt0-21swapper/000:42:460
81590rcu_preempt7052-21ssh23:19:590
81590rcu_preempt26458-21ssh22:55:471
81590rcu_preempt0-21swapper/123:46:451
81590rcu_preempt0-21swapper/123:01:121
81590rcu_preempt0-21swapper/122:01:271
81590rcu_preempt0-21swapper/100:09:451
81590rcu_preempt0-21swapper/023:49:360
81590rcu_preempt0-21swapper/023:42:310
81590rcu_preempt0-21swapper/021:17:100
81590rcu_preempt0-21swapper/020:29:360
81590rcu_preempt0-21swapper/019:35:540
81580rcu_preempt32544-21ssh22:05:521
81580rcu_preempt3082-21ssh00:16:181
81580rcu_preempt28797-21ssh00:03:251
81580rcu_preempt15152-21ssh23:36:201
81580rcu_preempt15152-21ssh23:36:201
81580rcu_preempt0-21swapper/123:49:361
81580rcu_preempt0-21swapper/122:36:541
81580rcu_preempt0-21swapper/122:32:531
81580rcu_preempt0-21swapper/121:35:471
81580rcu_preempt0-21swapper/121:21:201
81580rcu_preempt0-21swapper/121:19:131
81580rcu_preempt0-21swapper/120:10:551
81580rcu_preempt0-21swapper/100:21:071
81580rcu_preempt0-21swapper/100:07:041
81580rcu_preempt0-21swapper/023:38:200
81580rcu_preempt0-21swapper/023:38:200
81580rcu_preempt0-21swapper/023:32:300
81580rcu_preempt0-21swapper/022:32:360
81580rcu_preempt0-21swapper/022:05:150
81580rcu_preempt0-21swapper/020:56:110
81570rcu_preempt24969-21ssh22:54:240
81570rcu_preempt24532-21ssh22:53:281
81570rcu_preempt18637-21ntpq21:39:401
81570rcu_preempt13175-21ssh23:33:321
81570rcu_preempt11325-21ssh22:27:441
81570rcu_preempt0-21swapper/123:16:401
81570rcu_preempt0-21swapper/122:13:421
81570rcu_preempt0-21swapper/121:26:581
81570rcu_preempt0-21swapper/121:09:421
81570rcu_preempt0-21swapper/120:59:001
81570rcu_preempt0-21swapper/120:47:201
81570rcu_preempt0-21swapper/120:19:461
81570rcu_preempt0-21swapper/100:31:411
81570rcu_preempt0-21swapper/023:12:370
81570rcu_preempt0-21swapper/020:50:540
81570rcu_preempt0-21swapper/020:40:120
81570rcu_preempt0-21swapper/019:57:510
81560rcu_preempt21662-21ssh21:44:561
81560rcu_preempt19090-21if_can023:44:360
81560rcu_preempt0-21swapper/119:44:491
81560rcu_preempt0-21swapper/021:04:360
81560rcu_preempt0-21swapper/020:05:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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