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2026-04-06 - 18:30
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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 792 highest latencies:
System rackcslot3.osadl.org (updated Mon Apr 06, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
147950770irq/31-eth0-tx-41ktimersoftd/009:45:280
81750rcu_preempt1301-21rm09:15:190
81740rcu_preempt25957-21munin-run08:45:080
89850730irq/17-ehci_hcd0-21swapper/107:23:321
81730rcu_preempt31863-21ntp_offset09:05:290
81730rcu_preempt0-21swapper/109:17:211
81730rcu_preempt0-21swapper/011:07:110
81710rcu_preempt0-21swapper/010:39:230
81710rcu_preempt0-21swapper/009:40:080
81710rcu_preempt0-21swapper/009:30:230
81700rcu_preempt29929-21diskmemload10:09:040
81700rcu_preempt0-21swapper/010:50:360
81690rcu_preempt6176-21diskstats10:25:230
81670rcu_preempt0-21swapper/012:09:580
81670rcu_preempt0-21swapper/009:22:460
81670rcu_preempt0-21swapper/008:24:160
89850650irq/17-ehci_hcd25924-21/usr/sbin/munin12:05:271
81650rcu_preempt584-21sh10:15:170
81640rcu_preempt3082-21timerandwakeup07:10:340
81640rcu_preempt2979-21ntp_states11:20:311
81640rcu_preempt0-21swapper/109:32:121
81640rcu_preempt0-21swapper/107:11:351
81640rcu_preempt0-21swapper/012:16:450
81640rcu_preempt0-21swapper/011:50:290
81640rcu_preempt0-21swapper/008:51:440
81630rcu_preempt30418-21ssh10:10:200
81630rcu_preempt0-21swapper/110:46:401
81630rcu_preempt0-21swapper/011:37:550
81630rcu_preempt0-21swapper/011:30:260
81620rcu_preempt28740-21cpuspeed_turbos08:55:210
81620rcu_preempt0-21swapper/012:35:210
81620rcu_preempt0-21swapper/008:00:240
81610rcu_preempt7974-21ssh10:28:481
81610rcu_preempt31963-21ssh12:16:341
81610rcu_preempt28477-21ssh11:07:541
81610rcu_preempt17192-21ssh11:48:571
81610rcu_preempt13886-21ssh09:37:201
81610rcu_preempt12418-21ssh12:41:041
81610rcu_preempt0-21swapper/112:39:171
81610rcu_preempt0-21swapper/112:15:021
81610rcu_preempt0-21swapper/111:16:321
81610rcu_preempt0-21swapper/109:10:221
81610rcu_preempt0-21swapper/108:07:171
81610rcu_preempt0-21swapper/107:50:211
89450600irq/17-ehci_hcd23435-21grep09:55:320
81600rcu_preempt8874-21ssh11:32:061
81600rcu_preempt5008-21ssh10:22:481
81600rcu_preempt29858-21ssh10:08:481
81600rcu_preempt26447-21ssh11:04:501
81600rcu_preempt16699-21ssh09:43:011
81600rcu_preempt15044-21ssh10:41:111
81600rcu_preempt11288-21ssh11:36:151
81600rcu_preempt10337-21cut07:40:290
81600rcu_preempt0-21swapper/111:14:401
81600rcu_preempt0-21swapper/110:39:211
81600rcu_preempt0-21swapper/110:34:591
81600rcu_preempt0-21swapper/110:00:321
81600rcu_preempt0-21swapper/109:45:571
81600rcu_preempt0-21swapper/108:15:201
81600rcu_preempt0-21swapper/107:35:271
81600rcu_preempt0-21swapper/010:31:030
81600rcu_preempt0-21swapper/010:22:150
81600rcu_preempt0-21swapper/007:25:290
81590rcu_preempt6409-21ssh11:27:281
81590rcu_preempt581-21ssh10:15:161
81590rcu_preempt4516-21if_can109:20:251
81590rcu_preempt22175-21ssh09:54:191
81590rcu_preempt20047-21ssh11:54:331
81590rcu_preempt17971-21ssh10:47:170
81590rcu_preempt17201-21ssh09:45:050
81590rcu_preempt0-21swapper/112:31:491
81590rcu_preempt0-21swapper/112:21:041
81590rcu_preempt0-21swapper/110:10:321
81590rcu_preempt0-21swapper/108:46:511
81590rcu_preempt0-21swapper/108:10:301
81590rcu_preempt0-21swapper/012:11:190
81590rcu_preempt0-21swapper/011:00:560
81590rcu_preempt0-21swapper/008:35:250
81580rcu_preempt7526-21ssh12:32:040
81580rcu_preempt24982-21ssh12:04:151
81580rcu_preempt22666-21ssh11:59:490
81580rcu_preempt20351-21ssh11:55:111
81580rcu_preempt14093-21ssh11:42:040
81580rcu_preempt0-21swapper/112:28:591
81580rcu_preempt0-21swapper/109:05:231
81580rcu_preempt0-21swapper/108:56:051
81580rcu_preempt0-21swapper/011:17:580
81580rcu_preempt0-21swapper/010:55:270
81580rcu_preempt0-21swapper/010:43:170
81580rcu_preempt0-21swapper/010:01:280
81580rcu_preempt0-21swapper/009:51:330
81580rcu_preempt0-21swapper/008:49:190
81580rcu_preempt0-21swapper/008:30:190
81570rcu_preempt8654-21ssh09:27:331
81570rcu_preempt8199-21cat07:30:340
81570rcu_preempt13977-21ssh11:41:351
81570rcu_preempt0-21swapper/110:56:181
81570rcu_preempt0-21swapper/109:56:191
81570rcu_preempt0-21swapper/108:50:081
81570rcu_preempt0-21swapper/011:25:260
81570rcu_preempt0-21swapper/011:20:380
81570rcu_preempt0-21swapper/011:14:120
81570rcu_preempt0-21swapper/008:10:340
81560rcu_preempt5216-21ssh12:27:590
81560rcu_preempt19685-21strings10:50:321
81560rcu_preempt0-21swapper/108:40:241
81560rcu_preempt0-21swapper/108:00:251
81560rcu_preempt0-21swapper/107:55:261
81560rcu_preempt0-21swapper/012:22:080
81560rcu_preempt0-21swapper/011:45:350
81560rcu_preempt0-21swapper/009:14:020
81560rcu_preempt0-21swapper/009:00:270
81560rcu_preempt0-21swapper/007:50:280
147950560irq/31-eth0-tx-41ktimersoftd/012:04:300
81550rcu_preempt0-21swapper/108:20:261
81550rcu_preempt0-21swapper/107:28:301
81550rcu_preempt0-21swapper/009:29:560
89850540irq/17-ehci_hcd945-21usb-storage08:35:211
81540rcu_preempt0-21swapper/107:45:211
81540rcu_preempt0-21swapper/012:43:360
81540rcu_preempt0-21swapper/008:25:210
81540rcu_preempt0-21swapper/008:05:260
81530rcu_preempt30596-21ntp_states09:00:311
81530rcu_preempt0-21swapper/108:30:591
81530rcu_preempt0-21swapper/007:55:250
81510rcu_preempt0-21swapper/108:25:171
81510rcu_preempt0-21swapper/008:18:190
81510rcu_preempt0-21swapper/007:45:290
3237995148cyclictest945-21usb-storage07:40:281
81500rcu_preempt0-21swapper/007:20:380
3237994844cyclictest945-21usb-storage07:15:191
323699452cyclictest0-21swapper/007:35:290
323699432cyclictest0-21swapper/007:17:550
147950370irq/31-eth0-tx-3179-21kworker/1:207:30:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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