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2026-05-11 - 18:59
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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 highest latencies:
System rackcslot3.osadl.org (updated Mon May 11, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81750rcu_preempt22769-21diskstats12:06:160
81750rcu_preempt0-21swapper/110:21:151
81720rcu_preempt32686-21ssh12:22:510
81720rcu_preempt0-21swapper/010:31:170
81720rcu_preempt0-21swapper/009:36:210
146650720irq/31-eth0-tx-181ktimersoftd/110:59:071
81710rcu_preempt9833-21ssh11:42:280
81710rcu_preempt5240-1kworker/0:0H11:06:580
81710rcu_preempt0-21swapper/011:46:140
81710rcu_preempt0-21swapper/011:26:160
81710rcu_preempt0-21swapper/011:02:030
81710rcu_preempt0-21swapper/010:03:160
81710rcu_preempt0-21swapper/010:03:160
81710rcu_preempt0-21swapper/009:55:570
81710rcu_preempt0-21swapper/009:01:230
81700rcu_preempt0-21swapper/107:06:261
81700rcu_preempt0-21swapper/010:11:350
81700rcu_preempt0-21swapper/007:31:180
81690rcu_preempt26330-21ssh09:21:251
81690rcu_preempt20234-21apt-get07:06:120
81690rcu_preempt0-21swapper/112:04:201
81690rcu_preempt0-21swapper/009:14:510
81680rcu_preempt0-21swapper/007:16:150
146550680irq/30-eth0-tx-0-21swapper/012:11:430
81670rcu_preempt0-21swapper/009:06:080
81650rcu_preempt8618-21ssh09:47:160
81650rcu_preempt534-21latency_hist10:31:010
81650rcu_preempt0-21swapper/008:12:320
89950640irq/17-ehci_hcd0-21swapper/111:52:111
81640rcu_preempt0-21swapper/108:16:121
81640rcu_preempt0-21swapper/011:23:360
81630rcu_preempt19-21ksoftirqd/110:07:341
81630rcu_preempt19-21ksoftirqd/110:07:341
81630rcu_preempt0-21swapper/111:24:141
81630rcu_preempt0-21swapper/008:46:110
81620rcu_preempt5867-21ssh12:32:201
81620rcu_preempt21639-21rm12:03:560
81620rcu_preempt14910-21diskmemload10:55:430
81620rcu_preempt0-21swapper/111:34:211
81620rcu_preempt0-21swapper/111:09:411
81620rcu_preempt0-21swapper/110:40:171
81620rcu_preempt0-21swapper/009:35:260
81610rcu_preempt32429-21ssh10:29:221
81610rcu_preempt30974-21ssh09:31:041
81610rcu_preempt27241-21sendmail10:21:000
81610rcu_preempt25304-21latency_hist07:26:000
81610rcu_preempt19523-21ssh09:11:051
81610rcu_preempt0-21swapper/112:21:261
81610rcu_preempt0-21swapper/111:41:331
81610rcu_preempt0-21swapper/110:15:121
81610rcu_preempt0-21swapper/011:20:210
81610rcu_preempt0-21swapper/010:47:190
81600rcu_preempt9109-21ssh12:38:401
81600rcu_preempt8714-21ssh09:47:341
81600rcu_preempt26904-21ssh10:20:021
81600rcu_preempt25929-21ssh11:14:451
81600rcu_preempt19217-21ssh11:01:511
81600rcu_preempt15648-21munin-run10:01:000
81600rcu_preempt0-21swapper/112:11:391
81600rcu_preempt0-21swapper/111:46:171
81600rcu_preempt0-21swapper/111:28:071
81600rcu_preempt0-21swapper/110:45:351
81600rcu_preempt0-21swapper/109:39:351
81600rcu_preempt0-21swapper/107:16:441
81600rcu_preempt0-21swapper/012:31:150
81590rcu_preempt5660-21ssh09:42:090
81590rcu_preempt4224-21ssh09:41:011
81590rcu_preempt4157-21idleruntime-cro08:10:590
81590rcu_preempt3076-21sh12:27:320
81590rcu_preempt29430-21ssh09:26:531
81590rcu_preempt24758-21ssh12:09:541
81590rcu_preempt22359-21sendmail_mailst07:11:240
81590rcu_preempt18036-21ssh11:56:391
81590rcu_preempt0-21swapper/112:27:131
81590rcu_preempt0-21swapper/112:16:231
81590rcu_preempt0-21swapper/110:53:101
81590rcu_preempt0-21swapper/110:31:251
81590rcu_preempt0-21swapper/109:20:431
81590rcu_preempt0-21swapper/107:11:191
81590rcu_preempt0-21swapper/011:56:230
81590rcu_preempt0-21swapper/011:41:000
81590rcu_preempt0-21swapper/010:42:350
81590rcu_preempt0-21swapper/008:41:140
146650590irq/31-eth0-tx-15248-21ssh11:51:470
81580rcu_preempt9016-21ssh12:38:230
81580rcu_preempt17174-21ssh10:01:561
81580rcu_preempt17174-21ssh10:01:561
81580rcu_preempt13226-21ssh09:56:161
81580rcu_preempt0-21swapper/111:16:501
81580rcu_preempt0-21swapper/109:52:531
81580rcu_preempt0-21swapper/109:01:011
81580rcu_preempt0-21swapper/108:34:321
81580rcu_preempt0-21swapper/108:22:361
81580rcu_preempt0-21swapper/108:12:311
81580rcu_preempt0-21swapper/011:32:420
81580rcu_preempt0-21swapper/010:21:020
81580rcu_preempt0-21swapper/010:07:410
81580rcu_preempt0-21swapper/010:07:410
81570rcu_preempt9195-21sshd08:28:361
81570rcu_preempt0-21swapper/111:37:481
81570rcu_preempt0-21swapper/109:08:441
81570rcu_preempt0-21swapper/108:41:111
81570rcu_preempt0-21swapper/108:37:071
81570rcu_preempt0-21swapper/108:06:181
81570rcu_preempt0-21swapper/012:16:440
81570rcu_preempt0-21swapper/010:56:560
81570rcu_preempt0-21swapper/009:17:340
81570rcu_preempt0-21swapper/008:51:120
81560rcu_preempt0-21swapper/110:46:241
81560rcu_preempt0-21swapper/107:56:141
81560rcu_preempt0-21swapper/010:37:350
81550rcu_preempt0-21swapper/107:42:521
81550rcu_preempt0-21swapper/107:26:311
81550rcu_preempt0-21swapper/011:15:150
81550rcu_preempt0-21swapper/009:24:530
89950540irq/17-ehci_hcd41ktimersoftd/008:16:120
81540rcu_preempt30346-21ssh09:29:360
81540rcu_preempt0-21swapper/109:00:001
81540rcu_preempt0-21swapper/108:55:351
81540rcu_preempt0-21swapper/108:02:351
81540rcu_preempt0-21swapper/107:55:411
21386995447cyclictest945-21usb-storage07:49:411
81530rcu_preempt28174-21if_err_can007:36:160
81530rcu_preempt14119-21python08:46:261
81530rcu_preempt0-21swapper/107:36:261
81530rcu_preempt0-21swapper/009:00:520
81530rcu_preempt0-21swapper/008:36:160
81530rcu_preempt0-21swapper/008:27:350
81530rcu_preempt0-21swapper/007:54:520
81530rcu_preempt0-21swapper/007:45:480
81520rcu_preempt0-21swapper/008:32:460
81520rcu_preempt0-21swapper/008:03:400
81520rcu_preempt0-21swapper/007:56:420
81510rcu_preempt0-21swapper/007:47:380
21386995148cyclictest945-21usb-storage07:34:191
21386995148cyclictest945-21usb-storage07:21:251
146550480irq/30-eth0-tx-6885-21/usr/sbin/munin08:21:130
81420rcu_preempt24052-21/usr/sbin/munin07:21:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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