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2026-05-15 - 16:39
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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 Fri May 15, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89550780irq/17-ehci_hcd0-21swapper/010:18:080
81710rcu_preempt23660-21ssh12:05:200
81710rcu_preempt23660-21ssh12:05:200
81710rcu_preempt0-21swapper/010:46:440
81710rcu_preempt0-21swapper/009:49:160
81710rcu_preempt0-21swapper/007:06:210
81700rcu_preempt28154-21ssh12:12:180
81700rcu_preempt0-21swapper/107:06:441
81690rcu_preempt0-21swapper/011:11:280
81690rcu_preempt0-21swapper/007:46:470
81680rcu_preempt26461-21/usr/sbin/munin11:11:210
81670rcu_preempt28809-21ls07:16:380
81670rcu_preempt2795-21fw_forwarded_lo11:26:380
81670rcu_preempt0-21swapper/010:43:200
81670rcu_preempt0-21swapper/010:43:200
81670rcu_preempt0-21swapper/010:03:480
146650670irq/31-eth0-tx-4231-21/usr/sbin/munin09:31:410
81660rcu_preempt27673-21sh10:12:200
81660rcu_preempt12431-1kworker/0:1H09:51:400
146650660irq/31-eth0-tx-24967-21kworker/0:210:10:470
81650rcu_preempt17539-21sleep08:41:200
81650rcu_preempt15567-21date10:51:210
81640rcu_preempt0-21swapper/011:01:310
81630rcu_preempt0-21swapper/111:16:521
81630rcu_preempt0-21swapper/108:37:391
81630rcu_preempt0-21swapper/008:55:260
81630rcu_preempt0-21swapper/007:56:390
81620rcu_preempt32503-21diskstats12:21:381
81620rcu_preempt15018-21munin-run08:31:210
81620rcu_preempt13352-21apt-get11:46:331
81620rcu_preempt0-21swapper/112:13:081
81620rcu_preempt0-21swapper/111:04:311
81620rcu_preempt0-21swapper/011:51:470
81620rcu_preempt0-21swapper/011:32:590
81620rcu_preempt0-21swapper/008:46:440
89950610irq/17-ehci_hcd0-21swapper/107:16:421
81610rcu_preempt9144-21ssh11:37:301
81610rcu_preempt3784-21ssh11:27:141
81610rcu_preempt25332-21ssh11:07:481
81610rcu_preempt25222-21timerwakeupswit12:06:470
81610rcu_preempt20266-21ssh11:57:481
81610rcu_preempt17741-21ssh09:55:521
81610rcu_preempt11461-21ssh10:41:571
81610rcu_preempt11461-21ssh10:41:571
81610rcu_preempt0-21swapper/112:33:531
81610rcu_preempt0-21swapper/111:26:041
81610rcu_preempt0-21swapper/110:46:381
81610rcu_preempt0-21swapper/110:06:151
81610rcu_preempt0-21swapper/109:21:161
89550600irq/17-ehci_hcd25113-21diskmemload11:41:580
81600rcu_preempt5587-21ssh09:32:171
81600rcu_preempt21496-21ssh12:01:261
81600rcu_preempt21496-21ssh12:01:261
81600rcu_preempt12124-21ssh09:45:241
81600rcu_preempt0-21swapper/112:16:401
81600rcu_preempt0-21swapper/112:09:501
81600rcu_preempt0-21swapper/110:27:201
81600rcu_preempt0-21swapper/110:16:391
81600rcu_preempt0-21swapper/109:50:491
81600rcu_preempt0-21swapper/108:06:031
81600rcu_preempt0-21swapper/107:36:381
81600rcu_preempt0-21swapper/012:24:560
81600rcu_preempt0-21swapper/009:37:560
81600rcu_preempt0-21swapper/007:31:350
81590rcu_preempt9229-21ssh12:36:481
81590rcu_preempt7446-21ssh11:35:451
81590rcu_preempt655-21ssh09:24:391
81590rcu_preempt11034-21ssh09:42:010
81590rcu_preempt10007-21ssh10:41:141
81590rcu_preempt10007-21ssh10:41:141
81590rcu_preempt0-21swapper/111:51:481
81590rcu_preempt0-21swapper/111:44:281
81590rcu_preempt0-21swapper/110:31:441
81590rcu_preempt0-21swapper/110:12:381
81590rcu_preempt0-21swapper/110:08:181
81590rcu_preempt0-21swapper/109:56:431
81590rcu_preempt0-21swapper/109:31:131
81590rcu_preempt0-21swapper/108:53:501
81590rcu_preempt0-21swapper/011:49:270
27133995946cyclictest945-21usb-storage08:45:291
81580rcu_preempt31921-21df_abs10:21:340
81580rcu_preempt28453-21ssh11:14:041
81580rcu_preempt17642-21ssh10:54:211
81580rcu_preempt16277-21munin-run08:36:200
81580rcu_preempt1473-21ssh10:24:511
81580rcu_preempt10824-21ntpq08:11:411
81580rcu_preempt0-21swapper/112:29:141
81580rcu_preempt0-21swapper/109:11:451
81580rcu_preempt0-21swapper/108:31:341
81580rcu_preempt0-21swapper/107:46:411
81580rcu_preempt0-21swapper/012:26:410
81580rcu_preempt0-21swapper/009:13:260
81580rcu_preempt0-21swapper/009:06:470
81580rcu_preempt0-21swapper/008:41:400
81570rcu_preempt6789-21ssh12:32:320
81570rcu_preempt0-21swapper/111:00:121
81570rcu_preempt0-21swapper/109:06:451
81570rcu_preempt0-21swapper/108:50:441
81570rcu_preempt0-21swapper/108:07:071
81570rcu_preempt0-21swapper/107:34:431
81570rcu_preempt0-21swapper/011:56:230
81570rcu_preempt0-21swapper/011:24:220
81570rcu_preempt0-21swapper/010:58:100
81570rcu_preempt0-21swapper/010:39:520
81570rcu_preempt0-21swapper/010:39:520
81570rcu_preempt0-21swapper/009:20:490
27133995747cyclictest945-21usb-storage09:36:291
146550570irq/30-eth0-tx-3623-21ssh10:28:010
81560rcu_preempt0-21swapper/108:17:591
81560rcu_preempt0-21swapper/107:43:081
81560rcu_preempt0-21swapper/010:31:400
81560rcu_preempt0-21swapper/007:45:450
81560rcu_preempt0-21swapper/007:26:410
81550rcu_preempt9215-21ssh11:37:440
81550rcu_preempt30348-21grep12:16:440
81550rcu_preempt1020-21ssh09:25:540
81550rcu_preempt0-21swapper/109:03:031
81550rcu_preempt0-21swapper/108:24:381
81550rcu_preempt0-21swapper/107:21:471
81550rcu_preempt0-21swapper/012:36:370
81550rcu_preempt0-21swapper/009:59:370
81550rcu_preempt0-21swapper/009:28:070
81540rcu_preempt5026-21cpu07:51:330
81540rcu_preempt5026-21cpu07:51:330
81540rcu_preempt30965-21ssh11:18:220
81540rcu_preempt12487-21munin-run08:21:210
81540rcu_preempt0-21swapper/107:54:431
81540rcu_preempt0-21swapper/107:54:431
81540rcu_preempt0-21swapper/009:01:260
81530rcu_preempt22554-21sshd08:57:131
81530rcu_preempt0-21swapper/107:14:481
81520rcu_preempt2715-21apache208:01:430
81520rcu_preempt0-21swapper/107:26:421
81520rcu_preempt0-21swapper/008:12:420
81510rcu_preempt6494-21df_inode07:56:351
81500rcu_preempt0-21swapper/008:57:450
27133995047cyclictest945-21usb-storage08:26:411
81490rcu_preempt1432-21fw_forwarded_lo07:36:360
81490rcu_preempt0-21swapper/007:11:420
27132994424cyclictest8633-21kworker/0:008:21:330
146550430irq/30-eth0-tx-8633-21kworker/0:007:21:330
89950400irq/17-ehci_hcd945-21usb-storage08:09:510
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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