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2026-05-14 - 20:29
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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 376 highest latencies:
System rackcslot3.osadl.org (updated Thu May 14, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950810irq/17-ehci_hcd3725-1kworker/0:1H11:12:270
146650730irq/31-eth0-tx-3-21ksoftirqd/009:33:340
81720rcu_preempt5071-21sh10:07:240
81720rcu_preempt0-21swapper/011:21:290
81720rcu_preempt0-21swapper/007:16:330
81710rcu_preempt0-21swapper/012:01:360
81710rcu_preempt0-21swapper/009:39:420
81700rcu_preempt0-21swapper/012:07:530
81700rcu_preempt0-21swapper/011:56:300
146650690irq/31-eth0-tx-3986-1kworker/0:2H12:12:290
146650690irq/31-eth0-tx-3986-1kworker/0:2H12:12:290
81680rcu_preempt2068-21ssh10:01:431
81670rcu_preempt0-21swapper/110:29:131
81670rcu_preempt0-21swapper/011:16:200
81670rcu_preempt0-21swapper/010:22:370
81660rcu_preempt0-21swapper/012:22:420
81660rcu_preempt0-21swapper/007:06:150
146450660irq/29-eth0-rx-0-21swapper/012:41:030
81650rcu_preempt15749-21ssh12:26:260
81650rcu_preempt0-21swapper/111:25:501
81650rcu_preempt0-21swapper/110:47:571
81650rcu_preempt0-21swapper/107:06:411
81650rcu_preempt0-21swapper/012:35:390
81650rcu_preempt0-21swapper/009:13:010
7058996544cyclictest181ktimersoftd/109:21:261
81640rcu_preempt0-21swapper/011:02:200
81640rcu_preempt0-21swapper/010:51:390
146650640irq/31-eth0-tx-22996-21apt-get10:41:270
146550640irq/30-eth0-tx-0-21swapper/011:32:110
81630rcu_preempt6944-21ssh09:13:141
81630rcu_preempt31951-21grep08:46:370
81630rcu_preempt14583-21ssh09:26:390
81630rcu_preempt10696-21/usr/sbin/munin12:16:340
81630rcu_preempt0-21swapper/008:41:290
81620rcu_preempt7225-21ssh11:11:291
81620rcu_preempt30647-21sh09:56:290
81620rcu_preempt24318-21ssh09:44:411
81620rcu_preempt2192-21snmpd08:21:330
81620rcu_preempt19886-21ssh10:35:451
81620rcu_preempt17599-21ssh12:28:551
81620rcu_preempt0-21swapper/112:36:411
81620rcu_preempt0-21swapper/112:24:221
81620rcu_preempt0-21swapper/111:46:011
81620rcu_preempt0-21swapper/111:35:201
81620rcu_preempt0-21swapper/110:22:051
81620rcu_preempt0-21swapper/110:07:241
81620rcu_preempt0-21swapper/109:54:371
81620rcu_preempt0-21swapper/108:21:381
81620rcu_preempt0-21swapper/107:16:281
81620rcu_preempt0-21swapper/011:06:360
81620rcu_preempt0-21swapper/010:31:510
81620rcu_preempt0-21swapper/007:51:320
146550620irq/30-eth0-tx-20771-21cpuspeed_turbos11:36:291
81610rcu_preempt2834-21ssh12:01:401
81610rcu_preempt19-21ksoftirqd/109:56:361
81610rcu_preempt15497-21ssh09:28:181
81610rcu_preempt0-21swapper/111:52:011
81610rcu_preempt0-21swapper/110:20:241
81610rcu_preempt0-21swapper/107:46:321
81610rcu_preempt0-21swapper/010:36:300
146650610irq/31-eth0-tx-945-21usb-storage10:17:500
89950600irq/17-ehci_hcd945-21usb-storage07:49:000
81600rcu_preempt9646-21ssh12:15:031
81600rcu_preempt9646-21ssh12:15:031
81600rcu_preempt3292-21ssh11:03:561
81600rcu_preempt20991-21ssh09:37:181
81600rcu_preempt18127-21ssh09:32:211
81600rcu_preempt0-21swapper/112:20:531
81600rcu_preempt0-21swapper/110:56:571
81600rcu_preempt0-21swapper/010:47:560
81600rcu_preempt0-21swapper/009:23:060
81600rcu_preempt0-21swapper/007:36:270
81600rcu_preempt0-21swapper/007:11:390
81590rcu_preempt727-21ssh11:58:051
81590rcu_preempt4471-21ssh11:06:301
81590rcu_preempt28593-21ssh11:50:580
81590rcu_preempt25784-21ssh09:46:371
81590rcu_preempt0-21swapper/111:46:511
81590rcu_preempt0-21swapper/111:30:581
81590rcu_preempt0-21swapper/111:16:401
81590rcu_preempt0-21swapper/110:51:291
81590rcu_preempt0-21swapper/110:42:551
81590rcu_preempt0-21swapper/108:06:301
81590rcu_preempt0-21swapper/010:28:080
89550580irq/17-ehci_hcd29201-21uname08:36:350
81580rcu_preempt0-21swapper/110:36:421
81580rcu_preempt0-21swapper/110:15:241
81580rcu_preempt0-21swapper/109:19:321
81580rcu_preempt0-21swapper/109:03:171
81580rcu_preempt0-21swapper/108:16:311
81580rcu_preempt0-21swapper/108:16:311
81580rcu_preempt0-21swapper/108:01:441
81580rcu_preempt0-21swapper/107:41:361
81580rcu_preempt0-21swapper/011:37:500
81580rcu_preempt0-21swapper/009:51:480
81580rcu_preempt0-21swapper/008:01:300
81580rcu_preempt0-21swapper/007:26:370
7058995842cyclictest945-21usb-storage07:56:391
81570rcu_preempt8781-21ssh10:15:570
81570rcu_preempt5935-21rm12:06:481
81570rcu_preempt565-21ssh10:59:030
81570rcu_preempt29961-21timerandwakeup11:51:410
81570rcu_preempt26651-21ssh09:48:050
81570rcu_preempt24304-21ssh09:44:390
81570rcu_preempt20925-21ssh12:36:151
81570rcu_preempt13069-21ps07:31:370
81570rcu_preempt0-21swapper/108:54:081
81560rcu_preempt0-21swapper/107:30:491
81560rcu_preempt0-21swapper/011:45:240
81560rcu_preempt0-21swapper/011:26:340
81550rcu_preempt0-21swapper/108:40:521
81550rcu_preempt0-21swapper/107:38:441
81550rcu_preempt0-21swapper/107:31:191
81550rcu_preempt0-21swapper/107:11:261
81550rcu_preempt0-21swapper/010:01:420
81550rcu_preempt0-21swapper/009:20:300
81550rcu_preempt0-21swapper/008:56:420
81550rcu_preempt0-21swapper/007:56:380
81540rcu_preempt10050-21fw_conntrack07:21:301
81540rcu_preempt0-21swapper/109:10:401
81540rcu_preempt0-21swapper/008:31:360
81540rcu_preempt0-21swapper/008:19:160
81540rcu_preempt0-21swapper/008:19:160
89950530irq/17-ehci_hcd945-21usb-storage08:46:391
81530rcu_preempt0-21swapper/008:06:580
7058995349cyclictest945-21usb-storage07:51:381
81520rcu_preempt0-21swapper/008:51:480
81520rcu_preempt0-21swapper/008:26:380
81520rcu_preempt0-21swapper/007:46:030
81520rcu_preempt0-21swapper/007:25:070
81510rcu_preempt0-21swapper/009:01:380
7058995148cyclictest945-21usb-storage08:35:051
7058995045cyclictest945-21usb-storage08:56:371
7058994946cyclictest945-21usb-storage08:12:151
81480rcu_preempt0-21swapper/009:06:590
7058994643cyclictest945-21usb-storage08:41:361
7058994542cyclictest945-21usb-storage08:26:331
89950360irq/17-ehci_hcd0-21swapper/008:11:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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