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2026-05-13 - 00:20
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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 Tue May 12, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811050rcu_preempt19-21ksoftirqd/112:04:001
81820rcu_preempt20168-21idleruntime-cro11:11:051
81800rcu_preempt0-21swapper/111:56:061
146650780irq/31-eth0-tx-41ktimersoftd/011:48:580
81770rcu_preempt0-21swapper/012:14:490
81750rcu_preempt18690-21diskmemload10:59:030
89950720irq/17-ehci_hcd20433-21mailstats07:06:301
81720rcu_preempt19-21ksoftirqd/112:35:191
81710rcu_preempt28206-21ssh11:25:230
81710rcu_preempt0-21swapper/012:21:260
81710rcu_preempt0-21swapper/009:47:530
81710rcu_preempt0-21swapper/007:31:260
89550700irq/17-ehci_hcd20834-21/usr/sbin/munin07:11:250
81700rcu_preempt0-21swapper/011:31:310
81700rcu_preempt0-21swapper/010:47:150
81700rcu_preempt0-21swapper/009:28:420
81690rcu_preempt5973-21sh11:43:120
81690rcu_preempt0-21swapper/012:19:280
81690rcu_preempt0-21swapper/012:19:280
81690rcu_preempt0-21swapper/011:12:390
89550680irq/17-ehci_hcd111rcuc/012:08:440
81680rcu_preempt12867-21df_inode11:56:230
81680rcu_preempt0-21swapper/012:31:230
81670rcu_preempt29948-21fw_conntrack07:46:220
81670rcu_preempt28222-21ssh10:26:180
146550660irq/30-eth0-tx-30276-21ssh09:31:140
81650rcu_preempt0-21swapper/112:27:461
81640rcu_preempt27339-21ssh10:23:421
81640rcu_preempt0-21swapper/011:51:240
81640rcu_preempt0-21swapper/011:16:300
81640rcu_preempt0-21swapper/010:32:130
81640rcu_preempt0-21swapper/008:26:410
81630rcu_preempt17199-21latency_hist10:06:060
81630rcu_preempt0-21swapper/107:26:571
81630rcu_preempt0-21swapper/012:36:260
81630rcu_preempt0-21swapper/008:31:210
146550630irq/30-eth0-tx-19554-21/usr/sbin/munin07:06:330
89950620irq/17-ehci_hcd945-21usb-storage12:12:151
81620rcu_preempt28908-21ssh12:26:160
81620rcu_preempt1062-21ssh11:34:521
81620rcu_preempt0-21swapper/011:29:110
81620rcu_preempt0-21swapper/011:05:420
81610rcu_preempt2192-21snmpd10:05:531
81610rcu_preempt0-21swapper/111:00:171
81610rcu_preempt0-21swapper/110:31:251
81610rcu_preempt0-21swapper/110:16:281
81610rcu_preempt0-21swapper/109:21:291
81610rcu_preempt0-21swapper/108:36:261
81610rcu_preempt0-21swapper/108:21:301
81610rcu_preempt0-21swapper/107:46:281
81610rcu_preempt0-21swapper/009:56:360
81600rcu_preempt6569-21ssh11:45:171
81600rcu_preempt5263-21ssh10:41:431
81600rcu_preempt23093-21ssh09:16:471
81600rcu_preempt22269-21if_err_wlan009:16:240
81600rcu_preempt10951-21ssh10:52:311
81600rcu_preempt0-21swapper/111:36:361
81600rcu_preempt0-21swapper/011:10:390
81590rcu_preempt27827-21ssh11:24:121
81590rcu_preempt20850-21egrep07:11:191
81590rcu_preempt0-21swapper/111:03:091
81590rcu_preempt0-21swapper/109:45:441
81590rcu_preempt0-21swapper/109:38:261
81590rcu_preempt0-21swapper/109:33:491
81590rcu_preempt0-21swapper/109:01:321
81590rcu_preempt0-21swapper/108:31:241
81590rcu_preempt0-21swapper/107:36:241
81590rcu_preempt0-21swapper/010:45:340
81590rcu_preempt0-21swapper/009:36:200
81590rcu_preempt0-21swapper/007:26:280
81580rcu_preempt9242-21ssh10:51:021
81580rcu_preempt30525-21ssh11:29:011
81580rcu_preempt29508-21ssh10:27:031
81580rcu_preempt24857-21ssh12:17:271
81580rcu_preempt24857-21ssh12:17:271
81580rcu_preempt20337-21ssh12:10:291
81580rcu_preempt11836-21ssh11:54:191
81580rcu_preempt0-21swapper/112:40:421
81580rcu_preempt0-21swapper/111:50:381
81580rcu_preempt0-21swapper/111:17:021
81580rcu_preempt0-21swapper/111:13:051
81580rcu_preempt0-21swapper/110:37:511
81580rcu_preempt0-21swapper/109:58:201
81580rcu_preempt0-21swapper/109:51:221
81580rcu_preempt0-21swapper/109:48:211
81580rcu_preempt0-21swapper/109:12:261
81580rcu_preempt0-21swapper/010:20:040
81570rcu_preempt28939-21ssh09:27:421
81570rcu_preempt21498-21ssh10:12:331
81570rcu_preempt20359-21fw_conntrack10:11:230
81570rcu_preempt19697-21ssh10:10:301
81570rcu_preempt0-21swapper/112:24:311
81570rcu_preempt0-21swapper/108:49:501
81570rcu_preempt0-21swapper/108:44:521
81570rcu_preempt0-21swapper/108:26:291
81570rcu_preempt0-21swapper/011:40:420
81570rcu_preempt0-21swapper/009:51:320
81560rcu_preempt27424-21ssh10:24:010
81560rcu_preempt0-21swapper/108:01:241
81560rcu_preempt0-21swapper/107:16:251
81560rcu_preempt0-21swapper/012:04:390
81560rcu_preempt0-21swapper/009:25:330
81560rcu_preempt0-21swapper/008:51:270
81550rcu_preempt28424-21apt-get07:41:171
81550rcu_preempt20335-21ssh09:12:200
81550rcu_preempt12399-21grep08:46:050
81550rcu_preempt0-21swapper/107:57:351
81550rcu_preempt0-21swapper/010:06:450
81550rcu_preempt0-21swapper/009:41:420
81550rcu_preempt0-21swapper/008:21:200
81550rcu_preempt0-21swapper/008:16:330
89950540irq/17-ehci_hcd945-21usb-storage08:16:201
81540rcu_preempt2684-21ssh10:37:090
81540rcu_preempt26817-21python07:31:321
81540rcu_preempt18291-21ntp_states09:06:281
81540rcu_preempt0-21swapper/108:57:141
81540rcu_preempt0-21swapper/108:10:481
81540rcu_preempt0-21swapper/010:53:170
81540rcu_preempt0-21swapper/008:57:250
81530rcu_preempt24506-21munin-run07:26:050
81530rcu_preempt0-21swapper/008:47:450
81520rcu_preempt1546-21irqstats08:01:250
81520rcu_preempt0-21swapper/008:11:140
81520rcu_preempt0-21swapper/007:54:570
20713995249cyclictest945-21usb-storage07:25:101
20712995248cyclictest945-21usb-storage07:43:570
81510rcu_preempt0-21swapper/008:39:230
20713995148cyclictest945-21usb-storage08:52:521
20713995148cyclictest945-21usb-storage07:51:581
81500rcu_preempt0-21swapper/007:59:290
20713994946cyclictest945-21usb-storage08:15:501
81480rcu_preempt0-21swapper/007:16:090
81410rcu_preempt17706-21df09:06:180
81390rcu_preempt3-21ksoftirqd/008:10:540
81390rcu_preempt27491-21awk07:36:230
89950350irq/17-ehci_hcd0-21swapper/009:04:160
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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