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2026-01-11 - 21:41
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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 Sun Jan 11, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt10392-21munin-run10:21:181
81770rcu_preempt0-21swapper/110:36:441
81760rcu_preempt16836-21if_can107:56:351
81750rcu_preempt0-21swapper/109:24:141
81700rcu_preempt0-21swapper/111:16:181
81690rcu_preempt22282-21tr10:41:391
81690rcu_preempt0-21swapper/007:11:400
81680rcu_preempt5987-21sh12:10:440
81680rcu_preempt3349-21ssh11:06:330
81680rcu_preempt19-21ksoftirqd/111:22:221
81680rcu_preempt13363-21cut10:26:331
81680rcu_preempt0-21swapper/107:06:331
81680rcu_preempt0-21swapper/009:11:420
81670rcu_preempt25921-21ssh09:51:070
81670rcu_preempt0-21swapper/010:52:460
81660rcu_preempt8960-21munin-run09:21:170
81660rcu_preempt25939-21ssh10:47:511
81660rcu_preempt1384-21open_inodes09:01:410
81660rcu_preempt0-21swapper/012:37:480
81660rcu_preempt0-21swapper/012:21:390
81660rcu_preempt0-21swapper/011:58:300
81660rcu_preempt0-21swapper/011:46:400
81660rcu_preempt0-21swapper/011:37:410
81660rcu_preempt0-21swapper/011:37:410
81660rcu_preempt0-21swapper/011:13:180
81660rcu_preempt0-21swapper/010:38:570
81660rcu_preempt0-21swapper/009:41:040
81660rcu_preempt0-21swapper/007:10:530
89850650irq/17-ehci_hcd945-21usb-storage08:38:441
81650rcu_preempt0-21swapper/011:25:410
81650rcu_preempt0-21swapper/010:33:080
81640rcu_preempt30326-21ssh09:57:380
81640rcu_preempt10830-21ssh10:21:310
81630rcu_preempt0-21swapper/011:41:430
81630rcu_preempt0-21swapper/009:28:010
81620rcu_preempt8251-21ssh12:14:230
81620rcu_preempt27765-21ssh11:51:190
81620rcu_preempt0-21swapper/012:20:170
81620rcu_preempt0-21swapper/012:05:140
81610rcu_preempt24837-21ssh10:46:360
81610rcu_preempt17438-21ssh09:36:140
81610rcu_preempt0-21swapper/011:29:310
81600rcu_preempt936-21ssh10:03:100
81600rcu_preempt936-21ssh10:03:100
81600rcu_preempt32329-21ssh11:01:020
81600rcu_preempt28382-21ssh09:55:110
81600rcu_preempt0-21swapper/010:15:000
81600rcu_preempt0-21swapper/010:11:080
81600rcu_preempt0-21swapper/008:46:360
89850590irq/17-ehci_hcd945-21usb-storage08:25:321
81590rcu_preempt15083-21ssh10:28:500
81590rcu_preempt0-21swapper/112:24:161
81590rcu_preempt0-21swapper/111:50:231
81590rcu_preempt0-21swapper/009:44:330
81580rcu_preempt9573-21strings07:26:390
81580rcu_preempt17650-21munin-run08:01:170
81580rcu_preempt0-21swapper/010:20:080
81580rcu_preempt0-21swapper/008:01:320
81580rcu_preempt0-21swapper/007:50:280
81570rcu_preempt9741-21ssh11:17:060
81570rcu_preempt21443-21munin-run08:16:170
81570rcu_preempt16806-21cpu11:31:300
81570rcu_preempt0-21swapper/012:35:340
81570rcu_preempt0-21swapper/012:27:250
81570rcu_preempt0-21swapper/011:03:050
81570rcu_preempt0-21swapper/009:22:070
89850560irq/17-ehci_hcd945-21usb-storage09:07:491
81560rcu_preempt28620-21ssh10:52:221
81560rcu_preempt1730-21ssh11:02:451
81560rcu_preempt15504-21diskstats07:51:320
81560rcu_preempt0-21swapper/112:02:531
81560rcu_preempt0-21swapper/111:41:551
81560rcu_preempt0-21swapper/008:38:120
81560rcu_preempt0-21swapper/008:35:260
81560rcu_preempt0-21swapper/008:29:390
81560rcu_preempt0-21swapper/007:40:440
81550rcu_preempt21820-21ssh11:40:441
81550rcu_preempt21820-21ssh11:40:441
81550rcu_preempt18151-21ssh11:32:311
81550rcu_preempt15641-21ssh11:28:261
81550rcu_preempt0-21swapper/112:27:311
81550rcu_preempt0-21swapper/112:06:411
81550rcu_preempt0-21swapper/110:59:551
81550rcu_preempt0-21swapper/110:33:591
81550rcu_preempt0-21swapper/110:16:131
81550rcu_preempt0-21swapper/110:01:251
81550rcu_preempt0-21swapper/110:01:251
81550rcu_preempt0-21swapper/109:38:491
81550rcu_preempt0-21swapper/109:31:381
81550rcu_preempt0-21swapper/109:21:051
81550rcu_preempt0-21swapper/109:12:111
81550rcu_preempt0-21swapper/008:19:220
81540rcu_preempt7311-21ssh11:13:041
81540rcu_preempt31759-21ssh11:57:011
81540rcu_preempt28880-21ssh09:56:271
81540rcu_preempt28550-21memory08:41:370
81540rcu_preempt22411-21ssh09:44:141
81540rcu_preempt0-21swapper/111:08:301
81540rcu_preempt0-21swapper/110:25:501
81540rcu_preempt0-21swapper/110:08:091
81540rcu_preempt0-21swapper/007:26:160
81530rcu_preempt18679-21ssh12:35:531
81530rcu_preempt0-21swapper/112:20:011
81530rcu_preempt0-21swapper/112:13:501
81530rcu_preempt0-21swapper/111:52:531
81530rcu_preempt0-21swapper/109:26:541
81530rcu_preempt0-21swapper/109:05:001
81530rcu_preempt0-21swapper/108:46:441
81530rcu_preempt0-21swapper/108:30:351
81530rcu_preempt0-21swapper/108:10:591
81530rcu_preempt0-21swapper/008:21:350
81520rcu_preempt0-21swapper/112:38:241
81520rcu_preempt0-21swapper/108:04:051
81520rcu_preempt0-21swapper/107:22:071
4989995248cyclictest945-21usb-storage07:47:361
81510rcu_preempt21704-21sed10:41:310
81510rcu_preempt0-21swapper/109:53:491
81510rcu_preempt0-21swapper/108:56:361
81510rcu_preempt0-21swapper/108:52:051
81510rcu_preempt0-21swapper/107:51:501
81510rcu_preempt0-21swapper/107:38:321
81510rcu_preempt0-21swapper/107:28:021
81500rcu_preempt1923-21apt-get09:06:290
81500rcu_preempt0-21swapper/008:08:260
81480rcu_preempt0-21swapper/108:12:071
81470rcu_preempt7170-21processes07:16:440
81470rcu_preempt32025-21fw_conntrack08:56:330
81460rcu_preempt28248-21fw_forwarded_lo08:41:341
81460rcu_preempt19-21ksoftirqd/109:48:391
81450rcu_preempt0-21swapper/108:33:291
81440rcu_preempt10183-21apt-get07:31:291
89850410irq/17-ehci_hcd945-21usb-storage08:55:400
81410rcu_preempt22307-21ntp_states08:16:411
4989994138cyclictest945-21usb-storage07:15:311
89850390irq/17-ehci_hcd0-21swapper/007:41:460
89850360irq/17-ehci_hcd0-21swapper/007:32:170
81330rcu_preempt19-21ksoftirqd/107:19:571
4989993027cyclictest181ktimersoftd/107:41:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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