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2026-06-07 - 14:56
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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 Jun 07, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811000rcu_preempt24799-21diskmemload12:10:021
81720rcu_preempt29007-21ssh11:18:360
81710rcu_preempt15031-21diskstats08:33:300
81710rcu_preempt11277-21sh11:45:040
81700rcu_preempt8231-21ssh11:39:011
81700rcu_preempt0-21swapper/109:28:411
81700rcu_preempt0-21swapper/012:27:490
81700rcu_preempt0-21swapper/011:23:440
146250700irq/28-eth0-rx-945-21usb-storage11:02:391
81690rcu_preempt0-21swapper/009:54:370
81690rcu_preempt0-21swapper/009:37:160
81680rcu_preempt28650-21apt-get12:18:291
81680rcu_preempt25658-21/usr/sbin/munin07:08:320
81680rcu_preempt10852-21munin-run08:18:170
81680rcu_preempt0-21swapper/109:50:241
81680rcu_preempt0-21swapper/109:34:131
81680rcu_preempt0-21swapper/109:16:031
81680rcu_preempt0-21swapper/011:09:290
89950670irq/17-ehci_hcd945-21usb-storage08:31:320
81670rcu_preempt0-21swapper/111:18:441
81670rcu_preempt0-21swapper/110:51:141
81670rcu_preempt0-21swapper/108:53:421
81670rcu_preempt0-21swapper/010:01:380
81670rcu_preempt0-21swapper/009:15:220
89950660irq/17-ehci_hcd945-21usb-storage11:14:200
81660rcu_preempt20543-21apt-esm-hook12:03:301
81660rcu_preempt0-21swapper/012:09:190
81650rcu_preempt24799-21diskmemload09:40:231
81650rcu_preempt0-21swapper/109:43:341
81640rcu_preempt0-21swapper/110:42:291
81640rcu_preempt0-21swapper/010:43:110
81630rcu_preempt32528-21ssh12:23:561
81630rcu_preempt12122-21munin-run08:23:160
81630rcu_preempt0-21swapper/108:45:231
81630rcu_preempt0-21swapper/011:55:460
81630rcu_preempt0-21swapper/008:58:350
81630rcu_preempt0-21swapper/008:45:520
81630rcu_preempt0-21swapper/008:38:270
81620rcu_preempt24799-21diskmemload12:15:050
81620rcu_preempt23623-21if_wlan010:08:361
81620rcu_preempt22310-21ssh11:06:051
81620rcu_preempt0-21swapper/111:55:211
81620rcu_preempt0-21swapper/111:51:531
81620rcu_preempt0-21swapper/111:13:371
81620rcu_preempt0-21swapper/110:55:051
81620rcu_preempt0-21swapper/108:31:191
81620rcu_preempt0-21swapper/011:58:310
81620rcu_preempt0-21swapper/009:08:390
81620rcu_preempt0-21swapper/007:18:290
81610rcu_preempt30515-1kworker/0:0H12:38:000
81610rcu_preempt22297-21ssh10:06:221
81610rcu_preempt0-21swapper/110:21:381
81610rcu_preempt0-21swapper/110:01:371
81610rcu_preempt0-21swapper/011:48:350
81610rcu_preempt0-21swapper/011:39:180
81610rcu_preempt0-21swapper/010:06:520
89950600irq/17-ehci_hcd945-21usb-storage08:43:111
81600rcu_preempt8805-21ssh12:41:111
81600rcu_preempt683-21ssh10:25:561
81600rcu_preempt445-21ssh09:27:001
81600rcu_preempt25932-21ssh12:13:211
81600rcu_preempt24799-21diskmemload12:07:050
81600rcu_preempt22236-21sendmail-msp09:03:171
81600rcu_preempt14978-21ssh09:53:301
81600rcu_preempt0-21swapper/108:48:301
81600rcu_preempt0-21swapper/107:48:341
81600rcu_preempt0-21swapper/107:12:201
81600rcu_preempt0-21swapper/007:38:370
146450600irq/29-eth0-rx-0-21swapper/112:00:381
81590rcu_preempt5837-21ssh10:35:251
81590rcu_preempt30291-21ssh12:20:270
81590rcu_preempt29580-21ssh09:20:131
81590rcu_preempt1573-21lldpd10:37:180
81590rcu_preempt0-21swapper/112:30:411
81590rcu_preempt0-21swapper/111:33:371
81590rcu_preempt0-21swapper/111:28:411
81590rcu_preempt0-21swapper/111:23:591
81590rcu_preempt0-21swapper/111:10:491
81590rcu_preempt0-21swapper/110:43:411
81590rcu_preempt0-21swapper/110:14:101
81590rcu_preempt0-21swapper/107:53:411
81590rcu_preempt0-21swapper/010:56:430
81590rcu_preempt0-21swapper/010:12:240
81590rcu_preempt0-21swapper/009:23:370
81580rcu_preempt6069-21ssh12:35:531
81580rcu_preempt21946-21ssh11:04:500
81580rcu_preempt0-21swapper/110:28:301
81580rcu_preempt0-21swapper/109:10:531
81580rcu_preempt0-21swapper/108:27:051
81580rcu_preempt0-21swapper/107:46:281
81580rcu_preempt0-21swapper/107:31:521
81580rcu_preempt0-21swapper/010:18:300
81580rcu_preempt0-21swapper/009:52:140
81580rcu_preempt0-21swapper/009:20:120
81580rcu_preempt0-21swapper/008:48:350
81580rcu_preempt0-21swapper/007:33:350
81570rcu_preempt9710-21ssh11:43:241
81570rcu_preempt7066-21munin-run08:03:170
81570rcu_preempt3573-21ssh12:31:200
81570rcu_preempt24799-21diskmemload11:33:160
81570rcu_preempt0-21swapper/109:05:591
81570rcu_preempt0-21swapper/108:35:331
81570rcu_preempt0-21swapper/108:13:421
81570rcu_preempt0-21swapper/108:01:511
81570rcu_preempt0-21swapper/107:40:311
81570rcu_preempt0-21swapper/107:35:481
81570rcu_preempt0-21swapper/011:00:420
81570rcu_preempt0-21swapper/010:45:580
81570rcu_preempt0-21swapper/010:29:020
81570rcu_preempt0-21swapper/010:24:440
81570rcu_preempt0-21swapper/009:42:070
81560rcu_preempt8339-21/usr/sbin/munin08:08:170
81560rcu_preempt7481-21fw_forwarded_lo08:03:331
81560rcu_preempt6511-21ssh11:37:250
81560rcu_preempt0-21swapper/107:24:091
81560rcu_preempt0-21swapper/107:21:041
81560rcu_preempt0-21swapper/012:38:440
81560rcu_preempt0-21swapper/010:49:360
81560rcu_preempt0-21swapper/010:14:530
81550rcu_preempt24799-21diskmemload09:44:110
81550rcu_preempt0-21swapper/108:18:291
81550rcu_preempt0-21swapper/107:13:431
81550rcu_preempt0-21swapper/007:44:450
81540rcu_preempt0-21swapper/009:32:350
81540rcu_preempt0-21swapper/007:29:570
81520rcu_preempt0-21swapper/008:56:560
81520rcu_preempt0-21swapper/008:23:370
81520rcu_preempt0-21swapper/008:08:490
81520rcu_preempt0-21swapper/007:53:340
81510rcu_preempt29752-21fw_conntrack07:23:320
81470rcu_preempt0-21swapper/007:15:370
81420rcu_preempt8717-21df_inode08:08:321
146550410irq/30-eth0-tx-22680-21awk09:03:340
81400rcu_preempt3672-21diskstats07:48:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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