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2026-06-01 - 07:59
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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 Mon Jun 01, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt0-21swapper/022:51:490
81760rcu_preempt17431-21/usr/sbin/munin19:13:030
89950750irq/17-ehci_hcd0-21swapper/021:31:450
81720rcu_preempt0-21swapper/021:37:540
81710rcu_preempt0-21swapper/022:15:580
89950700irq/17-ehci_hcd945-21usb-storage00:07:101
81700rcu_preempt9506-21sh22:02:180
81700rcu_preempt0-21swapper/020:52:440
81700rcu_preempt0-21swapper/020:08:120
89950690irq/17-ehci_hcd945-21usb-storage21:55:200
81690rcu_preempt0-21swapper/022:44:510
81690rcu_preempt0-21swapper/000:32:180
81680rcu_preempt8348-21sh23:58:521
81680rcu_preempt0-21swapper/123:43:101
81680rcu_preempt0-21swapper/122:07:581
81680rcu_preempt0-21swapper/119:28:001
81680rcu_preempt0-21swapper/023:10:520
81680rcu_preempt0-21swapper/023:05:510
81670rcu_preempt0-21swapper/119:48:071
81660rcu_preempt27816-21switchtime19:53:101
81660rcu_preempt21409-21sh00:27:121
81660rcu_preempt15996-21processes23:13:071
81660rcu_preempt0-21swapper/020:38:190
89550650irq/17-ehci_hcd4441-21/usr/sbin/munin20:28:110
81650rcu_preempt20512-21ssh23:22:571
81650rcu_preempt10039-21modprobe00:03:070
81650rcu_preempt0-21swapper/121:47:181
81650rcu_preempt0-21swapper/023:55:120
81650rcu_preempt0-21swapper/023:25:520
81640rcu_preempt0-21swapper/123:41:081
81640rcu_preempt0-21swapper/019:41:360
89950630irq/17-ehci_hcd0-21swapper/122:04:551
81630rcu_preempt28315-21mailstats00:38:091
81630rcu_preempt28315-21mailstats00:38:091
81630rcu_preempt19-21ksoftirqd/123:57:281
81630rcu_preempt11577-21cut20:58:050
81630rcu_preempt0-21swapper/123:21:111
81630rcu_preempt0-21swapper/122:32:581
81630rcu_preempt0-21swapper/122:13:101
81630rcu_preempt0-21swapper/120:47:581
81630rcu_preempt0-21swapper/023:15:210
81630rcu_preempt0-21swapper/019:23:100
81620rcu_preempt9379-21ssh22:01:511
81620rcu_preempt28337-1kworker/0:1H23:18:570
81620rcu_preempt26749-21munin-run19:52:430
81620rcu_preempt16721-21ssh21:15:271
81620rcu_preempt0-21swapper/123:31:051
81620rcu_preempt0-21swapper/122:22:571
81620rcu_preempt0-21swapper/120:58:001
81610rcu_preempt6679-21ssh22:56:591
81610rcu_preempt2744-21ssh23:48:211
81610rcu_preempt24949-21ssh00:33:001
81610rcu_preempt22574-21ssh00:28:071
81610rcu_preempt20706-21ssh22:22:560
81610rcu_preempt16826-21ssh00:18:060
81610rcu_preempt15439-21ssh00:15:430
81610rcu_preempt0-21swapper/123:12:281
81610rcu_preempt0-21swapper/119:23:021
81610rcu_preempt0-21swapper/119:07:461
81600rcu_preempt27999-21turbostat.cron19:57:430
81600rcu_preempt27401-21ssh23:34:301
81600rcu_preempt24578-21ssh22:28:231
81600rcu_preempt0-21swapper/122:51:051
81600rcu_preempt0-21swapper/122:46:271
81600rcu_preempt0-21swapper/121:38:541
81600rcu_preempt0-21swapper/121:27:441
81600rcu_preempt0-21swapper/121:21:531
81600rcu_preempt0-21swapper/121:04:431
81600rcu_preempt0-21swapper/021:26:250
81600rcu_preempt0-21swapper/021:12:440
81600rcu_preempt0-21swapper/019:08:210
89150590irq/17-ehci_hcd7965-21fgrep22:58:080
81590rcu_preempt6667-21ssh21:56:241
81590rcu_preempt3-21ksoftirqd/021:48:040
81590rcu_preempt25299-21ssh22:31:030
81590rcu_preempt11131-21ssh23:04:091
81590rcu_preempt0-21swapper/121:24:581
81590rcu_preempt0-21swapper/119:58:031
81590rcu_preempt0-21swapper/119:33:021
81590rcu_preempt0-21swapper/119:13:051
81590rcu_preempt0-21swapper/100:20:111
81590rcu_preempt0-21swapper/100:16:411
81590rcu_preempt0-21swapper/100:10:451
81590rcu_preempt0-21swapper/023:59:050
81590rcu_preempt0-21swapper/023:33:050
81590rcu_preempt0-21swapper/022:08:080
81580rcu_preempt30948-21ssh23:42:140
81580rcu_preempt26836-21ntp_states21:33:071
81580rcu_preempt19847-21ssh22:20:471
81580rcu_preempt16541-21ssh21:14:570
81580rcu_preempt0-21swapper/122:59:241
81580rcu_preempt0-21swapper/122:38:201
81580rcu_preempt0-21swapper/121:08:091
81580rcu_preempt0-21swapper/120:43:031
81580rcu_preempt0-21swapper/119:18:051
81580rcu_preempt0-21swapper/022:57:160
81580rcu_preempt0-21swapper/022:07:170
81580rcu_preempt0-21swapper/021:43:030
81580rcu_preempt0-21swapper/020:03:040
81580rcu_preempt0-21swapper/000:33:040
81570rcu_preempt3-21ksoftirqd/000:22:580
81570rcu_preempt14581-21diskmemload22:33:170
81570rcu_preempt0-21swapper/120:38:111
81570rcu_preempt0-21swapper/120:13:221
81570rcu_preempt0-21swapper/120:08:021
81570rcu_preempt0-21swapper/120:04:181
81570rcu_preempt0-21swapper/119:38:521
81570rcu_preempt0-21swapper/023:27:590
81570rcu_preempt0-21swapper/022:19:280
81560rcu_preempt2811-21ssh23:48:360
81560rcu_preempt0-21swapper/121:49:451
81560rcu_preempt0-21swapper/120:28:091
81560rcu_preempt0-21swapper/120:21:351
81560rcu_preempt0-21swapper/023:43:540
81560rcu_preempt0-21swapper/021:21:340
81560rcu_preempt0-21swapper/019:32:570
81560rcu_preempt0-21swapper/000:38:040
81560rcu_preempt0-21swapper/000:38:040
81560rcu_preempt0-21swapper/000:09:290
81550rcu_preempt0-21swapper/022:38:460
81550rcu_preempt0-21swapper/021:35:400
81550rcu_preempt0-21swapper/020:47:580
81540rcu_preempt2357-21fw_conntrack20:23:021
81540rcu_preempt0-21swapper/120:56:311
81530rcu_preempt0-21swapper/021:03:470
81530rcu_preempt0-21swapper/020:33:320
81530rcu_preempt0-21swapper/019:18:360
81520rcu_preempt24616-21diskstats19:42:581
81520rcu_preempt0-21swapper/020:44:160
81520rcu_preempt0-21swapper/020:17:280
81520rcu_preempt0-21swapper/019:59:270
16601995047cyclictest945-21usb-storage20:37:381
81490rcu_preempt2983-21mailstats20:23:100
81490rcu_preempt0-21swapper/019:46:170
81480rcu_preempt20772-21diskstats19:28:000
81470rcu_preempt0-21swapper/020:22:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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