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2026-06-12 - 03:14
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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 Fri Jun 12, 2026 00:43:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89950860irq/17-ehci_hcd945-21usb-storage22:01:340
89950830irq/17-ehci_hcd24586-21ssh22:36:311
81780rcu_preempt0-21swapper/023:09:290
81780rcu_preempt0-21swapper/023:03:090
81770rcu_preempt14398-21df_inode21:18:561
81770rcu_preempt14398-21df_inode21:18:561
89550760irq/17-ehci_hcd11053-21diskmemload21:52:520
81760rcu_preempt2772-21if_eth120:38:571
81760rcu_preempt0-21swapper/022:06:230
89950720irq/17-ehci_hcd28848-21ntp_states22:44:041
81710rcu_preempt7254-21ntp_states22:04:051
81710rcu_preempt27985-21apt-get23:43:541
81700rcu_preempt0-21swapper/119:15:201
89950690irq/17-ehci_hcd0-21swapper/120:18:551
81690rcu_preempt11053-21diskmemload22:59:141
146250690irq/28-eth0-rx-181ktimersoftd/122:12:211
81680rcu_preempt32716-21ssh21:51:431
81680rcu_preempt19704-21apt-get21:28:521
81680rcu_preempt0-21swapper/123:27:581
81670rcu_preempt8771-21ssh23:08:121
81670rcu_preempt0-21swapper/122:18:251
81670rcu_preempt0-21swapper/100:00:141
81660rcu_preempt24251-21ssh21:35:500
81660rcu_preempt0-21swapper/121:18:001
81660rcu_preempt0-21swapper/100:09:371
81660rcu_preempt0-21swapper/023:22:120
81660rcu_preempt0-21swapper/023:05:450
81660rcu_preempt0-21swapper/022:51:390
81660rcu_preempt0-21swapper/022:29:420
81660rcu_preempt0-21swapper/000:30:440
81650rcu_preempt0-21swapper/123:37:381
81650rcu_preempt0-21swapper/123:11:521
81650rcu_preempt0-21swapper/122:28:491
81650rcu_preempt0-21swapper/120:56:521
81650rcu_preempt0-21swapper/119:09:071
81650rcu_preempt0-21swapper/100:14:191
81650rcu_preempt0-21swapper/023:55:080
81650rcu_preempt0-21swapper/023:55:080
81650rcu_preempt0-21swapper/023:34:550
81650rcu_preempt0-21swapper/023:29:090
81650rcu_preempt0-21swapper/023:24:480
81650rcu_preempt0-21swapper/022:41:040
81650rcu_preempt0-21swapper/022:34:200
81650rcu_preempt0-21swapper/022:23:470
81650rcu_preempt0-21swapper/022:16:280
81650rcu_preempt0-21swapper/021:58:190
81650rcu_preempt0-21swapper/021:41:360
81650rcu_preempt0-21swapper/021:29:240
81650rcu_preempt0-21swapper/021:23:470
81650rcu_preempt0-21swapper/021:10:520
81650rcu_preempt0-21swapper/021:07:190
81650rcu_preempt0-21swapper/020:49:160
81650rcu_preempt0-21swapper/020:20:040
81650rcu_preempt0-21swapper/020:12:020
81650rcu_preempt0-21swapper/019:50:130
81650rcu_preempt0-21swapper/019:13:410
81650rcu_preempt0-21swapper/000:27:060
81650rcu_preempt0-21swapper/000:08:020
81650rcu_preempt0-21swapper/000:08:020
81640rcu_preempt15268-21strings22:19:021
81640rcu_preempt0-21swapper/123:28:401
81640rcu_preempt0-21swapper/121:48:231
81640rcu_preempt0-21swapper/121:39:321
81640rcu_preempt0-21swapper/121:07:431
81640rcu_preempt0-21swapper/120:06:571
81640rcu_preempt0-21swapper/100:28:521
81640rcu_preempt0-21swapper/020:42:220
81640rcu_preempt0-21swapper/000:38:340
146250640irq/28-eth0-rx-41ktimersoftd/000:39:530
81630rcu_preempt0-21swapper/122:39:571
81630rcu_preempt0-21swapper/121:56:221
81630rcu_preempt0-21swapper/121:24:551
81620rcu_preempt28036-21ssh22:43:460
81620rcu_preempt11409-21kworker/0:119:08:520
81620rcu_preempt10807-21ssh22:10:280
81620rcu_preempt0-21swapper/123:39:041
81620rcu_preempt0-21swapper/119:18:581
81610rcu_preempt6499-21df_abs00:03:541
81610rcu_preempt6499-21df_abs00:03:541
81610rcu_preempt16739-21timerwakeupswit00:24:061
81610rcu_preempt0-21swapper/120:10:311
81610rcu_preempt0-21swapper/119:53:571
81600rcu_preempt3-21ksoftirqd/022:18:580
81600rcu_preempt2878-21sshd22:56:210
81600rcu_preempt13599-21ssh00:18:511
81600rcu_preempt0-21swapper/119:44:031
81590rcu_preempt29832-21ssh21:46:220
81590rcu_preempt13861-21ssh23:17:150
81590rcu_preempt0-21swapper/121:09:031
81590rcu_preempt0-21swapper/100:40:251
81570rcu_preempt0-21swapper/020:38:020
81570rcu_preempt0-21swapper/019:42:340
81570rcu_preempt0-21swapper/019:38:370
81570rcu_preempt0-21swapper/000:00:260
89950560irq/17-ehci_hcd945-21usb-storage20:43:590
89950560irq/17-ehci_hcd19-21ksoftirqd/122:28:201
81560rcu_preempt0-21swapper/119:34:001
146550560irq/30-eth0-tx-171rcuc/121:38:181
89950550irq/17-ehci_hcd0-21swapper/100:34:421
81550rcu_preempt8578-21sort21:03:391
81550rcu_preempt30808-21ssh22:48:551
81550rcu_preempt23226-21munin-run19:53:391
81550rcu_preempt0-21swapper/023:42:560
81550rcu_preempt0-21swapper/020:28:110
81540rcu_preempt0-21swapper/120:33:521
81540rcu_preempt0-21swapper/119:28:391
81540rcu_preempt0-21swapper/021:03:000
81540rcu_preempt0-21swapper/019:21:590
13079995450cyclictest945-21usb-storage23:49:430
81530rcu_preempt4846-21latency_hist20:48:391
81530rcu_preempt14661-21irqstats21:19:000
81530rcu_preempt14661-21irqstats21:19:000
81530rcu_preempt13475-21ssh21:17:180
81530rcu_preempt0-21swapper/000:21:290
13079995248cyclictest945-21usb-storage19:53:540
13079995245cyclictest945-21usb-storage23:45:330
81510rcu_preempt32719-21ssh23:52:301
81510rcu_preempt15606-21ssh23:19:111
81510rcu_preempt0-21swapper/122:54:071
81510rcu_preempt0-21swapper/121:59:031
146650510irq/31-eth0-tx-31303-21if_err_can120:23:561
13079995148cyclictest945-21usb-storage20:30:360
13079995146cyclictest945-21usb-storage00:09:080
81500rcu_preempt2470-21ssh23:55:201
81500rcu_preempt2470-21ssh23:55:201
1308099502cyclictest11517-1kworker/1:0H23:17:091
13079995046cyclictest945-21usb-storage00:14:270
81490rcu_preempt29111-21ntp_kernel_pll_20:14:001
146250490irq/28-eth0-rx-41ktimersoftd/019:44:590
13079994845cyclictest945-21usb-storage20:53:510
13079994844cyclictest945-21usb-storage19:58:510
81470rcu_preempt25443-21ps19:59:021
81460rcu_preempt0-21swapper/120:43:531
81460rcu_preempt0-21swapper/119:26:571
89950440irq/17-ehci_hcd15746-21apt-get19:23:500
13079994340cyclictest945-21usb-storage20:03:500
81420rcu_preempt0-21swapper/119:40:221
81410rcu_preempt0-21swapper/120:30:431
13079994138cyclictest945-21usb-storage20:17:070
81330rcu_preempt17377-21/usr/sbin/munin19:28:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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