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2025-11-20 - 11:10
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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 100 highest latencies:
System rackcslot3.osadl.org (updated Thu Nov 20, 2025 00:43:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
811030rcu_preempt19-21ksoftirqd/123:14:571
81750rcu_preempt28260-21ssh21:20:141
81750rcu_preempt0-21swapper/121:31:501
81740rcu_preempt14152-21ntp_kernel_pll_23:55:151
81740rcu_preempt0-21swapper/119:06:371
81730rcu_preempt0-21swapper/122:39:461
81730rcu_preempt0-21swapper/122:09:531
81720rcu_preempt4238-21switchtime21:35:181
81720rcu_preempt2732-21timerwakeupswit00:35:201
81700rcu_preempt4221-21df_abs20:00:110
81700rcu_preempt0-21swapper/123:10:111
81700rcu_preempt0-21swapper/023:11:140
81700rcu_preempt0-21swapper/020:50:220
90050690irq/17-ehci_hcd7884-21ssh22:43:231
81690rcu_preempt9078-21cpu20:20:091
81690rcu_preempt1866-21ssh21:31:150
81690rcu_preempt0-21swapper/023:32:440
81680rcu_preempt21591-21diskmemload00:23:470
81680rcu_preempt16515-21/usr/sbin/munin23:00:121
81680rcu_preempt0-21swapper/123:08:281
81680rcu_preempt0-21swapper/022:59:250
81680rcu_preempt0-21swapper/022:06:240
81670rcu_preempt8901-21sendmail20:19:531
81670rcu_preempt7237-21diskmemload22:41:210
81670rcu_preempt25318-21tr21:15:131
81670rcu_preempt24692-21munin-run22:14:540
81670rcu_preempt13329-21sh21:53:150
81670rcu_preempt0-21swapper/100:30:151
81660rcu_preempt0-21swapper/022:35:050
81650rcu_preempt9423-21sendmail_mailqu21:45:151
81650rcu_preempt32620-21munin-run19:14:540
81650rcu_preempt0-21swapper/020:29:540
81650rcu_preempt0-21swapper/000:35:060
81630rcu_preempt21701-21latency_hist21:09:541
81620rcu_preempt0-21swapper/023:20:080
81620rcu_preempt0-21swapper/021:40:150
81620rcu_preempt0-21swapper/021:15:460
81620rcu_preempt0-21swapper/020:55:130
81610rcu_preempt0-21swapper/022:00:170
81600rcu_preempt0-21swapper/023:50:230
81600rcu_preempt0-21swapper/022:45:240
81590rcu_preempt14884-21wc20:40:180
81590rcu_preempt14112-21netstat23:55:150
81590rcu_preempt0-21swapper/023:44:060
81590rcu_preempt0-21swapper/021:46:250
81590rcu_preempt0-21swapper/019:05:200
32486995947cyclictest181ktimersoftd/122:11:171
90050580irq/17-ehci_hcd946-21usb-storage20:13:411
81580rcu_preempt4896-21ssh21:37:070
81580rcu_preempt19161-21ssh23:05:030
81580rcu_preempt0-21swapper/023:45:440
81580rcu_preempt0-21swapper/022:51:350
81580rcu_preempt0-21swapper/021:56:150
81570rcu_preempt0-21swapper/023:27:190
81570rcu_preempt0-21swapper/022:19:550
81570rcu_preempt0-21swapper/000:30:150
81570rcu_preempt0-21swapper/000:06:580
81560rcu_preempt30462-21sh21:25:130
81560rcu_preempt0-21swapper/022:18:210
81560rcu_preempt0-21swapper/020:15:090
81560rcu_preempt0-21swapper/019:20:480
81560rcu_preempt0-21swapper/000:15:360
81550rcu_preempt2838-21ssh22:34:201
81550rcu_preempt2838-21ssh22:34:201
81550rcu_preempt26070-21ssh23:16:550
81550rcu_preempt0-21swapper/119:29:231
81550rcu_preempt0-21swapper/119:21:311
81550rcu_preempt0-21swapper/100:13:151
81550rcu_preempt0-21swapper/022:26:370
81550rcu_preempt0-21swapper/021:10:270
81550rcu_preempt0-21swapper/020:35:510
81550rcu_preempt0-21swapper/000:12:130
81550rcu_preempt0-21swapper/000:04:470
81540rcu_preempt30635-21ssh00:27:500
81540rcu_preempt0-21swapper/122:56:431
81540rcu_preempt0-21swapper/122:15:511
81540rcu_preempt0-21swapper/121:01:131
81540rcu_preempt0-21swapper/120:49:281
81540rcu_preempt0-21swapper/120:35:531
81540rcu_preempt0-21swapper/100:25:041
81540rcu_preempt0-21swapper/100:24:201
81540rcu_preempt0-21swapper/100:02:561
81540rcu_preempt0-21swapper/023:38:490
81530rcu_preempt1975-21ssh22:31:220
81530rcu_preempt1975-21ssh22:31:220
81530rcu_preempt0-21swapper/123:21:231
81530rcu_preempt0-21swapper/119:48:371
81530rcu_preempt0-21swapper/119:39:371
81530rcu_preempt0-21swapper/119:16:581
81530rcu_preempt0-21swapper/023:00:300
81530rcu_preempt0-21swapper/021:19:580
81530rcu_preempt0-21swapper/021:05:160
81530rcu_preempt0-21swapper/021:05:160
81530rcu_preempt0-21swapper/021:01:070
81530rcu_preempt0-21swapper/020:25:350
81530rcu_preempt0-21swapper/020:13:370
81530rcu_preempt0-21swapper/019:36:540
81530rcu_preempt0-21swapper/019:29:410
81520rcu_preempt0-21swapper/119:41:481
81520rcu_preempt0-21swapper/020:45:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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