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2025-11-25 - 07:22
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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 792 highest latencies:
System rackcslot3.osadl.org (updated Tue Nov 25, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81700rcu_preempt23202-21diskmemload23:57:210
81700rcu_preempt23202-21diskmemload22:15:101
90050690irq/17-ehci_hcd0-21swapper/123:59:241
81690rcu_preempt3988-21sh22:34:101
81690rcu_preempt0-21swapper/023:10:130
81690rcu_preempt0-21swapper/021:49:440
81680rcu_preempt3302-21sh22:31:530
81680rcu_preempt23202-21diskmemload22:08:291
81680rcu_preempt2235-21snmpd23:31:551
81680rcu_preempt0-21swapper/023:18:390
81670rcu_preempt0-21swapper/123:39:071
81670rcu_preempt0-21swapper/121:58:521
81660rcu_preempt30782-21sh00:25:441
81660rcu_preempt23202-21diskmemload22:56:481
81660rcu_preempt15820-21ntp_states22:55:130
81660rcu_preempt0-21swapper/123:44:241
81660rcu_preempt0-21swapper/122:00:451
81660rcu_preempt0-21swapper/120:30:141
81660rcu_preempt0-21swapper/120:05:061
81650rcu_preempt6466-21sendmail_mailst20:00:160
81650rcu_preempt28529-21ssh21:18:480
81650rcu_preempt23202-21diskmemload23:47:321
81650rcu_preempt14261-21ssh22:52:410
81650rcu_preempt0-21swapper/123:06:411
81650rcu_preempt0-21swapper/122:45:161
81650rcu_preempt0-21swapper/121:36:511
81650rcu_preempt0-21swapper/121:18:191
81640rcu_preempt23986-21if_wlan022:10:090
81640rcu_preempt17778-21ntp_states00:00:130
81640rcu_preempt0-21swapper/122:41:341
81640rcu_preempt0-21swapper/120:24:421
81640rcu_preempt0-21swapper/019:25:060
81630rcu_preempt9816-21sshd20:15:111
81630rcu_preempt22681-21open_files00:10:141
81630rcu_preempt11934-21ssh21:47:311
81630rcu_preempt0-21swapper/123:17:411
81630rcu_preempt0-21swapper/119:17:351
81630rcu_preempt0-21swapper/100:15:171
81630rcu_preempt0-21swapper/019:54:510
81630rcu_preempt0-21swapper/019:10:090
90050620irq/17-ehci_hcd30926-21apt-get23:25:041
81620rcu_preempt8434-21diskmemload21:40:161
81620rcu_preempt471-21/usr/sbin/munin19:40:061
81620rcu_preempt0-21swapper/122:10:161
81620rcu_preempt0-21swapper/121:13:431
81620rcu_preempt0-21swapper/119:38:361
81620rcu_preempt0-21swapper/022:41:440
81620rcu_preempt0-21swapper/021:25:140
81610rcu_preempt1397-21ssh00:31:581
81610rcu_preempt0-21swapper/119:08:021
81610rcu_preempt0-21swapper/022:28:340
81600rcu_preempt3516-21ssh21:31:241
81600rcu_preempt28780-21ssh00:23:121
81600rcu_preempt2006-21/usr/sbin/munin21:30:140
81600rcu_preempt0-21swapper/123:20:411
81600rcu_preempt0-21swapper/122:52:341
81600rcu_preempt0-21swapper/120:45:061
81600rcu_preempt0-21swapper/100:35:341
81600rcu_preempt0-21swapper/100:02:391
81600rcu_preempt0-21swapper/023:05:060
81600rcu_preempt0-21swapper/021:12:150
81600rcu_preempt0-21swapper/021:05:050
81590rcu_preempt4373-21ssh22:34:591
81590rcu_preempt1619-21ssh21:29:171
81590rcu_preempt0-21swapper/122:26:191
81590rcu_preempt0-21swapper/023:28:070
81590rcu_preempt0-21swapper/021:40:050
81590rcu_preempt0-21swapper/020:05:130
81590rcu_preempt0-21swapper/019:30:060
81580rcu_preempt30726-21ssh21:21:551
81580rcu_preempt29439-21ssh00:24:540
81580rcu_preempt24254-21ssh23:10:461
81580rcu_preempt24063-21ssh00:14:350
81580rcu_preempt20990-21ssh00:06:171
81580rcu_preempt19118-21ssh23:01:390
81580rcu_preempt13917-21ssh23:53:481
81580rcu_preempt0-21swapper/121:54:411
81580rcu_preempt0-21swapper/121:05:091
81580rcu_preempt0-21swapper/120:55:061
81580rcu_preempt0-21swapper/120:50:121
81580rcu_preempt0-21swapper/023:36:430
81580rcu_preempt0-21swapper/021:23:470
81580rcu_preempt0-21swapper/020:27:460
81570rcu_preempt19102-21ssh23:01:361
81570rcu_preempt13389-21ssh23:51:460
81570rcu_preempt0-21swapper/122:23:411
81570rcu_preempt0-21swapper/120:40:161
81570rcu_preempt0-21swapper/120:39:511
81570rcu_preempt0-21swapper/119:10:121
81560rcu_preempt27451-21ssh22:15:440
81560rcu_preempt2551-21cpuspeed_turbos00:35:030
81560rcu_preempt23202-21diskmemload23:43:000
81560rcu_preempt22432-21ssh22:07:030
81560rcu_preempt14265-21ssh21:51:090
81560rcu_preempt0-21swapper/119:55:141
81560rcu_preempt0-21swapper/119:26:111
81560rcu_preempt0-21swapper/022:00:300
81560rcu_preempt0-21swapper/019:52:230
81560rcu_preempt0-21swapper/000:22:020
81550rcu_preempt30091-21ssh22:20:490
81550rcu_preempt21011-21ssh00:06:230
81550rcu_preempt18281-21/usr/sbin/munin20:50:100
81550rcu_preempt14186-21switchtime20:30:160
81550rcu_preempt0-21swapper/120:04:131
81550rcu_preempt0-21swapper/119:51:111
81550rcu_preempt0-21swapper/023:34:370
81550rcu_preempt0-21swapper/022:48:380
81550rcu_preempt0-21swapper/021:38:530
81550rcu_preempt0-21swapper/019:18:050
81550rcu_preempt0-21swapper/000:30:030
81540rcu_preempt12464-21irqstats20:25:101
81540rcu_preempt0-21swapper/023:48:520
81540rcu_preempt0-21swapper/023:22:120
81540rcu_preempt0-21swapper/021:57:470
81540rcu_preempt0-21swapper/020:20:230
81540rcu_preempt0-21swapper/000:15:470
81530rcu_preempt8382-21diskstats20:10:061
81530rcu_preempt5840-21ssh22:36:200
81530rcu_preempt1647-21sshd19:44:120
81530rcu_preempt0-21swapper/021:00:150
81530rcu_preempt0-21swapper/020:59:190
81530rcu_preempt0-21swapper/020:17:510
81520rcu_preempt0-21swapper/119:23:101
81520rcu_preempt0-21swapper/019:39:290
81510rcu_preempt0-21swapper/019:49:030
81510rcu_preempt0-21swapper/019:24:390
81500rcu_preempt0-21swapper/119:47:081
81500rcu_preempt0-21swapper/020:46:360
25218994745cyclictest946-21usb-storage20:10:160
81460rcu_preempt31486-21users19:30:181
90050450irq/17-ehci_hcd41ktimersoftd/019:05:170
25218994322cyclictest0-21swapper/020:44:460
90050420irq/17-ehci_hcd946-21usb-storage20:39:370
90050410irq/17-ehci_hcd946-21usb-storage21:03:411
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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