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2025-12-18 - 14:17
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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 Thu Dec 18, 2025 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81730rcu_preempt18948-21munin-run00:25:100
81720rcu_preempt0-21swapper/022:50:290
81710rcu_preempt25901-21strings19:25:300
81710rcu_preempt0-21swapper/121:46:301
81690rcu_preempt19295-21diskmemload00:19:580
81690rcu_preempt0-21swapper/022:35:530
81680rcu_preempt20175-21apt-esm-hook19:05:181
81680rcu_preempt19295-21diskmemload23:45:180
147850680irq/30-eth0-tx-20081-21latency_hist22:00:100
81670rcu_preempt5414-21sh00:04:050
81670rcu_preempt2138-21snmpd21:31:500
81670rcu_preempt20740-21memory19:05:250
81660rcu_preempt23649-21wc19:15:340
81660rcu_preempt19295-21diskmemload21:16:360
81660rcu_preempt11921-21sh00:14:120
81660rcu_preempt0-21swapper/023:20:390
81660rcu_preempt0-21swapper/022:05:580
81650rcu_preempt0-21swapper/100:31:151
81650rcu_preempt0-21swapper/100:18:241
81640rcu_preempt31118-21ssh23:05:220
81640rcu_preempt0-21swapper/023:30:480
81630rcu_preempt28540-21/usr/sbin/munin23:50:280
81630rcu_preempt0-21swapper/123:50:351
81620rcu_preempt3198-21users23:10:350
81620rcu_preempt23955-21ssh22:54:261
81620rcu_preempt11182-21ssh22:35:171
81620rcu_preempt0-21swapper/119:54:211
81620rcu_preempt0-21swapper/000:35:280
81610rcu_preempt9208-21ssh22:31:021
81610rcu_preempt9145-21munin-run20:30:100
81610rcu_preempt6975-21ps00:05:370
81610rcu_preempt27293-21ssh23:47:401
81610rcu_preempt10459-21munin-run20:35:100
81610rcu_preempt0-21swapper/122:25:531
81610rcu_preempt0-21swapper/019:59:100
147650610irq/28-eth0-rx-181ktimersoftd/121:53:591
81600rcu_preempt6813-21/usr/sbin/munin21:40:100
81600rcu_preempt300-21sendmail_mailqu23:55:350
81600rcu_preempt28479-21ssh21:23:170
81600rcu_preempt28258-21ssh22:10:571
81600rcu_preempt21185-21ssh23:38:541
81600rcu_preempt1831-21ssh23:58:271
81600rcu_preempt0-21swapper/123:06:121
81600rcu_preempt0-21swapper/121:20:251
81600rcu_preempt0-21swapper/023:27:020
81590rcu_preempt9944-21ssh21:44:381
81590rcu_preempt6717-21ssh23:16:051
81590rcu_preempt24778-21ssh23:44:331
81590rcu_preempt17474-21ssh22:44:491
81590rcu_preempt0-21swapper/123:29:531
81590rcu_preempt0-21swapper/123:01:051
81590rcu_preempt0-21swapper/122:17:141
81590rcu_preempt0-21swapper/121:12:471
81590rcu_preempt0-21swapper/121:05:281
81590rcu_preempt0-21swapper/120:50:351
81590rcu_preempt0-21swapper/100:25:571
81590rcu_preempt0-21swapper/100:25:041
81590rcu_preempt0-21swapper/100:13:251
81590rcu_preempt0-21swapper/100:00:201
81590rcu_preempt0-21swapper/022:58:000
89850580irq/17-ehci_hcd945-21usb-storage20:28:111
81580rcu_preempt31941-21if_err_eth119:50:280
81580rcu_preempt2985-21ssh22:22:011
81580rcu_preempt25443-21ssh22:07:091
81580rcu_preempt25336-21ssh21:18:441
81580rcu_preempt11389-21ssh23:24:111
81580rcu_preempt0-21swapper/122:56:551
81580rcu_preempt0-21swapper/122:45:131
81580rcu_preempt0-21swapper/121:31:301
81580rcu_preempt0-21swapper/121:29:101
81580rcu_preempt0-21swapper/119:40:211
81580rcu_preempt0-21swapper/119:20:331
81580rcu_preempt0-21swapper/100:38:351
81580rcu_preempt0-21swapper/022:26:530
81580rcu_preempt0-21swapper/021:59:200
81580rcu_preempt0-21swapper/021:53:390
81580rcu_preempt0-21swapper/021:29:190
81580rcu_preempt0-21swapper/019:40:320
81580rcu_preempt0-21swapper/000:28:270
81570rcu_preempt19949-21ssh23:35:570
81570rcu_preempt0-21swapper/123:31:111
81570rcu_preempt0-21swapper/122:01:301
81570rcu_preempt0-21swapper/119:55:141
81570rcu_preempt0-21swapper/100:06:161
81570rcu_preempt0-21swapper/023:04:000
81570rcu_preempt0-21swapper/022:47:120
81570rcu_preempt0-21swapper/022:44:510
81570rcu_preempt0-21swapper/022:10:230
81560rcu_preempt6783-21ssh23:16:150
81560rcu_preempt652-21ssh22:19:370
81560rcu_preempt28039-21http_loadtime19:35:270
81560rcu_preempt2538-21ssh22:20:580
81560rcu_preempt21185-21ssh21:11:470
81560rcu_preempt0-21swapper/123:11:041
81560rcu_preempt0-21swapper/121:35:151
81560rcu_preempt0-21swapper/120:45:291
81560rcu_preempt0-21swapper/120:13:311
81560rcu_preempt0-21swapper/119:29:111
81560rcu_preempt0-21swapper/023:41:020
81560rcu_preempt0-21swapper/022:30:360
81560rcu_preempt0-21swapper/021:46:270
81560rcu_preempt0-21swapper/021:43:400
81560rcu_preempt0-21swapper/020:10:310
81560rcu_preempt0-21swapper/019:10:140
81550rcu_preempt19238-21ssh21:58:111
81550rcu_preempt0-21swapper/121:01:531
81550rcu_preempt0-21swapper/121:01:531
81550rcu_preempt0-21swapper/120:42:571
81550rcu_preempt0-21swapper/120:30:201
81550rcu_preempt0-21swapper/120:15:301
81550rcu_preempt0-21swapper/119:30:341
81550rcu_preempt0-21swapper/020:45:460
81550rcu_preempt0-21swapper/020:36:160
81550rcu_preempt0-21swapper/020:00:550
81540rcu_preempt0-21swapper/120:55:151
81540rcu_preempt0-21swapper/120:24:141
81540rcu_preempt0-21swapper/119:46:051
81540rcu_preempt0-21swapper/119:35:531
81540rcu_preempt0-21swapper/020:55:270
81540rcu_preempt0-21swapper/020:45:060
81540rcu_preempt0-21swapper/000:34:240
81530rcu_preempt30617-21if_can119:45:270
81530rcu_preempt17689-21wc21:00:350
81530rcu_preempt17689-21wc21:00:350
81530rcu_preempt0-21swapper/120:07:381
81530rcu_preempt0-21swapper/120:02:361
81530rcu_preempt0-21swapper/020:20:280
81530rcu_preempt0-21swapper/020:15:110
81530rcu_preempt0-21swapper/020:07:030
81520rcu_preempt0-21swapper/120:36:461
81520rcu_preempt0-21swapper/021:06:310
81520rcu_preempt0-21swapper/019:30:150
81510rcu_preempt0-21swapper/119:11:571
81510rcu_preempt0-21swapper/019:25:020
21328994643cyclictest945-21usb-storage19:15:591
81400rcu_preempt14949-21memory20:50:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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