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2026-04-27 - 05:53
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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 Apr 27, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
89850830irq/17-ehci_hcd945-21usb-storage19:12:430
81780rcu_preempt0-21swapper/119:13:341
81740rcu_preempt32139-21/usr/sbin/munin20:21:031
81730rcu_preempt24734-21sh21:33:570
81730rcu_preempt19-21ksoftirqd/122:43:091
81720rcu_preempt0-21swapper/121:31:251
81710rcu_preempt0-21swapper/122:01:171
81710rcu_preempt0-21swapper/000:11:520
81700rcu_preempt16309-21sh23:12:340
81700rcu_preempt0-21swapper/123:50:181
81700rcu_preempt0-21swapper/123:15:511
81700rcu_preempt0-21swapper/121:01:221
81700rcu_preempt0-21swapper/120:01:271
81700rcu_preempt0-21swapper/021:46:090
81690rcu_preempt32696-21apt-get00:41:181
81690rcu_preempt19484-21sh21:25:130
81690rcu_preempt14714-21ps21:16:261
81690rcu_preempt0-21swapper/123:44:531
81690rcu_preempt0-21swapper/123:40:071
81690rcu_preempt0-21swapper/122:59:141
81690rcu_preempt0-21swapper/122:36:221
81690rcu_preempt0-21swapper/122:20:541
81690rcu_preempt0-21swapper/121:45:551
81690rcu_preempt0-21swapper/121:45:551
81690rcu_preempt0-21swapper/119:41:251
81690rcu_preempt0-21swapper/100:21:211
81690rcu_preempt0-21swapper/100:16:091
81690rcu_preempt0-21swapper/020:56:240
81680rcu_preempt3659-21df_inode22:51:190
81680rcu_preempt13664-21diskmemload22:59:000
81680rcu_preempt11725-21sh00:02:080
81680rcu_preempt0-21swapper/122:07:341
81670rcu_preempt3814-21sh21:53:350
81670rcu_preempt16337-21df_inode22:16:180
81670rcu_preempt13785-21ssh23:08:471
81670rcu_preempt0-21swapper/122:52:231
81670rcu_preempt0-21swapper/023:57:100
81660rcu_preempt25963-21apt-get19:56:160
81660rcu_preempt18001-21switchtime21:21:301
81660rcu_preempt10032-21ssh23:01:280
81660rcu_preempt0-21swapper/123:53:441
81660rcu_preempt0-21swapper/122:11:211
81650rcu_preempt26074-21cpu23:31:180
81650rcu_preempt13664-21diskmemload23:29:460
81650rcu_preempt0-21swapper/121:51:351
81650rcu_preempt0-21swapper/119:52:421
81650rcu_preempt0-21swapper/100:34:211
81650rcu_preempt0-21swapper/100:08:331
81650rcu_preempt0-21swapper/021:28:090
81650rcu_preempt0-21swapper/020:01:180
81640rcu_preempt0-21swapper/121:06:261
81640rcu_preempt0-21swapper/119:24:341
81640rcu_preempt0-21swapper/100:12:531
81640rcu_preempt0-21swapper/000:21:260
81630rcu_preempt680-21cpu22:46:171
81630rcu_preempt18399-21/usr/sbin/munin19:26:200
81630rcu_preempt0-21swapper/123:21:331
81630rcu_preempt0-21swapper/120:36:161
81630rcu_preempt0-21swapper/023:21:150
81630rcu_preempt0-21swapper/022:11:040
81630rcu_preempt0-21swapper/020:31:230
81630rcu_preempt0-21swapper/000:06:260
81620rcu_preempt878-21memory00:41:260
81620rcu_preempt3-21ksoftirqd/021:16:270
81620rcu_preempt15770-21latency_hist19:16:030
81620rcu_preempt12780-21ssh00:05:291
81620rcu_preempt0-21swapper/121:56:181
81620rcu_preempt0-21swapper/119:46:291
81610rcu_preempt22240-21if_can022:26:211
81610rcu_preempt1643-21kworker/0:223:20:380
81610rcu_preempt0-21swapper/123:01:281
81610rcu_preempt0-21swapper/100:39:581
81610rcu_preempt0-21swapper/023:55:250
81610rcu_preempt0-21swapper/023:38:410
81610rcu_preempt0-21swapper/021:11:170
81600rcu_preempt20104-21ssh23:20:551
81600rcu_preempt0-21swapper/122:31:241
81600rcu_preempt0-21swapper/121:27:281
81600rcu_preempt0-21swapper/120:35:041
81600rcu_preempt0-21swapper/100:27:321
81600rcu_preempt0-21swapper/023:50:010
81600rcu_preempt0-21swapper/023:42:290
81600rcu_preempt0-21swapper/021:57:450
81600rcu_preempt0-21swapper/021:39:070
81590rcu_preempt9273-21ssh23:58:081
81590rcu_preempt12989-21users23:06:300
81590rcu_preempt0-21swapper/123:34:341
81590rcu_preempt0-21swapper/123:30:411
81590rcu_preempt0-21swapper/121:46:501
81590rcu_preempt0-21swapper/022:07:020
81590rcu_preempt0-21swapper/022:01:300
81580rcu_preempt31631-21ssh22:42:060
81580rcu_preempt25903-21ssh00:28:100
81580rcu_preempt22633-21rm22:26:260
81580rcu_preempt18911-21ssh22:21:061
81580rcu_preempt0-21swapper/121:41:011
81580rcu_preempt0-21swapper/121:12:301
81580rcu_preempt0-21swapper/120:53:551
81580rcu_preempt0-21swapper/120:45:331
81580rcu_preempt0-21swapper/120:29:561
81580rcu_preempt0-21swapper/022:49:420
81570rcu_preempt16056-21diskstats19:16:171
81570rcu_preempt0-21swapper/120:50:021
81570rcu_preempt0-21swapper/120:07:471
81570rcu_preempt0-21swapper/119:37:061
81570rcu_preempt0-21swapper/119:31:281
81570rcu_preempt0-21swapper/021:41:080
81570rcu_preempt0-21swapper/021:41:080
81570rcu_preempt0-21swapper/000:35:580
81570rcu_preempt0-21swapper/000:18:240
147950570irq/31-eth0-tx-41ktimersoftd/022:31:090
81560rcu_preempt13664-21diskmemload00:36:270
81560rcu_preempt0-21swapper/119:28:171
81560rcu_preempt0-21swapper/022:24:240
81560rcu_preempt0-21swapper/019:31:240
81550rcu_preempt28084-21sort22:36:240
81550rcu_preempt2138-21snmpd21:03:220
81550rcu_preempt0-21swapper/020:16:300
81540rcu_preempt0-21swapper/021:06:240
81540rcu_preempt0-21swapper/019:41:230
81530rcu_preempt0-21swapper/121:00:021
81530rcu_preempt0-21swapper/120:00:561
81530rcu_preempt0-21swapper/020:41:170
81530rcu_preempt0-21swapper/019:23:340
81520rcu_preempt2138-21snmpd19:38:040
81520rcu_preempt0-21swapper/020:06:280
81510rcu_preempt24956-21diskstats19:51:170
81510rcu_preempt2256-21users20:26:310
15682995148cyclictest945-21usb-storage20:21:550
15684995047cyclictest945-21usb-storage20:11:141
15684995047cyclictest945-21usb-storage20:11:141
81490rcu_preempt6694-21modprobe20:46:220
81490rcu_preempt0-21swapper/020:36:240
81480rcu_preempt7630-21df20:51:170
81480rcu_preempt19-21ksoftirqd/120:26:031
15682994743cyclictest945-21usb-storage20:14:550
15682994743cyclictest945-21usb-storage20:14:550
15682993734cyclictest945-21usb-storage19:46:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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