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2026-04-28 - 22:08
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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 Tue Apr 28, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81780rcu_preempt19-21ksoftirqd/111:25:381
81750rcu_preempt23138-21if_eth010:51:271
81740rcu_preempt11357-21df_abs12:26:221
81730rcu_preempt2138-21snmpd09:48:031
147650730irq/28-eth0-rx-0-21swapper/107:12:571
81720rcu_preempt0-21swapper/111:59:091
81720rcu_preempt0-21swapper/009:31:390
81710rcu_preempt0-21swapper/012:16:520
81710rcu_preempt0-21swapper/010:11:310
81700rcu_preempt517-21diskmemload09:43:021
81700rcu_preempt0-21swapper/109:54:131
81700rcu_preempt0-21swapper/010:52:100
81700rcu_preempt0-21swapper/007:46:260
81690rcu_preempt20409-21sh09:49:340
81690rcu_preempt0-21swapper/110:21:281
81690rcu_preempt0-21swapper/110:11:271
81690rcu_preempt0-21swapper/110:01:071
81690rcu_preempt0-21swapper/108:11:341
81680rcu_preempt4953-21memory11:16:271
81680rcu_preempt26586-21ssh10:00:520
81680rcu_preempt0-21swapper/112:38:331
81680rcu_preempt0-21swapper/111:01:031
81680rcu_preempt0-21swapper/109:26:591
81680rcu_preempt0-21swapper/108:36:231
81670rcu_preempt5622-21munin-run10:21:071
81670rcu_preempt29722-21if_eth009:01:261
81670rcu_preempt2138-21snmpd08:51:240
81670rcu_preempt15446-21apt-get08:06:191
81670rcu_preempt0-21swapper/111:46:101
81670rcu_preempt0-21swapper/110:41:401
81660rcu_preempt12657-21timerandwakeup07:51:330
81660rcu_preempt0-21swapper/010:49:100
81650rcu_preempt30526-21ssh11:05:201
81650rcu_preempt0-21swapper/010:29:230
81640rcu_preempt0-21swapper/109:19:571
81640rcu_preempt0-21swapper/012:39:160
81640rcu_preempt0-21swapper/008:21:180
81640rcu_preempt0-21swapper/007:12:450
89850630irq/17-ehci_hcd945-21usb-storage08:22:431
81630rcu_preempt31712-21turbostat09:11:071
81630rcu_preempt1514-21ssh12:08:031
81630rcu_preempt0-21swapper/109:39:581
81630rcu_preempt0-21swapper/012:01:220
81630rcu_preempt0-21swapper/011:16:240
81630rcu_preempt0-21swapper/009:41:230
81630rcu_preempt0-21swapper/009:36:240
81630rcu_preempt0-21swapper/008:01:230
81630rcu_preempt0-21swapper/007:26:270
81620rcu_preempt9389-21apt09:31:070
81620rcu_preempt7430-21ssh12:18:401
81620rcu_preempt12068-21ssh09:35:191
81620rcu_preempt0-21swapper/112:11:101
81620rcu_preempt0-21swapper/111:26:101
81620rcu_preempt0-21swapper/010:31:210
81620rcu_preempt0-21swapper/009:18:580
81610rcu_preempt6152-21ssh09:24:431
81610rcu_preempt19698-21ssh11:42:051
81610rcu_preempt0-21swapper/112:45:291
81610rcu_preempt0-21swapper/110:34:181
81610rcu_preempt0-21swapper/011:47:500
81610rcu_preempt0-21swapper/011:11:290
81610rcu_preempt0-21swapper/010:23:300
81610rcu_preempt0-21swapper/010:17:150
81610rcu_preempt0-21swapper/008:11:220
81600rcu_preempt517-21diskmemload10:38:151
81600rcu_preempt32512-21ssh11:07:300
81600rcu_preempt28559-21ssh10:03:181
81600rcu_preempt25568-21egrep10:56:210
81600rcu_preempt18367-21if_eth008:16:250
81600rcu_preempt13948-21ls12:31:081
81600rcu_preempt0-21swapper/111:51:481
81600rcu_preempt0-21swapper/111:31:531
81600rcu_preempt0-21swapper/110:26:221
81600rcu_preempt0-21swapper/110:06:111
81600rcu_preempt0-21swapper/109:11:281
81600rcu_preempt0-21swapper/107:43:031
81600rcu_preempt0-21swapper/012:28:260
81600rcu_preempt0-21swapper/012:14:340
81600rcu_preempt0-21swapper/011:56:330
81600rcu_preempt0-21swapper/010:36:350
81590rcu_preempt9657-21ssh12:21:491
81590rcu_preempt3852-21ssh09:21:160
81590rcu_preempt3767-21ssh11:14:531
81590rcu_preempt29816-21ssh12:01:241
81590rcu_preempt28277-21df_abs08:56:231
81590rcu_preempt22239-21irqstats08:31:271
81590rcu_preempt21719-21ssh10:48:461
81590rcu_preempt21108-21ssh09:51:100
81590rcu_preempt0-21swapper/111:06:291
81590rcu_preempt0-21swapper/108:50:321
81590rcu_preempt0-21swapper/108:50:321
81590rcu_preempt0-21swapper/108:01:321
81590rcu_preempt0-21swapper/107:46:331
81590rcu_preempt0-21swapper/012:21:220
81590rcu_preempt0-21swapper/011:36:130
81580rcu_preempt25715-21ssh11:53:590
81580rcu_preempt15491-21ssh11:36:111
81580rcu_preempt13341-21kernelversion11:31:260
81580rcu_preempt0-21swapper/107:51:311
81580rcu_preempt0-21swapper/011:25:000
81580rcu_preempt0-21swapper/010:08:320
81580rcu_preempt0-21swapper/007:16:340
81570rcu_preempt27047-21df_inode08:51:221
81570rcu_preempt2379-21ssh12:10:450
81570rcu_preempt15443-21/usr/sbin/munin08:06:340
81570rcu_preempt0-21swapper/011:43:380
81570rcu_preempt0-21swapper/010:43:210
81570rcu_preempt0-21swapper/010:04:240
81560rcu_preempt0-21swapper/011:30:440
81560rcu_preempt0-21swapper/011:01:230
81560rcu_preempt0-21swapper/009:03:220
81560rcu_preempt0-21swapper/007:41:540
89850550irq/17-ehci_hcd171rcuc/108:21:071
81550rcu_preempt2138-21snmpd12:32:100
81550rcu_preempt0-21swapper/107:31:351
81550rcu_preempt0-21swapper/008:46:440
81550rcu_preempt0-21swapper/008:46:440
81550rcu_preempt0-21swapper/008:38:360
81550rcu_preempt0-21swapper/008:30:070
81550rcu_preempt0-21swapper/007:21:560
2627995551cyclictest41ktimersoftd/009:06:330
81540rcu_preempt29168-21sshd09:01:050
81540rcu_preempt0-21swapper/107:37:091
81540rcu_preempt0-21swapper/107:20:441
81540rcu_preempt0-21swapper/012:41:360
81540rcu_preempt0-21swapper/008:42:520
81540rcu_preempt0-21swapper/008:42:520
2627995248cyclictest945-21usb-storage07:31:270
2627995148cyclictest945-21usb-storage07:56:340
2627995148cyclictest945-21usb-storage07:36:220
81490rcu_preempt24991-21ntp_states08:41:301
81490rcu_preempt24991-21ntp_states08:41:301
81470rcu_preempt0-21swapper/008:35:540
2627994744cyclictest945-21usb-storage09:14:590
147650430irq/28-eth0-rx-0-21swapper/107:31:051
81400rcu_preempt19-21ksoftirqd/107:26:071
147950350irq/31-eth0-tx-19-21ksoftirqd/108:29:161
147950350irq/31-eth0-tx-0-21swapper/107:59:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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