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2026-04-22 - 03:08
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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 Wed Apr 22, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81810rcu_preempt27774-21ssh23:22:281
81800rcu_preempt21909-21ls20:56:161
81800rcu_preempt19-21ksoftirqd/122:49:451
81800rcu_preempt19-21ksoftirqd/122:49:451
81790rcu_preempt0-21swapper/120:06:121
81780rcu_preempt0-21swapper/119:16:071
81770rcu_preempt29645-21if_eth019:21:091
81770rcu_preempt19-21ksoftirqd/123:02:241
81770rcu_preempt19-21ksoftirqd/122:35:151
89850760irq/17-ehci_hcd0-21swapper/123:16:361
81750rcu_preempt19-21ksoftirqd/122:51:201
81750rcu_preempt0-21swapper/119:13:451
147950750irq/31-eth0-tx-0-21swapper/123:37:281
81710rcu_preempt31706-21ssh23:31:080
81710rcu_preempt0-21swapper/023:07:290
81710rcu_preempt0-21swapper/022:31:150
81710rcu_preempt0-21swapper/020:36:070
81710rcu_preempt0-21swapper/000:43:150
81700rcu_preempt25818-21diskmemload00:00:400
81700rcu_preempt0-21swapper/023:26:140
81700rcu_preempt0-21swapper/019:46:110
81700rcu_preempt0-21swapper/019:36:030
81700rcu_preempt0-21swapper/019:31:020
81690rcu_preempt0-21swapper/022:45:020
81690rcu_preempt0-21swapper/021:26:120
81690rcu_preempt0-21swapper/020:01:080
81680rcu_preempt19-21ksoftirqd/100:28:551
81680rcu_preempt17551-21iwlist20:41:101
81670rcu_preempt19-21ksoftirqd/122:27:391
81650rcu_preempt15121-21missed_timers20:31:110
81650rcu_preempt11746-21ssh22:51:140
89850630irq/17-ehci_hcd41ktimersoftd/019:11:110
81630rcu_preempt0-21swapper/022:46:030
81630rcu_preempt0-21swapper/022:46:030
81630rcu_preempt0-21swapper/022:26:160
81630rcu_preempt0-21swapper/022:21:040
81630rcu_preempt0-21swapper/021:36:060
81630rcu_preempt0-21swapper/021:16:330
81630rcu_preempt0-21swapper/000:35:010
81620rcu_preempt29097-21munin-run19:20:490
81620rcu_preempt0-21swapper/020:56:030
89850610irq/17-ehci_hcd945-21usb-storage21:54:101
81610rcu_preempt0-21swapper/022:59:160
81610rcu_preempt0-21swapper/000:11:180
89850600irq/17-ehci_hcd945-21usb-storage23:41:171
89450600irq/17-ehci_hcd3527-21ssh23:38:540
81600rcu_preempt27225-21ssh23:21:160
81600rcu_preempt19389-1kworker/0:0H23:14:210
81600rcu_preempt10464-21switchtime20:11:160
81600rcu_preempt0-21swapper/022:06:160
89850590irq/17-ehci_hcd945-21usb-storage00:31:011
81590rcu_preempt5594-21ssh21:37:031
81590rcu_preempt31812-21ssh00:38:141
81590rcu_preempt2048-21ssh00:43:351
81590rcu_preempt19468-21ssh22:05:001
81590rcu_preempt18889-21ssh22:02:390
81590rcu_preempt0-21swapper/121:59:051
81590rcu_preempt0-21swapper/121:45:061
81590rcu_preempt0-21swapper/023:03:400
81580rcu_preempt5110-21ssh22:40:051
81580rcu_preempt3238-21ssh21:33:081
81580rcu_preempt31638-21munin-run19:30:490
81580rcu_preempt30641-21ssh21:23:380
81580rcu_preempt0-21swapper/123:12:581
81580rcu_preempt0-21swapper/122:59:171
81580rcu_preempt0-21swapper/122:07:491
81580rcu_preempt0-21swapper/121:11:131
81580rcu_preempt0-21swapper/120:26:171
81580rcu_preempt0-21swapper/119:46:551
81580rcu_preempt0-21swapper/119:44:181
81580rcu_preempt0-21swapper/023:51:140
81580rcu_preempt0-21swapper/020:06:080
81580rcu_preempt0-21swapper/000:21:140
81580rcu_preempt0-21swapper/000:01:550
81580rcu_preempt0-21swapper/000:01:550
89850570irq/17-ehci_hcd945-21usb-storage19:31:091
81570rcu_preempt5572-21ssh23:41:570
81570rcu_preempt3524-21ssh21:34:030
81570rcu_preempt23782-21ssh22:11:390
81570rcu_preempt2138-21snmpd22:13:311
81570rcu_preempt16434-21ssh21:58:190
81570rcu_preempt10937-21ssh21:47:240
81570rcu_preempt1039-21ssh21:29:211
81570rcu_preempt0-21swapper/123:58:191
81570rcu_preempt0-21swapper/123:54:401
81570rcu_preempt0-21swapper/123:31:461
81570rcu_preempt0-21swapper/122:22:521
81570rcu_preempt0-21swapper/121:47:421
81570rcu_preempt0-21swapper/121:21:111
81570rcu_preempt0-21swapper/121:20:471
81570rcu_preempt0-21swapper/120:53:231
81570rcu_preempt0-21swapper/100:21:101
81570rcu_preempt0-21swapper/100:20:011
81570rcu_preempt0-21swapper/100:07:011
81570rcu_preempt0-21swapper/100:02:001
81570rcu_preempt0-21swapper/100:02:001
81570rcu_preempt0-21swapper/023:17:050
81570rcu_preempt0-21swapper/022:18:500
81570rcu_preempt0-21swapper/019:44:150
89850560irq/17-ehci_hcd0-21swapper/120:36:001
81560rcu_preempt9102-21ssh23:50:401
81560rcu_preempt29964-21ntpq19:21:130
81560rcu_preempt18670-21ssh00:08:010
81560rcu_preempt0-21swapper/123:27:021
81560rcu_preempt0-21swapper/122:18:081
81560rcu_preempt0-21swapper/119:56:321
81560rcu_preempt0-21swapper/119:56:321
81560rcu_preempt0-21swapper/119:51:061
81560rcu_preempt0-21swapper/100:12:541
81560rcu_preempt0-21swapper/023:49:320
81560rcu_preempt0-21swapper/022:36:590
81560rcu_preempt0-21swapper/021:51:080
81560rcu_preempt0-21swapper/021:15:380
81560rcu_preempt0-21swapper/021:06:030
81560rcu_preempt0-21swapper/020:28:340
81560rcu_preempt0-21swapper/019:56:190
81560rcu_preempt0-21swapper/019:56:190
81550rcu_preempt23444-21ssh00:19:590
81550rcu_preempt0-21swapper/123:08:551
81550rcu_preempt0-21swapper/000:37:020
81550rcu_preempt0-21swapper/000:30:410
27850995548cyclictest945-21usb-storage20:21:011
81540rcu_preempt10712-21latency_hist20:15:500
81540rcu_preempt0-21swapper/119:39:351
81540rcu_preempt0-21swapper/021:44:110
89850520irq/17-ehci_hcd2504-1kworker/1:2H20:47:041
81520rcu_preempt0-21swapper/122:42:061
81520rcu_preempt0-21swapper/021:02:140
81520rcu_preempt0-21swapper/020:53:230
27850995248cyclictest945-21usb-storage20:11:031
81510rcu_preempt11022-21fw_conntrack20:16:061
27850995147cyclictest945-21usb-storage20:31:121
27849995148cyclictest945-21usb-storage20:46:000
81500rcu_preempt0-21swapper/120:02:381
27850995046cyclictest945-21usb-storage21:01:381
81490rcu_preempt0-21swapper/020:21:380
27849994946cyclictest945-21usb-storage20:43:120
81480rcu_preempt5321-21mailstats19:51:130
27850994540cyclictest945-21usb-storage21:06:441
89450430irq/17-ehci_hcd0-21swapper/119:26:511
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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