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2026-03-11 - 17:28
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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 376 highest latencies:
System rackcslot3.osadl.org (updated Wed Mar 11, 2026 12:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81920rcu_preempt30462-21ssh12:24:101
81770rcu_preempt31031-21cpu11:24:121
81760rcu_preempt27664-21ssh12:18:591
89850750irq/17-ehci_hcd945-21usb-storage09:44:471
81750rcu_preempt0-21swapper/111:02:071
81750rcu_preempt0-21swapper/108:24:221
89850740irq/17-ehci_hcd27104-21/usr/sbin/munin07:09:220
81740rcu_preempt0-21swapper/112:01:031
81740rcu_preempt0-21swapper/110:24:211
81740rcu_preempt0-21swapper/107:19:121
81730rcu_preempt9091-21wc11:43:591
81720rcu_preempt31010-21sh10:22:160
81710rcu_preempt0-21swapper/110:39:191
81710rcu_preempt0-21swapper/109:39:161
81710rcu_preempt0-21swapper/010:44:120
89450700irq/17-ehci_hcd0-21swapper/012:38:400
81700rcu_preempt5010-21df_abs07:49:100
81700rcu_preempt0-21swapper/012:29:170
81700rcu_preempt0-21swapper/010:49:580
81700rcu_preempt0-21swapper/009:58:530
81690rcu_preempt9651-21sh10:43:410
81690rcu_preempt19-21ksoftirqd/112:33:451
81690rcu_preempt0-21swapper/110:38:581
81670rcu_preempt0-21swapper/011:31:580
81670rcu_preempt0-21swapper/009:20:200
81650rcu_preempt30267-21munin-run12:23:591
81650rcu_preempt0-21swapper/107:09:161
81650rcu_preempt0-21swapper/012:39:210
81650rcu_preempt0-21swapper/012:04:100
81650rcu_preempt0-21swapper/012:04:100
81650rcu_preempt0-21swapper/011:00:010
81630rcu_preempt31280-21ssh12:24:210
81630rcu_preempt0-21swapper/008:43:070
81630rcu_preempt0-21swapper/008:34:210
81620rcu_preempt28860-21/usr/sbin/munin10:18:580
81620rcu_preempt0-21swapper/012:19:140
81620rcu_preempt0-21swapper/009:29:200
81620rcu_preempt0-21swapper/008:29:210
81610rcu_preempt5396-21sh09:34:170
81610rcu_preempt13633-21cat08:23:590
81600rcu_preempt19-21ksoftirqd/110:53:521
81600rcu_preempt18428-21apt-get09:59:101
81600rcu_preempt0-21swapper/011:44:130
81600rcu_preempt0-21swapper/007:44:230
81600rcu_preempt0-21swapper/007:44:230
89850590irq/17-ehci_hcd19-21ksoftirqd/111:17:111
81590rcu_preempt11154-21latency_hist08:13:590
81590rcu_preempt0-21swapper/012:14:240
81590rcu_preempt0-21swapper/012:01:270
81590rcu_preempt0-21swapper/011:19:160
81590rcu_preempt0-21swapper/011:14:200
81590rcu_preempt0-21swapper/010:27:460
81590rcu_preempt0-21swapper/008:01:560
81590rcu_preempt0-21swapper/007:19:150
81580rcu_preempt5298-21ssh11:35:190
81580rcu_preempt21132-21munin-run08:53:580
81580rcu_preempt19-21ksoftirqd/109:25:511
81580rcu_preempt0-21swapper/011:54:480
81580rcu_preempt0-21swapper/011:09:170
81580rcu_preempt0-21swapper/009:59:260
81580rcu_preempt0-21swapper/009:47:130
81570rcu_preempt8904-21ssh11:43:480
81570rcu_preempt5968-21ssh10:35:080
81570rcu_preempt27678-21ssh09:14:400
81570rcu_preempt0-21swapper/012:12:380
81570rcu_preempt0-21swapper/008:44:180
81560rcu_preempt3866-21ssh10:31:560
81560rcu_preempt31741-21ssh11:24:210
81560rcu_preempt21690-21if_eth008:54:150
81560rcu_preempt0-21swapper/010:13:570
81560rcu_preempt0-21swapper/010:04:150
81560rcu_preempt0-21swapper/009:25:260
81560rcu_preempt0-21swapper/007:35:160
81560rcu_preempt0-21swapper/007:29:530
81550rcu_preempt16830-21ssh10:56:370
81550rcu_preempt0-21swapper/011:05:040
81550rcu_preempt0-21swapper/008:11:240
81550rcu_preempt0-21swapper/007:58:170
81550rcu_preempt0-21swapper/007:14:160
89850540irq/17-ehci_hcd171rcuc/109:14:161
81540rcu_preempt19-21ksoftirqd/111:31:521
81540rcu_preempt0-21swapper/011:49:210
81540rcu_preempt0-21swapper/009:40:450
81540rcu_preempt0-21swapper/009:12:450
81530rcu_preempt0-21swapper/108:41:021
81530rcu_preempt0-21swapper/009:52:110
81530rcu_preempt0-21swapper/008:26:160
28258995350cyclictest945-21usb-storage07:55:031
89850520irq/17-ehci_hcd25761-21grep09:09:211
89850520irq/17-ehci_hcd171rcuc/108:29:211
81520rcu_preempt0-21swapper/007:25:110
147950520irq/31-eth0-tx-0-21swapper/112:11:261
89850510irq/17-ehci_hcd171rcuc/110:04:111
81510rcu_preempt8902-21diskstats08:04:130
81510rcu_preempt19-21ksoftirqd/110:43:591
81510rcu_preempt0-21swapper/109:37:101
28258995148cyclictest945-21usb-storage10:09:141
28258995148cyclictest945-21usb-storage08:19:071
28258995148cyclictest945-21usb-storage07:49:081
147950510irq/31-eth0-tx-0-21swapper/110:58:171
81500rcu_preempt2138-21snmpd09:08:230
81500rcu_preempt19-21ksoftirqd/111:08:381
81500rcu_preempt0-21swapper/109:30:331
28258995047cyclictest945-21usb-storage08:15:111
28258995047cyclictest181ktimersoftd/109:51:131
28258995045cyclictest8479-21kworker/1:008:06:101
28257995047cyclictest945-21usb-storage07:39:230
89850490irq/17-ehci_hcd0-21swapper/111:34:151
28257994915cyclictest0-21swapper/008:58:580
147950490irq/31-eth0-tx-0-21swapper/110:14:491
81480rcu_preempt0-21swapper/112:37:271
28258994844cyclictest945-21usb-storage07:14:171
28258994843cyclictest21115-21kworker/1:008:57:221
81470rcu_preempt19-21ksoftirqd/111:21:471
81470rcu_preempt19-21ksoftirqd/110:30:331
28258994744cyclictest945-21usb-storage08:44:571
28258994744cyclictest945-21usb-storage08:11:051
89850460irq/17-ehci_hcd945-21usb-storage11:39:391
81460rcu_preempt19-21ksoftirqd/111:52:011
81460rcu_preempt0-21swapper/112:43:091
28258994640cyclictest2164-21kworker/1:007:40:341
147950460irq/31-eth0-tx-0-21swapper/110:23:451
89850450irq/17-ehci_hcd945-21usb-storage11:58:401
28258994542cyclictest945-21usb-storage08:34:101
89850440irq/17-ehci_hcd19-21ksoftirqd/108:53:581
28258994441cyclictest181ktimersoftd/112:06:051
28258994441cyclictest181ktimersoftd/112:06:051
89850420irq/17-ehci_hcd945-21usb-storage08:59:131
28258994138cyclictest812-21scsi_eh_007:24:241
81400rcu_preempt30818-21ssh09:20:361
147850400irq/30-eth0-tx-24215-21ssh11:09:451
89450390irq/17-ehci_hcd1293-21fw_forwarded_lo07:34:131
147950390irq/31-eth0-tx-0-21swapper/109:07:241
147650390irq/28-eth0-rx-16062-21/usr/sbin/munin09:54:131
81360rcu_preempt19-21ksoftirqd/107:44:231
81360rcu_preempt19-21ksoftirqd/107:44:231
81350rcu_preempt19-21ksoftirqd/107:29:201
81320rcu_preempt19-21ksoftirqd/107:59:191
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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