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2026-01-05 - 10:41
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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 Mon Jan 05, 2026 00:43:26)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
81840rcu_preempt30797-21cat21:11:181
81820rcu_preempt3-21ksoftirqd/021:26:520
81740rcu_preempt30096-21/usr/sbin/munin23:56:230
81740rcu_preempt23299-1kworker/1:0H21:59:111
89850730irq/17-ehci_hcd171rcuc/120:20:591
89850720irq/17-ehci_hcd945-21usb-storage19:06:591
81720rcu_preempt30159-21diskmemload22:12:370
81720rcu_preempt28295-21latency21:01:221
81710rcu_preempt26650-21df_abs23:51:141
81700rcu_preempt0-21swapper/122:31:251
81700rcu_preempt0-21swapper/121:06:191
81690rcu_preempt17562-21sh23:35:540
81690rcu_preempt0-21swapper/123:32:061
81690rcu_preempt0-21swapper/122:25:271
81690rcu_preempt0-21swapper/000:27:590
81690rcu_preempt0-21swapper/000:11:220
81680rcu_preempt566-21diskstats23:06:170
81680rcu_preempt30159-21diskmemload00:34:230
81680rcu_preempt29582-21sort21:06:240
81680rcu_preempt17891-21ssh22:40:411
81680rcu_preempt15391-21sh21:40:231
81680rcu_preempt0-21swapper/123:46:201
81680rcu_preempt0-21swapper/100:00:021
81670rcu_preempt7465-21sshd19:41:131
81670rcu_preempt0-21swapper/100:34:421
81670rcu_preempt0-21swapper/023:47:170
81660rcu_preempt32216-21apt-get19:11:100
81660rcu_preempt0-21swapper/022:55:420
81650rcu_preempt4837-21uname21:21:221
81650rcu_preempt0-21swapper/122:06:211
81650rcu_preempt0-21swapper/022:49:200
81650rcu_preempt0-21swapper/019:06:130
81650rcu_preempt0-21swapper/000:19:390
81640rcu_preempt1833-21ntp_kernel_pll_21:16:221
81640rcu_preempt0-21swapper/000:37:340
81630rcu_preempt6083-21ssh22:19:540
81630rcu_preempt5945-21ssh21:23:140
81630rcu_preempt31909-21ssh23:03:590
81630rcu_preempt22010-21ssh23:41:591
81630rcu_preempt0-21swapper/019:20:350
81620rcu_preempt0-21swapper/123:01:271
81620rcu_preempt0-21swapper/121:33:361
81620rcu_preempt0-21swapper/119:11:321
81620rcu_preempt0-21swapper/023:42:380
81620rcu_preempt0-21swapper/022:58:030
81620rcu_preempt0-21swapper/019:23:040
81610rcu_preempt32223-21ssh22:08:250
81610rcu_preempt26922-21ssh21:59:500
81610rcu_preempt26846-21ssh23:51:180
81610rcu_preempt15237-21ssh22:36:010
81610rcu_preempt11494-21/usr/sbin/munin19:56:160
81610rcu_preempt10169-21diskstats21:31:150
81610rcu_preempt0-21swapper/023:14:060
81610rcu_preempt0-21swapper/022:24:300
81610rcu_preempt0-21swapper/021:51:100
81610rcu_preempt0-21swapper/021:46:010
81610rcu_preempt0-21swapper/021:41:250
81610rcu_preempt0-21swapper/021:13:110
81600rcu_preempt8539-21rm00:16:181
81600rcu_preempt4627-21ssh00:08:400
81600rcu_preempt30159-21diskmemload22:53:311
81600rcu_preempt30159-21diskmemload00:22:431
81600rcu_preempt21653-21ssh21:51:051
81600rcu_preempt19835-21ssh23:38:580
81600rcu_preempt19-21ksoftirqd/123:07:401
81600rcu_preempt14295-21sshd21:37:130
81600rcu_preempt0-21swapper/123:14:161
81600rcu_preempt0-21swapper/122:59:031
81600rcu_preempt0-21swapper/122:27:231
81600rcu_preempt0-21swapper/122:19:021
81600rcu_preempt0-21swapper/121:30:001
81600rcu_preempt0-21swapper/100:15:201
81600rcu_preempt0-21swapper/023:27:500
81600rcu_preempt0-21swapper/022:31:140
81600rcu_preempt0-21swapper/022:26:160
81590rcu_preempt7105-21python19:36:250
81590rcu_preempt2851-21ssh22:13:351
81590rcu_preempt25225-21/usr/sbin/munin20:51:171
81590rcu_preempt20457-21ssh22:44:211
81590rcu_preempt11175-21ssh23:24:220
81590rcu_preempt0-21swapper/123:39:251
81590rcu_preempt0-21swapper/122:46:111
81590rcu_preempt0-21swapper/122:02:471
81590rcu_preempt0-21swapper/120:36:061
81590rcu_preempt0-21swapper/119:46:211
81590rcu_preempt0-21swapper/023:16:210
81590rcu_preempt0-21swapper/022:45:180
81590rcu_preempt0-21swapper/020:26:140
81590rcu_preempt0-21swapper/020:06:160
81580rcu_preempt29170-21ssh22:02:590
81580rcu_preempt0-21swapper/121:41:151
81580rcu_preempt0-21swapper/120:56:251
81580rcu_preempt0-21swapper/120:41:181
81580rcu_preempt0-21swapper/119:36:171
81580rcu_preempt0-21swapper/100:27:071
81580rcu_preempt0-21swapper/100:05:101
81580rcu_preempt0-21swapper/021:19:410
81580rcu_preempt0-21swapper/000:03:030
81570rcu_preempt30159-21diskmemload23:28:121
81570rcu_preempt24382-21if_eth020:46:160
81570rcu_preempt12363-21ssh00:21:360
81570rcu_preempt12349-21sshd19:58:131
81570rcu_preempt0-21swapper/123:25:081
81570rcu_preempt0-21swapper/121:49:551
81570rcu_preempt0-21swapper/120:46:091
81570rcu_preempt0-21swapper/119:26:271
81570rcu_preempt0-21swapper/021:02:400
81570rcu_preempt0-21swapper/019:53:140
81570rcu_preempt0-21swapper/019:33:200
81560rcu_preempt3907-21diskstats19:26:180
81560rcu_preempt2138-21snmpd20:22:330
81560rcu_preempt0-21swapper/123:16:581
81560rcu_preempt0-21swapper/120:15:131
81560rcu_preempt0-21swapper/120:01:001
81560rcu_preempt0-21swapper/100:06:191
81560rcu_preempt0-21swapper/020:59:230
81560rcu_preempt0-21swapper/020:51:130
81560rcu_preempt0-21swapper/019:41:280
81550rcu_preempt17129-21cut20:16:270
81550rcu_preempt0-21swapper/120:06:221
81550rcu_preempt0-21swapper/100:37:271
81550rcu_preempt0-21swapper/020:45:230
81550rcu_preempt0-21swapper/020:40:540
81540rcu_preempt3503-21sshd19:24:131
81540rcu_preempt0-21swapper/120:21:081
81540rcu_preempt0-21swapper/119:20:451
81540rcu_preempt0-21swapper/020:05:560
81530rcu_preempt10705-21ntpq19:51:271
81520rcu_preempt0-21swapper/120:32:351
81510rcu_preempt0-21swapper/119:33:131
81510rcu_preempt0-21swapper/020:32:530
81410rcu_preempt19-21ksoftirqd/120:26:131
81400rcu_preempt0-21swapper/019:46:180
81330rcu_preempt15168-21tr20:11:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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