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2025-12-30 - 11:22
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
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 100 highest latencies:
System rackaslot8.osadl.org (updated Tue Dec 30, 2025 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24882282252,19sleep10-21swapper/119:09:531
23072276246,19sleep20-21swapper/219:07:332
23882271237,21sleep00-21swapper/019:08:360
23812265238,18sleep30-21swapper/319:08:323
3762600,0sleep00-21swapper/023:22:230
14762600,0sleep30-21swapper/322:46:053
287592590,0sleep20-21swapper/200:33:522
134652590,0sleep20-21swapper/221:40:122
320462560,0sleep00-21swapper/021:14:030
70672550,0sleep00-21swapper/000:02:540
172702530,0sleep00-21swapper/000:26:560
211122520,0sleep10-21swapper/119:50:001
50192460,0sleep00-21swapper/000:38:450
68272450,0sleep30-21swapper/322:12:383
96952180,1sleep30-21swapper/323:27:423
305372180,0sleep00-21swapper/023:02:560
133082180,0chrt0-21swapper/223:10:592
143302160,0sleep30-21swapper/322:35:163
235972130,0sleep023595-21ssh23:35:200
94852120,0sleep012-21ksoftirqd/020:35:170
189512120,0sleep20-21swapper/223:33:012
87172100,0sleep10-21swapper/123:26:591
26089996,2cyclictest658-21snmpd22:29:163
26009997,1cyclictest22-21ksoftirqd/121:20:001
25969996,2cyclictest658-21snmpd22:21:560
26089983,3cyclictest275-21systemd-journal21:32:473
26009987,1cyclictest22-21ksoftirqd/119:45:001
26009985,2cyclictest5919-21taskset00:02:061
26009980,7cyclictest25241-21ssh22:41:101
25969987,1cyclictest12-21ksoftirqd/023:50:000
25969987,1cyclictest12-21ksoftirqd/000:20:010
25969984,3cyclictest275-21systemd-journal00:00:000
25969984,2cyclictest275-21systemd-journal20:55:000
15013280,0sleep30-21swapper/323:30:213
4626270,0sleep10-21swapper/122:48:201
28179270,0sleep20-21swapper/222:25:062
26089974,2cyclictest504-21dbus-daemon20:25:013
26089974,2cyclictest34-21ksoftirqd/322:15:163
26089974,2cyclictest275-21systemd-journal22:06:293
26089973,3cyclictest658-21snmpd00:26:283
26089973,3cyclictest5287-21cat00:20:163
26089973,3cyclictest23536-21systemctl23:35:193
26089973,2cyclictest275-21systemd-journal20:30:013
26089973,2cyclictest275-21systemd-journal19:12:523
26089973,1cyclictest0-21swapper/322:57:123
26089973,1cyclictest0-21swapper/322:21:543
26089973,1cyclictest0-21swapper/322:02:383
26089972,4cyclictest18076-21date23:50:203
26089970,3cyclictest275-21systemd-journal22:32:343
26059973,3cyclictest21603-21expr19:50:122
26059973,3cyclictest15812-21sshd00:07:512
26059973,3cyclictest15812-21sshd00:07:512
26059972,4cyclictest6841-21latency_hist00:40:002
26059971,2cyclictest18022-21head22:55:222
26009976,1cyclictest22-21ksoftirqd/123:35:011
26009976,1cyclictest22-21ksoftirqd/123:35:011
26009976,1cyclictest0-21swapper/100:32:251
26009973,3cyclictest658-21snmpd22:32:261
26009973,3cyclictest658-21snmpd21:03:111
26009973,3cyclictest1018-21cron23:05:001
26009972,3cyclictest27838-21grep22:25:011
26009970,7cyclictest2473-21ssh21:51:441
26009970,7cyclictest17513-21perf20:55:001
26009970,4cyclictest17373-21netstat22:55:181
26009970,1cyclictest141rcu_preempt21:10:111
25969973,3cyclictest658-21snmpd23:42:360
25969973,3cyclictest275-21systemd-journal20:25:000
25969973,1cyclictest0-21swapper/022:56:560
25969970,6cyclictest0-21swapper/021:20:170
26089966,0cyclictest0-21swapper/321:56:403
26089963,2cyclictest8112-21cstates19:20:153
26089963,2cyclictest663-21runrttasks19:59:333
26089963,2cyclictest663-21runrttasks19:30:123
26089963,2cyclictest658-21snmpd00:02:563
26089963,2cyclictest6571-21ssh21:35:313
26089963,2cyclictest504-21dbus-daemon20:54:593
26089963,2cyclictest31568-21ssh21:13:453
26089963,2cyclictest275-21systemd-journal21:05:003
26089963,2cyclictest275-21systemd-journal19:16:133
26089963,2cyclictest25129-21ssh21:46:053
26089963,2cyclictest21397-21tr19:50:123
26089963,2cyclictest19079-21sh21:25:053
26089963,2cyclictest15786-21sh23:12:463
26089963,2cyclictest14106-21hddtemp_smartct21:40:143
26089963,1cyclictest0-21swapper/321:50:083
26089963,1cyclictest0-21swapper/300:31:303
26089962,3cyclictest8866-21apt20:35:143
26089962,3cyclictest658-21snmpd21:22:243
26089962,3cyclictest658-21snmpd20:59:493
26089962,3cyclictest658-21snmpd20:34:583
26089962,3cyclictest658-21snmpd19:36:003
26089962,3cyclictest658-21snmpd19:26:273
26089962,3cyclictest658-21snmpd00:16:073
26089962,3cyclictest658-21snmpd00:11:553
26089962,3cyclictest26432-21tr23:00:183
26089962,3cyclictest2160-21smartctl21:15:163
26089962,3cyclictest20191-21cat23:15:173
26089962,3cyclictest13953-21basename20:45:163
26089962,3cyclictest11550-21ntp_kernel_pll_00:05:173
26089962,3cyclictest11550-21ntp_kernel_pll_00:05:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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