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2026-04-25 - 13:36
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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 Sat Apr 25, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
198672323293,19sleep20-21swapper/219:06:432
198232282220,21sleep10-21swapper/119:06:101
200312270239,21sleep00-21swapper/019:08:490
200192266233,22sleep30-21swapper/319:08:403
85082620,0sleep00-21swapper/023:25:160
85082620,0sleep00-21swapper/023:25:150
327572620,1sleep132756-40runlevel00:00:001
236692620,0sleep10-21swapper/123:34:581
42462600,0sleep00-21swapper/022:43:470
114922590,0sleep30-21swapper/323:07:213
68612580,0sleep20-21swapper/223:44:162
126462580,0sleep20-21swapper/222:48:542
188242560,0sleep10-21swapper/122:13:131
276652550,0sleep30-21swapper/322:57:323
9742540,0sleep30-21swapper/300:20:003
320402190,0sleep20-21swapper/223:20:132
131202190,0sleep20-21swapper/220:00:202
117762180,0sleep30-21swapper/322:28:403
24392140,0sleep20-21swapper/221:43:592
242652140,0sleep20-21swapper/222:16:022
161992130,0sleep30-21swapper/321:13:043
15962130,0chrt0-21swapper/200:39:572
2024399103,1cyclictest141rcu_preempt20:10:112
2023799108,1cyclictest12-21ksoftirqd/019:15:010
202379997,1cyclictest29780-21latency_hist19:30:020
202379993,3cyclictest17302-21cron00:30:010
12485290,0sleep10-21swapper/123:27:411
12485290,0sleep10-21swapper/123:27:411
7235280,1sleep310414-21diskmemload22:45:193
202489986,1cyclictest10141-21ssh23:45:243
202419983,4cyclictest275-21systemd-journal23:36:191
202419982,3cyclictest14946-21perf23:10:001
202419981,4cyclictest25011-21awk00:15:001
16483280,1sleep00-21swapper/000:09:490
202489976,1cyclictest34-21ksoftirqd/300:10:003
202489974,2cyclictest504-21dbus-daemon23:41:433
202489974,2cyclictest504-21dbus-daemon22:00:013
202489974,2cyclictest34-21ksoftirqd/321:05:003
202489974,2cyclictest275-21systemd-journal19:33:233
202489973,3cyclictest658-21snmpd20:55:503
202489973,3cyclictest658-21snmpd19:21:013
202489973,3cyclictest658-21snmpd00:39:113
202489973,3cyclictest560-21gdbus22:00:073
202489973,3cyclictest504-21dbus-daemon21:30:003
202489973,3cyclictest504-21dbus-daemon21:30:003
202489973,3cyclictest275-21systemd-journal19:41:243
202489973,1cyclictest0-21swapper/322:37:163
202489973,1cyclictest0-21swapper/300:00:193
202439976,1cyclictest28-21ksoftirqd/221:30:002
202439976,1cyclictest28-21ksoftirqd/221:30:002
202439976,1cyclictest28-21ksoftirqd/200:25:002
202439976,1cyclictest10414-21diskmemload22:50:482
202439973,3cyclictest30184-21ssh00:17:382
202439973,3cyclictest275-21systemd-journal20:25:002
202439973,1cyclictest32008-21dump-pmu-power19:35:012
202439973,1cyclictest141rcu_preempt21:30:172
202439973,1cyclictest141rcu_preempt20:40:102
202439970,4cyclictest29786-21dump-pmu-power19:30:012
202419976,1cyclictest22-21ksoftirqd/120:40:011
202419975,1cyclictest22-21ksoftirqd/100:00:001
202419971,3cyclictest9076-21munin-run19:55:001
202419970,4cyclictest18718-21basename21:15:001
202379973,3cyclictest658-21snmpd23:21:170
202379973,3cyclictest11276-21df_inode21:10:110
202379972,3cyclictest2116-21munin-run19:40:020
202489963,2cyclictest6216-21sh00:22:463
202489963,2cyclictest32063-21sh21:41:483
202489963,2cyclictest25431-21ssh21:18:483
202489963,2cyclictest2155-21uniq20:50:123
202489963,2cyclictest18435-21ssh23:30:543
202489963,2cyclictest15935-21sh22:11:003
202489963,2cyclictest14039-21cat21:50:203
202489963,1cyclictest0-21swapper/322:16:343
202489962,3cyclictest658-21snmpd23:50:413
202489962,3cyclictest658-21snmpd23:37:043
202489962,3cyclictest658-21snmpd22:30:383
202489962,3cyclictest658-21snmpd22:05:273
202489962,3cyclictest658-21snmpd21:45:283
202489962,3cyclictest658-21snmpd21:32:213
202489962,3cyclictest658-21snmpd20:47:023
202489962,3cyclictest658-21snmpd20:42:293
202489962,3cyclictest658-21snmpd20:35:323
202489962,3cyclictest658-21snmpd20:22:523
202489962,3cyclictest658-21snmpd20:16:073
202489962,3cyclictest658-21snmpd19:59:013
202489962,3cyclictest504-21dbus-daemon20:35:003
202489962,3cyclictest31503-21ntp_kernel_err22:40:173
202489962,3cyclictest24267-21head23:15:143
202489962,3cyclictest21153-21cut19:10:153
202489962,3cyclictest19620-21ls00:30:193
202489962,3cyclictest15492-21date22:50:163
202489962,3cyclictest1-21systemd00:10:593
202489962,3cyclictest11850-21expr20:00:133
202489962,1cyclictest0-21swapper/323:28:093
202489962,1cyclictest0-21swapper/323:28:093
202489962,1cyclictest0-21swapper/323:11:043
202489961,3cyclictest275-21systemd-journal21:21:243
202489960,6cyclictest0-21swapper/323:55:303
202489960,6cyclictest0-21swapper/323:20:583
202489960,5cyclictest7993-21needreboot19:50:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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