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2026-05-18 - 11:06
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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
Characteristics of the 100 highest latencies:
System rack1slot1.osadl.org (updated Mon May 18, 2026 00:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
252262209151,47sleep30-21swapper/319:06:313
254462200161,26sleep20-21swapper/219:09:242
251892199162,24sleep10-21swapper/119:06:001
251882198160,24sleep00-21swapper/019:05:590
25601991513,1cyclictest32048-21/usr/sbin/munin22:10:123
25601991512,2cyclictest26767-21latency19:10:163
2558399150,14cyclictest0-21swapper/120:30:121
25601991413,1cyclictest25963-21ssh21:19:083
25601991412,1cyclictest3488-21apt-get19:30:123
25601991412,1cyclictest12171-21timerwakeupswit19:45:213
25601991411,2cyclictest6049-21aten_r1power_cu23:45:133
25601991411,2cyclictest5022-21diskstats20:40:143
2560199133,9cyclictest29892-21ssh23:32:423
2560199133,9cyclictest12700-21ssh00:35:193
2560199133,2cyclictest5649-21ls21:35:003
2560199132,9cyclictest240-21systemd-journal23:27:143
25601991312,1cyclictest0-21swapper/323:17:233
25601991312,1cyclictest0-21swapper/321:59:563
25601991311,1cyclictest22321-21aten_r1power_po22:40:133
25601991311,1cyclictest12282-21pmu-power22:25:193
25601991310,2cyclictest5766-21sleep23:44:593
25601991310,2cyclictest19797-21interrupts21:10:163
2559399130,12cyclictest0-21swapper/223:35:142
2557799130,12cyclictest0-21swapper/021:05:160
2560199129,2cyclictest32502-21df20:30:133
2560199129,2cyclictest0-21swapper/300:30:183
2560199123,1cyclictest8502-21ssh21:37:373
2560199123,1cyclictest8502-21ssh21:37:363
2560199123,1cyclictest31709-21df_inode19:20:143
2560199123,1cyclictest28090-21ssh22:46:253
2560199122,9cyclictest4331-21taskset22:59:503
2560199122,9cyclictest11952-21ssh21:41:443
2560199122,6cyclictest13756-21grep23:55:123
25601991211,1cyclictest25422-21diskstats00:10:153
25601991211,1cyclictest18639-21diskmemload22:21:503
25601991211,1cyclictest18639-21diskmemload21:45:133
25601991211,1cyclictest18639-21diskmemload00:19:163
25601991211,1cyclictest0-21swapper/323:10:203
25601991211,1cyclictest0-21swapper/322:50:203
25601991211,1cyclictest0-21swapper/321:20:133
25601991211,1cyclictest0-21swapper/300:05:203
2559399120,1cyclictest571-21nscd00:31:192
25577991210,1cyclictest9-21ksoftirqd/023:30:000
25577991210,1cyclictest9-21ksoftirqd/022:25:000
2557799121,5cyclictest18216-21perf22:35:000
2557799120,12cyclictest0-21swapper/020:30:130
2560199119,1cyclictest30459-21/usr/sbin/munin20:25:143
2560199118,2cyclictest13828-21irqstats19:50:163
2560199117,3cyclictest0-21swapper/323:07:163
2560199113,4cyclictest9788-21aten2.4-expect23:50:133
2560199113,1cyclictest25878-21/usr/sbin/munin20:15:183
25601991110,1cyclictest18639-21diskmemload21:50:503
25601991110,1cyclictest16964-21apt-get00:00:003
25601991110,1cyclictest0-21swapper/323:39:153
25601991110,1cyclictest0-21swapper/323:22:453
25601991110,1cyclictest0-21swapper/323:00:193
25601991110,1cyclictest0-21swapper/322:30:133
25601991110,1cyclictest0-21swapper/322:17:453
25601991110,1cyclictest0-21swapper/322:00:583
25601991110,1cyclictest0-21swapper/321:00:223
25601991110,1cyclictest0-21swapper/320:50:153
25601991110,1cyclictest0-21swapper/300:27:003
2557799119,1cyclictest9-21ksoftirqd/022:05:010
2557799119,1cyclictest9-21ksoftirqd/021:25:000
25577991110,1cyclictest9-21ksoftirqd/021:35:010
93032100,0sleep00-21swapper/000:30:420
2560199109,1cyclictest2937-21taskset20:35:173
2560199109,1cyclictest0-21swapper/322:35:183
2560199109,1cyclictest0-21swapper/319:25:433
2560199109,1cyclictest0-21swapper/300:24:313
2560199102,1cyclictest31247-21ssh22:08:373
2560199101,1cyclictest18639-21diskmemload21:25:263
2559399100,1cyclictest26093-21/usr/sbin/munin19:10:122
2557799109,1cyclictest9-21ksoftirqd/023:20:010
2557799109,1cyclictest9-21ksoftirqd/021:30:000
2557799109,1cyclictest9-21ksoftirqd/021:05:000
2557799109,1cyclictest9-21ksoftirqd/019:50:000
2557799105,4cyclictest9-21ksoftirqd/021:15:190
256019991,8cyclictest35-21ksoftirqd/321:05:033
256019991,8cyclictest35-21ksoftirqd/320:55:043
256019991,8cyclictest35-21ksoftirqd/320:20:253
256019991,8cyclictest35-21ksoftirqd/320:10:043
256019991,8cyclictest35-21ksoftirqd/320:05:033
256019991,8cyclictest35-21ksoftirqd/319:55:043
256019991,8cyclictest35-21ksoftirqd/319:40:023
256019991,8cyclictest35-21ksoftirqd/319:35:223
256019991,8cyclictest35-21ksoftirqd/319:15:033
256019991,0cyclictest35-21ksoftirqd/320:45:083
256019991,0cyclictest35-21ksoftirqd/320:00:273
255939990,5cyclictest29653-21apt-get20:25:112
255839990,0cyclictest0-21swapper/120:40:111
255779998,1cyclictest9-21ksoftirqd/023:10:000
255779998,1cyclictest9-21ksoftirqd/020:04:590
255779997,1cyclictest9-21ksoftirqd/022:10:000
255779991,8cyclictest18639-21diskmemload00:24:240
255779991,4cyclictest14499-21latency_hist22:30:000
255779990,1cyclictest240-21systemd-journal21:51:120
20317290,0sleep10-21swapper/100:03:271
255939987,1cyclictest28-21ksoftirqd/219:40:182
255939986,1cyclictest61650irq/122-eno122:45:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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