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2026-05-12 - 09:24
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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 rackdslot4.osadl.org (updated Tue May 12, 2026 00:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
159142204170,23sleep30-21swapper/319:07:443
160242202168,23sleep10-21swapper/119:09:111
159432202169,22sleep20-21swapper/219:08:082
158262201166,23sleep00-21swapper/019:06:410
1638499660,30cyclictest21317-21date19:20:002
138491640,50ptp4l0-21swapper/319:10:013
1638499611,28cyclictest0-21swapper/219:22:592
1638499601,22cyclictest27557-21missed_timers20:35:222
199892550,4sleep10-21swapper/119:15:201
1638299538,9cyclictest4164-21expr22:00:150
1638299527,14cyclictest17406-21irqstats19:10:190
1638299527,13cyclictest21800-21df_inode19:20:140
1638299526,11cyclictest17838-21cat00:35:250
1638299507,13cyclictest4612-21iostat_ios00:10:180
1638299507,13cyclictest32293-21memory22:55:210
93172490,1sleep19316-21df23:15:131
1638299497,14cyclictest14469-21perl23:25:170
1638299477,8cyclictest9276-21df21:05:150
16385994612,4cyclictest25701-21sshd21:37:423
1638299466,13cyclictest5026-21memory20:55:210
1638299456,7cyclictest9547-21iostat_ios00:20:180
1638499441,22cyclictest0-21swapper/200:07:062
1638299447,8cyclictest32456-21meminfo20:45:200
1638299447,7cyclictest6911-21df_inode21:00:150
1638299447,7cyclictest4683-21iostat19:50:190
1638299447,7cyclictest28083-21users19:30:260
1638299447,7cyclictest24186-21df22:40:130
1638299447,7cyclictest10162-21irqstats20:00:190
1638299446,7cyclictest21873-21df20:25:140
1638299446,7cyclictest19320-21df_inode19:15:130
1638499430,40cyclictest211882sleep220:24:052
1638299437,7cyclictest14345-21hddtemp_smartct22:20:150
1638299436,7cyclictest430-21users21:50:250
1638299436,7cyclictest18406-21users20:15:270
1638299436,7cyclictest11866-21hddtemp_smartct00:25:170
1638299436,6cyclictest22005-21iostat_ios23:40:190
1638299426,13cyclictest28251-21users20:35:280
138491420,0ptp4l401ktimersoftd/321:20:173
1638599403,34cyclictest16060-21latency_hist21:20:013
1638599403,34cyclictest16060-21latency_hist21:20:013
16383994034,3cyclictest16096-21cron23:30:001
1638299406,7cyclictest1865-21df_inode20:50:150
1638299406,16cyclictest29622-21iostat_ios20:40:180
16383993915,4cyclictest8552-21cron00:20:011
16385993832,4cyclictest41-21ksoftirqd/322:40:003
16384993831,4cyclictest33-21ksoftirqd/200:29:392
1638499381,28cyclictest5435-21systemctl23:05:242
1638499380,21cyclictest17601-21ptp4l-jitter00:35:232
16383993832,4cyclictest25-21ksoftirqd/120:10:001
138491380,0ptp4l401ktimersoftd/323:35:243
16385993731,4cyclictest41-21ksoftirqd/323:48:523
16384993731,4cyclictest33-21ksoftirqd/222:03:542
16384993731,4cyclictest33-21ksoftirqd/221:44:482
16384993730,3cyclictest33-21ksoftirqd/221:37:592
1638299376,14cyclictest19762-21irqstats21:25:190
1638299376,13cyclictest30473-21users23:55:280
50798360,9rtkit-daemon0-21swapper/120:29:521
16385993631,3cyclictest41-21ksoftirqd/321:43:373
16385993630,4cyclictest41-21ksoftirqd/321:08:263
16385993630,4cyclictest41-21ksoftirqd/320:18:403
16385993630,4cyclictest41-21ksoftirqd/320:06:293
16385993622,11cyclictest41-21ksoftirqd/321:55:373
16385993613,20cyclictest9149-21/usr/sbin/munin20:00:153
16384993631,3cyclictest33-21ksoftirqd/219:30:502
16384993630,4cyclictest33-21ksoftirqd/221:17:002
16384993630,4cyclictest33-21ksoftirqd/221:16:592
16384993630,4cyclictest33-21ksoftirqd/220:33:122
16384993630,4cyclictest33-21ksoftirqd/219:56:532
16384993629,4cyclictest33-21ksoftirqd/221:00:072
1638499360,22cyclictest8842sleep219:44:012
16383993630,4cyclictest25-21ksoftirqd/123:57:171
16383993630,4cyclictest25-21ksoftirqd/119:21:341
1638399360,2cyclictest121rcu_preempt20:44:451
16382993631,3cyclictest9-21ksoftirqd/021:14:540
16382993631,3cyclictest9-21ksoftirqd/020:30:370
16382993630,4cyclictest9-21ksoftirqd/023:19:020
16382993630,4cyclictest9-21ksoftirqd/022:34:520
1638599359,3cyclictest11768-21fschecks_count22:15:143
1638599359,3cyclictest11768-21fschecks_count22:15:143
16385993530,3cyclictest41-21ksoftirqd/319:44:363
16385993530,3cyclictest41-21ksoftirqd/319:15:113
1638599352,9cyclictest1319-21snmpd23:15:113
16385993529,4cyclictest41-21ksoftirqd/323:34:523
16385993529,4cyclictest41-21ksoftirqd/322:01:103
16385993529,4cyclictest41-21ksoftirqd/321:46:583
16385993514,19cyclictest954-21gpgv21:55:013
16385993512,3cyclictest28592-21date19:35:013
16385993512,3cyclictest21653-21ls19:20:133
16385993511,3cyclictest22514-21grep20:25:203
16384993530,3cyclictest33-21ksoftirqd/220:53:162
16384993529,4cyclictest33-21ksoftirqd/223:53:182
16384993529,4cyclictest33-21ksoftirqd/223:34:202
16384993529,4cyclictest33-21ksoftirqd/221:13:352
16384993529,4cyclictest33-21ksoftirqd/220:43:392
16384993529,4cyclictest33-21ksoftirqd/200:18:202
16384993529,3cyclictest33-21ksoftirqd/222:53:162
16384993528,4cyclictest33-21ksoftirqd/220:47:592
1638499350,21cyclictest25003-21awk23:45:232
16383993529,4cyclictest25-21ksoftirqd/123:48:381
16383993529,4cyclictest25-21ksoftirqd/122:05:371
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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