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2026-09-02 - 09:30
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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 Wed Sep 02, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591224195,19phc2sys0-21swapper/319:08:593
46482204169,25sleep20-21swapper/219:06:312
48342202167,23sleep10-21swapper/119:08:551
46462200166,22sleep00-21swapper/019:06:290
2263521620,4sleep0520899cyclictest19:45:000
521199699,16cyclictest20044-21latency_hist22:54:593
521199678,11cyclictest25304-21dpkg23:05:003
521199678,11cyclictest22654-21apt-config22:59:593
5211996613,10cyclictest12986-21turbostat.cron23:45:003
5211996611,16cyclictest5240-21grep00:30:263
5209996631,11cyclictest25-21ksoftirqd/121:59:591
5208996628,3cyclictest9-21ksoftirqd/022:10:130
521199659,10cyclictest30092-21sendmail20:00:013
5211996513,10cyclictest21716-21find19:40:233
5211996512,10cyclictest10872-21fschecks_time22:35:163
5208996527,4cyclictest9-21ksoftirqd/023:55:000
521199648,11cyclictest15559-21cat23:50:013
521199647,16cyclictest0-21swapper/323:15:133
5209996430,9cyclictest25-21ksoftirqd/119:45:181
5209996426,4cyclictest25-21ksoftirqd/120:00:161
5208996423,10cyclictest9-21ksoftirqd/020:30:580
521199639,9cyclictest27918-21/usr/sbin/munin22:05:263
521199637,17cyclictest10946-21irqrtprio19:20:193
5211996312,9cyclictest8769-21fschecks_time23:35:153
5211996312,9cyclictest8769-21fschecks_time23:35:153
5211996312,9cyclictest31407-21grep00:20:153
5211996312,9cyclictest1730-21tail22:15:243
5211996312,16cyclictest3114-21latency_hist23:24:593
5211996312,10cyclictest14907-21sed21:35:263
5208996333,4cyclictest9-21ksoftirqd/023:00:120
5211996212,9cyclictest17161-21sed20:35:253
5211996212,10cyclictest26044-21cut22:00:173
5211996212,10cyclictest15142-21cat19:30:013
5209996232,4cyclictest25-21ksoftirqd/123:40:261
5209996231,4cyclictest25-21ksoftirqd/121:40:011
5209996230,4cyclictest25-21ksoftirqd/119:15:271
5209996224,11cyclictest25-21ksoftirqd/120:40:191
5208996232,4cyclictest9-21ksoftirqd/023:15:010
5208996221,10cyclictest9-21ksoftirqd/019:55:010
521199618,9cyclictest0-21swapper/321:30:253
521199618,10cyclictest0-21swapper/320:45:203
521199617,10cyclictest22340-21unixbench_singl21:50:273
521199616,20cyclictest0-21swapper/323:55:193
521199616,18cyclictest0-21swapper/323:25:173
5211996112,9cyclictest26361-21ls19:50:203
5209996131,4cyclictest25-21ksoftirqd/123:50:141
5209996131,4cyclictest25-21ksoftirqd/100:35:191
5209996130,4cyclictest25-21ksoftirqd/121:15:161
5209996129,4cyclictest25-21ksoftirqd/100:20:131
5209996122,3cyclictest25-21ksoftirqd/122:50:261
5208996132,4cyclictest9-21ksoftirqd/020:50:210
5208996132,4cyclictest9-21ksoftirqd/020:50:210
5208996131,4cyclictest9-21ksoftirqd/021:25:160
521199608,11cyclictest8625-21irqrtprio22:30:213
521199606,18cyclictest0-21swapper/300:25:183
5211996012,15cyclictest30371-21gpgv23:15:003
5211996011,9cyclictest6032-21sed19:10:203
5209996030,4cyclictest25-21ksoftirqd/123:56:371
5209996030,3cyclictest25-21ksoftirqd/100:25:231
5209996028,4cyclictest25-21ksoftirqd/122:20:011
5209996027,3cyclictest25-21ksoftirqd/121:10:121
5208996031,4cyclictest9-21ksoftirqd/022:30:240
5211995911,9cyclictest29442-21latency00:15:203
5211995911,8cyclictest26140-21cstates00:10:143
5211995910,9cyclictest17906-21date21:45:003
5209995928,4cyclictest25-21ksoftirqd/122:30:141
5209995928,4cyclictest25-21ksoftirqd/121:05:151
5209995925,3cyclictest25-21ksoftirqd/119:35:261
5208995928,3cyclictest9-21ksoftirqd/022:05:160
5208995921,4cyclictest9-21ksoftirqd/019:35:210
521199589,10cyclictest4113-21irqrtprio21:15:223
521199587,16cyclictest0-21swapper/320:25:203
521199587,10cyclictest0-21swapper/321:00:233
521199586,16cyclictest0-21swapper/322:40:253
5211995812,9cyclictest5793-21cstates22:25:153
5211995811,9cyclictest24121-21cat20:50:193
5211995811,9cyclictest24121-21cat20:50:183
5211995810,9cyclictest24165-21cut00:05:203
5211995810,9cyclictest24165-21cut00:05:193
5209995828,4cyclictest25-21ksoftirqd/123:05:181
5209995828,4cyclictest25-21ksoftirqd/123:05:181
5209995825,11cyclictest25-21ksoftirqd/120:50:211
5209995825,11cyclictest25-21ksoftirqd/120:50:201
5209995816,4cyclictest25-21ksoftirqd/122:04:591
5208995824,4cyclictest9-21ksoftirqd/023:25:170
521199579,16cyclictest15341-21/usr/sbin/munin19:30:173
521199577,17cyclictest0-21swapper/300:00:203
5211995711,15cyclictest18756-21if_enp4s021:45:173
5211995710,14cyclictest0-21swapper/323:05:153
5211995710,14cyclictest0-21swapper/323:05:153
5209995729,4cyclictest25-21ksoftirqd/119:40:131
5209995729,3cyclictest25-21ksoftirqd/120:20:181
5209995728,3cyclictest25-21ksoftirqd/119:10:141
5209995726,4cyclictest25-21ksoftirqd/120:15:141
5209995724,7cyclictest25-21ksoftirqd/121:25:121
5208995726,4cyclictest9-21ksoftirqd/022:20:190
521199569,16cyclictest8565-21df_abs21:25:133
521199567,9cyclictest26054-21cstates20:55:133
5211995610,16cyclictest17970-21sed23:55:003
5209995628,4cyclictest25-21ksoftirqd/122:45:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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