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2026-07-24 - 00:32
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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 Thu Jul 23, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591230162,23phc2sys0-21swapper/307:08:103
19662201167,22sleep20-21swapper/207:05:492
21472199165,23sleep10-21swapper/107:08:081
21162197165,22sleep00-21swapper/007:07:430
264299730,31cyclictest7332-21latency_hist08:25:013
264299680,22cyclictest635-21cut12:30:163
264299680,20cyclictest13428-21cut10:45:183
264299670,23cyclictest5528-21awk11:35:183
264299670,22cyclictest8055-21perl09:30:163
264299670,22cyclictest29565-21latency_hist11:20:013
264299661,22cyclictest10547-21sed07:25:143
264299661,22cyclictest10547-21sed07:25:143
264299660,23cyclictest31383-21timerandwakeup09:10:263
264299651,21cyclictest22367-21cstates12:10:153
264299650,23cyclictest17989-21cut10:55:153
264299640,29cyclictest20683-21cat12:05:203
264299640,26cyclictest11837-21grep08:30:273
264299640,24cyclictest16530-21sed10:50:243
264299640,21cyclictest14847-21date08:40:003
264299631,23cyclictest30932-21missed_timers11:20:213
264299630,21cyclictest3573-21uname09:20:183
264299630,21cyclictest3573-21uname09:20:183
2641996330,4cyclictest33-21ksoftirqd/208:30:152
2639996328,6cyclictest9-21ksoftirqd/008:35:140
264299621,22cyclictest18798-21taskset07:40:193
264299620,22cyclictest24773-21date09:00:013
2641996231,10cyclictest33-21ksoftirqd/210:30:222
2641996227,7cyclictest33-21ksoftirqd/210:20:012
2639996231,4cyclictest9-21ksoftirqd/009:05:010
2639996231,4cyclictest9-21ksoftirqd/007:20:000
264299611,26cyclictest18863-21ps09:50:233
264299610,27cyclictest28735-21chrt08:00:213
264299610,22cyclictest25481-21idleruntime09:00:173
2641996127,11cyclictest33-21ksoftirqd/209:30:142
264299600,26cyclictest18615-21grep08:45:203
2639996030,5cyclictest9-21ksoftirqd/008:45:260
2639996028,4cyclictest9-21ksoftirqd/011:04:590
2639996024,6cyclictest9-21ksoftirqd/011:15:150
113822600,2sleep30-21swapper/310:40:243
264299591,32cyclictest26178-21awk12:15:253
2639995931,3cyclictest9-21ksoftirqd/012:15:130
2639995925,7cyclictest9-21ksoftirqd/008:20:120
2639995924,7cyclictest9-21ksoftirqd/009:05:150
2639995923,7cyclictest9-21ksoftirqd/012:30:120
2639995923,6cyclictest9-21ksoftirqd/011:10:130
2639995921,5cyclictest9-21ksoftirqd/007:35:000
2639995920,8cyclictest9-21ksoftirqd/010:50:130
264299581,22cyclictest1842-21chrt10:20:463
264299580,23cyclictest7325-21acpi11:40:123
2641995831,7cyclictest33-21ksoftirqd/208:50:012
2641995827,5cyclictest33-21ksoftirqd/209:40:252
2641995825,6cyclictest33-21ksoftirqd/211:04:592
2641995825,4cyclictest33-21ksoftirqd/211:40:142
2639995830,3cyclictest9-21ksoftirqd/012:00:160
2639995827,6cyclictest9-21ksoftirqd/007:35:020
2639995824,6cyclictest9-21ksoftirqd/010:30:120
2639995823,6cyclictest9-21ksoftirqd/007:40:140
2639995821,6cyclictest9-21ksoftirqd/008:00:000
2639995818,7cyclictest9-21ksoftirqd/010:25:140
264299571,19cyclictest25415-21fschecks_time11:10:153
264299570,23cyclictest5158-21dpkg10:30:113
264299570,20cyclictest20101-21cpuspeed_turbos09:55:113
264299570,19cyclictest21248-21ps08:50:233
2641995729,4cyclictest33-21ksoftirqd/207:55:242
2641995727,4cyclictest33-21ksoftirqd/207:20:172
2641995724,9cyclictest33-21ksoftirqd/210:10:272
2641995721,10cyclictest33-21ksoftirqd/211:35:122
2639995731,5cyclictest9-21ksoftirqd/008:10:270
2639995728,7cyclictest9-21ksoftirqd/008:05:000
2639995728,3cyclictest9-21ksoftirqd/009:50:250
2639995724,6cyclictest9-21ksoftirqd/011:34:590
2639995724,6cyclictest9-21ksoftirqd/010:20:160
2639995722,6cyclictest9-21ksoftirqd/008:25:160
2639995722,6cyclictest9-21ksoftirqd/008:05:130
2639995720,4cyclictest9-21ksoftirqd/009:20:190
2639995720,4cyclictest9-21ksoftirqd/009:20:190
264299561,22cyclictest20646-21iostat_ios11:00:183
2641995630,10cyclictest33-21ksoftirqd/209:55:172
2641995627,10cyclictest33-21ksoftirqd/208:55:232
2641995625,9cyclictest33-21ksoftirqd/211:57:252
2641995624,8cyclictest33-21ksoftirqd/210:25:182
2641995624,10cyclictest33-21ksoftirqd/212:20:252
2639995627,8cyclictest9-21ksoftirqd/011:05:240
2639995627,4cyclictest9-21ksoftirqd/009:35:220
2639995627,4cyclictest9-21ksoftirqd/007:10:150
2639995624,5cyclictest9-21ksoftirqd/007:45:150
2639995622,5cyclictest9-21ksoftirqd/007:50:140
2639995618,6cyclictest9-21ksoftirqd/009:25:180
2639995618,5cyclictest9-21ksoftirqd/008:40:270
264299550,22cyclictest11923-21chrt11:49:083
2641995524,4cyclictest33-21ksoftirqd/211:15:132
2641995521,5cyclictest33-21ksoftirqd/207:50:242
2639995530,6cyclictest9-21ksoftirqd/011:50:220
2639995525,5cyclictest9-21ksoftirqd/011:45:010
2639995521,3cyclictest9-21ksoftirqd/011:20:170
2639995521,3cyclictest9-21ksoftirqd/010:00:160
2639995520,3cyclictest9-21ksoftirqd/011:45:220
2639995520,3cyclictest9-21ksoftirqd/010:15:190
2639995518,5cyclictest9-21ksoftirqd/012:20:130
2639995518,5cyclictest9-21ksoftirqd/012:05:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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