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2026-05-12 - 20:10
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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 rackdslot1.osadl.org (updated Tue May 12, 2026 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491720,10ptp4l16691-21meminfo07:05:210
167472680,7sleep30-21swapper/307:05:223
18235996531,6cyclictest9-21ksoftirqd/010:40:010
18235996329,5cyclictest9-21ksoftirqd/007:55:140
18235996328,5cyclictest9-21ksoftirqd/009:45:000
134491630,5ptp4l0-21swapper/111:20:191
18235996227,5cyclictest9-21ksoftirqd/008:40:270
134491620,5ptp4l0-21swapper/011:40:270
18235996122,9cyclictest9-21ksoftirqd/012:35:000
134491610,4ptp4l0-21swapper/208:40:242
134491610,19ptp4l30282-21/usr/sbin/munin11:05:293
18235996031,4cyclictest9-21ksoftirqd/009:25:190
18235996031,4cyclictest9-21ksoftirqd/009:25:190
18235996028,5cyclictest9-21ksoftirqd/008:50:140
18235996027,4cyclictest9-21ksoftirqd/008:36:560
18235996027,3cyclictest9-21ksoftirqd/009:09:290
134491600,4ptp4l0-21swapper/210:12:372
18235995931,5cyclictest9-21ksoftirqd/009:49:590
18235995926,8cyclictest9-21ksoftirqd/012:05:220
18235995926,3cyclictest9-21ksoftirqd/012:35:080
18235995922,5cyclictest9-21ksoftirqd/011:05:010
22472580,2sleep12250-21cstates07:45:151
18235995828,5cyclictest9-21ksoftirqd/012:15:020
134491580,4ptp4l0-21swapper/210:00:142
134491580,4ptp4l0-21swapper/112:25:201
230312570,5sleep123035-21sendmail09:40:011
1823599575,8cyclictest9-21ksoftirqd/012:25:120
18235995723,6cyclictest9-21ksoftirqd/007:50:000
18235995721,6cyclictest9-21ksoftirqd/011:36:370
134491570,4ptp4l0-21swapper/108:55:281
1823599566,9cyclictest23007-21sort09:40:010
18235995625,2cyclictest9-21ksoftirqd/008:49:010
134491560,4ptp4l0-21swapper/311:50:303
134491560,3ptp4l18165-21apt-get09:30:031
134491560,3ptp4l0-21swapper/010:50:290
18235995528,3cyclictest9-21ksoftirqd/007:43:530
18235995526,2cyclictest9-21ksoftirqd/008:07:020
134491550,4ptp4l0-21swapper/112:13:171
134491550,4ptp4l0-21swapper/107:30:321
134491550,3ptp4l0-21swapper/308:55:233
1823599548,6cyclictest27289-21ls07:30:000
18235995424,3cyclictest9-21ksoftirqd/010:59:530
134491540,4ptp4l0-21swapper/210:07:142
134491540,4ptp4l0-21swapper/011:30:270
134491540,3ptp4l0-21swapper/010:45:260
1823599535,5cyclictest9-21ksoftirqd/009:20:190
1823599535,5cyclictest9-21ksoftirqd/007:35:010
1823599533,9cyclictest9-21ksoftirqd/010:40:170
18235995330,3cyclictest9-21ksoftirqd/011:13:530
18235995326,6cyclictest9-21ksoftirqd/011:21:050
134491530,4ptp4l0-21swapper/308:28:533
134491530,4ptp4l0-21swapper/210:25:202
134491530,4ptp4l0-21swapper/107:10:121
18235995227,3cyclictest9-21ksoftirqd/008:11:490
18235995227,3cyclictest9-21ksoftirqd/008:03:540
18235995227,3cyclictest9-21ksoftirqd/008:03:540
18235995224,6cyclictest9-21ksoftirqd/012:00:530
1823599520,6cyclictest9-21ksoftirqd/011:50:160
134491520,4ptp4l0-21swapper/109:01:091
134491520,4ptp4l0-21swapper/108:02:311
134491520,4ptp4l0-21swapper/108:02:311
134491520,3ptp4l0-21swapper/310:15:353
134491520,3ptp4l0-21swapper/211:00:182
134491520,3ptp4l0-21swapper/108:47:241
1823599513,8cyclictest9-21ksoftirqd/009:15:190
1823599512,6cyclictest9-21ksoftirqd/011:49:590
1823599512,6cyclictest9-21ksoftirqd/010:15:280
18235995123,5cyclictest9-21ksoftirqd/007:35:310
18235995123,2cyclictest9-21ksoftirqd/008:34:390
18235995122,3cyclictest9-21ksoftirqd/008:59:520
134491510,3ptp4l0-21swapper/310:04:403
134491510,3ptp4l0-21swapper/308:15:183
134491510,12ptp4l0-21swapper/307:20:223
134491510,11ptp4l16644-21/usr/sbin/munin07:05:201
1823599504,5cyclictest9-21ksoftirqd/010:30:010
18235995023,7cyclictest9-21ksoftirqd/012:20:150
18235995023,3cyclictest9-21ksoftirqd/007:17:580
1823599500,6cyclictest9-21ksoftirqd/011:25:190
1823599500,5cyclictest9-21ksoftirqd/010:10:160
134491500,4ptp4l0-21swapper/209:55:182
134491500,4ptp4l0-21swapper/209:55:182
134491500,4ptp4l0-21swapper/111:29:521
134491500,4ptp4l0-21swapper/111:17:571
134491500,3ptp4l0-21swapper/212:14:432
134491500,3ptp4l0-21swapper/109:06:521
134491500,3ptp4l0-21swapper/108:33:221
134491500,12ptp4l17795-21apt-get07:10:010
1823599494,5cyclictest9-21ksoftirqd/009:55:280
1823599494,5cyclictest9-21ksoftirqd/009:55:280
1823599493,8cyclictest9-21ksoftirqd/007:50:200
1823599492,8cyclictest9-21ksoftirqd/010:05:000
134491490,4ptp4l0-21swapper/307:45:453
134491490,4ptp4l0-21swapper/112:04:371
134491490,4ptp4l0-21swapper/111:50:121
134491490,4ptp4l0-21swapper/111:41:281
134491490,4ptp4l0-21swapper/107:43:201
134491490,3ptp4l0-21swapper/309:45:193
134491490,3ptp4l0-21swapper/212:30:492
134491490,3ptp4l0-21swapper/110:13:581
1823599484,5cyclictest9-21ksoftirqd/011:15:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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