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2026-04-25 - 22:37
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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 rackdslot3.osadl.org (updated Sat Apr 25, 2026 12:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491206172,23phc2sys0-21swapper/307:05:083
229932205172,22sleep20-21swapper/207:07:052
232032201168,22sleep00-21swapper/007:09:480
231772200167,22sleep10-21swapper/107:09:281
1581021540,5sleep32351799cyclictest08:00:163
38021470,4sleep12351599cyclictest11:55:271
179021360,4sleep02351499cyclictest12:00:140
108592650,7sleep32351799cyclictest08:55:233
23515996326,10cyclictest25-21ksoftirqd/111:50:201
23515996026,9cyclictest25-21ksoftirqd/109:25:001
98792590,2sleep20-21swapper/212:15:242
131072580,3sleep313103-21ls12:25:013
2351499544,11cyclictest1913-21grep09:45:180
306042530,2sleep10-21swapper/107:25:001
2351499531,17cyclictest15531-21/usr/sbin/munin10:15:240
2351599505,6cyclictest25-21ksoftirqd/108:35:201
2351599501,5cyclictest25-21ksoftirqd/110:15:131
2351599493,6cyclictest25-21ksoftirqd/112:30:121
23515994930,8cyclictest25-21ksoftirqd/111:25:001
2351599492,5cyclictest25-21ksoftirqd/111:05:151
2351599491,6cyclictest25-21ksoftirqd/108:55:281
2351499494,7cyclictest14737-21awk07:55:290
2351599486,5cyclictest25-21ksoftirqd/112:10:231
2351599485,8cyclictest25-21ksoftirqd/111:00:111
2351599485,10cyclictest25-21ksoftirqd/107:35:151
2351599484,8cyclictest25-21ksoftirqd/109:30:151
2351599484,4cyclictest25-21ksoftirqd/109:15:191
23515994828,11cyclictest25-21ksoftirqd/107:50:171
23515994824,10cyclictest25-21ksoftirqd/107:45:281
2351499488,2cyclictest9-21ksoftirqd/011:10:100
2351499488,2cyclictest9-21ksoftirqd/009:27:570
2351599476,5cyclictest25-21ksoftirqd/112:35:201
2351599475,8cyclictest25-21ksoftirqd/109:35:241
2351599474,9cyclictest25-21ksoftirqd/110:30:161
2351599474,8cyclictest25-21ksoftirqd/110:05:161
2351599473,8cyclictest25-21ksoftirqd/109:50:191
2351599473,6cyclictest25-21ksoftirqd/110:40:141
23515994727,10cyclictest25-21ksoftirqd/112:15:181
2351599472,5cyclictest25-21ksoftirqd/112:00:131
2351499479,6cyclictest9-21ksoftirqd/010:47:030
2351499479,2cyclictest9-21ksoftirqd/011:07:180
2351499475,5cyclictest9-21ksoftirqd/012:39:390
2351499474,6cyclictest25930-21if_enp4s008:20:190
2351599464,9cyclictest25-21ksoftirqd/107:15:251
2351599463,7cyclictest25-21ksoftirqd/107:55:221
23515994632,4cyclictest25-21ksoftirqd/111:15:141
23515994628,7cyclictest25-21ksoftirqd/107:30:181
23515994628,7cyclictest25-21ksoftirqd/107:30:181
2351599462,5cyclictest25-21ksoftirqd/110:15:001
2351599462,5cyclictest25-21ksoftirqd/108:05:161
23515994611,6cyclictest25-21ksoftirqd/109:03:391
23515994611,6cyclictest25-21ksoftirqd/109:03:391
2351499467,3cyclictest9-21ksoftirqd/011:41:150
2351499465,5cyclictest9-21ksoftirqd/008:00:180
2351499464,5cyclictest32514-21/usr/sbin/munin11:55:220
2351499462,7cyclictest30242-21mailstats11:50:250
2351599456,5cyclictest25-21ksoftirqd/108:12:331
2351599454,4cyclictest25-21ksoftirqd/109:40:171
2351599452,6cyclictest25-21ksoftirqd/110:00:011
2351599452,6cyclictest25-21ksoftirqd/109:10:181
2351599451,5cyclictest25-21ksoftirqd/111:35:141
2351599451,5cyclictest25-21ksoftirqd/111:10:141
2351599450,5cyclictest25-21ksoftirqd/110:45:121
2351599450,5cyclictest25-21ksoftirqd/109:24:591
2351499457,3cyclictest9-21ksoftirqd/012:26:240
2351499457,2cyclictest9-21ksoftirqd/007:48:190
2351499456,5cyclictest9-21ksoftirqd/010:25:510
2351499456,5cyclictest9-21ksoftirqd/007:31:240
2351499456,5cyclictest9-21ksoftirqd/007:31:240
2351499453,7cyclictest28602-21/usr/sbin/munin07:20:140
2351499450,11cyclictest7055-21grep07:40:220
23517994439,3cyclictest4370-21ls11:00:003
23516994417,2cyclictest33-21ksoftirqd/208:00:252
2351599446,5cyclictest25-21ksoftirqd/112:25:171
2351599443,6cyclictest25-21ksoftirqd/108:25:231
2351599443,6cyclictest25-21ksoftirqd/108:05:011
2351599443,6cyclictest25-21ksoftirqd/107:40:151
2351599443,5cyclictest25-21ksoftirqd/109:45:251
2351599442,5cyclictest25-21ksoftirqd/108:45:261
2351599441,6cyclictest25-21ksoftirqd/110:55:161
2351499448,2cyclictest9-21ksoftirqd/010:22:240
2351499447,4cyclictest9-21ksoftirqd/007:27:560
2351499447,3cyclictest9-21ksoftirqd/009:36:420
2351499445,5cyclictest9-21ksoftirqd/009:13:580
2351499443,5cyclictest9-21ksoftirqd/009:33:480
139391440,0ptp4l401ktimersoftd/308:30:223
23517994336,4cyclictest26232-21cron09:30:003
2351599433,6cyclictest25-21ksoftirqd/110:20:201
2351599432,5cyclictest25-21ksoftirqd/110:03:441
2351599432,5cyclictest25-21ksoftirqd/108:20:371
2351599432,5cyclictest25-21ksoftirqd/107:25:251
2351599432,5cyclictest25166-21gpgv08:20:011
2351599431,5cyclictest25-21ksoftirqd/110:50:151
2351499439,2cyclictest9-21ksoftirqd/008:30:030
2351499438,7cyclictest9-21ksoftirqd/011:47:570
2351499438,3cyclictest9-21ksoftirqd/011:38:550
2351499437,5cyclictest9-21ksoftirqd/009:40:240
2351499436,5cyclictest9-21ksoftirqd/012:14:330
2351499436,3cyclictest9-21ksoftirqd/011:31:450
2351499435,5cyclictest9-21ksoftirqd/012:19:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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