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2026-07-20 - 18:55
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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 Mon Jul 20, 2026 12:45:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
321602206171,23sleep30-21swapper/307:06:223
321602206171,23sleep30-21swapper/307:06:223
322992203170,22sleep20-21swapper/207:08:092
322992203170,22sleep20-21swapper/207:08:092
321062203170,22sleep10-21swapper/107:05:391
321062203170,22sleep10-21swapper/107:05:391
322972202168,22sleep00-21swapper/007:08:070
322972202168,22sleep00-21swapper/007:08:070
139391690,1ptp4l1269-21irqstats07:10:193
3274499573,8cyclictest12548-21awk09:50:002
3274499571,17cyclictest0-21swapper/212:23:282
139391540,1ptp4l401ktimersoftd/307:49:263
152492510,7sleep03274299cyclictest07:40:160
3274499482,16cyclictest15738-21/usr/sbin/munin09:55:182
3274499480,15cyclictest6284-21ls07:20:222
3274499471,16cyclictest32655-21/usr/sbin/munin11:40:222
3274499471,14cyclictest27067-21apt-get08:05:112
3274499463,18cyclictest29762-21awk10:25:172
3274499461,7cyclictest28483-21ls10:20:262
3274499450,8cyclictest19441-21ls11:10:212
32744994314,27cyclictest0-21swapper/207:30:242
32744994211,28cyclictest10177-21phc2sys-jitter08:35:232
139391420,0ptp4l401ktimersoftd/308:09:443
32745994129,10cyclictest41-21ksoftirqd/308:16:223
3274499411,7cyclictest28841-21irqstats11:30:222
139391410,0ptp4l401ktimersoftd/307:42:533
32744994023,14cyclictest33-21ksoftirqd/207:50:002
32743994034,4cyclictest25-21ksoftirqd/112:10:011
32745993933,4cyclictest1300-21snmpd08:02:403
3274499392,9cyclictest2976-21/usr/sbin/munin09:30:162
3274499391,7cyclictest5742-21diskstats09:35:162
32744993912,25cyclictest24989-21kworker/2:009:10:232
32743993934,3cyclictest25-21ksoftirqd/112:30:001
32743993932,4cyclictest26437-21ls12:35:001
139391390,15ptp4l401ktimersoftd/312:00:123
139391390,0ptp4l401ktimersoftd/312:10:163
3274499382,16cyclictest6497-21/usr/sbin/munin10:45:222
3274499381,7cyclictest18526-21meminfo10:00:202
3274499381,15cyclictest13753-21/usr/sbin/munin08:45:152
139391380,0ptp4l401ktimersoftd/308:42:593
3274499371,7cyclictest3178-21df_inode07:15:162
32743993731,4cyclictest25-21ksoftirqd/112:39:331
32743993731,4cyclictest25-21ksoftirqd/109:14:051
32745993631,3cyclictest19617-21cron10:05:013
32745993630,4cyclictest41-21ksoftirqd/312:30:393
32744993630,3cyclictest33-21ksoftirqd/209:05:122
3274499360,8cyclictest13762-21ls09:50:192
32743993631,3cyclictest25-21ksoftirqd/110:30:001
32743993631,3cyclictest25-21ksoftirqd/109:23:111
32743993630,4cyclictest25-21ksoftirqd/111:53:221
32743993630,4cyclictest25-21ksoftirqd/109:36:431
32745993529,4cyclictest41-21ksoftirqd/311:55:373
32745993529,4cyclictest41-21ksoftirqd/311:30:383
32745993529,4cyclictest41-21ksoftirqd/311:11:283
32745993529,4cyclictest41-21ksoftirqd/310:54:323
32745993529,4cyclictest41-21ksoftirqd/309:48:173
32743993530,3cyclictest25-21ksoftirqd/111:49:591
32743993529,4cyclictest25-21ksoftirqd/111:05:081
32743993529,4cyclictest25-21ksoftirqd/110:14:421
32743993529,4cyclictest25-21ksoftirqd/110:06:481
32743993529,4cyclictest25-21ksoftirqd/109:06:421
32743993529,4cyclictest25-21ksoftirqd/108:29:441
32743993529,4cyclictest25-21ksoftirqd/107:45:511
32742993530,3cyclictest9-21ksoftirqd/009:50:000
32742993529,4cyclictest9-21ksoftirqd/008:11:450
32745993428,4cyclictest41-21ksoftirqd/311:27:413
32745993428,4cyclictest41-21ksoftirqd/308:55:493
32745993428,4cyclictest41-21ksoftirqd/307:24:063
32744993429,3cyclictest33-21ksoftirqd/211:30:012
32744993429,3cyclictest33-21ksoftirqd/207:42:412
32744993428,4cyclictest33-21ksoftirqd/211:09:562
32744993428,4cyclictest33-21ksoftirqd/209:20:402
32743993429,3cyclictest25-21ksoftirqd/110:50:191
32743993429,3cyclictest25-21ksoftirqd/109:05:001
32743993429,3cyclictest25-21ksoftirqd/108:24:471
32743993429,3cyclictest25-21ksoftirqd/108:19:441
32743993428,4cyclictest25-21ksoftirqd/111:41:351
32743993428,4cyclictest25-21ksoftirqd/111:17:401
32743993428,4cyclictest25-21ksoftirqd/110:57:271
32743993428,4cyclictest25-21ksoftirqd/110:43:591
32743993427,4cyclictest25-21ksoftirqd/112:12:251
32742993428,4cyclictest9-21ksoftirqd/010:24:440
32742993428,4cyclictest9-21ksoftirqd/008:57:190
139391340,0ptp4l401ktimersoftd/307:15:593
32745993327,4cyclictest41-21ksoftirqd/308:34:353
32745993327,3cyclictest41-21ksoftirqd/311:08:123
32744993328,3cyclictest33-21ksoftirqd/209:15:132
32744993328,3cyclictest33-21ksoftirqd/208:19:062
32744993327,4cyclictest33-21ksoftirqd/211:24:442
32744993327,4cyclictest33-21ksoftirqd/210:35:422
32744993327,4cyclictest33-21ksoftirqd/210:18:492
32744993327,4cyclictest33-21ksoftirqd/209:04:152
32744993327,4cyclictest33-21ksoftirqd/208:04:252
32744993327,4cyclictest33-21ksoftirqd/207:59:122
32744993327,4cyclictest33-21ksoftirqd/207:59:122
32743993327,4cyclictest25-21ksoftirqd/111:36:251
32743993327,4cyclictest25-21ksoftirqd/110:04:471
32743993327,4cyclictest25-21ksoftirqd/108:56:191
32743993327,4cyclictest25-21ksoftirqd/108:07:291
32743993326,5cyclictest25-21ksoftirqd/107:40:491
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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