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2026-08-21 - 18:05
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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 376 highest latencies:
System rackdslot3.osadl.org (updated Fri Aug 21, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491207163,33phc2sys0-21swapper/307:07:243
146962203170,22sleep10-21swapper/107:06:561
128082202168,23sleep20-21swapper/207:05:072
128012201168,22sleep00-21swapper/007:05:010
1393911150,1ptp4l24569-21apt07:30:013
139391800,2ptp4l391rcuc/311:35:213
139391800,1ptp4l391rcuc/312:10:223
15234996934,7cyclictest33-21ksoftirqd/210:30:002
15234996930,7cyclictest33-21ksoftirqd/211:55:262
15234996733,5cyclictest33-21ksoftirqd/210:35:002
15234996632,6cyclictest33-21ksoftirqd/208:00:002
15234996628,7cyclictest33-21ksoftirqd/211:15:242
15234996532,5cyclictest33-21ksoftirqd/208:25:012
15234996532,5cyclictest33-21ksoftirqd/208:25:012
15234996532,4cyclictest33-21ksoftirqd/212:35:002
15234996531,6cyclictest33-21ksoftirqd/209:40:212
15234996531,4cyclictest33-21ksoftirqd/211:35:152
15234996529,10cyclictest33-21ksoftirqd/209:50:012
15234996527,7cyclictest33-21ksoftirqd/212:10:242
15234996432,8cyclictest33-21ksoftirqd/207:25:012
15234996431,6cyclictest33-21ksoftirqd/207:40:132
15234996429,6cyclictest33-21ksoftirqd/208:40:002
15234996428,5cyclictest33-21ksoftirqd/209:25:002
1523599636,17cyclictest32097-21switchtime11:05:233
1523599630,21cyclictest8488-21sshd08:00:403
1523599630,20cyclictest15094-21cat08:15:203
15234996331,6cyclictest33-21ksoftirqd/210:00:182
15234996331,6cyclictest33-21ksoftirqd/209:50:132
15234996331,6cyclictest33-21ksoftirqd/208:15:012
15234996330,6cyclictest33-21ksoftirqd/208:15:272
15234996328,7cyclictest33-21ksoftirqd/211:50:002
15234996328,7cyclictest33-21ksoftirqd/207:50:162
15234996325,6cyclictest33-21ksoftirqd/207:30:222
1523599622,18cyclictest0-21swapper/311:45:503
1523599620,27cyclictest16816-21/usr/sbin/munin08:20:133
1523599620,27cyclictest16816-21/usr/sbin/munin08:20:133
1523599620,24cyclictest21608-21hddtemp_smartct10:45:163
1523599620,21cyclictest24443-21irqstats10:50:193
15234996230,7cyclictest33-21ksoftirqd/212:05:222
15234996230,7cyclictest33-21ksoftirqd/212:05:222
15234996230,6cyclictest33-21ksoftirqd/212:35:232
15234996230,6cyclictest33-21ksoftirqd/212:05:002
15234996230,5cyclictest33-21ksoftirqd/210:05:212
15234996230,5cyclictest33-21ksoftirqd/210:05:202
15234996229,6cyclictest33-21ksoftirqd/208:45:152
15234996229,4cyclictest33-21ksoftirqd/209:10:182
15234996228,7cyclictest33-21ksoftirqd/211:30:242
15234996228,6cyclictest33-21ksoftirqd/209:05:132
15234996227,5cyclictest33-21ksoftirqd/207:45:252
15234996223,7cyclictest33-21ksoftirqd/210:20:182
1523599611,20cyclictest30113-21timerandwakeup08:45:253
1523599610,20cyclictest207-21systemd-journal07:43:383
1523599610,20cyclictest16332-21/usr/sbin/munin10:35:253
1523599610,20cyclictest16332-21/usr/sbin/munin10:35:253
15234996132,5cyclictest33-21ksoftirqd/211:20:262
15234996131,7cyclictest33-21ksoftirqd/211:40:132
15234996131,7cyclictest33-21ksoftirqd/208:00:132
15234996131,3cyclictest33-21ksoftirqd/209:30:182
15234996131,3cyclictest33-21ksoftirqd/209:30:182
15234996130,5cyclictest33-21ksoftirqd/210:00:002
15234996129,6cyclictest33-21ksoftirqd/208:05:122
15234996129,5cyclictest33-21ksoftirqd/210:50:012
15234996127,8cyclictest33-21ksoftirqd/211:10:262
15234996127,7cyclictest33-21ksoftirqd/212:15:222
15234996127,7cyclictest33-21ksoftirqd/208:55:222
15234996127,5cyclictest33-21ksoftirqd/207:25:202
15234996125,6cyclictest33-21ksoftirqd/209:15:172
15234996125,5cyclictest33-21ksoftirqd/210:55:002
1523599600,22cyclictest28672-21awk11:00:133
15234996028,10cyclictest33-21ksoftirqd/212:20:132
15234996027,6cyclictest33-21ksoftirqd/212:25:162
15234996026,6cyclictest33-21ksoftirqd/211:10:002
15234996025,3cyclictest33-21ksoftirqd/210:15:152
15234996023,3cyclictest33-21ksoftirqd/208:25:212
15234996021,6cyclictest33-21ksoftirqd/210:40:152
1523599590,27cyclictest18718-21/usr/sbin/munin10:40:223
1523599590,27cyclictest11414-21cat09:15:193
1523599590,22cyclictest32284-21perl12:15:153
1523599590,21cyclictest16768-21timerandwakeup07:10:253
15234995929,5cyclictest33-21ksoftirqd/210:55:152
15234995929,5cyclictest33-21ksoftirqd/210:10:142
15234995929,5cyclictest33-21ksoftirqd/208:45:012
15234995928,5cyclictest33-21ksoftirqd/209:00:152
15234995927,6cyclictest33-21ksoftirqd/209:25:142
15234995925,7cyclictest33-21ksoftirqd/211:25:162
15234995923,6cyclictest33-21ksoftirqd/208:30:132
15234995830,6cyclictest33-21ksoftirqd/210:35:162
15234995830,6cyclictest33-21ksoftirqd/210:35:152
15234995827,5cyclictest33-21ksoftirqd/211:55:002
15234995826,6cyclictest33-21ksoftirqd/207:35:162
15234995824,5cyclictest33-21ksoftirqd/209:35:012
15234995824,5cyclictest33-21ksoftirqd/207:15:132
15235995711,18cyclictest16498-21run-parts11:40:233
15234995726,5cyclictest33-21ksoftirqd/211:00:232
15234995724,6cyclictest33-21ksoftirqd/207:10:202
1523599560,21cyclictest12930-21taskset10:25:243
15234995625,6cyclictest33-21ksoftirqd/208:50:152
1523599550,27cyclictest17560-21/usr/sbin/munin09:30:283
1523599550,27cyclictest17560-21/usr/sbin/munin09:30:283
1523599550,20cyclictest3369-21mailstats07:50:243
1523599550,18cyclictest11074-21sshd12:37:403
1523599540,22cyclictest21683-21taskset11:51:113
1523599540,21cyclictest27294-21mailstats10:55:243
1523599521,18cyclictest5061-21iostat_ios12:25:163
1523599520,20cyclictest4463-21/usr/sbin/munin10:10:183
1523599520,19cyclictest12396-21sed11:35:023
1523599511,27cyclictest3320-21/usr/sbin/munin09:00:273
1523599511,22cyclictest28860-21taskset12:06:083
1523599511,22cyclictest28860-21taskset12:06:073
1523599511,17cyclictest0-21swapper/308:25:103
1523599510,22cyclictest9991-21taskset09:12:353
1523599500,21cyclictest24180-21taskset11:57:083
1523599490,18cyclictest27170-21/usr/sbin/munin07:35:253
1523599490,18cyclictest14624-21ps10:30:183
1523599471,17cyclictest4317-21/usr/sbin/munin07:55:233
1523599470,19cyclictest1854-21ps11:10:233
1523599460,18cyclictest9072-21/usr/sbin/munin08:05:273
222682450,2sleep10-21swapper/107:25:001
15233994439,3cyclictest25-21ksoftirqd/109:35:011
15233994439,3cyclictest25-21ksoftirqd/109:35:011
1523599430,17cyclictest0-21swapper/309:07:243
139391430,0ptp4l401ktimersoftd/307:20:143
15233994131,8cyclictest25-21ksoftirqd/107:48:341
15232994136,3cyclictest9-21ksoftirqd/007:44:590
139391410,0ptp4l401ktimersoftd/311:21:453
1523599400,22cyclictest15192-21/usr/sbin/munin09:25:183
15233994035,3cyclictest25-21ksoftirqd/109:40:001
1523599390,20cyclictest0-21swapper/310:15:183
1523599390,17cyclictest1300-21snmpd11:19:163
1523399390,7cyclictest1835-21cut08:55:191
15232993935,2cyclictest9-21ksoftirqd/012:30:000
1523299391,6cyclictest121rcu_preempt07:20:180
15233993833,3cyclictest25-21ksoftirqd/112:24:591
15233993833,3cyclictest25-21ksoftirqd/110:20:121
1523599370,20cyclictest0-21swapper/309:48:503
1523599370,18cyclictest0-21swapper/310:22:573
15233993734,2cyclictest25-21ksoftirqd/111:20:001
15233993733,2cyclictest25-21ksoftirqd/109:45:001
15233993732,3cyclictest25-21ksoftirqd/108:45:001
15233993731,3cyclictest25-21ksoftirqd/112:10:001
15233993731,3cyclictest25-21ksoftirqd/112:10:001
15233993720,4cyclictest8963-21cron10:20:001
15232993734,2cyclictest31372-21cut11:05:170
15232993733,2cyclictest9-21ksoftirqd/007:20:010
15232993732,3cyclictest9-21ksoftirqd/010:15:190
15232993732,3cyclictest9-21ksoftirqd/008:05:000
15232993732,3cyclictest24244-21irqrtprio08:35:180
15232993723,4cyclictest9-21ksoftirqd/009:40:000
15232993722,3cyclictest9-21ksoftirqd/007:30:010
15232993721,4cyclictest9-21ksoftirqd/007:40:000
1523599360,23cyclictest1300-21snmpd08:12:193
1523599360,19cyclictest0-21swapper/309:40:253
1523599360,18cyclictest0-21swapper/307:30:243
15233993632,3cyclictest25-21ksoftirqd/110:55:191
15233993632,2cyclictest25-21ksoftirqd/110:10:001
15233993632,2cyclictest25-21ksoftirqd/110:10:001
15233993631,3cyclictest25-21ksoftirqd/112:20:001
15233993631,3cyclictest25-21ksoftirqd/111:55:211
15233993631,3cyclictest25-21ksoftirqd/110:40:001
15233993631,3cyclictest25-21ksoftirqd/110:40:001
15233993631,3cyclictest25-21ksoftirqd/108:30:011
15233993631,3cyclictest25-21ksoftirqd/107:55:001
15233993631,3cyclictest25-21ksoftirqd/107:19:591
15233993630,4cyclictest25-21ksoftirqd/107:30:311
15233993629,5cyclictest25-21ksoftirqd/112:10:031
15232993632,2cyclictest9-21ksoftirqd/009:55:170
15232993631,3cyclictest9-21ksoftirqd/008:40:180
15232993631,3cyclictest9-21ksoftirqd/008:10:180
15232993629,4cyclictest9-21ksoftirqd/007:32:010
15233993530,3cyclictest25-21ksoftirqd/111:40:521
15233993530,3cyclictest25-21ksoftirqd/111:35:021
15233993530,3cyclictest25-21ksoftirqd/111:20:121
15233993530,3cyclictest25-21ksoftirqd/109:20:131
15233993530,3cyclictest25-21ksoftirqd/109:05:191
15233993530,3cyclictest25-21ksoftirqd/108:40:011
15233993529,4cyclictest25-21ksoftirqd/111:37:031
15233993529,4cyclictest25-21ksoftirqd/108:22:371
15233993529,4cyclictest25-21ksoftirqd/108:22:371
15233993529,3cyclictest25-21ksoftirqd/110:45:121
15233993528,5cyclictest25-21ksoftirqd/109:52:511
15233993528,4cyclictest25-21ksoftirqd/108:00:011
15233993520,4cyclictest25-21ksoftirqd/107:40:231
1523399351,3cyclictest121rcu_preempt11:45:221
15232993532,2cyclictest9-21ksoftirqd/008:35:000
15232993530,3cyclictest9-21ksoftirqd/011:30:170
15232993529,4cyclictest9-21ksoftirqd/009:13:310
15232993529,4cyclictest9-21ksoftirqd/008:19:160
1523299351,2cyclictest121rcu_preempt10:00:230
1394913529,3phc2sys41-21ksoftirqd/310:00:273
15235993428,4cyclictest41-21ksoftirqd/311:29:593
1523599341,20cyclictest22088-21irqstats08:30:193
1523599341,20cyclictest19477-21sshd07:16:383
15233993431,2cyclictest25-21ksoftirqd/111:30:011
15233993430,3cyclictest25-21ksoftirqd/109:15:251
15233993430,2cyclictest25-21ksoftirqd/111:50:201
15233993430,2cyclictest25-21ksoftirqd/110:00:191
15233993429,3cyclictest25-21ksoftirqd/110:50:181
15233993429,3cyclictest25-21ksoftirqd/109:50:001
15233993429,3cyclictest25-21ksoftirqd/108:05:131
15233993429,3cyclictest25-21ksoftirqd/107:35:121
15233993428,4cyclictest25-21ksoftirqd/108:34:131
1523399342,3cyclictest121rcu_preempt09:00:141
15233993418,4cyclictest25-21ksoftirqd/107:30:001
1523399340,2cyclictest121rcu_preempt08:00:231
15232993430,3cyclictest9-21ksoftirqd/009:40:160
15232993429,3cyclictest9-21ksoftirqd/012:20:270
15232993429,3cyclictest9-21ksoftirqd/011:00:160
15232993429,3cyclictest9-21ksoftirqd/010:40:000
15232993429,3cyclictest9-21ksoftirqd/010:40:000
15232993428,4cyclictest9-21ksoftirqd/011:44:510
15232993428,4cyclictest9-21ksoftirqd/010:28:010
15232993428,3cyclictest9-21ksoftirqd/011:25:000
15232993419,4cyclictest9-21ksoftirqd/012:35:140
1523299340,4cyclictest9-21ksoftirqd/010:50:120
1523299340,3cyclictest121rcu_preempt11:30:000
1523599330,21cyclictest1317-21runrttasks08:51:243
1523599330,19cyclictest28373-21cat08:45:003
1523599330,19cyclictest0-21swapper/312:31:583
1523599330,17cyclictest0-21swapper/309:36:443
15233993330,2cyclictest25-21ksoftirqd/110:45:001
15233993328,3cyclictest25-21ksoftirqd/109:25:191
15233993328,3cyclictest25-21ksoftirqd/108:52:531
15233993327,4cyclictest25-21ksoftirqd/112:32:581
15233993327,4cyclictest25-21ksoftirqd/111:00:271
15233993327,4cyclictest25-21ksoftirqd/110:25:581
15233993327,4cyclictest25-21ksoftirqd/107:12:491
15233993327,3cyclictest25-21ksoftirqd/110:10:041
15233993320,3cyclictest25-21ksoftirqd/109:15:001
1523399331,3cyclictest121rcu_preempt08:45:121
15232993329,2cyclictest9-21ksoftirqd/011:50:200
15232993329,2cyclictest9-21ksoftirqd/008:50:200
15232993328,3cyclictest9-21ksoftirqd/012:30:170
15232993328,3cyclictest9-21ksoftirqd/011:10:130
15232993328,3cyclictest9-21ksoftirqd/008:20:180
15232993328,3cyclictest9-21ksoftirqd/008:20:180
15232993328,3cyclictest9-21ksoftirqd/007:50:180
15232993327,3cyclictest9-21ksoftirqd/011:50:000
15232993326,4cyclictest9-21ksoftirqd/010:10:400
1523599320,18cyclictest0-21swapper/309:53:413
15233993228,2cyclictest25-21ksoftirqd/111:05:121
15233993227,3cyclictest25-21ksoftirqd/112:00:141
15233993227,3cyclictest25-21ksoftirqd/109:55:181
15233993226,4cyclictest25-21ksoftirqd/111:11:381
15233993226,4cyclictest25-21ksoftirqd/108:18:121
1523399322,3cyclictest121rcu_preempt12:35:131
15232993228,2cyclictest9-21ksoftirqd/010:40:160
15232993228,2cyclictest9-21ksoftirqd/009:25:190
15232993228,2cyclictest9-21ksoftirqd/008:05:170
15232993227,3cyclictest9-21ksoftirqd/010:45:580
15232993227,3cyclictest9-21ksoftirqd/009:54:230
15232993226,4cyclictest9-21ksoftirqd/012:19:050
15232993226,4cyclictest9-21ksoftirqd/011:57:550
15232993226,4cyclictest9-21ksoftirqd/010:21:550
15232993226,4cyclictest9-21ksoftirqd/009:49:580
15232993220,5cyclictest9-21ksoftirqd/009:20:000
15232993219,4cyclictest9-21ksoftirqd/009:20:140
15232993218,3cyclictest9-21ksoftirqd/008:45:220
15232993217,6cyclictest9-21ksoftirqd/011:40:000
15232993216,4cyclictest9-21ksoftirqd/008:55:190
15235993126,3cyclictest41-21ksoftirqd/312:21:093
15235993126,3cyclictest41-21ksoftirqd/310:09:523
15235993126,3cyclictest41-21ksoftirqd/310:09:523
15235993125,4cyclictest41-21ksoftirqd/307:49:133
15233993127,2cyclictest25-21ksoftirqd/108:15:001
15232993128,2cyclictest9-21ksoftirqd/009:10:000
15232993128,2cyclictest9-21ksoftirqd/008:00:000
15232993126,3cyclictest9-21ksoftirqd/012:01:510
15232993126,3cyclictest9-21ksoftirqd/009:00:180
15232993126,3cyclictest9-21ksoftirqd/007:47:430
15232993126,3cyclictest9-21ksoftirqd/007:10:180
1523299310,2cyclictest121rcu_preempt12:05:270
1523299310,2cyclictest121rcu_preempt12:05:270
15235993025,3cyclictest41-21ksoftirqd/309:59:203
1523599300,18cyclictest0-21swapper/312:04:103
15233993026,2cyclictest25-21ksoftirqd/110:35:011
1523399301,3cyclictest121rcu_preempt12:25:151
15232993025,3cyclictest9-21ksoftirqd/012:10:550
15232993024,4cyclictest9-21ksoftirqd/010:59:220
15232993015,5cyclictest9-21ksoftirqd/011:20:000
1523299291,3cyclictest121rcu_preempt08:30:000
15235992824,2cyclictest41-21ksoftirqd/308:55:173
15235992823,3cyclictest41-21ksoftirqd/309:20:123
15232992823,3cyclictest9-21ksoftirqd/009:32:080
15232992823,3cyclictest9-21ksoftirqd/009:32:080
15232992822,4cyclictest9-21ksoftirqd/010:34:020
1523599279,15cyclictest24251-21irqrtprio08:35:203
15232992622,2cyclictest9-21ksoftirqd/010:05:230
15232992622,2cyclictest9-21ksoftirqd/010:05:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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