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2026-07-05 - 14:24
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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 highest latencies:
System rackdslot4.osadl.org (updated Sun Jul 05, 2026 00:45:48)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591227162,22phc2sys0-21swapper/319:09:063
93112205139,22sleep00-21swapper/019:09:240
91692203171,21sleep20-21swapper/219:07:342
92872202169,22sleep10-21swapper/119:09:041
80622700,4sleep00-21swapper/000:30:210
980599690,30cyclictest8139-21/usr/sbin/munin23:25:192
980599670,22cyclictest28859-21mailstats19:45:232
980599661,28cyclictest8369-21/usr/sbin/munin22:20:222
980599660,21cyclictest6150-21/usr/sbin/munin20:05:222
980599650,22cyclictest4661-21/usr/sbin/munin23:20:192
980599650,22cyclictest223-21systemd-journal00:28:272
980599650,21cyclictest7898-21cut00:30:202
980599640,30cyclictest32035-21sshd19:54:452
980599640,22cyclictest22675-21/usr/sbin/munin23:55:182
980599631,21cyclictest28683-21timerwakeupswit21:55:252
980599620,30cyclictest20320-21/usr/sbin/munin21:40:182
138491600,1ptp4l401ktimersoftd/321:01:243
980599590,20cyclictest5919-21missed_timers21:10:232
980599590,20cyclictest5919-21missed_timers21:10:232
980599590,19cyclictest30775-21phc2sys22:00:232
980599590,19cyclictest14031-21sshd22:33:472
980599580,23cyclictest32566-21perl00:15:152
980599580,23cyclictest14461-21cpuspeed22:35:122
980599571,20cyclictest29770-21apt-get20:55:122
980599570,23cyclictest10094-21smartctl00:35:172
980599561,21cyclictest192612sleep221:39:122
980599560,23cyclictest25806-21awk21:50:212
138491560,1ptp4l401ktimersoftd/321:55:143
138491560,1ptp4l401ktimersoftd/300:08:463
980599531,27cyclictest29521-21/usr/sbin/munin00:10:282
980599531,27cyclictest29521-21/usr/sbin/munin00:10:282
980599531,22cyclictest29186-21chrt00:08:442
980599510,21cyclictest24195-21runrttasks19:36:452
9805995017,31cyclictest0-21swapper/219:25:242
138491430,0ptp4l401ktimersoftd/321:34:563
9805994212,21cyclictest25156-21ps00:00:202
9804994233,6cyclictest25-21ksoftirqd/120:20:001
138491420,0ptp4l401ktimersoftd/323:59:363
138491420,0ptp4l401ktimersoftd/323:32:523
138491420,0ptp4l401ktimersoftd/322:54:213
138491420,0ptp4l401ktimersoftd/322:54:213
980599410,28cyclictest2019-21/usr/sbin/munin22:10:112
9804994134,4cyclictest25-21ksoftirqd/120:00:001
50798410,8rtkit-daemon0-21swapper/122:43:501
980599400,27cyclictest16732-21chrt20:27:122
980599390,29cyclictest1840-21sshd21:02:202
138491390,0ptp4l401ktimersoftd/300:30:123
980599389,27cyclictest0-21swapper/220:30:232
980599381,23cyclictest11474-21grep19:10:242
9804993833,3cyclictest25-21ksoftirqd/123:35:001
138491380,0ptp4l401ktimersoftd/319:48:473
9806993731,4cyclictest41-21ksoftirqd/321:36:543
980599370,28cyclictest0-21swapper/222:58:172
980599370,27cyclictest1442-21chrt23:12:092
980599370,22cyclictest4622-21sshd20:04:452
980599370,22cyclictest29877-21seq23:05:172
980599370,18cyclictest0-21swapper/223:15:232
980599370,16cyclictest1319-21snmpd20:45:102
9804993731,4cyclictest25-21ksoftirqd/122:57:061
9804993730,5cyclictest25-21ksoftirqd/119:13:491
9803993731,3cyclictest9-21ksoftirqd/020:25:010
9803993729,5cyclictest9-21ksoftirqd/022:15:010
138491370,0ptp4l401ktimersoftd/323:06:553
9806993631,3cyclictest41-21ksoftirqd/319:19:323
9806993630,4cyclictest41-21ksoftirqd/323:51:123
9806993630,4cyclictest41-21ksoftirqd/323:11:363
9806993630,4cyclictest41-21ksoftirqd/322:06:133
9806993630,4cyclictest41-21ksoftirqd/320:39:013
9806993630,4cyclictest41-21ksoftirqd/320:27:123
9806993629,4cyclictest41-21ksoftirqd/300:15:113
9805993630,4cyclictest33-21ksoftirqd/220:39:152
980599360,22cyclictest11141-21cat22:25:252
9804993631,3cyclictest25-21ksoftirqd/123:15:001
9804993630,4cyclictest25-21ksoftirqd/122:11:011
9804993630,3cyclictest25-21ksoftirqd/122:40:011
9804993628,5cyclictest25-21ksoftirqd/122:55:001
9804993628,5cyclictest25-21ksoftirqd/122:55:001
9803993630,4cyclictest9-21ksoftirqd/023:14:340
9803993630,4cyclictest9-21ksoftirqd/019:33:540
9803993629,5cyclictest9-21ksoftirqd/022:20:060
9803993629,5cyclictest9-21ksoftirqd/021:04:010
138491360,0ptp4l401ktimersoftd/319:58:133
9806993530,3cyclictest41-21ksoftirqd/321:21:453
9806993529,4cyclictest41-21ksoftirqd/320:11:163
9806993528,5cyclictest41-21ksoftirqd/323:20:593
9805993529,4cyclictest33-21ksoftirqd/221:23:522
9805993529,4cyclictest33-21ksoftirqd/200:22:082
980599350,21cyclictest0-21swapper/220:20:142
980599350,18cyclictest0-21swapper/220:53:562
9804993530,3cyclictest25-21ksoftirqd/121:35:191
9804993530,3cyclictest25-21ksoftirqd/120:00:101
9804993529,4cyclictest25-21ksoftirqd/123:24:461
9804993529,4cyclictest25-21ksoftirqd/120:56:191
9804993529,4cyclictest25-21ksoftirqd/120:12:261
9804993529,4cyclictest25-21ksoftirqd/119:19:151
9804993528,5cyclictest25-21ksoftirqd/121:55:321
9803993530,3cyclictest9-21ksoftirqd/021:13:590
9803993530,3cyclictest9-21ksoftirqd/021:13:590
9803993529,4cyclictest9-21ksoftirqd/023:53:100
9803993529,4cyclictest9-21ksoftirqd/021:49:170
9803993529,4cyclictest9-21ksoftirqd/019:59:450
9806993429,3cyclictest41-21ksoftirqd/319:26:523
9806993428,4cyclictest41-21ksoftirqd/321:17:473
9806993427,5cyclictest41-21ksoftirqd/322:24:193
9806993427,4cyclictest41-21ksoftirqd/322:36:113
9806993423,6cyclictest41-21ksoftirqd/320:20:123
980599343,17cyclictest0-21swapper/222:15:172
9805993429,3cyclictest33-21ksoftirqd/221:32:382
9805993428,4cyclictest33-21ksoftirqd/223:54:282
9805993428,4cyclictest33-21ksoftirqd/223:37:432
9805993428,4cyclictest33-21ksoftirqd/222:52:222
9805993428,4cyclictest33-21ksoftirqd/222:52:222
980599341,18cyclictest2346-21apt-get21:05:112
980599340,19cyclictest0-21swapper/219:40:112
980599340,19cyclictest0-21swapper/219:40:112
980599340,18cyclictest0-21swapper/223:32:302
9804993430,3cyclictest25-21ksoftirqd/120:50:171
9804993430,3cyclictest25-21ksoftirqd/100:25:001
9804993429,3cyclictest25-21ksoftirqd/123:47:581
9804993429,3cyclictest25-21ksoftirqd/122:26:331
9804993429,3cyclictest25-21ksoftirqd/121:30:191
9804993429,3cyclictest25-21ksoftirqd/121:12:161
9804993429,3cyclictest25-21ksoftirqd/121:12:161
9804993428,4cyclictest25-21ksoftirqd/122:45:321
9804993428,4cyclictest25-21ksoftirqd/122:07:401
9804993428,4cyclictest25-21ksoftirqd/121:18:091
9804993428,4cyclictest25-21ksoftirqd/120:07:491
9804993428,4cyclictest25-21ksoftirqd/119:46:071
9804993428,4cyclictest25-21ksoftirqd/119:36:531
9804993428,4cyclictest25-21ksoftirqd/100:15:411
9803993429,3cyclictest9-21ksoftirqd/023:01:550
9803993429,3cyclictest9-21ksoftirqd/019:40:380
9803993429,3cyclictest9-21ksoftirqd/019:40:380
9803993428,4cyclictest9-21ksoftirqd/023:09:380
9803993428,4cyclictest9-21ksoftirqd/022:06:180
9803993428,4cyclictest9-21ksoftirqd/022:03:500
9803993428,4cyclictest9-21ksoftirqd/021:59:520
9803993428,4cyclictest9-21ksoftirqd/021:52:100
9803993428,4cyclictest9-21ksoftirqd/020:47:150
9803993428,3cyclictest9-21ksoftirqd/023:30:070
9803993428,3cyclictest1635-21tmpfiles00:17:580
9806993328,3cyclictest41-21ksoftirqd/323:18:343
9806993328,3cyclictest41-21ksoftirqd/322:55:123
9806993328,3cyclictest41-21ksoftirqd/321:45:103
9806993328,3cyclictest41-21ksoftirqd/321:07:203
9806993328,3cyclictest41-21ksoftirqd/319:35:113
9806993327,4cyclictest41-21ksoftirqd/322:12:593
9806993327,4cyclictest41-21ksoftirqd/321:28:273
9806993327,4cyclictest41-21ksoftirqd/319:34:143
9806993327,4cyclictest41-21ksoftirqd/319:10:583
9806993327,4cyclictest41-21ksoftirqd/300:28:433
9806993327,4cyclictest41-21ksoftirqd/300:23:053
9805993327,4cyclictest33-21ksoftirqd/222:45:082
9805993327,4cyclictest33-21ksoftirqd/222:10:002
980599330,21cyclictest1820-21chrt19:56:222
980599330,19cyclictest0-21swapper/221:50:002
9804993328,3cyclictest25-21ksoftirqd/123:41:471
9804993328,3cyclictest25-21ksoftirqd/122:15:191
9804993328,3cyclictest25-21ksoftirqd/121:30:011
9804993328,3cyclictest1-21systemd23:02:441
9804993327,4cyclictest25-21ksoftirqd/121:01:161
9804993327,4cyclictest25-21ksoftirqd/120:25:581
9803993328,3cyclictest9-21ksoftirqd/021:23:460
9803993328,3cyclictest9-21ksoftirqd/021:05:110
9803993328,3cyclictest9-21ksoftirqd/019:35:100
9803993328,3cyclictest9-21ksoftirqd/000:25:350
9803993327,4cyclictest9-21ksoftirqd/022:40:520
9803993327,4cyclictest9-21ksoftirqd/022:36:230
9803993327,4cyclictest9-21ksoftirqd/021:34:370
9803993327,4cyclictest9-21ksoftirqd/000:23:430
9803993326,5cyclictest9-21ksoftirqd/020:25:380
9803993326,4cyclictest9-21ksoftirqd/022:18:180
9803993325,6cyclictest9-21ksoftirqd/022:52:440
9803993325,6cyclictest9-21ksoftirqd/022:52:440
980399330,2cyclictest121rcu_preempt20:07:260
138491330,0ptp4l401ktimersoftd/322:43:293
9806993227,3cyclictest41-21ksoftirqd/320:34:193
9806993226,4cyclictest41-21ksoftirqd/323:49:323
9806993226,4cyclictest41-21ksoftirqd/320:41:423
9806993226,4cyclictest41-21ksoftirqd/319:21:183
9806993225,4cyclictest1319-21snmpd20:49:513
9805993226,4cyclictest33-21ksoftirqd/220:40:432
9804993226,4cyclictest25-21ksoftirqd/123:37:031
9804993226,4cyclictest25-21ksoftirqd/122:21:321
9804993226,4cyclictest25-21ksoftirqd/120:45:211
9804993226,4cyclictest25-21ksoftirqd/100:01:371
9803993227,3cyclictest9-21ksoftirqd/022:47:140
9803993227,3cyclictest9-21ksoftirqd/022:25:180
9803993227,3cyclictest9-21ksoftirqd/020:10:290
9803993227,3cyclictest20385-21irqrtprio20:35:170
9803993226,4cyclictest9-21ksoftirqd/023:59:030
138491320,0ptp4l401ktimersoftd/320:56:093
9806993128,2cyclictest41-21ksoftirqd/300:35:533
9806993126,3cyclictest41-21ksoftirqd/322:49:193
9806993126,3cyclictest41-21ksoftirqd/322:04:023
9806993126,3cyclictest30579-21irqrtprio19:50:193
9806993125,4cyclictest41-21ksoftirqd/323:38:573
9806993125,4cyclictest41-21ksoftirqd/300:13:023
9806993125,4cyclictest41-21ksoftirqd/300:13:023
9805993126,3cyclictest33-21ksoftirqd/223:47:522
9805993126,3cyclictest33-21ksoftirqd/222:43:162
9805993125,4cyclictest33-21ksoftirqd/223:01:422
9805993125,4cyclictest33-21ksoftirqd/219:21:562
980599310,16cyclictest0-21swapper/219:30:172
9804993126,3cyclictest25-21ksoftirqd/121:40:081
9804993126,3cyclictest25-21ksoftirqd/121:05:471
9804993125,4cyclictest25-21ksoftirqd/123:27:111
9804993125,4cyclictest25-21ksoftirqd/120:40:351
9803993126,3cyclictest9-21ksoftirqd/023:18:320
9803993126,3cyclictest9-21ksoftirqd/022:30:130
9803993126,3cyclictest9-21ksoftirqd/000:36:330
9803993125,4cyclictest9-21ksoftirqd/020:56:460
9803993125,4cyclictest9-21ksoftirqd/020:53:290
9803993125,4cyclictest9-21ksoftirqd/020:40:290
9803993125,4cyclictest9-21ksoftirqd/020:16:550
9803993125,4cyclictest9-21ksoftirqd/019:19:090
9803993125,4cyclictest9-21ksoftirqd/000:10:470
9803993125,4cyclictest9-21ksoftirqd/000:10:470
9803993124,4cyclictest9-21ksoftirqd/020:32:230
138491310,0ptp4l401ktimersoftd/323:00:203
138491310,0ptp4l401ktimersoftd/321:52:053
138491310,0ptp4l401ktimersoftd/300:02:403
9806993025,3cyclictest41-21ksoftirqd/322:17:543
9806993024,4cyclictest41-21ksoftirqd/322:33:143
9806993024,4cyclictest41-21ksoftirqd/322:29:163
9806993024,4cyclictest41-21ksoftirqd/319:40:563
9806993024,4cyclictest41-21ksoftirqd/319:40:563
9805993025,3cyclictest33-21ksoftirqd/220:11:522
9805993024,4cyclictest33-21ksoftirqd/223:40:402
980599300,27cyclictest1319-21snmpd20:19:452
9804993026,2cyclictest25-21ksoftirqd/122:00:111
9804993025,3cyclictest25-21ksoftirqd/123:50:181
9804993025,3cyclictest25-21ksoftirqd/120:32:091
9804993024,4cyclictest25-21ksoftirqd/120:35:381
9804993024,4cyclictest25-21ksoftirqd/119:23:371
9804993024,4cyclictest25-21ksoftirqd/100:28:571
9804993024,4cyclictest25-21ksoftirqd/100:10:521
9804993024,4cyclictest25-21ksoftirqd/100:10:521
9804993024,3cyclictest25-21ksoftirqd/121:25:001
9804993024,3cyclictest22962-21sed23:55:191
9803993025,3cyclictest9-21ksoftirqd/021:26:020
9803993025,3cyclictest9-21ksoftirqd/000:05:110
9803993024,4cyclictest9-21ksoftirqd/021:40:070
9803993024,4cyclictest9-21ksoftirqd/020:01:310
9803993024,3cyclictest9-21ksoftirqd/021:35:080
9803993023,4cyclictest9-21ksoftirqd/019:25:030
138491300,8ptp4l401ktimersoftd/320:54:433
9806992924,3cyclictest41-21ksoftirqd/321:12:143
9806992924,3cyclictest41-21ksoftirqd/321:12:143
9806992923,4cyclictest41-21ksoftirqd/320:02:373
980599290,27cyclictest0-21swapper/221:17:152
9804992924,3cyclictest25-21ksoftirqd/123:07:371
9804992924,3cyclictest25-21ksoftirqd/119:25:191
9804992923,4cyclictest25-21ksoftirqd/120:23:091
9804992923,4cyclictest25-21ksoftirqd/100:36:351
9804992923,4cyclictest25-21ksoftirqd/100:31:141
9804992923,4cyclictest25-21ksoftirqd/100:07:191
9804992921,5cyclictest25-21ksoftirqd/123:20:001
9803992924,3cyclictest9-21ksoftirqd/023:26:260
9803992924,3cyclictest9-21ksoftirqd/019:21:020
9803992924,3cyclictest9-21ksoftirqd/019:10:200
9805992821,4cyclictest33-21ksoftirqd/219:16:032
9804992824,2cyclictest25-21ksoftirqd/119:35:001
9804992823,3cyclictest25-21ksoftirqd/119:40:201
9804992823,3cyclictest25-21ksoftirqd/119:40:201
9804992822,4cyclictest25-21ksoftirqd/119:51:411
9804992818,9cyclictest25-21ksoftirqd/122:30:241
9803992823,3cyclictest9-21ksoftirqd/023:20:440
9803992822,4cyclictest9-21ksoftirqd/023:47:480
9803992822,4cyclictest9-21ksoftirqd/023:41:140
9803992822,4cyclictest9-21ksoftirqd/019:49:380
9803992821,5cyclictest9-21ksoftirqd/021:20:000
9806992722,3cyclictest41-21ksoftirqd/323:40:553
9806992722,3cyclictest41-21ksoftirqd/320:06:593
980599270,23cyclictest12337-21grep21:25:122
9804992723,2cyclictest25-21ksoftirqd/121:45:271
9803992721,4cyclictest9-21ksoftirqd/023:35:320
9804992620,4cyclictest25-21ksoftirqd/121:52:501
9803992621,3cyclictest9-21ksoftirqd/022:58:250
138491260,0ptp4l401ktimersoftd/320:17:133
9806992520,3cyclictest41-21ksoftirqd/321:41:423
138491230,0ptp4l401ktimersoftd/323:25:223
9803992215,5cyclictest9-21ksoftirqd/019:55:000
9803992014,3cyclictest25869-21sendmail_mailst00:00:260
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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