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2026-04-20 - 20:46
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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 rackdslot2.osadl.org (updated Mon Apr 20, 2026 12:45:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139591238172,22phc2sys0-21swapper/307:06:133
288302206172,23sleep00-21swapper/007:07:140
287332204169,23sleep20-21swapper/207:06:002
269112202168,22sleep10-21swapper/107:05:021
1624321350,2sleep10-21swapper/110:05:131
2934199595,19cyclictest24291-21/usr/sbin/munin08:05:221
5562580,4sleep1557-21tail09:30:241
2934199576,11cyclictest27460-21vmstat10:25:311
2934199576,11cyclictest24009-21cut12:35:171
2934199567,18cyclictest13215-21fschecks_time11:05:171
2934199566,11cyclictest5541-21ps09:40:231
2934199565,11cyclictest8927-21ps08:40:241
139291540,1ptp4l401ktimersoftd/311:26:043
139291540,1ptp4l401ktimersoftd/310:08:003
2934199524,19cyclictest21122-21sed08:00:151
29342995032,4cyclictest33-21ksoftirqd/207:57:592
2934199507,12cyclictest24914-21df_abs11:30:131
46382490,2sleep00-21swapper/009:40:140
2934199496,12cyclictest2303-21seq08:28:411
2934199495,12cyclictest23876-21/usr/sbin/munin10:20:171
2934199495,11cyclictest28157-21/usr/sbin/munin09:20:241
2934199486,11cyclictest19498-21sed10:10:191
29343994742,3cyclictest1379-21cron09:35:003
29342994730,4cyclictest33-21ksoftirqd/210:43:592
195862470,1sleep10-21swapper/112:25:191
2934299464,40cyclictest13407-21latency_hist07:45:002
2934199465,11cyclictest16426-21swap08:55:251
2934199465,11cyclictest15578-21fschecks_time11:10:171
2934099463,6cyclictest9-21ksoftirqd/011:39:290
139291460,1ptp4l401ktimersoftd/309:01:313
2934099452,6cyclictest9-21ksoftirqd/007:55:000
2934199446,11cyclictest6154-21chrt07:28:371
2934099432,5cyclictest9-21ksoftirqd/012:10:460
139291430,0ptp4l401ktimersoftd/309:59:003
2934199424,11cyclictest1827-21runrttasks09:35:031
2934099422,5cyclictest9-21ksoftirqd/008:03:590
2934099421,6cyclictest9-21ksoftirqd/011:55:250
29342994136,3cyclictest12299-21cron11:05:002
2934199416,11cyclictest13270-21interrupts08:50:181
2934199415,12cyclictest6588-21/usr/sbin/munin08:35:241
2934099413,5cyclictest9-21ksoftirqd/009:45:230
29340994135,4cyclictest7540-21cron10:55:000
29343994034,4cyclictest41-21ksoftirqd/311:54:283
2934199404,11cyclictest8709-21cat07:35:001
2934099403,5cyclictest9-21ksoftirqd/011:26:010
2934099402,5cyclictest9-21ksoftirqd/009:18:590
29343993932,4cyclictest41-21ksoftirqd/310:30:103
29343993929,6cyclictest41-21ksoftirqd/309:10:153
2934199394,19cyclictest2877-21cat10:44:591
2934099390,5cyclictest0-21swapper/008:25:000
29343993833,3cyclictest41-21ksoftirqd/311:00:013
29343993833,3cyclictest41-21ksoftirqd/307:24:293
29343993832,4cyclictest41-21ksoftirqd/312:27:013
29343993832,4cyclictest41-21ksoftirqd/309:42:063
29343993832,4cyclictest41-21ksoftirqd/308:37:263
29343993832,4cyclictest41-21ksoftirqd/307:18:563
29342993832,4cyclictest33-21ksoftirqd/211:56:072
29342993832,4cyclictest33-21ksoftirqd/207:13:502
29341993832,4cyclictest24233-21cron09:15:001
2934099384,4cyclictest9-21ksoftirqd/010:25:130
2934099384,3cyclictest9-21ksoftirqd/009:25:180
2934099382,6cyclictest9-21ksoftirqd/007:55:220
29343993732,3cyclictest41-21ksoftirqd/307:43:553
29343993731,4cyclictest41-21ksoftirqd/310:21:533
29343993731,4cyclictest41-21ksoftirqd/307:54:023
29343993731,4cyclictest41-21ksoftirqd/307:32:323
29342993731,4cyclictest33-21ksoftirqd/211:07:242
29341993732,3cyclictest25-21ksoftirqd/111:19:591
2934099372,6cyclictest9-21ksoftirqd/011:51:160
2934099371,5cyclictest9-21ksoftirqd/011:30:180
41298360,8rtkit-daemon0-21swapper/312:16:563
29343993631,3cyclictest41-21ksoftirqd/311:35:103
29343993631,3cyclictest41-21ksoftirqd/311:30:313
29343993631,3cyclictest41-21ksoftirqd/311:17:123
29343993631,3cyclictest41-21ksoftirqd/309:25:123
29343993631,3cyclictest41-21ksoftirqd/309:20:013
29343993630,4cyclictest41-21ksoftirqd/308:40:363
29343993630,4cyclictest41-21ksoftirqd/307:35:133
29343993630,4cyclictest41-21ksoftirqd/307:11:303
29343993630,4cyclictest19289-21kworker/3:109:50:143
29342993630,4cyclictest33-21ksoftirqd/212:39:242
29342993630,4cyclictest33-21ksoftirqd/209:01:292
29342993630,4cyclictest33-21ksoftirqd/208:03:442
29342993630,4cyclictest33-21ksoftirqd/207:54:262
2934199366,18cyclictest1108-21ptp4l11:45:231
2934199365,17cyclictest9701-21chrt10:57:221
29341993631,3cyclictest25-21ksoftirqd/108:48:001
29341993630,4cyclictest25-21ksoftirqd/108:13:141
2934199361,9cyclictest0-21swapper/110:45:211
2934099366,5cyclictest9-21ksoftirqd/008:25:230
29340993630,4cyclictest9-21ksoftirqd/010:37:390
29340993630,4cyclictest9-21ksoftirqd/010:15:120
29340993630,4cyclictest9-21ksoftirqd/008:30:580
29340993629,4cyclictest9-21ksoftirqd/007:31:210
2934099362,5cyclictest9-21ksoftirqd/011:20:260
2934099362,5cyclictest9-21ksoftirqd/009:24:570
2934099361,6cyclictest9-21ksoftirqd/011:05:260
29343993530,3cyclictest41-21ksoftirqd/311:47:463
29343993530,3cyclictest41-21ksoftirqd/311:07:033
29343993530,3cyclictest41-21ksoftirqd/310:41:103
29343993530,3cyclictest41-21ksoftirqd/309:38:443
29343993530,3cyclictest41-21ksoftirqd/308:33:343
29343993529,4cyclictest41-21ksoftirqd/312:36:353
29343993529,4cyclictest41-21ksoftirqd/312:03:423
29343993529,4cyclictest41-21ksoftirqd/310:52:583
29342993530,3cyclictest33-21ksoftirqd/211:25:112
29342993530,3cyclictest33-21ksoftirqd/210:50:002
29342993530,3cyclictest33-21ksoftirqd/209:30:122
29342993530,3cyclictest33-21ksoftirqd/209:17:002
29342993530,3cyclictest33-21ksoftirqd/208:37:342
29342993529,4cyclictest33-21ksoftirqd/211:37:182
29342993529,4cyclictest33-21ksoftirqd/211:32:572
29342993529,4cyclictest33-21ksoftirqd/208:29:362
29342993528,4cyclictest33-21ksoftirqd/210:26:252
2934199355,18cyclictest30322-21apt-get08:20:111
2934199354,11cyclictest10269-21proc_pri09:50:241
2934099354,4cyclictest9-21ksoftirqd/010:30:010
29340993529,4cyclictest9-21ksoftirqd/011:42:010
29340993529,4cyclictest9-21ksoftirqd/011:11:280
29340993529,4cyclictest9-21ksoftirqd/010:01:560
29340993529,4cyclictest9-21ksoftirqd/009:36:330
29340993529,4cyclictest9-21ksoftirqd/009:01:350
41298340,7rtkit-daemon0-21swapper/310:04:273
29343993429,3cyclictest41-21ksoftirqd/312:10:183
29343993429,3cyclictest41-21ksoftirqd/309:22:363
29343993429,3cyclictest41-21ksoftirqd/307:48:023
29343993428,4cyclictest41-21ksoftirqd/311:02:333
29343993428,4cyclictest41-21ksoftirqd/310:38:413
29343993428,4cyclictest41-21ksoftirqd/308:59:583
29343993428,4cyclictest41-21ksoftirqd/308:17:453
29343993428,4cyclictest41-21ksoftirqd/307:29:433
29342993429,3cyclictest33-21ksoftirqd/212:25:002
29342993429,3cyclictest33-21ksoftirqd/210:05:032
29342993429,3cyclictest33-21ksoftirqd/209:21:102
29342993429,3cyclictest33-21ksoftirqd/207:29:382
29342993428,4cyclictest33-21ksoftirqd/211:54:072
29342993428,4cyclictest33-21ksoftirqd/211:20:372
29342993428,4cyclictest33-21ksoftirqd/209:41:532
29342993428,4cyclictest33-21ksoftirqd/209:07:352
29341993429,3cyclictest25-21ksoftirqd/111:23:441
29341993429,3cyclictest25-21ksoftirqd/107:11:161
29341993428,4cyclictest25-21ksoftirqd/108:17:551
29341993427,4cyclictest25-21ksoftirqd/109:26:351
29340993429,3cyclictest9-21ksoftirqd/007:15:160
29340993428,4cyclictest9-21ksoftirqd/011:04:220
29340993428,4cyclictest9-21ksoftirqd/007:36:220
2934099342,5cyclictest9-21ksoftirqd/012:36:480
135291340,1getstats0-21swapper/310:14:413
29343993329,3cyclictest41-21ksoftirqd/310:45:183
29343993328,3cyclictest41-21ksoftirqd/311:11:353
29343993328,3cyclictest41-21ksoftirqd/310:29:263
29343993328,3cyclictest41-21ksoftirqd/309:46:383
29343993328,3cyclictest41-21ksoftirqd/308:23:093
29343993328,3cyclictest41-21ksoftirqd/308:05:003
29342993328,3cyclictest33-21ksoftirqd/212:10:012
29342993328,3cyclictest33-21ksoftirqd/210:39:052
29342993328,3cyclictest33-21ksoftirqd/210:02:472
29342993328,3cyclictest33-21ksoftirqd/209:10:382
29342993328,3cyclictest33-21ksoftirqd/208:58:042
29342993328,3cyclictest33-21ksoftirqd/208:07:192
29342993327,4cyclictest33-21ksoftirqd/212:32:022
29342993327,4cyclictest33-21ksoftirqd/208:24:012
29342993327,4cyclictest33-21ksoftirqd/208:12:512
29342993327,4cyclictest33-21ksoftirqd/207:21:242
29342993326,4cyclictest33-21ksoftirqd/210:55:012
2934199336,16cyclictest23665-21python11:25:231
2934199335,12cyclictest29767-21dpkg11:40:011
29341993328,3cyclictest25-21ksoftirqd/112:14:071
29341993328,3cyclictest25-21ksoftirqd/111:55:371
29341993327,4cyclictest25-21ksoftirqd/112:21:061
29341993327,4cyclictest25-21ksoftirqd/112:09:251
29341993327,4cyclictest25-21ksoftirqd/107:41:531
29341993327,4cyclictest25-21ksoftirqd/107:22:231
29340993328,3cyclictest9-21ksoftirqd/012:35:000
29340993327,4cyclictest9-21ksoftirqd/012:18:320
29340993327,4cyclictest9-21ksoftirqd/010:09:430
29343993227,3cyclictest41-21ksoftirqd/312:34:403
29343993227,3cyclictest41-21ksoftirqd/312:06:073
29343993227,3cyclictest41-21ksoftirqd/311:40:253
29343993227,3cyclictest41-21ksoftirqd/309:05:123
29343993227,3cyclictest41-21ksoftirqd/308:45:193
29343993227,3cyclictest41-21ksoftirqd/308:28:453
29343993226,4cyclictest41-21ksoftirqd/308:52:433
29342993227,3cyclictest33-21ksoftirqd/212:10:122
29342993227,3cyclictest33-21ksoftirqd/212:04:052
29342993227,3cyclictest33-21ksoftirqd/211:48:432
29342993227,3cyclictest33-21ksoftirqd/211:44:222
29342993227,3cyclictest33-21ksoftirqd/211:17:222
29342993227,3cyclictest33-21ksoftirqd/209:54:232
29342993226,4cyclictest33-21ksoftirqd/211:12:192
29342993226,4cyclictest33-21ksoftirqd/210:32:592
29342993226,4cyclictest33-21ksoftirqd/209:58:042
29342993226,4cyclictest33-21ksoftirqd/209:37:562
2934199325,16cyclictest8270-21timerwakeupswit09:45:291
29341993227,3cyclictest25-21ksoftirqd/112:30:531
29341993227,3cyclictest25-21ksoftirqd/110:33:431
29341993227,3cyclictest25-21ksoftirqd/109:17:331
29341993227,3cyclictest25-21ksoftirqd/107:55:521
29341993226,4cyclictest25-21ksoftirqd/109:56:441
29341993225,4cyclictest25-21ksoftirqd/107:51:241
2934199322,10cyclictest0-21swapper/110:15:261
2934199321,8cyclictest31747-21egrep07:15:121
29340993227,3cyclictest9-21ksoftirqd/009:10:130
29340993226,4cyclictest9-21ksoftirqd/012:29:500
29340993226,4cyclictest9-21ksoftirqd/012:06:120
29340993226,4cyclictest9-21ksoftirqd/008:54:240
29340993226,4cyclictest9-21ksoftirqd/008:45:340
29340993226,4cyclictest9-21ksoftirqd/007:10:070
2934099320,5cyclictest9-21ksoftirqd/008:35:280
29343993126,3cyclictest41-21ksoftirqd/311:55:583
29343993126,3cyclictest41-21ksoftirqd/311:24:303
29343993125,4cyclictest41-21ksoftirqd/310:16:323
29343993125,4cyclictest41-21ksoftirqd/308:05:143
29342993126,3cyclictest33-21ksoftirqd/210:20:092
29342993126,3cyclictest33-21ksoftirqd/210:13:092
29342993125,3cyclictest33-21ksoftirqd/207:17:222
2934199316,11cyclictest19739-21/usr/sbin/munin09:05:111
2934199315,12cyclictest3746-21/usr/sbin/munin08:30:211
2934199314,7cyclictest31579-21irqstats10:35:211
29341993126,3cyclictest25-21ksoftirqd/112:17:401
29341993126,3cyclictest25-21ksoftirqd/111:39:131
29341993126,3cyclictest25-21ksoftirqd/109:00:091
2934099316,5cyclictest9-21ksoftirqd/009:50:250
29340993127,2cyclictest9934-21cat11:00:010
29340993125,4cyclictest9-21ksoftirqd/010:12:030
29340993125,4cyclictest9-21ksoftirqd/009:32:200
29340993124,4cyclictest9-21ksoftirqd/009:07:170
139291310,0ptp4l401ktimersoftd/308:10:303
29343993025,3cyclictest41-21ksoftirqd/312:22:443
29343993025,3cyclictest41-21ksoftirqd/307:55:193
29342993026,3cyclictest33-21ksoftirqd/207:33:132
29342993025,3cyclictest33-21ksoftirqd/210:50:452
29342993025,3cyclictest33-21ksoftirqd/210:16:232
29342993025,3cyclictest33-21ksoftirqd/209:26:442
29342993025,3cyclictest33-21ksoftirqd/208:45:022
29342993025,3cyclictest33-21ksoftirqd/208:33:522
29342993024,4cyclictest33-21ksoftirqd/209:49:372
29341993025,3cyclictest25-21ksoftirqd/111:04:511
29341993025,3cyclictest25-21ksoftirqd/110:03:581
29341993025,3cyclictest25-21ksoftirqd/107:39:211
29341993024,4cyclictest25-21ksoftirqd/111:52:381
29341993024,4cyclictest25-21ksoftirqd/107:45:501
29340993024,4cyclictest9-21ksoftirqd/011:47:030
29340993024,4cyclictest9-21ksoftirqd/010:22:590
29340993024,4cyclictest9-21ksoftirqd/008:18:350
29342992924,3cyclictest33-21ksoftirqd/212:25:072
29342992924,3cyclictest33-21ksoftirqd/208:17:442
29342992923,4cyclictest33-21ksoftirqd/208:51:282
29342992923,4cyclictest33-21ksoftirqd/208:44:592
29341992924,3cyclictest25-21ksoftirqd/112:02:241
29341992923,4cyclictest25-21ksoftirqd/110:51:561
2934099296,4cyclictest9-21ksoftirqd/007:45:140
2934099295,6cyclictest9-21ksoftirqd/007:25:120
29340992924,3cyclictest9-21ksoftirqd/011:15:180
29340992924,3cyclictest9-21ksoftirqd/007:20:120
29340992923,4cyclictest9-21ksoftirqd/012:22:040
29342992821,4cyclictest33-21ksoftirqd/207:37:592
2934099282,6cyclictest9-21ksoftirqd/008:11:590
29340992822,4cyclictest9-21ksoftirqd/009:55:010
29340992822,4cyclictest9-21ksoftirqd/008:40:010
29340992822,4cyclictest9-21ksoftirqd/008:09:120
29340992721,4cyclictest9-21ksoftirqd/010:44:530
29340992721,4cyclictest9-21ksoftirqd/007:40:110
2934099264,4cyclictest9-21ksoftirqd/008:55:140
2934099258,5cyclictest9-21ksoftirqd/012:04:030
2934099255,4cyclictest9-21ksoftirqd/010:49:220
2934299198,8cyclictest15767-21unixbench_multi12:15:272
29342991913,4cyclictest15030-21sendmail_mailtr07:45:242
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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