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2025-12-10 - 19:02
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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 rackdslot1.osadl.org (updated Wed Dec 10, 2025 12:45:39)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1416321840,6sleep20-21swapper/207:05:242
2180521770,7sleep31525399cyclictest08:30:253
1131221570,6sleep31525399cyclictest11:35:193
2847191660,4ptp4l23584-21df09:45:151
2847191640,4ptp4l7247-21df_inode09:10:141
2847191610,4ptp4l0-21swapper/008:03:320
2847191590,4ptp4l0-21swapper/008:20:250
15253995928,3cyclictest41-21ksoftirqd/309:59:303
15250995923,9cyclictest9-21ksoftirqd/009:25:170
2847191580,4ptp4l0-21swapper/109:52:181
2847191580,3ptp4l0-21swapper/310:45:273
15253995824,7cyclictest41-21ksoftirqd/311:53:123
2847191560,9ptp4l3904-21diskstats12:30:152
2847191560,5ptp4l0-21swapper/107:09:051
2847191560,4ptp4l0-21swapper/109:21:051
2847191560,3ptp4l0-21swapper/111:25:261
15253995626,4cyclictest41-21ksoftirqd/309:45:343
15253995625,4cyclictest41-21ksoftirqd/309:26:043
15253995624,4cyclictest41-21ksoftirqd/307:19:313
2847191550,4ptp4l0-21swapper/109:38:351
2847191550,4ptp4l0-21swapper/109:38:351
2847191550,4ptp4l0-21swapper/011:02:370
15253995528,7cyclictest41-21ksoftirqd/310:26:263
15253995524,4cyclictest41-21ksoftirqd/308:14:183
15250995520,4cyclictest9-21ksoftirqd/011:26:100
2847191540,4ptp4l0-21swapper/110:00:261
15253995426,8cyclictest41-21ksoftirqd/311:40:173
15253995426,7cyclictest41-21ksoftirqd/308:27:433
15253995426,4cyclictest41-21ksoftirqd/310:13:353
15253995424,4cyclictest41-21ksoftirqd/312:17:023
15253995424,4cyclictest41-21ksoftirqd/311:11:033
2847191530,4ptp4l0-21swapper/112:27:361
2847191530,4ptp4l0-21swapper/112:13:521
2847191530,4ptp4l0-21swapper/109:07:321
2847191530,4ptp4l0-21swapper/109:07:321
2847191530,4ptp4l0-21swapper/010:33:430
2847191530,4ptp4l0-21swapper/009:17:000
2847191530,4ptp4l0-21swapper/009:11:010
2847191530,4ptp4l0-21swapper/008:28:080
2847191530,3ptp4l0-21swapper/107:25:511
2847191530,3ptp4l0-21swapper/107:14:051
2847191530,3ptp4l0-21swapper/007:36:180
15253995329,11cyclictest41-21ksoftirqd/312:36:253
15253995329,11cyclictest41-21ksoftirqd/312:36:253
15253995325,7cyclictest41-21ksoftirqd/307:35:243
15253995323,4cyclictest41-21ksoftirqd/308:53:153
15253995323,4cyclictest41-21ksoftirqd/308:03:303
15253995317,11cyclictest41-21ksoftirqd/307:25:203
15253995312,8cyclictest41-21ksoftirqd/308:36:533
15250995319,9cyclictest9-21ksoftirqd/008:11:300
2847191520,4ptp4l0-21swapper/210:40:212
2847191520,4ptp4l0-21swapper/210:40:212
2847191520,4ptp4l0-21swapper/109:59:111
2847191520,4ptp4l0-21swapper/009:41:220
2847191520,4ptp4l0-21swapper/008:54:110
2847191520,3ptp4l0-21swapper/010:20:250
2847191520,3ptp4l0-21swapper/009:46:480
2847191520,2ptp4l0-21swapper/011:11:490
2847191520,10ptp4l13213-21df_inode07:05:150
15253995227,6cyclictest41-21ksoftirqd/308:44:563
15253995223,7cyclictest41-21ksoftirqd/310:01:473
15253995222,7cyclictest41-21ksoftirqd/309:53:353
15250995224,6cyclictest9-21ksoftirqd/008:20:010
15250995223,5cyclictest9-21ksoftirqd/007:25:150
15250995222,7cyclictest9-21ksoftirqd/008:35:170
15250995222,6cyclictest9-21ksoftirqd/010:51:440
15250995221,6cyclictest9-21ksoftirqd/012:30:260
2847191510,4ptp4l0-21swapper/110:50:401
2847191510,4ptp4l0-21swapper/007:43:330
2847191510,3ptp4l0-21swapper/210:45:282
2847191510,3ptp4l0-21swapper/111:59:581
2847191510,3ptp4l0-21swapper/111:40:241
2847191510,3ptp4l0-21swapper/111:17:591
2847191510,3ptp4l0-21swapper/109:19:091
15253995126,6cyclictest41-21ksoftirqd/308:16:523
15253995123,3cyclictest41-21ksoftirqd/310:15:253
15253995121,4cyclictest41-21ksoftirqd/309:03:263
15250995126,8cyclictest9-21ksoftirqd/007:14:410
2847191500,4ptp4l0-21swapper/107:16:431
2847191500,4ptp4l0-21swapper/007:57:350
2847191500,3ptp4l0-21swapper/008:46:000
2847191500,11ptp4l0-21swapper/208:56:572
2847191500,11ptp4l0-21swapper/208:29:282
1525399509,9cyclictest41-21ksoftirqd/307:30:063
1525399505,7cyclictest41-21ksoftirqd/310:50:173
15253995028,10cyclictest41-21ksoftirqd/308:07:173
15253995022,7cyclictest41-21ksoftirqd/309:10:213
15253995020,7cyclictest41-21ksoftirqd/307:45:253
15253995019,7cyclictest41-21ksoftirqd/311:25:013
15250995021,6cyclictest9-21ksoftirqd/012:17:250
15250995021,4cyclictest9-21ksoftirqd/008:31:530
15253994920,8cyclictest41-21ksoftirqd/311:25:203
15253994920,4cyclictest41-21ksoftirqd/311:55:203
15253994920,3cyclictest41-21ksoftirqd/309:24:593
15253994919,7cyclictest41-21ksoftirqd/310:05:333
15253994919,7cyclictest41-21ksoftirqd/307:20:223
15250994921,3cyclictest9-21ksoftirqd/012:35:170
15250994921,3cyclictest9-21ksoftirqd/012:35:170
15250994919,7cyclictest9-21ksoftirqd/009:39:520
15250994919,7cyclictest9-21ksoftirqd/009:39:520
15253994827,10cyclictest41-21ksoftirqd/311:08:593
15253994822,6cyclictest41-21ksoftirqd/312:30:343
15253994814,8cyclictest41-21ksoftirqd/312:01:173
15253994814,7cyclictest41-21ksoftirqd/309:44:373
15253994813,8cyclictest41-21ksoftirqd/308:20:153
15253994813,8cyclictest41-21ksoftirqd/307:14:253
15253994813,7cyclictest41-21ksoftirqd/309:35:193
15253994813,7cyclictest41-21ksoftirqd/309:35:193
15250994822,8cyclictest9-21ksoftirqd/007:16:020
15250994822,6cyclictest9-21ksoftirqd/012:21:170
15250994822,6cyclictest9-21ksoftirqd/007:48:460
15250994820,7cyclictest9-21ksoftirqd/011:22:160
15250994820,3cyclictest9-21ksoftirqd/008:45:000
15250994818,5cyclictest9-21ksoftirqd/009:10:000
15250994818,5cyclictest9-21ksoftirqd/009:10:000
2847191470,3ptp4l0-21swapper/107:54:551
15253994725,10cyclictest41-21ksoftirqd/310:43:583
15253994725,10cyclictest41-21ksoftirqd/310:43:583
15253994714,8cyclictest41-21ksoftirqd/312:09:073
1525099479,6cyclictest9-21ksoftirqd/012:25:230
15250994721,6cyclictest9-21ksoftirqd/011:44:270
15250994721,6cyclictest9-21ksoftirqd/010:26:360
15250994718,5cyclictest9-21ksoftirqd/011:45:260
15250994718,3cyclictest9-21ksoftirqd/010:41:020
15250994718,3cyclictest9-21ksoftirqd/010:41:020
2847191460,4ptp4l20255-21ls10:45:221
2847191460,11ptp4l0-21swapper/208:11:372
15253994626,9cyclictest41-21ksoftirqd/307:40:053
15253994625,9cyclictest41-21ksoftirqd/309:15:133
15253994621,6cyclictest41-21ksoftirqd/311:15:173
15253994620,7cyclictest41-21ksoftirqd/311:00:163
15253994617,4cyclictest41-21ksoftirqd/308:58:313
15253994612,7cyclictest41-21ksoftirqd/311:49:103
15253994612,4cyclictest41-21ksoftirqd/310:25:013
1525299461,43cyclictest0-21swapper/209:55:292
15250994626,10cyclictest9-21ksoftirqd/010:05:330
15250994625,8cyclictest9-21ksoftirqd/011:37:220
15250994622,6cyclictest9-21ksoftirqd/011:08:200
15250994619,8cyclictest9-21ksoftirqd/010:15:190
15250994619,7cyclictest9-21ksoftirqd/007:52:470
15250994618,5cyclictest9-21ksoftirqd/010:02:210
15250994617,4cyclictest9-21ksoftirqd/011:30:180
15250994615,6cyclictest9-21ksoftirqd/007:20:280
2847191450,9ptp4l0-21swapper/212:25:462
2847191450,9ptp4l0-21swapper/211:44:412
2847191450,9ptp4l0-21swapper/111:37:061
2847191450,9ptp4l0-21swapper/108:30:161
2847191450,4ptp4l14446-21apt-get10:35:133
2847191450,4ptp4l0-21swapper/009:03:410
1525399456,3cyclictest41-21ksoftirqd/312:14:173
1525399452,4cyclictest121rcu_preempt07:55:593
1525399451,3cyclictest121rcu_preempt11:00:003
15253994511,7cyclictest41-21ksoftirqd/308:46:003
2847191440,9ptp4l0-21swapper/212:24:102
2847191440,9ptp4l0-21swapper/211:02:002
2847191440,3ptp4l321ktimersoftd/211:35:272
2847191440,10ptp4l0-21swapper/209:30:352
2847191440,10ptp4l0-21swapper/209:14:522
2847191440,10ptp4l0-21swapper/107:24:211
15253994424,9cyclictest41-21ksoftirqd/311:32:343
1525099443,5cyclictest9-21ksoftirqd/012:04:590
15250994420,5cyclictest9-21ksoftirqd/010:48:320
15250994420,4cyclictest9-21ksoftirqd/007:32:180
2847191430,6ptp4l0-21swapper/212:35:212
2847191430,6ptp4l0-21swapper/212:35:212
2847191430,5ptp4l13622-21df_inode08:15:171
2847191430,5ptp4l0-21swapper/212:15:142
2847191430,5ptp4l0-21swapper/207:40:142
2847191430,4ptp4l3587-21apt-get12:30:141
2847191430,4ptp4l24144-21apt-get10:55:141
2847191430,4ptp4l17117-21/usr/sbin/munin09:30:190
2847191430,4ptp4l0-21swapper/310:33:573
15250994316,6cyclictest9-21ksoftirqd/011:15:240
1525099430,2cyclictest2847191ptp4l09:20:190
2847191420,9ptp4l0-21swapper/207:17:382
2847191420,6ptp4l685-21missed_timers08:55:240
2847191420,5ptp4l0-21swapper/209:50:202
2847191420,4ptp4l3308-21/usr/sbin/munin10:10:171
2847191420,4ptp4l1525399cyclictest12:23:173
2847191420,4ptp4l1525199cyclictest11:20:131
2847191420,4ptp4l0-21swapper/210:23:172
2847191420,4ptp4l0-21swapper/112:02:391
2847191420,3ptp4l8477-21memory10:20:201
2847191420,3ptp4l5770-21iostat_ios10:15:211
2847191420,3ptp4l29556-21iostat_ios12:15:191
2847191420,3ptp4l2542-21hddtemp_smartct09:00:181
2847191420,3ptp4l23236-21hddtemp_smartct08:35:172
2847191420,3ptp4l0-21swapper/012:10:200
2847191420,1ptp4l28553-1kworker/2:2H07:36:512
1525399427,7cyclictest41-21ksoftirqd/309:31:093
15250994224,7cyclictest9-21ksoftirqd/008:05:120
15250994219,8cyclictest9-21ksoftirqd/009:50:510
15250994219,4cyclictest9-21ksoftirqd/010:59:590
2847191410,5ptp4l1525299cyclictest11:30:192
2847191410,5ptp4l0-21swapper/110:35:201
2847191410,4ptp4l29036-21/usr/sbin/munin11:05:131
2847191410,4ptp4l26469-21/usr/sbin/munin11:00:111
2847191410,4ptp4l26330-21/usr/sbin/munin08:40:271
2847191410,4ptp4l0-21swapper/212:13:542
2847191410,4ptp4l0-21swapper/211:25:022
2847191410,4ptp4l0-21swapper/210:19:202
2847191410,4ptp4l0-21swapper/209:41:492
2847191410,4ptp4l0-21swapper/209:16:172
2847191410,4ptp4l0-21swapper/208:54:492
2847191410,4ptp4l0-21swapper/208:32:352
2847191410,4ptp4l0-21swapper/208:22:112
2847191410,4ptp4l0-21swapper/208:15:122
2847191410,4ptp4l0-21swapper/112:35:201
2847191410,4ptp4l0-21swapper/112:35:201
2847191410,4ptp4l0-21swapper/112:20:101
2847191410,4ptp4l0-21swapper/112:08:481
2847191410,4ptp4l0-21swapper/110:31:241
2847191410,4ptp4l0-21swapper/110:29:581
2847191410,4ptp4l0-21swapper/107:55:191
2847191410,4ptp4l0-21swapper/010:36:190
2847191410,4ptp4l0-21swapper/009:55:170
2847191410,3ptp4l31485-21users08:50:291
2847191410,3ptp4l17960-21memory10:40:241
2847191410,3ptp4l17960-21memory10:40:231
2847191410,3ptp4l15402-21ls10:35:212
2847191410,3ptp4l14461-21iostat09:25:151
2847191410,3ptp4l0-21swapper/212:09:022
15250994119,7cyclictest9-21ksoftirqd/011:53:100
2847191400,4ptp4l22883-21taskset09:42:091
2847191400,4ptp4l11210-21switchtime10:25:262
2847191400,4ptp4l0-21swapper/211:58:532
2847191400,4ptp4l0-21swapper/211:15:242
2847191400,4ptp4l0-21swapper/211:06:062
2847191400,4ptp4l0-21swapper/210:50:162
2847191400,4ptp4l0-21swapper/210:10:192
2847191400,4ptp4l0-21swapper/210:08:272
2847191400,4ptp4l0-21swapper/210:01:432
2847191400,4ptp4l0-21swapper/209:35:192
2847191400,4ptp4l0-21swapper/209:35:192
2847191400,4ptp4l0-21swapper/209:20:372
2847191400,4ptp4l0-21swapper/209:06:422
2847191400,4ptp4l0-21swapper/209:06:422
2847191400,4ptp4l0-21swapper/208:43:182
2847191400,4ptp4l0-21swapper/208:03:252
2847191400,4ptp4l0-21swapper/207:51:102
2847191400,4ptp4l0-21swapper/207:45:232
2847191400,4ptp4l0-21swapper/111:50:241
2847191400,4ptp4l0-21swapper/111:32:431
2847191400,4ptp4l0-21swapper/109:31:171
2847191400,4ptp4l0-21swapper/108:55:581
2847191400,4ptp4l0-21swapper/108:35:241
2847191400,4ptp4l0-21swapper/108:21:251
2847191400,4ptp4l0-21swapper/107:45:221
2847191400,4ptp4l0-21swapper/011:55:140
2847191400,3ptp4l15023-21apt-get11:45:141
2847191400,3ptp4l0-21swapper/211:20:252
2847191400,3ptp4l0-21swapper/108:10:291
1525399409,7cyclictest41-21ksoftirqd/312:25:183
1525399402,3cyclictest121rcu_preempt07:50:313
1525399402,2cyclictest41-21ksoftirqd/309:07:473
1525399402,2cyclictest41-21ksoftirqd/309:07:473
1525099404,2cyclictest9-21ksoftirqd/012:05:230
15250994034,3cyclictest9-21ksoftirqd/010:15:000
2847191390,5ptp4l0-21swapper/210:30:092
2847191390,5ptp4l0-21swapper/209:00:212
2847191390,4ptp4l7283-21sed08:00:201
2847191390,4ptp4l0-21swapper/212:03:362
2847191390,4ptp4l0-21swapper/211:50:302
2847191390,4ptp4l0-21swapper/211:11:122
2847191390,4ptp4l0-21swapper/210:55:162
2847191390,4ptp4l0-21swapper/208:45:172
2847191390,4ptp4l0-21swapper/207:58:292
2847191390,4ptp4l0-21swapper/207:23:242
2847191390,4ptp4l0-21swapper/111:10:251
2847191390,4ptp4l0-21swapper/108:25:101
2847191390,3ptp4l29605-21cut07:40:151
2847191390,3ptp4l27878-21hddtemp_smartct08:45:191
2847191390,3ptp4l24974-21df07:30:171
2847191390,3ptp4l0-21swapper/211:46:222
2847191390,3ptp4l0-21swapper/209:25:172
2847191390,3ptp4l0-21swapper/207:14:082
2847191390,3ptp4l0-21swapper/110:06:111
2847191390,3ptp4l0-21swapper/108:05:031
2847191390,3ptp4l0-21swapper/107:35:311
2847191390,2ptp4l33-21ksoftirqd/209:45:252
2847191380,4ptp4l0-21swapper/207:28:222
2847191380,3ptp4l0-21swapper/208:05:242
2847191380,3ptp4l0-21swapper/207:30:012
28496913210,18phc2sys0-21swapper/307:05:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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