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2026-06-13 - 01:11
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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 rackdslot1.osadl.org (updated Fri Jun 12, 2026 12:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
176622990,5sleep00-21swapper/010:15:270
2703399692,25cyclictest0-21swapper/208:32:212
2703399670,31cyclictest27149-21taskset10:38:332
2703399660,38cyclictest26970-21chrt08:17:362
2703399660,35cyclictest6602-21taskset12:14:202
134491660,4ptp4l21639-21ntp_states08:05:243
2703399643,36cyclictest0-21swapper/209:05:092
2703399641,61cyclictest0-21swapper/212:20:282
2703399641,61cyclictest0-21swapper/210:45:292
2703399640,30cyclictest20206-21taskset10:22:562
2703399631,25cyclictest31622-21taskset08:28:032
2703399630,27cyclictest3949-21taskset08:38:182
2703399630,27cyclictest22466-21chrt08:08:482
2703399630,22cyclictest1057-21sensors_temp10:50:252
27382620,5sleep02743-21irqrtprio10:55:200
2703399620,35cyclictest24829-21taskset08:14:342
2703399620,32cyclictest10705-21taskset08:51:162
2703399620,27cyclictest1911-21taskset12:04:262
2703399620,27cyclictest15406-21chrt09:02:252
2703399620,24cyclictest21945-21systemctl10:25:242
134491610,4ptp4l0-21swapper/008:10:160
2703399600,30cyclictest13182-21taskset10:06:272
2703399600,28cyclictest6108-21taskset08:41:142
2703399600,27cyclictest13655-21taskset11:20:042
2703399600,27cyclictest13277-21chrt11:18:282
2703399600,26cyclictest4189-21chrt12:07:512
134491600,6ptp4l0-21swapper/207:09:432
134491600,4ptp4l0-21swapper/309:50:173
134491600,4ptp4l0-21swapper/010:10:190
2703399596,51cyclictest0-21swapper/209:20:492
2703399593,21cyclictest0-21swapper/211:48:472
2703399590,29cyclictest8197-21taskset07:35:432
2703399580,28cyclictest31595-21chrt11:57:122
2703399580,27cyclictest10840-21chrt10:00:532
2703399580,26cyclictest24708-21chrt10:31:472
134491580,4ptp4l0-21swapper/111:50:271
134491580,4ptp4l0-21swapper/107:46:261
2703399572,27cyclictest13109-21taskset08:57:392
2703399570,34cyclictest29283-21taskset10:41:102
2703399570,27cyclictest26829-21taskset09:26:232
2703399570,26cyclictest6361-21taskset11:03:082
2703399570,25cyclictest31241-21taskset07:18:012
2703299570,16cyclictest15761-21date07:55:001
134491570,3ptp4l0-21swapper/010:40:180
273612560,5sleep10-21swapper/110:39:591
134491560,4ptp4l0-21swapper/011:32:390
134491560,4ptp4l0-21swapper/007:15:220
134491560,3ptp4l0-21swapper/110:55:191
134491560,3ptp4l0-21swapper/110:53:251
325202550,6sleep00-21swapper/008:30:170
2703399551,26cyclictest15447-21taskset07:52:222
2703399550,25cyclictest24847-21chrt11:44:072
134491550,4ptp4l0-21swapper/008:29:270
134491550,11ptp4l0-21swapper/310:45:543
2703399530,34cyclictest22420-21taskset09:19:022
2703299536,6cyclictest0-21swapper/112:20:241
134491530,4ptp4l0-21swapper/309:55:303
134491530,4ptp4l0-21swapper/309:14:243
134491530,4ptp4l0-21swapper/309:14:243
134491530,4ptp4l0-21swapper/008:16:030
2703299522,6cyclictest0-21swapper/110:10:011
2703299521,15cyclictest9932-21ntp_states07:40:251
2703399510,24cyclictest20236-21taskset11:34:072
134491510,4ptp4l0-21swapper/309:21:513
134491510,4ptp4l0-21swapper/009:49:040
134491510,3ptp4l0-21swapper/011:09:010
2703299496,6cyclictest0-21swapper/110:29:391
134491490,9ptp4l0-21swapper/008:00:240
134491490,4ptp4l0-21swapper/310:15:033
134491490,4ptp4l0-21swapper/007:24:280
134491490,12ptp4l0-21swapper/307:59:583
2703299484,6cyclictest23790-21cat08:10:231
2703299481,5cyclictest25-21ksoftirqd/112:30:221
134491480,5ptp4l0-21swapper/307:07:173
134491480,4ptp4l0-21swapper/309:29:373
134491480,4ptp4l0-21swapper/308:47:543
134491480,4ptp4l0-21swapper/011:04:220
134491480,3ptp4l0-21swapper/308:53:523
134491480,3ptp4l0-21swapper/307:44:233
134491480,3ptp4l0-21swapper/007:53:470
134491480,11ptp4l0-21swapper/011:14:010
134491470,4ptp4l0-21swapper/310:20:173
134491470,4ptp4l0-21swapper/310:09:563
134491470,4ptp4l0-21swapper/309:19:043
134491470,4ptp4l0-21swapper/309:03:193
134491470,4ptp4l0-21swapper/307:19:133
134491470,4ptp4l0-21swapper/007:43:070
134491470,3ptp4l0-21swapper/310:03:283
2703299466,6cyclictest0-21swapper/111:58:171
2703299461,6cyclictest21034-21basename11:35:171
134491460,4ptp4l0-21swapper/309:33:373
134491460,4ptp4l0-21swapper/108:29:201
134491460,4ptp4l0-21swapper/108:08:261
134491460,3ptp4l33-21ksoftirqd/212:19:122
134491460,3ptp4l0-21swapper/111:04:241
134491460,3ptp4l0-21swapper/008:35:500
2703299450,6cyclictest0-21swapper/107:20:191
134491450,3ptp4l0-21swapper/112:02:171
134491450,11ptp4l0-21swapper/310:35:123
2703299440,6cyclictest25-21ksoftirqd/110:03:121
134491440,9ptp4l0-21swapper/209:49:552
134491440,7ptp4l9-21ksoftirqd/011:20:070
134491440,5ptp4l0-21swapper/311:38:153
134491440,4ptp4l0-21swapper/008:41:030
134491440,4ptp4l0-21swapper/007:49:490
134491440,3ptp4l0-21swapper/111:10:421
134491440,3ptp4l0-21swapper/108:24:581
2703299436,6cyclictest25-21ksoftirqd/108:31:451
2703299431,5cyclictest0-21swapper/108:55:361
134691430,11getstats0-21swapper/311:25:383
134491430,6ptp4l0-21swapper/310:50:113
134491430,4ptp4l0-21swapper/207:40:152
134491430,3ptp4l0-21swapper/209:10:192
134491430,3ptp4l0-21swapper/209:10:192
2703299422,5cyclictest0-21swapper/108:49:241
2703299422,4cyclictest0-21swapper/109:55:241
2703299421,5cyclictest25-21ksoftirqd/110:20:121
134491420,9ptp4l0-21swapper/211:13:252
134491420,5ptp4l11729-21diskstats10:05:140
134491420,5ptp4l0-21swapper/012:35:250
134491420,5ptp4l0-21swapper/009:24:290
134491420,4ptp4l4368-21apt-get08:40:123
134491420,4ptp4l41-21ksoftirqd/309:35:153
134491420,4ptp4l21478-21memory08:05:210
134491420,4ptp4l1944-21apt-get08:35:113
134491420,4ptp4l1473-21ls12:00:290
134491420,4ptp4l0-21swapper/312:12:283
134491420,4ptp4l0-21swapper/012:08:190
134491410,9ptp4l0-21swapper/008:57:510
134491410,6ptp4l9-21ksoftirqd/009:50:170
134491410,5ptp4l30345-21iostat_ios11:55:180
134491410,5ptp4l0-21swapper/308:30:203
134491410,5ptp4l0-21swapper/107:55:191
134491410,5ptp4l0-21swapper/010:00:110
134491410,4ptp4l9899-21ls08:50:201
134491410,4ptp4l8959-21apt-get08:50:130
134491410,4ptp4l30091-21perl09:35:150
134491410,4ptp4l27939-21iostat09:30:182
134491410,4ptp4l16691-21iostat_ios12:35:161
134491410,4ptp4l0-21swapper/111:15:211
134491410,4ptp4l0-21swapper/010:45:200
134491410,4ptp4l0-21swapper/009:40:150
134491410,4ptp4l0-21swapper/008:20:160
134491410,3ptp4l17475-21ls11:25:252
134491410,2ptp4l0-21swapper/208:45:302
2703399400,23cyclictest1301-21snmpd07:30:292
2703299400,2cyclictest134491ptp4l07:20:001
134491400,6ptp4l0-21swapper/207:48:472
134491400,5ptp4l6806-21latency_hist12:15:010
134491400,5ptp4l2833-21awk07:25:282
134491400,5ptp4l2199-21diskstats09:45:151
134491400,5ptp4l0-21swapper/310:40:223
134491400,5ptp4l0-21swapper/210:11:082
134491400,5ptp4l0-21swapper/012:23:190
134491400,5ptp4l0-21swapper/011:45:180
134491400,4ptp4l822-21ntp_states10:50:230
134491400,4ptp4l4615-21apt-get12:10:101
134491400,4ptp4l18535-21diskstats08:00:141
134491400,4ptp4l14527-21memory09:00:211
134491400,4ptp4l12547-21/usr/sbin/munin11:15:210
134491400,4ptp4l0-21swapper/312:09:483
134491400,4ptp4l0-21swapper/310:29:583
134491400,4ptp4l0-21swapper/309:40:153
134491400,4ptp4l0-21swapper/309:05:223
134491400,4ptp4l0-21swapper/308:55:483
134491400,4ptp4l0-21swapper/308:25:243
134491400,4ptp4l0-21swapper/307:10:243
134491400,4ptp4l0-21swapper/211:05:432
134491400,4ptp4l0-21swapper/207:10:202
134491400,4ptp4l0-21swapper/110:45:141
134491400,4ptp4l0-21swapper/109:34:591
134491400,4ptp4l0-21swapper/107:25:321
134491400,4ptp4l0-21swapper/012:26:220
134491400,4ptp4l0-21swapper/010:27:360
134491400,4ptp4l0-21swapper/010:24:350
134491400,4ptp4l0-21swapper/009:29:430
134491400,4ptp4l0-21swapper/009:01:310
134491400,3ptp4l26460-21python08:15:261
134491400,3ptp4l23231-21diskstats10:30:130
27034993934,3cyclictest41-21ksoftirqd/310:10:103
2703299390,5cyclictest25-21ksoftirqd/109:15:221
134491390,5ptp4l19354-21/usr/sbin/munin09:10:240
134491390,5ptp4l19354-21/usr/sbin/munin09:10:240
134491390,5ptp4l0-21swapper/311:30:263
134491390,5ptp4l0-21swapper/107:35:251
134491390,5ptp4l0-21swapper/008:47:330
134491390,4ptp4l14944-21ntp_states12:30:223
134491390,4ptp4l0-21swapper/312:25:273
134491390,4ptp4l0-21swapper/312:15:203
134491390,4ptp4l0-21swapper/307:30:203
134491390,4ptp4l0-21swapper/307:28:583
134491390,4ptp4l0-21swapper/210:58:472
134491390,4ptp4l0-21swapper/209:35:542
134491390,4ptp4l0-21swapper/208:24:282
134491390,4ptp4l0-21swapper/207:56:072
134491390,4ptp4l0-21swapper/207:20:552
134491390,4ptp4l0-21swapper/111:40:291
134491390,4ptp4l0-21swapper/111:25:271
134491390,4ptp4l0-21swapper/110:32:001
134491390,4ptp4l0-21swapper/109:40:141
134491390,4ptp4l0-21swapper/012:31:330
134491390,4ptp4l0-21swapper/012:19:370
134491390,4ptp4l0-21swapper/011:40:200
134491390,4ptp4l0-21swapper/011:36:480
134491390,4ptp4l0-21swapper/010:38:390
134491390,4ptp4l0-21swapper/009:30:010
134491390,4ptp4l0-21swapper/009:05:100
134491390,4ptp4l0-21swapper/007:55:210
134491390,4ptp4l0-21swapper/007:12:320
134491390,3ptp4l6805-21apt-get09:55:112
134491390,3ptp4l5641-21/usr/sbin/munin07:30:320
134491390,3ptp4l2999-21meminfo08:35:201
134491390,3ptp4l29880-21sh09:35:131
134491390,3ptp4l2473-21df12:05:131
134491390,3ptp4l20891-21hddtemp_smartct09:15:170
134491390,3ptp4l0-21swapper/011:53:240
134491390,3ptp4l0-21swapper/007:25:360
134491390,2ptp4l16811-21ls09:05:191
2703399388,29cyclictest0-21swapper/210:15:192
27032993835,2cyclictest231rcuc/109:20:171
134491380,4ptp4l0-21swapper/312:35:213
134491380,4ptp4l0-21swapper/312:20:223
134491380,4ptp4l0-21swapper/311:49:243
134491380,4ptp4l0-21swapper/311:40:123
134491380,4ptp4l0-21swapper/311:15:133
134491380,4ptp4l0-21swapper/310:30:103
134491380,4ptp4l0-21swapper/308:20:123
134491380,4ptp4l0-21swapper/308:18:413
134491380,4ptp4l0-21swapper/308:10:063
134491380,4ptp4l0-21swapper/308:02:343
134491380,4ptp4l0-21swapper/307:54:073
134491380,4ptp4l0-21swapper/307:45:323
134491380,4ptp4l0-21swapper/307:23:063
134491380,4ptp4l0-21swapper/212:36:182
134491380,4ptp4l0-21swapper/211:51:252
134491380,4ptp4l0-21swapper/209:50:152
134491380,4ptp4l0-21swapper/209:41:392
134491380,4ptp4l0-21swapper/208:00:572
134491380,4ptp4l0-21swapper/112:27:441
134491380,4ptp4l0-21swapper/112:20:011
134491380,4ptp4l0-21swapper/111:45:161
134491380,4ptp4l0-21swapper/111:25:001
134491380,4ptp4l0-21swapper/109:50:021
134491380,4ptp4l0-21swapper/109:25:151
134491380,4ptp4l0-21swapper/108:43:211
134491380,4ptp4l0-21swapper/107:30:291
134491380,4ptp4l0-21swapper/107:10:141
134491380,4ptp4l0-21swapper/011:25:150
134491380,4ptp4l0-21swapper/009:55:190
134491380,3ptp4l14393-21iostat12:30:162
134491380,3ptp4l0-21swapper/111:32:031
134491380,3ptp4l0-21swapper/111:08:581
134491380,3ptp4l0-21swapper/110:10:221
134491380,3ptp4l0-21swapper/007:37:140
2703299372,5cyclictest25-21ksoftirqd/109:10:201
2703299372,5cyclictest25-21ksoftirqd/109:10:201
134491370,4ptp4l0-21swapper/311:59:453
134491370,4ptp4l0-21swapper/311:11:073
134491370,4ptp4l0-21swapper/310:56:263
134491370,4ptp4l0-21swapper/309:45:503
134491370,4ptp4l0-21swapper/211:37:282
134491370,4ptp4l0-21swapper/110:41:441
134491370,3ptp4l16595-21ps10:15:191
134491370,3ptp4l0-21swapper/311:00:123
134491370,3ptp4l0-21swapper/307:35:383
134491370,3ptp4l0-21swapper/212:25:192
134491360,4ptp4l0-21swapper/311:20:073
134491350,4ptp4l0-21swapper/311:06:423
134491300,3ptp4l0-21swapper/311:50:373
27034992925,2cyclictest41-21ksoftirqd/312:00:013
1378912415,3phc2sys9-21ksoftirqd/007:05:230
246772124,4sleep10-21swapper/107:05:051
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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