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2026-06-24 - 11:06
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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 Jun 24, 2026 00:45:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
207121180,4sleep02073-21df_abs19:05:140
134491670,22ptp4l30307-21/usr/sbin/munin22:25:183
134491650,3ptp4l5545-21ls22:40:213
4233996329,4cyclictest9-21ksoftirqd/022:15:320
134491620,5ptp4l0-21swapper/219:09:272
134491620,17ptp4l3247-21python19:05:241
423499609,17cyclictest22436-21seq23:17:021
423499609,13cyclictest22556-21seq20:59:501
423499608,12cyclictest31559-21taskset21:16:301
134491600,16ptp4l0-21swapper/219:57:012
423499599,13cyclictest8741-21taskset20:29:361
423499599,11cyclictest23431-21seq00:29:401
423499598,11cyclictest3826-21chrt22:35:271
423499598,11cyclictest24722-21taskset21:02:101
423499596,11cyclictest1993-21chrt23:44:071
4234995910,11cyclictest25081-21cat22:14:561
134491590,4ptp4l0-21swapper/319:10:173
423499589,17cyclictest29368-21seq22:20:501
423499589,12cyclictest22347-21taskset19:46:161
423499589,11cyclictest8739-21seq21:37:451
423499588,12cyclictest13382-21chrt21:48:091
423499587,12cyclictest22729-21cat22:09:551
423499586,11cyclictest27048-21chrt19:56:571
24322580,6sleep341-21ksoftirqd/319:05:163
134491580,4ptp4l0-21swapper/320:03:263
423499579,17cyclictest27103-21seq22:16:251
423499579,11cyclictest3903-21chrt20:16:511
423499578,11cyclictest18276-21taskset19:40:061
423499578,11cyclictest15603-21taskset20:44:011
423499577,11cyclictest6457-21chrt23:51:421
423499577,11cyclictest11279-21chrt00:01:371
423499575,11cyclictest6228-21taskset21:32:441
423499575,11cyclictest15633-21chrt21:52:351
423499574,11cyclictest163402sleep100:12:201
4234995710,12cyclictest29568-21seq23:31:261
4234995710,10cyclictest17679-21seq19:35:341
4233995729,4cyclictest9-21ksoftirqd/019:20:230
134491570,5ptp4l0-21swapper/320:14:393
134491570,4ptp4l24223-21phc2sys-jitter22:10:233
134491570,4ptp4l0-21swapper/220:52:362
134491570,3ptp4l0-21swapper/022:46:020
4235995623,5cyclictest33-21ksoftirqd/200:10:152
4235995621,5cyclictest33-21ksoftirqd/223:38:072
423499569,15cyclictest4402-21seq23:49:521
423499569,11cyclictest32128-21seq23:39:521
423499569,11cyclictest13095-21seq20:36:311
423499568,11cyclictest25724-21seq00:34:371
423499567,11cyclictest6136-21vmstat20:20:381
4234995610,17cyclictest20104-21seq20:52:481
4233995630,4cyclictest9-21ksoftirqd/022:05:270
4235995522,4cyclictest33-21ksoftirqd/221:27:442
423499559,12cyclictest20150-21taskset22:01:191
423499559,10cyclictest10894-21seq21:40:461
423499558,11cyclictest1708-21seq22:32:371
423499557,9cyclictest8466-21chrt19:18:091
423399555,8cyclictest9-21ksoftirqd/019:15:150
423399554,9cyclictest9-21ksoftirqd/019:10:210
423399552,6cyclictest9-21ksoftirqd/019:50:010
4233995525,4cyclictest9-21ksoftirqd/019:50:270
423399550,7cyclictest18190-21sendmail-msp22:00:000
134491550,3ptp4l0-21swapper/000:39:220
4235995419,4cyclictest33-21ksoftirqd/200:36:522
423499549,11cyclictest29423-21seq20:02:411
423499549,11cyclictest27317-21runrttasks23:29:491
423499548,11cyclictest8809-21taskset23:57:251
423499548,10cyclictest21012-21chrt00:23:031
423499548,10cyclictest21012-21chrt00:23:031
423499547,12cyclictest31854-21taskset22:28:091
423499547,11cyclictest3793-21chrt21:25:591
423499546,11cyclictest1770-21seq20:14:411
423499546,10cyclictest15572-21chrt23:02:231
423399546,8cyclictest9-21ksoftirqd/023:30:140
423399545,8cyclictest9-21ksoftirqd/022:25:240
423399545,8cyclictest9-21ksoftirqd/020:25:270
423399545,8cyclictest9-21ksoftirqd/020:10:160
423399544,8cyclictest9-21ksoftirqd/023:45:000
423399544,8cyclictest9-21ksoftirqd/023:10:150
423399544,8cyclictest9-21ksoftirqd/019:35:300
423399543,6cyclictest9-21ksoftirqd/022:45:000
4233995422,7cyclictest9-21ksoftirqd/021:36:480
423399540,14cyclictest9-21ksoftirqd/020:15:250
134491540,3ptp4l0-21swapper/300:16:363
4235995327,7cyclictest33-21ksoftirqd/221:32:372
4235995324,3cyclictest33-21ksoftirqd/219:41:042
4235995323,4cyclictest33-21ksoftirqd/223:52:332
4235995322,9cyclictest33-21ksoftirqd/223:03:352
4235995322,5cyclictest33-21ksoftirqd/221:00:222
4235995318,6cyclictest33-21ksoftirqd/219:30:252
4235995318,4cyclictest33-21ksoftirqd/219:37:582
4235995316,10cyclictest33-21ksoftirqd/222:35:182
423499539,11cyclictest10859-21taskset20:32:171
423499538,11cyclictest6064-21taskset19:11:501
423499538,11cyclictest1437-21chrt21:21:011
423499538,11cyclictest13221-21chrt22:56:581
423499537,12cyclictest27467-21chrt21:10:021
423499536,9cyclictest13144-21taskset19:29:011
423499534,9cyclictest25204-21chrt21:05:131
4234995311,5cyclictest25-21ksoftirqd/119:30:211
423399535,8cyclictest9-21ksoftirqd/020:55:000
423399533,5cyclictest9-21ksoftirqd/023:25:220
134491530,5ptp4l0-21swapper/320:28:543
134491530,4ptp4l0-21swapper/220:34:432
134491530,4ptp4l0-21swapper/200:30:222
4235995224,3cyclictest33-21ksoftirqd/219:47:242
4235995223,3cyclictest33-21ksoftirqd/223:25:172
4235995222,4cyclictest33-21ksoftirqd/221:55:572
4235995221,5cyclictest33-21ksoftirqd/221:52:122
4235995221,4cyclictest33-21ksoftirqd/223:17:412
4235995221,4cyclictest33-21ksoftirqd/200:28:452
4235995220,5cyclictest33-21ksoftirqd/220:40:192
4235995218,7cyclictest33-21ksoftirqd/219:30:012
423499528,11cyclictest31816-21chrt20:08:561
423499528,11cyclictest18674-21chrt00:17:451
423499528,10cyclictest8616-21chrt22:46:471
423499526,10cyclictest20071-21chrt23:11:101
423499525,9cyclictest0-21swapper/100:09:221
423499525,11cyclictest1317-21runrttasks21:56:311
423399526,8cyclictest1959-21sed21:25:000
423399525,7cyclictest9-21ksoftirqd/021:45:150
423399524,8cyclictest9-21ksoftirqd/022:31:000
423399524,8cyclictest9-21ksoftirqd/000:30:010
423399523,5cyclictest0-21swapper/022:00:240
4233995229,3cyclictest9-21ksoftirqd/000:30:360
423399522,6cyclictest9-21ksoftirqd/021:10:410
134491520,4ptp4l0-21swapper/321:26:183
4235995123,7cyclictest33-21ksoftirqd/220:28:352
4235995122,3cyclictest33-21ksoftirqd/221:43:272
4235995121,4cyclictest33-21ksoftirqd/223:46:572
4235995121,3cyclictest33-21ksoftirqd/223:08:382
4235995120,6cyclictest33-21ksoftirqd/200:20:002
4235995120,4cyclictest33-21ksoftirqd/221:45:072
4235995119,4cyclictest33-21ksoftirqd/223:20:192
4235995119,4cyclictest33-21ksoftirqd/223:20:192
4235995117,6cyclictest33-21ksoftirqd/223:10:262
4235995117,6cyclictest33-21ksoftirqd/221:15:212
423499519,19cyclictest10965-21taskset22:52:271
423499519,11cyclictest6270-21chrt22:41:091
4234995110,18cyclictest24903-21seq19:53:551
423399516,5cyclictest9-21ksoftirqd/021:40:250
423399514,7cyclictest0-21swapper/023:40:010
423399514,10cyclictest9-21ksoftirqd/020:20:290
423399513,5cyclictest21171-21latency_hist00:25:010
423399513,5cyclictest21171-21latency_hist00:25:010
423399513,5cyclictest0-21swapper/019:55:140
423399510,6cyclictest20837-21df_abs23:15:140
134491510,4ptp4l0-21swapper/322:56:143
134491510,4ptp4l0-21swapper/319:59:483
134491510,4ptp4l0-21swapper/222:02:132
134491510,3ptp4l0-21swapper/300:35:243
4235995035,3cyclictest33-21ksoftirqd/220:57:562
4235995024,7cyclictest33-21ksoftirqd/222:34:272
4235995023,7cyclictest33-21ksoftirqd/220:15:202
4235995023,4cyclictest33-21ksoftirqd/223:30:022
4235995023,4cyclictest33-21ksoftirqd/220:04:522
4235995020,3cyclictest33-21ksoftirqd/222:40:182
4235995018,8cyclictest33-21ksoftirqd/220:20:252
4235995017,6cyclictest33-21ksoftirqd/222:10:162
4235995017,4cyclictest33-21ksoftirqd/200:00:002
4235995016,6cyclictest33-21ksoftirqd/222:15:232
4235995016,6cyclictest33-21ksoftirqd/220:10:232
423499508,11cyclictest27792-21taskset00:36:411
423499507,11cyclictest17718-21chrt23:05:321
423499506,10cyclictest24849-21chrt23:22:331
423499506,10cyclictest24849-21chrt23:22:321
423399505,9cyclictest9-21ksoftirqd/021:00:160
423399504,5cyclictest0-21swapper/019:40:190
423399503,6cyclictest9-21ksoftirqd/021:15:290
423399502,7cyclictest9-21ksoftirqd/020:30:280
423399500,6cyclictest9-21ksoftirqd/000:10:130
423399500,6cyclictest3317-21ntp_states22:35:220
134491500,4ptp4l0-21swapper/323:06:303
134491500,4ptp4l0-21swapper/220:35:402
4235994917,3cyclictest33-21ksoftirqd/222:55:312
4235994916,6cyclictest33-21ksoftirqd/222:07:562
4235994916,4cyclictest33-21ksoftirqd/223:43:332
4235994915,6cyclictest33-21ksoftirqd/220:10:002
4235994912,5cyclictest33-21ksoftirqd/222:20:232
4235994911,6cyclictest33-21ksoftirqd/219:52:022
423399495,9cyclictest9-21ksoftirqd/022:55:270
423399495,8cyclictest9-21ksoftirqd/022:50:280
423399493,7cyclictest9-21ksoftirqd/022:20:160
423399493,10cyclictest9-21ksoftirqd/019:25:160
4233994923,5cyclictest9-21ksoftirqd/022:13:230
4233994922,5cyclictest9-21ksoftirqd/021:54:370
134491490,3ptp4l0-21swapper/320:30:203
4235994818,3cyclictest33-21ksoftirqd/200:21:232
4235994818,3cyclictest33-21ksoftirqd/200:21:232
4235994817,6cyclictest33-21ksoftirqd/220:45:162
4235994815,5cyclictest33-21ksoftirqd/221:20:222
4235994814,5cyclictest33-21ksoftirqd/200:05:192
4235994814,4cyclictest33-21ksoftirqd/221:08:562
4235994813,10cyclictest33-21ksoftirqd/222:45:222
4235994810,7cyclictest33-21ksoftirqd/200:00:092
423499486,10cyclictest17055-21/usr/sbin/munin20:45:231
423399486,9cyclictest9-21ksoftirqd/020:05:160
423399482,5cyclictest0-21swapper/000:00:010
134491480,4ptp4l0-21swapper/000:08:590
4235994730,15cyclictest33-21ksoftirqd/221:15:002
4235994720,3cyclictest33-21ksoftirqd/219:20:142
4235994716,4cyclictest33-21ksoftirqd/222:28:592
4235994716,4cyclictest33-21ksoftirqd/221:39:322
423399474,7cyclictest9-21ksoftirqd/023:05:190
423399473,7cyclictest9-21ksoftirqd/020:35:240
423399473,7cyclictest0-21swapper/023:00:190
423399473,6cyclictest9-21ksoftirqd/020:55:300
423399473,5cyclictest9-21ksoftirqd/023:55:160
423399472,6cyclictest9-21ksoftirqd/020:45:120
423399471,5cyclictest0-21swapper/021:25:130
423399470,7cyclictest9-21ksoftirqd/021:30:170
134491470,4ptp4l0-21swapper/321:19:213
134491470,4ptp4l0-21swapper/320:53:553
134491470,3ptp4l0-21swapper/320:55:153
4236994641,3cyclictest11650-21fschecks_count20:35:163
4235994612,8cyclictest33-21ksoftirqd/219:10:202
423399465,9cyclictest13862-21df_abs20:40:140
4233994626,3cyclictest9-21ksoftirqd/000:19:070
4233994621,6cyclictest9-21ksoftirqd/023:47:220
423399461,6cyclictest9-21ksoftirqd/023:50:130
423399460,6cyclictest9-21ksoftirqd/020:02:080
134491460,4ptp4l0-21swapper/320:24:133
134491460,3ptp4l0-21swapper/321:58:033
134491460,11ptp4l8208-21head19:15:292
4235994516,4cyclictest33-21ksoftirqd/222:50:282
423499455,10cyclictest1317-21runrttasks19:22:421
423399443,6cyclictest9-21ksoftirqd/021:05:190
423399441,5cyclictest9-21ksoftirqd/019:35:010
134491440,7ptp4l0-21swapper/320:16:453
134491440,4ptp4l12013-21apt-get00:05:173
134491440,4ptp4l0-21swapper/319:51:403
423399432,5cyclictest9-21ksoftirqd/023:20:160
423399432,5cyclictest9-21ksoftirqd/023:20:160
134491420,9ptp4l0-21swapper/319:28:433
134491420,7ptp4l0-21swapper/321:45:163
134491420,4ptp4l9190-21apt-get21:40:123
134491420,4ptp4l0-21swapper/323:10:143
134491410,5ptp4l0-21swapper/322:20:123
134491410,5ptp4l0-21swapper/321:20:123
134491400,9ptp4l0-21swapper/322:15:103
134491400,4ptp4l0-21swapper/323:45:233
134491400,4ptp4l0-21swapper/322:50:523
134491400,4ptp4l0-21swapper/321:30:213
134491400,4ptp4l0-21swapper/321:05:263
134491400,4ptp4l0-21swapper/319:42:533
134491400,4ptp4l0-21swapper/319:15:193
134491400,4ptp4l0-21swapper/300:00:133
134491390,4ptp4l41-21ksoftirqd/322:05:003
134491390,4ptp4l0-21swapper/323:20:233
134491390,4ptp4l0-21swapper/323:20:223
134491390,4ptp4l0-21swapper/323:00:273
134491390,4ptp4l0-21swapper/322:30:183
134491390,4ptp4l0-21swapper/322:05:143
134491390,4ptp4l0-21swapper/321:50:413
134491390,4ptp4l0-21swapper/320:49:143
134491390,4ptp4l0-21swapper/319:45:113
134491390,4ptp4l0-21swapper/319:35:163
134491390,4ptp4l0-21swapper/300:25:233
134491390,3ptp4l7541-21iostat_ios23:55:203
134491380,5ptp4l0-21swapper/323:30:243
134491380,4ptp4l0-21swapper/323:35:143
134491380,4ptp4l0-21swapper/323:25:163
134491380,4ptp4l0-21swapper/323:15:153
134491380,4ptp4l0-21swapper/322:35:213
134491380,4ptp4l0-21swapper/321:35:263
134491380,4ptp4l0-21swapper/320:40:173
134491380,4ptp4l0-21swapper/319:20:253
134491380,4ptp4l0-21swapper/300:30:233
134491380,4ptp4l0-21swapper/300:20:183
134491380,4ptp4l0-21swapper/300:20:183
134491380,3ptp4l0-21swapper/320:05:253
134491380,3ptp4l0-21swapper/319:30:133
134491370,4ptp4l0-21swapper/323:50:263
134491370,4ptp4l0-21swapper/323:41:373
134491370,4ptp4l0-21swapper/321:10:203
134491370,4ptp4l0-21swapper/321:00:193
134491370,3ptp4l0-21swapper/322:45:223
134491370,3ptp4l0-21swapper/300:10:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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