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2025-11-18 - 14:04
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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 Tue Nov 18, 2025 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
258721410,6sleep31986199cyclictest00:15:243
2847191730,5ptp4l0-21swapper/022:10:210
2847191700,4ptp4l0-21swapper/022:20:270
2847191700,4ptp4l0-21swapper/022:20:270
1986099709,58cyclictest0-21swapper/220:45:212
19860997014,11cyclictest3239-21chrt00:16:352
19860996714,12cyclictest8686-21chrt22:12:142
19860996714,11cyclictest5706-21chrt00:23:222
2847191660,4ptp4l0-21swapper/322:10:283
19860996613,19cyclictest8003-21chrt19:52:432
19860996613,12cyclictest20587-21chrt21:30:032
19860996613,12cyclictest1583-21chrt21:56:032
19860996513,11cyclictest1929-21taskset23:07:562
123842650,3sleep20-21swapper/221:10:252
19860996413,11cyclictest29923-21chrt21:50:132
19860996413,11cyclictest207-21systemd-journal20:25:002
19860996413,10cyclictest29567-21taskset20:40:082
1986099638,13cyclictest2847191ptp4l19:25:162
1986099629,51cyclictest0-21swapper/219:35:012
19860996214,10cyclictest18403-21chrt22:35:062
2847191610,4ptp4l0-21swapper/322:05:263
19860996112,11cyclictest24323-21sed19:20:002
19860996018,11cyclictest10934-21taskset22:16:272
19860996017,11cyclictest16632-21chrt23:39:572
19860996017,10cyclictest5983-21taskset20:56:572
19860996013,11cyclictest17836-21chrt22:30:492
19860995917,10cyclictest29689-21taskset22:58:252
2847191580,5ptp4l0-21swapper/323:35:213
2847191580,5ptp4l0-21swapper/319:07:193
2847191580,3ptp4l0-21swapper/323:45:383
2847191580,3ptp4l0-21swapper/323:25:423
2847191580,3ptp4l0-21swapper/323:25:423
1986099589,11cyclictest24140-21cat20:25:292
1986099588,11cyclictest1174-21latency_hist19:40:012
19860995817,9cyclictest10379-21taskset00:33:532
19860995817,16cyclictest9429-21taskset23:24:082
2847191570,4ptp4l0-21swapper/323:12:483
2847191570,4ptp4l0-21swapper/320:05:303
2847191570,4ptp4l0-21swapper/000:25:580
2847191570,3ptp4l0-21swapper/321:34:563
2847191570,3ptp4l0-21swapper/223:41:492
19860995717,10cyclictest12599-21taskset00:37:532
19860995716,10cyclictest14065-21taskset23:34:232
19860995713,10cyclictest4336-21runrttasks23:11:142
2847191560,4ptp4l0-21swapper/321:44:273
2847191560,4ptp4l0-21swapper/021:40:230
2847191560,4ptp4l0-21swapper/021:34:060
2847191560,3ptp4l0-21swapper/322:35:263
2847191560,3ptp4l0-21swapper/322:17:103
1986099568,14cyclictest11252-21idleruntime20:00:182
19860995617,11cyclictest13791-21chrt22:25:112
19860995616,10cyclictest29217-21taskset20:38:482
19860995614,9cyclictest30856-21taskset00:08:002
19860995611,11cyclictest294762sleep221:47:322
19860995610,11cyclictest27575-21ntp_states00:00:232
2847191550,4ptp4l0-21swapper/323:04:383
2847191550,4ptp4l0-21swapper/322:44:313
2847191550,4ptp4l0-21swapper/321:48:323
2847191550,4ptp4l0-21swapper/319:40:273
2847191550,3ptp4l0-21swapper/320:59:313
2847191550,3ptp4l0-21swapper/000:03:000
2847191550,11ptp4l0-21swapper/121:20:231
2847191550,11ptp4l0-21swapper/121:20:231
19860995512,11cyclictest15593-21taskset20:10:082
19860995512,11cyclictest15593-21taskset20:10:082
2847191540,4ptp4l0-21swapper/323:58:043
2847191540,4ptp4l0-21swapper/323:09:013
2847191540,4ptp4l0-21swapper/320:52:523
2847191540,4ptp4l0-21swapper/319:52:343
2847191540,4ptp4l0-21swapper/121:52:181
19860995417,10cyclictest5623-21chrt19:46:492
19860995416,10cyclictest21632-21chrt19:11:062
19860995411,10cyclictest23089-21timerwakeupswit23:50:312
2847191530,4ptp4l0-21swapper/322:54:393
2847191530,4ptp4l0-21swapper/322:30:343
2847191530,4ptp4l0-21swapper/319:21:073
2847191530,4ptp4l0-21swapper/319:21:073
2847191530,4ptp4l0-21swapper/300:04:203
2847191530,4ptp4l0-21swapper/000:39:290
2847191530,3ptp4l0-21swapper/320:35:203
2847191530,12ptp4l0-21swapper/321:35:193
1986099536,10cyclictest0-21swapper/222:50:172
19860995317,10cyclictest4251-21taskset22:04:292
2847191520,4ptp4l0-21swapper/323:40:573
19860995215,10cyclictest6917-21taskset23:16:582
19860995212,11cyclictest178392sleep221:22:332
19860995212,11cyclictest178392sleep221:22:332
2847191510,4ptp4l0-21swapper/323:51:533
2847191510,4ptp4l0-21swapper/123:37:031
2847191510,4ptp4l0-21swapper/122:23:471
2847191510,4ptp4l0-21swapper/122:23:471
2847191510,4ptp4l0-21swapper/000:06:410
2847191510,3ptp4l0-21swapper/322:47:303
2847191510,3ptp4l0-21swapper/320:27:333
2847191510,10ptp4l17951-21hddtemp_smartct19:05:171
19860995117,16cyclictest22601-21taskset22:42:202
19860995111,8cyclictest25256-21apt-get21:40:132
19860995110,14cyclictest2847191ptp4l22:20:252
19860995110,14cyclictest2847191ptp4l22:20:252
2847191500,9ptp4l18458-21ls19:05:210
2847191500,5ptp4l0-21swapper/219:07:192
2847191500,4ptp4l0-21swapper/300:33:193
19860995014,11cyclictest9021-21awk19:55:212
19860995014,11cyclictest24914-21taskset21:39:102
2847191490,3ptp4l0-21swapper/321:55:573
19860994913,10cyclictest24380-21cat23:55:182
2847191480,4ptp4l0-21swapper/021:27:180
2847191480,3ptp4l0-21swapper/319:57:373
2847191480,3ptp4l0-21swapper/100:10:291
2847191480,12ptp4l17273-21fschecks_count23:40:200
19860994813,7cyclictest9754-21apt-get23:25:162
19860994813,7cyclictest9754-21apt-get23:25:162
19860994812,32cyclictest26265-21which20:30:262
2847191470,4ptp4l0-21swapper/320:42:033
2847191470,4ptp4l0-21swapper/019:28:310
2847191470,3ptp4l0-21swapper/322:00:223
2847191460,8ptp4l0-21swapper/320:13:503
2847191460,8ptp4l0-21swapper/320:13:493
2847191460,4ptp4l1460-21apt-get19:40:150
2847191460,4ptp4l0-21swapper/023:59:160
2847191460,4ptp4l0-21swapper/000:23:560
2847191460,3ptp4l0-21swapper/320:47:373
2847191460,3ptp4l0-21swapper/300:09:293
2847191460,3ptp4l0-21swapper/122:13:501
1986099469,34cyclictest0-21swapper/222:45:222
2847191450,9ptp4l0-21swapper/020:51:310
2847191450,4ptp4l30170-21ls19:30:213
2847191450,4ptp4l24041-21meminfo22:45:250
2847191450,4ptp4l11264-21ls23:25:310
2847191450,4ptp4l11264-21ls23:25:310
2847191450,4ptp4l0-21swapper/323:31:543
2847191450,4ptp4l0-21swapper/022:38:080
2847191450,3ptp4l31488-21apt-get00:10:110
2847191440,9ptp4l0-21swapper/019:50:010
2847191440,4ptp4l0-21swapper/321:23:433
2847191440,4ptp4l0-21swapper/321:23:433
2847191440,4ptp4l0-21swapper/119:31:001
2847191440,4ptp4l0-21swapper/023:35:040
2847191440,4ptp4l0-21swapper/000:15:260
2847191440,3ptp4l8083-21ls21:00:290
2847191440,3ptp4l31099-21ls20:40:290
2847191440,3ptp4l0-21swapper/023:21:120
2847191440,10ptp4l0-21swapper/020:19:560
2847191430,6ptp4l0-21swapper/300:20:223
2847191430,4ptp4l6508-21apt-get21:00:142
2847191430,4ptp4l384-21hddtemp_smartct23:05:200
2847191430,4ptp4l24050-21ntp_states21:35:250
2847191430,4ptp4l20843-21iostat_ios20:20:190
2847191430,4ptp4l1526-21users21:55:310
2847191430,3ptp4l0-21swapper/123:54:231
19860994316,24cyclictest6421-21diskstats00:25:172
2847191420,5ptp4l21967-21fschecks_time23:50:200
2847191420,5ptp4l17510-21switchtime22:30:270
2847191420,5ptp4l0-21swapper/321:50:153
2847191420,4ptp4l30530-21hddtemp_smartct23:00:180
2847191420,4ptp4l24751-21df19:20:172
2847191420,4ptp4l24751-21df19:20:172
2847191420,4ptp4l19224-21apt-get23:45:132
2847191420,4ptp4l0-21swapper/322:20:133
2847191420,4ptp4l0-21swapper/322:20:133
2847191420,4ptp4l0-21swapper/320:01:183
2847191420,4ptp4l0-21swapper/319:49:543
2847191420,4ptp4l0-21swapper/021:48:390
2847191420,4ptp4l0-21swapper/021:05:030
2847191420,4ptp4l0-21swapper/019:19:330
2847191420,3ptp4l31533-21apt-get19:35:133
2847191420,3ptp4l16576-21memory20:10:230
2847191420,3ptp4l16576-21memory20:10:230
2847191420,3ptp4l0-21swapper/321:25:203
19860994213,20cyclictest2847191ptp4l20:05:282
19860994213,10cyclictest6357-21runrttasks22:06:592
1985899421,2cyclictest121rcu_preempt23:00:000
2847191410,6ptp4l0-21swapper/320:15:163
2847191410,5ptp4l0-21swapper/221:15:282
2847191410,5ptp4l0-21swapper/019:30:240
2847191410,4ptp4l15083-21ls21:15:273
2847191410,4ptp4l0-21swapper/219:40:212
2847191410,4ptp4l0-21swapper/123:30:201
2847191410,4ptp4l0-21swapper/123:05:221
2847191410,4ptp4l0-21swapper/122:30:161
2847191410,4ptp4l0-21swapper/100:01:481
2847191410,4ptp4l0-21swapper/023:46:420
2847191410,4ptp4l0-21swapper/023:15:230
2847191410,4ptp4l0-21swapper/022:27:420
2847191410,4ptp4l0-21swapper/022:15:260
2847191410,4ptp4l0-21swapper/022:00:210
2847191410,4ptp4l0-21swapper/020:58:230
2847191410,4ptp4l0-21swapper/020:45:170
2847191410,4ptp4l0-21swapper/020:34:410
2847191410,4ptp4l0-21swapper/020:05:170
2847191410,4ptp4l0-21swapper/020:00:190
2847191410,4ptp4l0-21swapper/019:55:290
2847191410,4ptp4l0-21swapper/019:45:150
2847191410,4ptp4l0-21swapper/019:35:160
2847191410,4ptp4l0-21swapper/019:20:270
2847191410,4ptp4l0-21swapper/019:20:270
2847191410,4ptp4l0-21swapper/019:11:090
2847191410,4ptp4l0-21swapper/000:30:160
2847191410,3ptp4l6060-21ls23:15:223
2847191410,3ptp4l16838-21irqstats21:20:200
2847191410,3ptp4l16838-21irqstats21:20:200
2847191410,3ptp4l12909-21irqstats23:30:190
2847191410,3ptp4l11927-21iostat_ios21:10:221
1986099417,10cyclictest0-21swapper/221:25:322
19859994136,3cyclictest25-21ksoftirqd/120:05:001
2847191400,5ptp4l0-21swapper/300:36:573
2847191400,5ptp4l0-21swapper/122:43:111
2847191400,4ptp4l29416-21awk22:55:303
2847191400,4ptp4l28554-21mailstats20:35:300
2847191400,4ptp4l25116-21iostat19:20:211
2847191400,4ptp4l25116-21iostat19:20:211
2847191400,4ptp4l0-21swapper/323:20:183
2847191400,4ptp4l0-21swapper/322:27:413
2847191400,4ptp4l0-21swapper/321:05:153
2847191400,4ptp4l0-21swapper/321:02:543
2847191400,4ptp4l0-21swapper/320:20:223
2847191400,4ptp4l0-21swapper/300:25:553
2847191400,4ptp4l0-21swapper/300:10:183
2847191400,4ptp4l0-21swapper/221:06:082
2847191400,4ptp4l0-21swapper/123:43:191
2847191400,4ptp4l0-21swapper/123:20:201
2847191400,4ptp4l0-21swapper/123:10:021
2847191400,4ptp4l0-21swapper/100:09:161
2847191400,4ptp4l0-21swapper/023:10:230
2847191400,4ptp4l0-21swapper/022:40:500
2847191400,4ptp4l0-21swapper/021:50:280
2847191400,4ptp4l0-21swapper/021:10:210
2847191400,3ptp4l9748-21iostat22:15:231
2847191400,3ptp4l22576-21apt-get20:25:140
2847191400,3ptp4l21392-21ntp_states20:20:251
2847191400,3ptp4l14230-21iostat21:15:190
2847191400,3ptp4l0-21swapper/100:37:051
2847191400,3ptp4l0-21swapper/022:50:300
1986099406,32cyclictest0-21swapper/220:50:172
2847191390,5ptp4l32444-21latency19:35:211
2847191390,4ptp4l4848-21df_abs22:05:170
2847191390,4ptp4l0-21swapper/321:10:203
2847191390,4ptp4l0-21swapper/320:33:343
2847191390,4ptp4l0-21swapper/319:28:253
2847191390,4ptp4l0-21swapper/319:15:133
2847191390,4ptp4l0-21swapper/319:10:263
2847191390,4ptp4l0-21swapper/223:00:192
2847191390,4ptp4l0-21swapper/220:15:172
2847191390,4ptp4l0-21swapper/123:49:011
2847191390,4ptp4l0-21swapper/123:19:521
2847191390,4ptp4l0-21swapper/122:55:561
2847191390,4ptp4l0-21swapper/121:47:391
2847191390,4ptp4l0-21swapper/121:30:551
2847191390,4ptp4l0-21swapper/121:09:461
2847191390,4ptp4l0-21swapper/120:13:591
2847191390,4ptp4l0-21swapper/120:13:581
2847191390,4ptp4l0-21swapper/119:15:061
2847191390,3ptp4l8448-21/usr/sbin/munin19:55:151
2847191390,3ptp4l0-21swapper/122:25:281
2847191390,3ptp4l0-21swapper/120:55:481
2847191390,3ptp4l0-21swapper/120:31:161
2847191380,4ptp4l31400-21chrt00:10:012
2847191380,4ptp4l0-21swapper/123:58:091
2847191380,4ptp4l0-21swapper/122:05:141
2847191380,4ptp4l0-21swapper/121:37:351
2847191380,4ptp4l0-21swapper/120:48:551
2847191380,4ptp4l0-21swapper/120:26:151
2847191380,4ptp4l0-21swapper/119:50:301
2847191380,3ptp4l0-21swapper/122:48:021
2847191380,3ptp4l0-21swapper/122:37:571
2847191380,3ptp4l0-21swapper/121:44:221
2847191380,3ptp4l0-21swapper/121:27:261
2847191380,3ptp4l0-21swapper/121:19:571
2847191380,3ptp4l0-21swapper/120:51:541
2847191380,3ptp4l0-21swapper/120:41:431
2847191380,3ptp4l0-21swapper/120:37:581
2847191380,3ptp4l0-21swapper/119:49:171
2847191380,3ptp4l0-21swapper/119:28:541
2847191380,3ptp4l0-21swapper/100:31:581
2847191380,3ptp4l0-21swapper/100:28:131
2847191380,3ptp4l0-21swapper/100:20:291
2847191380,3ptp4l0-21swapper/100:16:461
2847191370,4ptp4l0-21swapper/123:01:461
2847191370,3ptp4l0-21swapper/120:05:271
2847191370,3ptp4l0-21swapper/119:42:281
19859993730,3cyclictest25-21ksoftirqd/120:20:011
2847191360,4ptp4l0-21swapper/119:10:011
2847191360,3ptp4l0-21swapper/121:02:561
2847191350,3ptp4l0-21swapper/122:54:341
2847191330,3ptp4l0-21swapper/123:27:091
2847191330,3ptp4l0-21swapper/123:27:091
19859993328,3cyclictest25-21ksoftirqd/122:00:011
2847191320,3ptp4l0-21swapper/122:04:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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