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2025-11-19 - 14:26
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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 Wed Nov 19, 2025 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2466121800,6sleep1187299cyclictest23:20:301
1513921670,6sleep3187499cyclictest00:10:223
1897521520,3sleep3187499cyclictest23:10:293
2847191780,13ptp4l570-21ntp_states19:05:253
2847191750,16ptp4l33-21ksoftirqd/220:45:302
2847191750,16ptp4l33-21ksoftirqd/220:45:302
36282610,4sleep20-21swapper/220:20:192
2847191590,4ptp4l0-21swapper/200:17:352
2847191590,4ptp4l0-21swapper/200:17:342
1871995930,7cyclictest9-21ksoftirqd/020:20:010
1871995927,5cyclictest9-21ksoftirqd/022:55:010
2847191580,4ptp4l0-21swapper/122:21:291
1871995826,5cyclictest9-21ksoftirqd/023:50:150
1871995826,5cyclictest9-21ksoftirqd/020:55:010
2847191570,4ptp4l0-21swapper/223:05:132
2847191570,3ptp4l0-21swapper/123:13:121
2847191570,3ptp4l0-21swapper/119:45:191
2847191570,3ptp4l0-21swapper/022:00:290
187299572,16cyclictest0-21swapper/122:10:221
1871995728,3cyclictest9-21ksoftirqd/023:30:160
1871995726,6cyclictest9-21ksoftirqd/019:55:010
1871995726,5cyclictest9-21ksoftirqd/022:55:280
1871995724,6cyclictest9-21ksoftirqd/019:25:210
1871995724,5cyclictest9-21ksoftirqd/020:05:000
2847191560,4ptp4l0-21swapper/019:38:280
2847191560,3ptp4l0-21swapper/019:45:200
1871995625,4cyclictest9-21ksoftirqd/021:55:260
1871995617,5cyclictest9-21ksoftirqd/020:05:200
2847191550,5ptp4l0-21swapper/219:06:452
2847191550,4ptp4l0-21swapper/322:53:323
2847191550,4ptp4l0-21swapper/022:28:510
2847191550,4ptp4l0-21swapper/000:37:580
187299553,10cyclictest0-21swapper/119:35:211
1871995529,4cyclictest9-21ksoftirqd/020:40:330
1871995529,3cyclictest9-21ksoftirqd/000:21:270
1871995526,4cyclictest9-21ksoftirqd/021:05:000
1871995525,5cyclictest9-21ksoftirqd/022:10:210
1871995524,6cyclictest9-21ksoftirqd/023:25:200
1871995523,6cyclictest9-21ksoftirqd/000:27:040
1871995521,7cyclictest9-21ksoftirqd/021:25:280
2847191540,4ptp4l0-21swapper/320:38:593
187299540,12cyclictest27305-21ls20:00:321
187299540,12cyclictest10897-21chrt19:26:501
1871995427,5cyclictest9-21ksoftirqd/021:32:220
1871995426,4cyclictest9-21ksoftirqd/023:55:210
1871995423,6cyclictest9-21ksoftirqd/021:05:010
187299530,6cyclictest2847191ptp4l00:40:001
187299530,15cyclictest7050-21chrt23:54:121
187299530,12cyclictest9385-21chrt23:59:341
187299530,12cyclictest29104-21expr23:30:291
187299530,12cyclictest22919-21chrt19:54:541
187299530,12cyclictest17640-21chrt21:58:291
187199539,3cyclictest9-21ksoftirqd/000:05:010
1871995327,5cyclictest9-21ksoftirqd/000:10:300
1871995325,5cyclictest9-21ksoftirqd/021:15:180
1871995324,5cyclictest9-21ksoftirqd/020:35:280
2847191520,4ptp4l0-21swapper/021:10:590
2847191520,3ptp4l0-21swapper/022:07:160
2847191520,12ptp4l311rcuc/200:20:202
187299520,12cyclictest9784-21chrt20:34:301
187299520,12cyclictest26670-21cat21:09:551
1871995223,5cyclictest9-21ksoftirqd/023:15:190
1871995223,4cyclictest9-21ksoftirqd/023:00:060
1871995223,3cyclictest9-21ksoftirqd/019:10:240
1871995222,3cyclictest9-21ksoftirqd/023:14:590
1871995221,5cyclictest9-21ksoftirqd/000:09:360
2847191510,4ptp4l0-21swapper/223:36:202
2847191510,4ptp4l0-21swapper/023:44:110
2847191510,3ptp4l0-21swapper/022:39:090
2847191510,3ptp4l0-21swapper/022:32:190
187299512,10cyclictest0-21swapper/121:10:261
187299511,11cyclictest9678-21chrt00:00:091
187299510,12cyclictest4447-21chrt23:45:341
187299510,12cyclictest26982-21chrt22:19:281
187299510,12cyclictest25488-21chrt00:30:391
187299510,12cyclictest23661-21df_abs19:55:151
187299510,12cyclictest22620-21chrt23:18:221
187299510,12cyclictest20896-21chrt00:21:041
187299510,12cyclictest20061-21taskset22:04:391
187299510,12cyclictest13441-21chrt22:59:271
187299510,11cyclictest27326-21taskset23:29:091
187299510,10cyclictest5387-21ntpq22:40:251
187199518,4cyclictest9-21ksoftirqd/022:15:250
1871995125,3cyclictest9-21ksoftirqd/020:20:190
1871995122,6cyclictest9-21ksoftirqd/021:40:200
2847191500,9ptp4l4291-21apt-get22:40:152
2847191500,4ptp4l0-21swapper/000:33:430
187299503,12cyclictest0-21swapper/122:50:231
187299502,10cyclictest0-21swapper/119:10:271
187299500,12cyclictest3932-21chrt22:38:571
187299500,12cyclictest11985-21chrt00:05:061
187299500,11cyclictest8794-21chrt19:24:331
187299500,11cyclictest30009-21chrt20:06:141
187299500,11cyclictest15473-21chrt23:00:441
187299500,11cyclictest1494-21chrt22:33:121
1871995019,4cyclictest9-21ksoftirqd/019:40:000
1871995019,10cyclictest9-21ksoftirqd/023:20:200
1871995018,10cyclictest9-21ksoftirqd/022:45:230
2847191490,4ptp4l0-21swapper/322:57:283
187299492,10cyclictest0-21swapper/100:15:261
187299492,10cyclictest0-21swapper/100:15:261
187299490,12cyclictest4949-21chrt20:21:501
187299490,12cyclictest23983-21chrt21:02:461
187299490,12cyclictest23372-21chrt00:28:021
187299490,12cyclictest22395-21taskset22:09:571
187299490,12cyclictest13663-21cat19:35:001
187299490,11cyclictest19485-21chrt20:54:401
187199499,3cyclictest9-21ksoftirqd/023:10:010
1871994931,2cyclictest9-21ksoftirqd/023:37:260
1871994919,4cyclictest9-21ksoftirqd/019:55:220
2847191480,5ptp4l0-21swapper/323:09:073
2847191480,3ptp4l0-21swapper/121:39:561
187299480,13cyclictest29835-21df_abs22:25:141
187299480,11cyclictest5502-21switchtime21:30:281
187299480,11cyclictest32517-21chrt20:12:551
187299480,11cyclictest31283-21chrt21:16:261
187299480,11cyclictest21614-21taskset20:57:201
187299480,11cyclictest15313-21chrt21:53:161
1871994831,2cyclictest9-21ksoftirqd/022:44:200
1871994820,7cyclictest9-21ksoftirqd/020:30:200
1871994818,10cyclictest9-21ksoftirqd/019:20:300
1871994812,4cyclictest9-21ksoftirqd/019:15:010
187199480,6cyclictest18897-21latency_hist00:20:010
187199480,6cyclictest18897-21latency_hist00:20:010
2847191470,4ptp4l0-21swapper/020:27:000
2847191470,12ptp4l0-21swapper/222:50:272
187299470,16cyclictest31580-21mailstats23:35:301
187299470,12cyclictest18034-21seq19:41:371
1871994721,3cyclictest9-21ksoftirqd/021:21:190
2847191460,3ptp4l0-21swapper/123:40:301
187299460,17cyclictest11307-21df_abs21:45:161
187299460,12cyclictest17078-21chrt20:48:261
187299460,12cyclictest17078-21chrt20:48:261
187299460,12cyclictest1347-21chrt21:23:081
1871994629,3cyclictest9-21ksoftirqd/021:53:090
1871994627,7cyclictest9-21ksoftirqd/020:45:180
1871994627,7cyclictest9-21ksoftirqd/020:45:180
187199461,6cyclictest9-21ksoftirqd/022:20:210
2847191450,10ptp4l0-21swapper/223:58:322
187299453,10cyclictest0-21swapper/121:25:191
187299453,10cyclictest0-21swapper/119:15:291
187199454,3cyclictest9-21ksoftirqd/019:30:280
187199453,3cyclictest9-21ksoftirqd/021:45:300
187199452,1cyclictest0-21swapper/021:35:150
2847191440,9ptp4l0-21swapper/219:51:492
2847191440,9ptp4l0-21swapper/219:25:402
2847191440,13ptp4l33-21ksoftirqd/220:56:072
2847191440,10ptp4l0-21swapper/200:05:102
187299442,9cyclictest0-21swapper/123:05:271
2847191430,9ptp4l0-21swapper/223:48:342
2847191430,9ptp4l0-21swapper/221:37:532
2847191430,9ptp4l0-21swapper/221:33:372
2847191430,9ptp4l0-21swapper/220:07:022
2847191430,9ptp4l0-21swapper/200:01:272
2847191430,5ptp4l0-21swapper/200:30:192
2847191430,5ptp4l0-21swapper/019:07:570
2847191430,4ptp4l0-21swapper/322:04:523
2847191430,3ptp4l20695-21apt-get23:15:152
2847191430,10ptp4l0-21swapper/221:24:392
2847191430,10ptp4l0-21swapper/219:57:182
187299433,10cyclictest0-21swapper/121:40:151
187299430,13cyclictest2847191ptp4l00:14:531
187199430,3cyclictest121rcu_preempt23:45:250
2847191420,9ptp4l0-21swapper/223:20:272
2847191420,9ptp4l0-21swapper/220:54:172
2847191420,9ptp4l0-21swapper/219:41:352
2847191420,9ptp4l0-21swapper/219:19:332
2847191420,8ptp4l0-21swapper/221:09:252
2847191420,5ptp4l25280-21df_inode22:15:172
2847191420,4ptp4l9904-21ntp_states21:40:252
2847191420,4ptp4l13281-21hddtemp_smartct20:40:221
2847191420,4ptp4l10293-21apt-get20:35:151
2847191420,10ptp4l0-21swapper/200:10:032
187199424,3cyclictest9-21ksoftirqd/020:10:290
187199422,3cyclictest121rcu_preempt21:00:010
2847191410,9ptp4l0-21swapper/221:00:082
2847191410,5ptp4l0-21swapper/222:22:172
2847191410,5ptp4l0-21swapper/222:05:262
2847191410,5ptp4l0-21swapper/119:07:151
2847191410,4ptp4l7183-21iostat_ios22:45:211
2847191410,4ptp4l0-21swapper/321:55:223
2847191410,4ptp4l0-21swapper/222:35:242
2847191410,4ptp4l0-21swapper/221:25:152
2847191400,5ptp4l0-21swapper/322:30:233
2847191400,5ptp4l0-21swapper/322:15:163
2847191400,5ptp4l0-21swapper/320:50:183
2847191400,5ptp4l0-21swapper/319:45:303
2847191400,4ptp4l9991-21ps21:40:253
2847191400,4ptp4l41-21ksoftirqd/323:19:293
2847191400,4ptp4l0-21swapper/323:50:233
2847191400,4ptp4l0-21swapper/323:36:133
2847191400,4ptp4l0-21swapper/323:32:293
2847191400,4ptp4l0-21swapper/323:28:553
2847191400,4ptp4l0-21swapper/321:05:253
2847191400,4ptp4l0-21swapper/320:20:013
2847191400,4ptp4l0-21swapper/300:35:223
2847191400,4ptp4l0-21swapper/222:55:032
2847191400,4ptp4l0-21swapper/222:45:412
2847191400,4ptp4l0-21swapper/220:40:252
2847191400,4ptp4l0-21swapper/219:24:392
187299400,11cyclictest7167-21taskset20:25:391
2847191390,5ptp4l17076-21seq20:48:253
2847191390,5ptp4l17076-21seq20:48:253
2847191390,5ptp4l0-21swapper/300:00:443
2847191390,4ptp4l41-21ksoftirqd/321:30:183
2847191390,4ptp4l0-21swapper/322:25:283
2847191390,4ptp4l0-21swapper/322:13:483
2847191390,4ptp4l0-21swapper/321:50:233
2847191390,4ptp4l0-21swapper/321:46:323
2847191390,4ptp4l0-21swapper/321:12:273
2847191390,4ptp4l0-21swapper/320:59:493
2847191390,4ptp4l0-21swapper/320:25:293
2847191390,4ptp4l0-21swapper/319:55:143
2847191390,4ptp4l0-21swapper/319:30:253
2847191390,4ptp4l0-21swapper/319:25:233
2847191390,4ptp4l0-21swapper/223:51:192
2847191390,4ptp4l0-21swapper/223:40:262
2847191390,4ptp4l0-21swapper/223:25:312
2847191390,4ptp4l0-21swapper/223:12:522
2847191390,4ptp4l0-21swapper/223:02:072
2847191390,4ptp4l0-21swapper/222:30:552
2847191390,4ptp4l0-21swapper/222:25:422
2847191390,4ptp4l0-21swapper/222:14:322
2847191390,4ptp4l0-21swapper/221:55:472
2847191390,4ptp4l0-21swapper/221:50:052
2847191390,4ptp4l0-21swapper/221:48:012
2847191390,4ptp4l0-21swapper/221:17:552
2847191390,4ptp4l0-21swapper/221:10:352
2847191390,4ptp4l0-21swapper/220:33:332
2847191390,4ptp4l0-21swapper/220:20:012
2847191390,4ptp4l0-21swapper/220:02:382
2847191390,4ptp4l0-21swapper/219:36:252
2847191390,4ptp4l0-21swapper/219:31:552
2847191390,4ptp4l0-21swapper/219:10:582
2847191390,4ptp4l0-21swapper/200:28:102
2847191390,4ptp4l0-21swapper/120:15:271
2847191390,3ptp4l788-21perl23:40:193
2847191390,3ptp4l0-21swapper/300:17:533
2847191390,3ptp4l0-21swapper/300:17:523
2847191380,4ptp4l0-21swapper/323:55:123
2847191380,4ptp4l0-21swapper/323:22:183
2847191380,4ptp4l0-21swapper/322:45:413
2847191380,4ptp4l0-21swapper/322:37:363
2847191380,4ptp4l0-21swapper/322:21:423
2847191380,4ptp4l0-21swapper/321:25:543
2847191380,4ptp4l0-21swapper/321:21:053
2847191380,4ptp4l0-21swapper/321:15:593
2847191380,4ptp4l0-21swapper/319:40:233
2847191380,4ptp4l0-21swapper/300:33:553
2847191380,4ptp4l0-21swapper/300:20:153
2847191380,4ptp4l0-21swapper/300:05:323
2847191380,4ptp4l0-21swapper/220:29:572
2847191380,4ptp4l0-21swapper/220:10:022
2847191380,4ptp4l0-21swapper/219:45:152
2847191380,3ptp4l0-21swapper/319:15:223
2847191380,3ptp4l0-21swapper/223:31:062
2847191380,3ptp4l0-21swapper/222:01:072
2847191380,3ptp4l0-21swapper/200:35:042
2847191370,5ptp4l0-21swapper/319:50:143
2847191370,4ptp4l0-21swapper/322:42:583
2847191370,4ptp4l0-21swapper/320:33:503
2847191370,4ptp4l0-21swapper/320:23:193
2847191370,4ptp4l0-21swapper/319:38:323
2847191370,4ptp4l0-21swapper/319:10:593
2847191370,4ptp4l0-21swapper/220:35:592
2847191370,3ptp4l0-21swapper/321:39:403
2847191370,3ptp4l0-21swapper/320:10:113
2847191370,3ptp4l0-21swapper/319:21:113
2847191370,3ptp4l0-21swapper/300:27:383
2847191360,4ptp4l0-21swapper/322:06:043
2847191360,4ptp4l0-21swapper/321:04:513
2847191360,3ptp4l0-21swapper/323:45:093
2847191360,3ptp4l0-21swapper/323:01:293
2847191340,3ptp4l0-21swapper/320:40:093
2847191330,4ptp4l0-21swapper/320:08:283
2847191330,4ptp4l0-21swapper/320:00:323
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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