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2025-09-19 - 05:01
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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 Fri Sep 19, 2025 00:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1499722000,5sleep233-21ksoftirqd/219:05:172
735221330,6sleep01681499cyclictest00:35:240
152421210,6sleep21681699cyclictest19:45:162
152421210,6sleep21681699cyclictest19:45:162
1681599640,22cyclictest21699-21basename19:20:151
2847191630,2ptp4l9-21ksoftirqd/021:25:230
255012610,6sleep30-21swapper/300:05:273
2847191600,5ptp4l0-21swapper/022:44:560
2847191600,4ptp4l0-21swapper/119:51:471
1681599600,22cyclictest22003-21netstat21:40:221
2847191590,3ptp4l15865-21memory23:45:231
2847191590,3ptp4l0-21swapper/320:14:553
1681599590,56cyclictest29711-21irqstats19:35:221
2847191580,4ptp4l0-21swapper/123:00:241
2847191580,4ptp4l0-21swapper/121:50:151
2847191580,4ptp4l0-21swapper/119:25:261
2847191580,3ptp4l0-21swapper/219:30:242
2847191580,3ptp4l0-21swapper/120:20:241
2847191570,4ptp4l0-21swapper/020:27:290
2847191570,4ptp4l0-21swapper/000:24:060
2847191570,3ptp4l0-21swapper/120:03:141
1681599570,20cyclictest1299-21runrttasks22:05:161
2847191560,5ptp4l0-21swapper/020:45:130
2847191560,5ptp4l0-21swapper/020:45:130
2847191560,4ptp4l0-21swapper/021:15:180
2847191560,4ptp4l0-21swapper/021:15:180
2847191560,4ptp4l0-21swapper/020:13:380
2847191560,3ptp4l0-21swapper/023:50:190
2847191560,3ptp4l0-21swapper/023:50:190
16816995625,4cyclictest33-21ksoftirqd/221:36:302
16816995620,4cyclictest33-21ksoftirqd/222:36:082
1681599560,26cyclictest30132-21chrt21:59:511
2847191550,4ptp4l0-21swapper/023:16:510
2847191550,4ptp4l0-21swapper/019:21:400
2847191550,3ptp4l32557-21ls20:50:240
2847191550,3ptp4l0-21swapper/023:56:500
2847191550,3ptp4l0-21swapper/019:59:470
2847191540,4ptp4l0-21swapper/300:10:503
2847191540,4ptp4l0-21swapper/219:42:242
2847191540,4ptp4l0-21swapper/022:39:550
2847191540,4ptp4l0-21swapper/021:02:220
16816995424,5cyclictest33-21ksoftirqd/223:11:062
16816995422,3cyclictest33-21ksoftirqd/219:20:262
2847191530,4ptp4l0-21swapper/223:36:172
2847191530,4ptp4l0-21swapper/220:42:092
2847191530,4ptp4l0-21swapper/021:12:490
2847191530,4ptp4l0-21swapper/020:39:370
2847191530,3ptp4l0-21swapper/219:50:182
2847191530,3ptp4l0-21swapper/023:08:350
2847191530,3ptp4l0-21swapper/022:55:010
2847191530,3ptp4l0-21swapper/022:00:460
2847191530,3ptp4l0-21swapper/021:56:540
2847191530,3ptp4l0-21swapper/019:12:190
16816995324,4cyclictest33-21ksoftirqd/222:41:132
1681599531,23cyclictest4661-21chrt23:21:161
1681599530,23cyclictest2847191ptp4l22:35:211
138012530,4sleep20-21swapper/220:10:192
2847191520,4ptp4l0-21swapper/200:08:262
2847191520,4ptp4l0-21swapper/023:01:050
2847191520,4ptp4l0-21swapper/022:47:280
2847191520,3ptp4l0-21swapper/022:34:450
2847191520,13ptp4l0-21swapper/021:20:270
16816995224,3cyclictest33-21ksoftirqd/200:33:292
16816995222,3cyclictest33-21ksoftirqd/222:50:002
2847191510,4ptp4l0-21swapper/200:12:162
2847191510,3ptp4l0-21swapper/020:19:350
2847191510,3ptp4l0-21swapper/020:19:350
2847191510,13ptp4l0-21swapper/022:19:510
2847191510,13ptp4l0-21swapper/022:19:510
2847191510,11ptp4l0-21swapper/022:09:350
231122510,4sleep30-21swapper/319:20:313
16816995124,7cyclictest33-21ksoftirqd/219:20:002
16816995122,6cyclictest33-21ksoftirqd/219:27:482
16816995119,6cyclictest33-21ksoftirqd/223:30:252
16816995119,5cyclictest33-21ksoftirqd/221:22:182
1681599511,25cyclictest9479-21seq23:31:061
1681599510,24cyclictest2439-21chrt23:18:151
2847191500,4ptp4l0-21swapper/222:25:342
2847191500,4ptp4l0-21swapper/222:12:502
2847191500,4ptp4l0-21swapper/221:51:112
2847191500,4ptp4l0-21swapper/219:59:582
16816995023,3cyclictest33-21ksoftirqd/220:39:592
16816995020,4cyclictest33-21ksoftirqd/223:47:552
1681599501,25cyclictest23692-21runrttasks00:02:181
2847191490,3ptp4l0-21swapper/200:37:522
2847191490,3ptp4l0-21swapper/020:24:190
2847191490,3ptp4l0-21swapper/019:25:580
2847191490,2ptp4l0-21swapper/322:53:283
2847191490,2ptp4l0-21swapper/322:53:283
2847191490,2ptp4l0-21swapper/020:06:510
2847191490,11ptp4l0-21swapper/023:12:160
16816994922,4cyclictest33-21ksoftirqd/221:16:082
16816994922,4cyclictest33-21ksoftirqd/221:16:082
16816994918,8cyclictest33-21ksoftirqd/223:04:402
16816994912,5cyclictest33-21ksoftirqd/221:55:192
1681599490,26cyclictest14065-21chrt22:34:571
1681599490,24cyclictest873-21seq20:51:271
1681599490,23cyclictest3939-21seq21:01:131
2847191480,4ptp4l0-21swapper/222:53:462
2847191480,4ptp4l0-21swapper/222:53:462
2847191480,4ptp4l0-21swapper/000:13:330
16816994823,8cyclictest33-21ksoftirqd/222:30:182
16816994819,6cyclictest33-21ksoftirqd/200:23:482
16816994817,8cyclictest33-21ksoftirqd/200:17:002
1681599482,43cyclictest0-21swapper/123:10:281
1681599482,20cyclictest0-21swapper/122:55:021
1681599480,22cyclictest18449-21taskset22:41:431
2847191470,4ptp4l0-21swapper/119:47:501
2847191470,4ptp4l0-21swapper/119:47:501
2847191470,4ptp4l0-21swapper/020:44:310
2847191470,3ptp4l0-21swapper/023:28:540
16816994719,6cyclictest33-21ksoftirqd/200:00:252
16816994719,3cyclictest33-21ksoftirqd/223:23:122
16816994718,8cyclictest33-21ksoftirqd/221:34:412
16816994718,6cyclictest33-21ksoftirqd/222:20:232
16816994718,5cyclictest33-21ksoftirqd/223:29:542
16816994717,6cyclictest33-21ksoftirqd/223:15:162
16816994716,4cyclictest33-21ksoftirqd/220:28:392
1681599472,25cyclictest0-21swapper/122:14:371
16816994617,4cyclictest33-21ksoftirqd/223:50:042
16816994617,4cyclictest33-21ksoftirqd/223:50:042
16816994617,4cyclictest33-21ksoftirqd/222:09:112
1681599462,21cyclictest0-21swapper/100:17:521
1681599460,43cyclictest5110-21grep22:15:131
1681599460,43cyclictest5110-21grep22:15:131
1681599460,22cyclictest26381-21taskset20:37:011
2847191450,9ptp4l0-21swapper/221:05:372
2847191450,6ptp4l0-21swapper/300:35:133
2847191450,4ptp4l15296-21apt-get20:15:112
2847191450,4ptp4l15296-21apt-get20:15:112
2847191450,3ptp4l0-21swapper/021:49:290
2847191450,3ptp4l0-21swapper/021:49:290
2847191450,12ptp4l1299-21runrttasks21:36:231
16816994520,6cyclictest33-21ksoftirqd/222:59:392
16816994516,6cyclictest33-21ksoftirqd/220:50:172
16816994515,5cyclictest33-21ksoftirqd/221:00:172
16816994514,4cyclictest33-21ksoftirqd/200:28:252
16816994512,5cyclictest33-21ksoftirqd/219:35:302
1681599450,27cyclictest15271-21taskset20:15:031
1681599450,27cyclictest15271-21taskset20:15:031
1681599450,24cyclictest28680-21seq00:11:421
1681599450,19cyclictest2847191ptp4l23:37:461
2847191440,9ptp4l0-21swapper/220:45:482
2847191440,9ptp4l0-21swapper/220:45:482
2847191440,5ptp4l0-21swapper/319:05:493
2847191440,4ptp4l20479-21ls22:45:273
2847191440,3ptp4l0-21swapper/019:30:340
1681699444,3cyclictest121rcu_preempt22:00:252
16816994415,5cyclictest33-21ksoftirqd/221:45:222
16816994415,5cyclictest33-21ksoftirqd/221:45:222
1681599440,41cyclictest8555-21phc2sys22:20:241
2847191430,4ptp4l9340-21apt-get21:15:151
2847191430,4ptp4l9340-21apt-get21:15:151
2847191430,4ptp4l23383-21ntp_states20:30:253
2847191430,4ptp4l0-21swapper/121:20:561
2847191430,4ptp4l0-21swapper/119:09:161
2847191430,4ptp4l0-21swapper/020:34:270
2847191430,4ptp4l0-21swapper/020:04:020
2847191430,4ptp4l0-21swapper/019:45:060
2847191430,4ptp4l0-21swapper/019:45:060
2847191430,2ptp4l0-21swapper/019:35:150
16816994325,7cyclictest33-21ksoftirqd/223:55:132
16816994317,4cyclictest33-21ksoftirqd/223:40:232
16816994316,3cyclictest33-21ksoftirqd/220:20:202
16816994310,3cyclictest33-21ksoftirqd/222:19:392
16816994310,3cyclictest33-21ksoftirqd/222:19:392
1681599432,23cyclictest0-21swapper/121:12:331
1681599430,24cyclictest7359-21seq23:28:251
2847191420,7ptp4l0-21swapper/322:16:023
2847191420,7ptp4l0-21swapper/322:16:023
2847191420,6ptp4l1511-21cstates19:45:163
2847191420,6ptp4l1511-21cstates19:45:163
2847191420,5ptp4l23225-21/usr/sbin/munin00:00:270
2847191420,5ptp4l1681799cyclictest23:21:013
2847191420,4ptp4l6999-21meminfo19:55:221
2847191420,4ptp4l5080-21iostat21:05:201
2847191420,4ptp4l19371-21apt-get19:15:141
2847191420,4ptp4l17160-21df_inode19:10:151
2847191420,4ptp4l14561-21iostat_ios21:25:211
2847191420,4ptp4l12804-21df23:40:141
2847191420,4ptp4l0-21swapper/300:00:293
2847191420,4ptp4l0-21swapper/019:50:230
2847191420,3ptp4l3819-21apt-get00:30:133
2847191420,3ptp4l24170-21apt-get00:05:151
2847191420,3ptp4l1681799cyclictest23:35:103
2847191420,3ptp4l0-21swapper/023:31:220
16816994216,3cyclictest33-21ksoftirqd/221:25:282
16816994215,4cyclictest33-21ksoftirqd/220:30:272
1681599420,24cyclictest24177-21taskset20:33:161
1681599420,16cyclictest2847191ptp4l20:05:161
2847191410,5ptp4l3046-21sed22:10:170
2847191410,5ptp4l24718-21sed21:45:281
2847191410,5ptp4l24718-21sed21:45:281
2847191410,5ptp4l0-21swapper/120:25:261
2847191410,5ptp4l0-21swapper/022:50:170
2847191410,5ptp4l0-21swapper/022:50:170
2847191410,5ptp4l0-21swapper/021:50:230
2847191410,5ptp4l0-21swapper/021:38:250
2847191410,4ptp4l2496-1kworker/0:1H23:45:230
2847191410,4ptp4l2368-21irqstats00:25:231
2847191410,4ptp4l0-21swapper/323:00:203
2847191410,4ptp4l0-21swapper/300:25:263
2847191410,4ptp4l0-21swapper/220:56:222
2847191410,4ptp4l0-21swapper/120:40:241
2847191410,4ptp4l0-21swapper/120:10:161
2847191410,4ptp4l0-21swapper/119:40:171
2847191410,4ptp4l0-21swapper/023:35:220
2847191410,4ptp4l0-21swapper/022:25:150
2847191410,4ptp4l0-21swapper/021:33:090
2847191410,4ptp4l0-21swapper/020:59:260
2847191410,4ptp4l0-21swapper/019:15:020
2847191410,4ptp4l0-21swapper/000:15:230
2847191410,3ptp4l4671-21irqstats00:30:211
2847191410,3ptp4l32313-21ntp_states19:40:250
2847191410,3ptp4l29215-21apt-get20:45:121
2847191410,3ptp4l29215-21apt-get20:45:121
2847191410,3ptp4l25-21ksoftirqd/123:50:191
2847191410,3ptp4l25-21ksoftirqd/123:50:191
2847191410,3ptp4l22056-21ntp_states21:40:240
2847191410,3ptp4l17805-21ls21:30:291
2847191410,3ptp4l11710-21ls20:05:243
16816994131,3cyclictest33-21ksoftirqd/223:10:002
1681699412,3cyclictest26403-21kworker/2:221:14:372
2847191400,9ptp4l9-21ksoftirqd/022:23:060
2847191400,5ptp4l1681799cyclictest20:40:163
2847191400,5ptp4l0-21swapper/323:46:283
2847191400,5ptp4l0-21swapper/323:40:143
2847191400,4ptp4l3713-21/usr/sbin/munin19:50:183
2847191400,4ptp4l27277-21date21:50:283
2847191400,4ptp4l0-21swapper/322:55:143
2847191400,4ptp4l0-21swapper/322:00:193
2847191400,4ptp4l0-21swapper/321:45:303
2847191400,4ptp4l0-21swapper/321:45:303
2847191400,4ptp4l0-21swapper/321:10:293
2847191400,4ptp4l0-21swapper/320:54:063
2847191400,4ptp4l0-21swapper/320:17:303
2847191400,4ptp4l0-21swapper/320:17:303
2847191400,4ptp4l0-21swapper/319:42:543
2847191400,4ptp4l0-21swapper/319:25:283
2847191400,4ptp4l0-21swapper/319:19:143
2847191400,4ptp4l0-21swapper/220:07:242
2847191400,4ptp4l0-21swapper/219:10:202
2847191400,4ptp4l0-21swapper/123:08:251
2847191400,4ptp4l0-21swapper/122:45:261
2847191400,4ptp4l0-21swapper/120:57:441
2847191400,4ptp4l0-21swapper/100:37:251
2847191400,4ptp4l0-21swapper/100:20:201
2847191400,4ptp4l0-21swapper/023:40:180
2847191400,4ptp4l0-21swapper/019:08:440
2847191400,4ptp4l0-21swapper/000:33:160
2847191400,4ptp4l0-21swapper/000:28:060
2847191400,4ptp4l0-21swapper/000:05:140
2847191400,3ptp4l27282-21meminfo19:30:211
2847191400,3ptp4l19960-21perl23:55:181
2847191400,3ptp4l18684-21sshd19:12:173
2847191400,3ptp4l16656-21apt-get22:40:123
2847191400,2ptp4l0-21swapper/023:20:140
1681699409,6cyclictest33-21ksoftirqd/221:40:162
1681699408,4cyclictest33-21ksoftirqd/220:00:282
2847191390,5ptp4l0-21swapper/300:16:063
2847191390,4ptp4l0-21swapper/323:51:303
2847191390,4ptp4l0-21swapper/323:51:303
2847191390,4ptp4l0-21swapper/323:26:573
2847191390,4ptp4l0-21swapper/323:05:353
2847191390,4ptp4l0-21swapper/322:31:483
2847191390,4ptp4l0-21swapper/322:25:343
2847191390,4ptp4l0-21swapper/322:10:403
2847191390,4ptp4l0-21swapper/321:38:303
2847191390,4ptp4l0-21swapper/321:25:463
2847191390,4ptp4l0-21swapper/321:20:203
2847191390,4ptp4l0-21swapper/321:17:493
2847191390,4ptp4l0-21swapper/321:17:493
2847191390,4ptp4l0-21swapper/321:05:073
2847191390,4ptp4l0-21swapper/321:01:003
2847191390,4ptp4l0-21swapper/320:45:583
2847191390,4ptp4l0-21swapper/320:45:583
2847191390,4ptp4l0-21swapper/320:25:223
2847191390,4ptp4l0-21swapper/319:59:203
2847191390,4ptp4l0-21swapper/319:39:303
2847191390,4ptp4l0-21swapper/122:50:021
2847191390,4ptp4l0-21swapper/122:50:021
2847191390,4ptp4l0-21swapper/122:25:121
2847191390,4ptp4l0-21swapper/122:00:071
2847191390,3ptp4l4715-21df21:05:160
2847191390,3ptp4l0-21swapper/323:19:053
2847191390,3ptp4l0-21swapper/322:20:413
2847191390,3ptp4l0-21swapper/300:20:253
2847191380,4ptp4l0-21swapper/323:56:413
2847191380,4ptp4l0-21swapper/322:37:253
2847191380,4ptp4l0-21swapper/322:05:463
2847191380,4ptp4l0-21swapper/321:57:323
2847191380,4ptp4l0-21swapper/320:22:383
2847191380,4ptp4l0-21swapper/320:00:163
2847191380,3ptp4l0-21swapper/323:32:133
2847191380,3ptp4l0-21swapper/320:37:243
2847191380,2ptp4l0-21swapper/320:57:203
2847191370,4ptp4l0-21swapper/319:30:063
2847191370,3ptp4l0-21swapper/323:14:413
2847191370,3ptp4l0-21swapper/321:42:283
2847191240,4ptp4l0-21swapper/321:34:103
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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