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2026-09-02 - 10:11
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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 792 highest latencies:
System rackdslot1.osadl.org (updated Wed Sep 02, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2152221450,6sleep23043899cyclictest00:35:272
134491970,4ptp4l0-21swapper/319:31:463
30438995927,6cyclictest33-21ksoftirqd/222:30:172
30438995926,3cyclictest33-21ksoftirqd/219:11:382
30438995922,4cyclictest33-21ksoftirqd/221:42:582
134491590,4ptp4l0-21swapper/121:32:501
134491580,9ptp4l0-21swapper/019:05:100
134491580,4ptp4l0-21swapper/020:55:260
134491580,3ptp4l0-21swapper/123:25:141
134491570,4ptp4l0-21swapper/222:51:572
134491570,3ptp4l25-21ksoftirqd/123:35:161
134491570,14ptp4l0-21swapper/000:25:260
30438995625,3cyclictest33-21ksoftirqd/221:25:022
134491560,3ptp4l0-21swapper/323:10:513
134491560,3ptp4l0-21swapper/220:35:302
134491560,3ptp4l0-21swapper/122:00:261
134491560,3ptp4l0-21swapper/100:16:191
30438995527,4cyclictest33-21ksoftirqd/221:55:142
30438995525,4cyclictest33-21ksoftirqd/221:17:372
134491550,4ptp4l0-21swapper/323:45:153
134491550,3ptp4l0-21swapper/120:28:491
134491540,3ptp4l0-21swapper/322:30:213
134491540,3ptp4l0-21swapper/321:00:263
134491540,3ptp4l0-21swapper/120:46:201
134491540,3ptp4l0-21swapper/100:04:331
30438995327,4cyclictest33-21ksoftirqd/223:56:022
30438995326,7cyclictest33-21ksoftirqd/219:35:222
30438995325,7cyclictest33-21ksoftirqd/223:00:142
30438995325,7cyclictest33-21ksoftirqd/222:15:582
30438995321,3cyclictest33-21ksoftirqd/222:07:532
134491530,4ptp4l0-21swapper/023:03:140
134491530,4ptp4l0-21swapper/000:30:170
107922530,3sleep310794-21fschecks_count21:55:173
3043899522,7cyclictest0-21swapper/223:30:142
30438995226,4cyclictest33-21ksoftirqd/221:45:302
30438995224,6cyclictest33-21ksoftirqd/221:05:272
30438995221,8cyclictest33-21ksoftirqd/219:40:182
30438995218,3cyclictest33-21ksoftirqd/220:17:522
221942520,4sleep00-21swapper/023:30:140
134491520,4ptp4l0-21swapper/020:50:540
134491520,4ptp4l0-21swapper/019:35:400
134491520,4ptp4l0-21swapper/000:04:550
134491520,3ptp4l30454-21/usr/sbin/munin19:10:193
134491520,3ptp4l0-21swapper/320:23:313
134491520,3ptp4l0-21swapper/023:56:270
30438995122,4cyclictest33-21ksoftirqd/222:55:262
30438995119,5cyclictest33-21ksoftirqd/222:40:142
30438995117,6cyclictest33-21ksoftirqd/223:07:172
30438995117,3cyclictest33-21ksoftirqd/200:00:492
30438995115,8cyclictest33-21ksoftirqd/200:21:142
134491510,4ptp4l0-21swapper/319:57:033
134491510,4ptp4l0-21swapper/023:26:170
134491510,4ptp4l0-21swapper/022:30:240
134491510,4ptp4l0-21swapper/021:45:380
134491510,4ptp4l0-21swapper/021:18:320
134491510,4ptp4l0-21swapper/019:16:360
30438995019,6cyclictest33-21ksoftirqd/219:55:252
30438995019,5cyclictest33-21ksoftirqd/221:50:252
30438995019,5cyclictest33-21ksoftirqd/200:30:432
30438995017,3cyclictest33-21ksoftirqd/221:20:192
134491500,4ptp4l0-21swapper/023:35:150
134491500,3ptp4l14287-21ls00:20:200
134491500,3ptp4l0-21swapper/321:10:353
134491500,3ptp4l0-21swapper/220:12:222
134491500,12ptp4l0-21swapper/021:55:410
3043899492,4cyclictest0-21swapper/220:00:482
30438994919,6cyclictest33-21ksoftirqd/200:30:012
30438994913,5cyclictest33-21ksoftirqd/223:10:172
134491490,4ptp4l0-21swapper/320:04:593
134491490,4ptp4l0-21swapper/022:44:490
134491490,4ptp4l0-21swapper/022:05:350
134491490,3ptp4l0-21swapper/021:01:220
134491490,3ptp4l0-21swapper/019:50:220
30438994833,12cyclictest33-21ksoftirqd/223:40:282
30438994818,3cyclictest33-21ksoftirqd/220:05:132
30438994815,3cyclictest33-21ksoftirqd/220:45:292
30438994810,6cyclictest33-21ksoftirqd/223:40:012
3043799481,45cyclictest10169-21kworker/1:020:30:291
134491480,9ptp4l0-21swapper/321:40:183
134491480,6ptp4l9-21ksoftirqd/023:16:070
134491480,4ptp4l0-21swapper/323:36:333
134491480,4ptp4l0-21swapper/321:05:363
134491480,4ptp4l0-21swapper/300:35:553
134491480,4ptp4l0-21swapper/300:32:003
134491480,4ptp4l0-21swapper/200:19:522
134491480,4ptp4l0-21swapper/020:44:130
134491480,4ptp4l0-21swapper/019:44:380
134491480,11ptp4l0-21swapper/323:15:173
30438994718,4cyclictest33-21ksoftirqd/220:40:282
30438994710,7cyclictest33-21ksoftirqd/220:24:162
30438994710,6cyclictest33-21ksoftirqd/223:25:182
30438994710,4cyclictest33-21ksoftirqd/220:30:172
134491470,7ptp4l29439-21/usr/sbin/munin19:05:231
134491470,4ptp4l121rcu_preempt21:45:403
134491470,4ptp4l0-21swapper/323:25:333
134491470,4ptp4l0-21swapper/319:26:423
134491470,4ptp4l0-21swapper/019:23:510
134491470,4ptp4l0-21swapper/000:11:280
134491470,3ptp4l0-21swapper/320:54:483
134491470,3ptp4l0-21swapper/319:18:273
134491470,3ptp4l0-21swapper/219:49:362
134491470,3ptp4l0-21swapper/219:49:362
134491470,3ptp4l0-21swapper/120:06:181
134491470,2ptp4l0-21swapper/020:45:270
134491470,11ptp4l0-21swapper/100:13:441
3043899462,3cyclictest121rcu_preempt23:24:592
30438994615,4cyclictest33-21ksoftirqd/223:50:192
30438994611,7cyclictest33-21ksoftirqd/220:29:302
3043799461,3cyclictest12020-21kworker/1:119:27:491
134491460,4ptp4l0-21swapper/322:46:383
134491460,4ptp4l0-21swapper/223:46:462
134491460,3ptp4l0-21swapper/300:29:193
3043899452,2cyclictest121rcu_preempt19:50:282
3043899452,2cyclictest121rcu_preempt19:17:272
134491450,4ptp4l28505-21apt-get21:25:040
134491450,4ptp4l0-21swapper/323:33:203
134491450,3ptp4l121rcu_preempt22:55:223
134491450,2ptp4l121rcu_preempt19:24:123
134491450,12ptp4l25-21ksoftirqd/121:35:451
134491450,10ptp4l0-21swapper/222:35:082
134491450,10ptp4l0-21swapper/000:35:570
3043899441,2cyclictest121rcu_preempt23:15:202
3043899440,3cyclictest7097-21turbostat.cron19:30:002
3043899440,3cyclictest121rcu_preempt00:10:012
3043899440,2cyclictest121rcu_preempt21:14:272
134491440,9ptp4l0-21swapper/021:41:200
134491440,6ptp4l0-21swapper/222:28:182
134491440,6ptp4l0-21swapper/222:28:182
134491440,4ptp4l0-21swapper/323:54:143
134491440,4ptp4l0-21swapper/222:12:062
134491440,4ptp4l0-21swapper/123:21:231
134491440,4ptp4l0-21swapper/022:00:290
134491440,4ptp4l0-21swapper/021:06:370
134491440,3ptp4l0-21swapper/323:09:393
134491440,3ptp4l0-21swapper/319:53:013
134491440,3ptp4l0-21swapper/122:53:061
134491440,3ptp4l0-21swapper/100:25:201
134491440,2ptp4l0-21swapper/320:40:043
134491440,1ptp4l0-21swapper/320:32:323
134491440,10ptp4l0-21swapper/119:31:141
30438994338,3cyclictest33-21ksoftirqd/221:00:002
30438994313,4cyclictest33-21ksoftirqd/219:20:222
3043899430,2cyclictest121rcu_preempt22:22:272
3043899430,2cyclictest121rcu_preempt20:53:272
134491430,8ptp4l0-21swapper/123:08:331
134491430,5ptp4l31267-21apt-get21:30:122
134491430,5ptp4l3043899cyclictest19:30:132
134491430,5ptp4l0-21swapper/322:15:133
134491430,5ptp4l0-21swapper/321:25:163
134491430,5ptp4l0-21swapper/019:55:170
134491430,4ptp4l0-21swapper/319:35:123
134491430,4ptp4l0-21swapper/119:50:361
134491430,3ptp4l0-21swapper/321:22:253
3043899422,2cyclictest121rcu_preempt22:49:002
134491420,9ptp4l0-21swapper/019:27:280
134491420,5ptp4l22619-21irqstats21:10:180
134491420,5ptp4l0-21swapper/200:05:292
134491420,5ptp4l0-21swapper/122:35:121
134491420,5ptp4l0-21swapper/119:10:011
134491420,4ptp4l5833-21apt-get21:45:131
134491420,4ptp4l12467-21df_inode19:40:143
134491420,3ptp4l0-21swapper/022:59:190
30438994135,3cyclictest33-21ksoftirqd/221:40:002
30438994135,3cyclictest33-21ksoftirqd/221:00:122
3043799410,40cyclictest10169-21kworker/1:020:21:291
134491410,7ptp4l0-21swapper/222:00:172
134491410,5ptp4l13696-21hddtemp_smartct00:20:161
134491410,5ptp4l13090-21iostat20:50:171
134491410,5ptp4l0-21swapper/000:05:190
134491410,4ptp4l6351-21meminfo20:35:203
134491410,4ptp4l3836-21df_inode21:40:141
134491410,4ptp4l30063-21meminfo22:35:213
134491410,4ptp4l29117-21apt-get22:35:130
134491410,4ptp4l23879-21apt-get20:05:123
134491410,4ptp4l13862-21ntp_states22:00:243
134491410,4ptp4l0-21swapper/023:51:520
134491410,4ptp4l0-21swapper/023:20:310
134491410,4ptp4l0-21swapper/020:15:340
134491410,3ptp4l1472-21ntp_states19:15:241
134491400,9ptp4l0-21swapper/021:32:570
134491400,5ptp4l18797-21processes22:10:260
134491400,5ptp4l0-21swapper/322:05:173
134491400,5ptp4l0-21swapper/122:10:141
134491400,5ptp4l0-21swapper/121:55:021
134491400,5ptp4l0-21swapper/120:35:281
134491400,5ptp4l0-21swapper/022:21:070
134491400,5ptp4l0-21swapper/021:35:240
134491400,4ptp4l9404-21apt-get19:35:031
134491400,4ptp4l6894-21meminfo00:05:201
134491400,4ptp4l26385-21df20:10:150
134491400,4ptp4l22481-21ntp_states20:00:230
134491400,4ptp4l17605-21perl21:00:161
134491400,4ptp4l14808-21apt-get22:05:041
134491400,4ptp4l1157-21perl20:25:170
134491400,4ptp4l0-21swapper/321:53:143
134491400,4ptp4l0-21swapper/321:36:403
134491400,4ptp4l0-21swapper/123:30:141
134491400,4ptp4l0-21swapper/122:40:181
134491400,4ptp4l0-21swapper/122:19:461
134491400,4ptp4l0-21swapper/121:15:191
134491400,4ptp4l0-21swapper/120:15:201
134491400,4ptp4l0-21swapper/023:46:030
134491400,4ptp4l0-21swapper/023:12:000
134491400,4ptp4l0-21swapper/023:06:390
134491400,4ptp4l0-21swapper/022:27:520
134491400,4ptp4l0-21swapper/022:27:520
134491400,4ptp4l0-21swapper/021:50:450
134491400,4ptp4l0-21swapper/021:21:410
134491400,4ptp4l0-21swapper/020:35:010
134491400,4ptp4l0-21swapper/020:21:560
134491400,4ptp4l0-21swapper/020:05:270
134491400,4ptp4l0-21swapper/019:30:230
134491400,4ptp4l0-21swapper/000:15:060
134491400,3ptp4l32327-21meminfo23:50:211
134491400,3ptp4l26722-21apt-get23:40:123
134491400,3ptp4l24470-21apt-get22:25:121
134491400,3ptp4l24470-21apt-get22:25:121
134491400,3ptp4l0-21swapper/123:56:121
134491390,5ptp4l23925-21chrt22:21:221
134491390,5ptp4l0-21swapper/022:50:190
134491390,4ptp4l27288-21/usr/sbin/munin22:30:181
134491390,4ptp4l0-21swapper/323:02:283
134491390,4ptp4l0-21swapper/322:50:123
134491390,4ptp4l0-21swapper/322:21:043
134491390,4ptp4l0-21swapper/322:12:303
134491390,4ptp4l0-21swapper/320:47:283
134491390,4ptp4l0-21swapper/300:20:213
134491390,4ptp4l0-21swapper/300:06:173
134491390,4ptp4l0-21swapper/122:55:201
134491390,4ptp4l0-21swapper/121:20:101
134491390,4ptp4l0-21swapper/121:05:121
134491390,4ptp4l0-21swapper/023:43:570
134491390,4ptp4l0-21swapper/022:15:130
134491390,4ptp4l0-21swapper/020:30:090
134491390,4ptp4l0-21swapper/019:45:180
134491390,4ptp4l0-21swapper/019:45:180
134491390,4ptp4l0-21swapper/019:10:090
134491390,3ptp4l9241-21ntp_states21:50:231
134491390,3ptp4l716-21apt-get20:25:143
134491390,3ptp4l2967-21ls22:45:310
134491390,3ptp4l22319-21memory20:00:201
134491390,3ptp4l18986-21ntp_states00:30:231
134491390,3ptp4l12371-21df19:40:131
134491390,3ptp4l0-21swapper/320:19:333
134491380,5ptp4l0-21swapper/320:55:123
134491380,4ptp4l8395-21ls23:00:121
134491380,4ptp4l0-21swapper/323:58:073
134491380,4ptp4l0-21swapper/323:20:113
134491380,4ptp4l0-21swapper/322:44:083
134491380,4ptp4l0-21swapper/322:29:423
134491380,4ptp4l0-21swapper/322:29:413
134491380,4ptp4l0-21swapper/321:30:113
134491380,4ptp4l0-21swapper/321:15:153
134491380,4ptp4l0-21swapper/320:10:303
134491380,4ptp4l0-21swapper/319:45:043
134491380,4ptp4l0-21swapper/319:45:043
134491380,4ptp4l0-21swapper/123:41:021
134491380,4ptp4l0-21swapper/122:45:141
134491380,4ptp4l0-21swapper/121:10:241
134491380,4ptp4l0-21swapper/119:49:021
134491380,4ptp4l0-21swapper/119:49:021
134491380,4ptp4l0-21swapper/100:36:061
134491380,3ptp4l3090-21/usr/sbin/munin19:20:161
134491380,3ptp4l13848-21meminfo23:10:201
134491380,3ptp4l0-21swapper/300:16:513
134491380,3ptp4l0-21swapper/300:13:053
134491380,3ptp4l0-21swapper/123:46:201
134491380,3ptp4l0-21swapper/123:16:101
134491380,3ptp4l0-21swapper/121:28:471
134491380,3ptp4l0-21swapper/120:57:331
134491380,3ptp4l0-21swapper/120:13:271
134491370,4ptp4l0-21swapper/300:00:423
134491370,4ptp4l0-21swapper/119:56:001
134491370,3ptp4l0-21swapper/120:40:521
294822285,10sleep329598-21ls19:05:243
301452174,7sleep20-21swapper/219:10:002
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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