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2026-09-09 - 12:49
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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 all highest latencies:
System rackdslot1.osadl.org (updated Wed Sep 09, 2026 00:45:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
959821570,3sleep20-21swapper/220:45:262
2846399802,76cyclictest0-21swapper/200:20:292
43792720,4sleep04384-21irqrtprio21:45:180
2846399672,63cyclictest0-21swapper/220:40:092
134491650,3ptp4l18675-21ntp_states21:05:231
134491640,5ptp4l5392-21sshd21:46:231
2846199611,16cyclictest0-21swapper/023:00:250
134491610,4ptp4l0-21swapper/122:30:241
134491600,3ptp4l0-21swapper/221:43:272
134491590,4ptp4l17123-21taskset21:02:401
2846399581,55cyclictest0-21swapper/221:27:492
134491580,3ptp4l0-21swapper/223:45:262
134491580,3ptp4l0-21swapper/019:25:150
2846199571,15cyclictest29036-21date21:30:000
134491570,3ptp4l8744-21apt-get00:15:112
134491570,3ptp4l0-21swapper/123:27:521
134491570,3ptp4l0-21swapper/121:30:281
134491560,3ptp4l15670-21df_inode23:20:150
134491550,4ptp4l0-21swapper/122:39:181
134491550,4ptp4l0-21swapper/122:39:181
134491550,4ptp4l0-21swapper/119:32:131
2846199543,15cyclictest30020-21ntpq20:20:220
134491540,4ptp4l0-21swapper/119:05:271
134491540,3ptp4l0-21swapper/120:55:261
134491540,3ptp4l0-21swapper/019:15:350
2846199536,6cyclictest30334-21ntpq22:40:240
2846199535,6cyclictest0-21swapper/021:05:180
134491530,2ptp4l0-21swapper/119:29:371
134491530,12ptp4l26687-21iostat19:05:180
2846199521,9cyclictest1-21systemd20:15:240
134491520,4ptp4l0-21swapper/223:56:012
134491520,4ptp4l0-21swapper/119:50:111
134491520,3ptp4l0-21swapper/119:39:531
2846199517,7cyclictest0-21swapper/000:00:150
134491510,4ptp4l0-21swapper/121:10:241
2846199506,6cyclictest0-21swapper/023:05:120
2846199505,7cyclictest26249-21cat20:15:010
2846199501,15cyclictest28733-21df_abs19:10:160
2846199501,10cyclictest14177-21grep22:05:240
134491500,4ptp4l0-21swapper/223:05:032
134491500,3ptp4l0-21swapper/221:09:122
134491500,3ptp4l0-21swapper/200:26:242
134491500,3ptp4l0-21swapper/122:55:591
134491500,3ptp4l0-21swapper/119:10:211
2846199495,6cyclictest0-21swapper/020:35:200
2846199492,4cyclictest0-21swapper/021:20:250
2846199490,7cyclictest27133-21df_abs22:35:140
2846199490,7cyclictest27133-21df_abs22:35:140
134491490,4ptp4l0-21swapper/223:40:512
134491490,4ptp4l0-21swapper/123:06:141
134491490,4ptp4l0-21swapper/120:48:341
134491490,4ptp4l0-21swapper/120:10:491
134491490,4ptp4l0-21swapper/100:19:171
134491490,10ptp4l0-21swapper/220:56:472
2846199488,7cyclictest0-21swapper/020:50:240
2846199480,9cyclictest2691-21switchtime21:40:240
2846199480,10cyclictest426-21date23:55:260
2846199478,6cyclictest0-21swapper/020:30:240
2846199476,6cyclictest0-21swapper/019:30:200
2846199473,7cyclictest25684-21netstat22:30:210
134491470,5ptp4l0-21swapper/200:30:132
134491470,4ptp4l0-21swapper/122:49:421
134491470,2ptp4l0-21swapper/123:03:421
134491470,1ptp4l231rcuc/121:25:081
28461994643,2cyclictest111rcuc/022:45:250
2846199464,15cyclictest20510-21uname20:00:230
2846199460,4cyclictest0-21swapper/021:30:280
134491460,6ptp4l0-21swapper/023:25:250
134491460,4ptp4l0-21swapper/223:35:552
134491460,10ptp4l0-21swapper/020:47:150
28464994535,7cyclictest41-21ksoftirqd/323:20:213
28463994510,3cyclictest7717-21sed19:35:012
134491450,5ptp4l0-21swapper/221:10:132
134491450,4ptp4l2318-21gnome-shell21:04:590
134491450,4ptp4l0-21swapper/200:05:042
134491450,4ptp4l0-21swapper/123:13:501
134491450,4ptp4l0-21swapper/122:07:271
134491450,10ptp4l0-21swapper/120:24:311
134491440,8ptp4l0-21swapper/120:35:181
134491440,4ptp4l0-21swapper/322:28:063
134491440,3ptp4l33-21ksoftirqd/222:07:462
134491440,3ptp4l33-21ksoftirqd/219:13:492
134491440,3ptp4l0-21swapper/220:01:432
134491440,3ptp4l0-21swapper/123:30:441
28463994336,4cyclictest25189-21irqrtprio22:30:182
2846199430,5cyclictest12010-21systemctl23:10:250
134491430,9ptp4l33-21ksoftirqd/223:33:292
134491430,9ptp4l0-21swapper/221:50:082
134491430,9ptp4l0-21swapper/219:17:222
134491430,9ptp4l0-21swapper/200:39:152
134491430,8ptp4l0-21swapper/220:38:282
134491430,6ptp4l0-21swapper/223:20:272
134491430,4ptp4l0-21swapper/100:00:451
134491430,3ptp4l0-21swapper/122:16:221
134491430,3ptp4l0-21swapper/120:06:271
28464994233,7cyclictest41-21ksoftirqd/321:45:123
2846199424,4cyclictest0-21swapper/000:35:210
2846199423,6cyclictest0-21swapper/022:50:290
134491420,9ptp4l0-21swapper/221:15:392
134491420,8ptp4l0-21swapper/219:52:162
134491420,7ptp4l23169-21switchtime20:05:263
134491420,5ptp4l25897-21grep21:20:292
134491420,4ptp4l15655-21apt-get00:30:123
134491420,4ptp4l13357-21apt-get00:25:123
134491420,4ptp4l0-21swapper/122:26:371
134491420,3ptp4l10547-21apt-get22:00:141
134491420,10ptp4l0-21swapper/219:45:192
2846199414,6cyclictest0-21swapper/021:50:260
2846199412,6cyclictest0-21swapper/022:55:140
2846199410,6cyclictest10165-21ls00:15:260
134491410,5ptp4l4169-21hddtemp_smartct00:05:171
134491410,5ptp4l25811-21/usr/sbin/munin21:20:281
134491410,5ptp4l0-21swapper/323:25:163
134491410,5ptp4l0-21swapper/123:58:531
134491410,5ptp4l0-21swapper/022:15:170
134491410,5ptp4l0-21swapper/021:55:260
134491410,5ptp4l0-21swapper/000:10:200
134491410,4ptp4l11111-21iostat22:00:182
134491410,4ptp4l0-21swapper/121:53:301
134491410,4ptp4l0-21swapper/023:35:290
134491410,4ptp4l0-21swapper/000:22:280
134491410,3ptp4l32172-21memory20:25:220
134491410,3ptp4l30905-21users22:40:301
134491410,3ptp4l1827-21ntp_states19:20:222
134491410,3ptp4l12892-21apt-get20:55:130
134491410,3ptp4l0-21swapper/321:05:593
134491410,3ptp4l0-21swapper/019:57:000
28464994035,3cyclictest41-21ksoftirqd/323:20:013
2846499403,2cyclictest121rcu_preempt23:10:273
2846199401,7cyclictest32696-21mailstats21:35:260
134491400,5ptp4l0-21swapper/323:45:203
134491400,5ptp4l0-21swapper/220:21:152
134491400,5ptp4l0-21swapper/119:15:201
134491400,5ptp4l0-21swapper/022:00:260
134491400,4ptp4l6244-21diskstats21:50:183
134491400,4ptp4l20163-21df23:30:130
134491400,4ptp4l16091-21wc19:50:250
134491400,4ptp4l0-21swapper/323:54:593
134491400,4ptp4l0-21swapper/323:05:153
134491400,4ptp4l0-21swapper/321:37:323
134491400,4ptp4l0-21swapper/321:10:233
134491400,4ptp4l0-21swapper/320:35:273
134491400,4ptp4l0-21swapper/300:21:133
134491400,4ptp4l0-21swapper/300:08:443
134491400,4ptp4l0-21swapper/223:52:252
134491400,4ptp4l0-21swapper/223:25:112
134491400,4ptp4l0-21swapper/223:16:462
134491400,4ptp4l0-21swapper/222:36:412
134491400,4ptp4l0-21swapper/222:36:412
134491400,4ptp4l0-21swapper/221:01:342
134491400,4ptp4l0-21swapper/200:00:122
134491400,4ptp4l0-21swapper/122:20:231
134491400,4ptp4l0-21swapper/121:42:581
134491400,4ptp4l0-21swapper/121:15:291
134491400,4ptp4l0-21swapper/120:52:201
134491400,4ptp4l0-21swapper/023:51:390
134491400,4ptp4l0-21swapper/022:28:130
134491400,4ptp4l0-21swapper/000:32:390
134491400,3ptp4l8803-21iostat_ios21:55:211
134491400,3ptp4l8232-21apt-get21:55:142
134491400,3ptp4l15828-21perl22:10:140
134491400,3ptp4l13091-21iostat_ios19:45:160
134491400,3ptp4l11342-21ntp_states19:40:242
134491400,3ptp4l0-21swapper/219:59:152
134491400,3ptp4l0-21swapper/120:41:391
28464993935,3cyclictest41-21ksoftirqd/322:40:203
28464993934,3cyclictest41-21ksoftirqd/321:20:013
28464993933,3cyclictest41-21ksoftirqd/320:30:003
2846199390,6cyclictest11795-21ls19:40:290
134491390,5ptp4l0-21swapper/320:20:233
134491390,5ptp4l0-21swapper/123:15:231
134491390,4ptp4l2488-21awk20:30:242
134491390,4ptp4l13610-21ntpq19:45:201
134491390,4ptp4l1301-21snmpd19:14:413
134491390,4ptp4l0-21swapper/323:55:023
134491390,4ptp4l0-21swapper/323:40:183
134491390,4ptp4l0-21swapper/322:55:223
134491390,4ptp4l0-21swapper/322:00:283
134491390,4ptp4l0-21swapper/321:20:253
134491390,4ptp4l0-21swapper/320:48:563
134491390,4ptp4l0-21swapper/320:30:243
134491390,4ptp4l0-21swapper/319:50:073
134491390,4ptp4l0-21swapper/300:38:503
134491390,4ptp4l0-21swapper/300:00:273
134491390,4ptp4l0-21swapper/222:45:272
134491390,4ptp4l0-21swapper/222:41:012
134491390,4ptp4l0-21swapper/222:14:522
134491390,4ptp4l0-21swapper/221:36:062
134491390,4ptp4l0-21swapper/221:30:222
134491390,4ptp4l0-21swapper/220:26:412
134491390,4ptp4l0-21swapper/219:39:292
134491390,4ptp4l0-21swapper/219:28:122
134491390,4ptp4l0-21swapper/123:35:181
134491390,4ptp4l0-21swapper/122:50:201
134491390,4ptp4l0-21swapper/120:27:561
134491390,4ptp4l0-21swapper/120:15:201
134491390,4ptp4l0-21swapper/120:00:221
134491390,4ptp4l0-21swapper/100:22:411
134491390,4ptp4l0-21swapper/100:10:281
134491390,4ptp4l0-21swapper/023:40:150
134491390,4ptp4l0-21swapper/022:21:050
134491390,4ptp4l0-21swapper/021:15:130
134491390,4ptp4l0-21swapper/021:10:020
134491390,4ptp4l0-21swapper/000:25:310
134491390,3ptp4l8752-21irqstats19:35:190
134491390,3ptp4l666-21apt-get19:20:131
134491390,3ptp4l31572-21df21:35:151
134491390,3ptp4l22350-21iostat20:05:180
134491390,3ptp4l0-21swapper/222:15:272
134491390,3ptp4l0-21swapper/119:41:321
134491390,3ptp4l0-21swapper/020:42:040
134491390,3ptp4l0-21swapper/019:20:230
134491390,3ptp4l0-21swapper/000:05:110
134491390,2ptp4l0-21swapper/319:45:393
28464993834,2cyclictest41-21ksoftirqd/322:30:173
134491380,4ptp4l2846299cyclictest00:37:051
134491380,4ptp4l0-21swapper/322:14:503
134491380,4ptp4l0-21swapper/321:57:053
134491380,4ptp4l0-21swapper/321:40:103
134491380,4ptp4l0-21swapper/321:30:253
134491380,4ptp4l0-21swapper/320:59:213
134491380,4ptp4l0-21swapper/320:41:143
134491380,4ptp4l0-21swapper/320:18:033
134491380,4ptp4l0-21swapper/319:55:223
134491380,4ptp4l0-21swapper/300:15:023
134491380,4ptp4l0-21swapper/223:10:202
134491380,4ptp4l0-21swapper/223:02:212
134491380,4ptp4l0-21swapper/222:55:442
134491380,4ptp4l0-21swapper/222:26:002
134491380,4ptp4l0-21swapper/221:45:562
134491380,4ptp4l0-21swapper/220:52:372
134491380,4ptp4l0-21swapper/220:10:002
134491380,4ptp4l0-21swapper/220:06:402
134491380,4ptp4l0-21swapper/200:12:442
134491380,4ptp4l0-21swapper/123:54:571
134491380,4ptp4l0-21swapper/123:48:101
134491380,4ptp4l0-21swapper/123:24:151
134491380,4ptp4l0-21swapper/122:11:271
134491380,4ptp4l0-21swapper/100:30:241
134491380,4ptp4l0-21swapper/100:26:471
134491380,4ptp4l0-21swapper/023:48:080
134491380,3ptp4l0-21swapper/323:30:373
134491380,3ptp4l0-21swapper/220:16:562
134491380,3ptp4l0-21swapper/123:40:151
134491380,3ptp4l0-21swapper/120:30:141
134491380,3ptp4l0-21swapper/119:56:431
134491380,3ptp4l0-21swapper/023:15:180
28464993734,2cyclictest41-21ksoftirqd/321:30:003
28464993733,2cyclictest41-21ksoftirqd/322:25:003
28464993732,3cyclictest41-21ksoftirqd/322:35:123
28464993732,3cyclictest41-21ksoftirqd/322:35:123
28464993732,3cyclictest41-21ksoftirqd/319:25:183
134491370,4ptp4l0-21swapper/323:35:213
134491370,4ptp4l0-21swapper/222:53:072
134491370,3ptp4l3665-21sed22:55:003
134491370,3ptp4l2846499cyclictest19:39:303
134491370,3ptp4l0-21swapper/319:22:193
134491370,3ptp4l0-21swapper/300:12:363
134491370,3ptp4l0-21swapper/222:21:242
28464993632,3cyclictest41-21ksoftirqd/320:00:203
28464993631,3cyclictest41-21ksoftirqd/320:15:013
28464993630,3cyclictest41-21ksoftirqd/323:00:193
28464993630,3cyclictest41-21ksoftirqd/322:20:013
28464993630,3cyclictest41-21ksoftirqd/322:05:183
134491360,4ptp4l0-21swapper/320:50:183
134491360,3ptp4l0-21swapper/321:02:113
134491360,3ptp4l0-21swapper/319:40:203
134491360,3ptp4l0-21swapper/319:15:483
134491350,3ptp4l0-21swapper/319:32:333
134491330,3ptp4l0-21swapper/322:47:193
272112134,4sleep30-21swapper/319:05:233
280062123,4sleep20-21swapper/219:07:552
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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