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2026-03-23 - 03:15
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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 Mon Mar 23, 2026 00:45:44)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
116621340,5sleep12118899cyclictest21:55:171
2119099679,16cyclictest30888-21mv00:09:313
21190996412,10cyclictest27871-21chrt21:43:443
134491640,3ptp4l1371-21irqstats20:45:191
2119099635,15cyclictest3201-21/usr/sbin/munin23:10:153
2119099626,10cyclictest0-21swapper/322:15:243
2119099626,10cyclictest0-21swapper/322:15:233
134491620,4ptp4l22649-21meminfo22:40:211
71052610,3sleep07098-21apt-get19:50:000
2119099614,20cyclictest0-21swapper/320:25:273
134491610,19ptp4l0-21swapper/123:25:151
134491600,4ptp4l0-21swapper/119:35:181
134491600,4ptp4l0-21swapper/023:12:040
134491590,4ptp4l0-21swapper/123:55:191
134491580,3ptp4l19495-21latency_hist23:45:001
2119099577,11cyclictest2064-21cat20:45:273
21190995711,11cyclictest7492-21taskset23:19:083
21190995711,11cyclictest7492-21taskset23:19:083
134491570,5ptp4l0-21swapper/123:00:241
134491570,3ptp4l0-21swapper/121:00:241
134491570,10ptp4l9-21ksoftirqd/023:23:080
2119099564,20cyclictest0-21swapper/300:20:173
2119099564,10cyclictest0-21swapper/319:10:253
134491560,4ptp4l0-21swapper/120:32:371
134491560,3ptp4l0-21swapper/022:03:480
21190995510,9cyclictest10331-21/usr/sbin/munin23:25:183
134491550,4ptp4l0-21swapper/100:11:501
134491550,4ptp4l0-21swapper/022:45:340
134491550,4ptp4l0-21swapper/022:45:340
134491550,4ptp4l0-21swapper/021:06:430
134491550,3ptp4l0-21swapper/022:43:560
2119099547,11cyclictest0-21swapper/319:25:433
134491540,4ptp4l0-21swapper/100:33:381
134491540,4ptp4l0-21swapper/023:08:580
21190995313,37cyclictest25368-21taskset21:36:163
134491530,4ptp4l0-21swapper/022:23:210
134491530,4ptp4l0-21swapper/000:24:070
2119099526,10cyclictest0-21swapper/322:45:273
2119099526,10cyclictest0-21swapper/322:45:263
134491520,7ptp4l20350-21ls19:05:253
134491520,4ptp4l0-21swapper/123:23:571
134491520,4ptp4l0-21swapper/121:14:181
134491520,4ptp4l0-21swapper/119:54:481
134491520,4ptp4l0-21swapper/100:25:571
134491520,3ptp4l0-21swapper/200:15:362
134491520,3ptp4l0-21swapper/123:35:011
134491520,3ptp4l0-21swapper/120:22:091
134491510,4ptp4l0-21swapper/021:04:070
134491510,4ptp4l0-21swapper/020:13:580
134491510,3ptp4l0-21swapper/221:36:592
134491510,3ptp4l0-21swapper/220:50:412
134491510,3ptp4l0-21swapper/122:13:301
134491510,3ptp4l0-21swapper/023:51:080
134491510,3ptp4l0-21swapper/000:16:270
134491510,3ptp4l0-21swapper/000:11:140
2119099509,7cyclictest25820-21/usr/sbin/munin19:20:203
2119099509,15cyclictest14809-21cat23:35:013
2119099503,5cyclictest134491ptp4l00:20:003
21190995014,32cyclictest24133-21/usr/sbin/munin23:55:303
134491500,4ptp4l0-21swapper/219:13:422
134491500,4ptp4l0-21swapper/122:54:561
134491500,4ptp4l0-21swapper/022:35:380
134491500,4ptp4l0-21swapper/020:15:220
134491500,4ptp4l0-21swapper/019:36:420
134491500,4ptp4l0-21swapper/019:32:130
134491500,3ptp4l0-21swapper/121:49:081
134491500,3ptp4l0-21swapper/120:26:001
31752490,4sleep20-21swapper/223:10:002
2118999490,4cyclictest183-21jbd2/mmcblk1p1-23:35:192
134491490,5ptp4l0-21swapper/222:35:022
134491490,3ptp4l0-21swapper/221:00:012
134491490,3ptp4l0-21swapper/021:30:230
134491490,3ptp4l0-21swapper/021:30:230
134491490,12ptp4l0-21swapper/023:41:220
134491490,11ptp4l0-21swapper/121:05:211
2119099489,8cyclictest7330-21ssh00:25:283
21190994810,6cyclictest137891phc2sys22:00:463
134491480,4ptp4l121rcu_preempt20:00:181
134491480,4ptp4l0-21swapper/100:39:061
134491480,4ptp4l0-21swapper/023:37:300
134491480,3ptp4l0-21swapper/221:24:522
134491480,3ptp4l0-21swapper/123:16:201
134491480,3ptp4l0-21swapper/123:16:201
134491480,3ptp4l0-21swapper/023:33:480
2119099478,10cyclictest31910-21runrttasks19:30:293
2119099477,6cyclictest0-21swapper/320:19:223
134491470,4ptp4l0-21swapper/100:01:481
134491470,4ptp4l0-21swapper/021:22:080
134491470,3ptp4l0-21swapper/122:46:221
134491470,3ptp4l0-21swapper/122:46:211
134491470,3ptp4l0-21swapper/019:51:570
2119099469,16cyclictest14454-21/usr/sbin/munin20:05:253
2119099468,7cyclictest29778-21ls21:45:273
2119099468,35cyclictest22836-21sed21:30:283
2119099468,35cyclictest22836-21sed21:30:283
21190994610,10cyclictest1301-21snmpd00:31:183
134491460,5ptp4l0-21swapper/219:09:482
134491460,4ptp4l28642-21apt-get22:55:102
134491460,4ptp4l0-21swapper/122:55:491
134491460,4ptp4l0-21swapper/019:21:200
134491460,3ptp4l0-21swapper/119:26:491
134491460,2ptp4l121rcu_preempt19:40:520
46198450,5rtkit-daemon0-21swapper/019:06:400
2119099458,15cyclictest12155-21/usr/sbin/munin20:00:243
2119099455,8cyclictest27401-21grep20:30:273
134491450,9ptp4l0-21swapper/020:55:470
134491450,4ptp4l14399-21apt-get21:15:122
134491450,4ptp4l0-21swapper/123:32:341
134491450,3ptp4l0-21swapper/220:43:242
134491450,3ptp4l0-21swapper/200:33:572
134491450,3ptp4l0-21swapper/120:35:471
134491450,3ptp4l0-21swapper/100:23:161
2119099447,16cyclictest8854-21python21:00:273
2119099445,10cyclictest3469-21ps20:50:193
134491440,9ptp4l0-21swapper/223:28:142
134491440,5ptp4l26361-21hddtemp_smartct21:40:172
134491440,5ptp4l0-21swapper/122:27:221
134491440,4ptp4l8195-21apt-get00:30:110
134491440,4ptp4l28279-21apt-get21:45:130
134491440,3ptp4l0-21swapper/123:48:361
2119099435,5cyclictest0-21swapper/323:01:143
2119099434,36cyclictest401ktimersoftd/321:05:183
134491430,9ptp4l0-21swapper/223:42:502
134491430,9ptp4l0-21swapper/223:14:262
134491430,9ptp4l0-21swapper/219:56:572
134491430,9ptp4l0-21swapper/020:45:360
134491430,5ptp4l22433-21ntp_states21:30:242
134491430,5ptp4l22433-21ntp_states21:30:242
134491430,5ptp4l0-21swapper/022:25:120
134491430,5ptp4l0-21swapper/019:55:110
134491430,4ptp4l9852-21apt-get19:55:121
134491430,4ptp4l2318-21gnome-shell19:44:581
134491430,4ptp4l2195-21ls21:55:280
134491430,4ptp4l0-21swapper/119:34:451
134491430,4ptp4l0-21swapper/022:54:430
134491430,3ptp4l0-21swapper/221:47:182
134491430,3ptp4l0-21swapper/219:20:042
2119099427,11cyclictest0-21swapper/319:42:473
21187994237,3cyclictest9-21ksoftirqd/020:45:000
134491420,9ptp4l0-21swapper/222:18:112
134491420,9ptp4l0-21swapper/222:18:112
134491420,9ptp4l0-21swapper/200:06:042
134491420,8ptp4l0-21swapper/219:39:112
134491420,5ptp4l0-21swapper/319:15:123
134491420,5ptp4l0-21swapper/319:15:123
134491420,5ptp4l0-21swapper/223:20:222
134491420,5ptp4l0-21swapper/221:00:122
134491420,5ptp4l0-21swapper/200:35:232
134491420,5ptp4l0-21swapper/021:35:110
134491420,4ptp4l832-21apt-get23:05:131
134491420,4ptp4l4712-21ntp_states00:20:222
134491420,4ptp4l29828-21ls20:35:270
134491420,4ptp4l18429-21users20:10:271
134491420,4ptp4l12488-21apt-get22:20:131
134491420,4ptp4l12409-21diskstats21:10:142
134491420,4ptp4l0-21swapper/223:04:472
134491420,4ptp4l0-21swapper/222:33:442
134491420,4ptp4l0-21swapper/022:13:460
134491420,3ptp4l497-21apt-get20:45:122
134491420,3ptp4l17079-21apt-get22:30:101
134491420,3ptp4l0-21swapper/121:40:591
2119099418,30cyclictest14385-21/usr/sbin/munin21:15:223
2119099416,5cyclictest0-21swapper/321:20:403
21190994111,27cyclictest14217-21taskset22:21:033
21187994136,3cyclictest9-21ksoftirqd/019:20:000
21187994136,3cyclictest9-21ksoftirqd/019:20:000
134491410,8ptp4l0-21swapper/220:09:152
134491410,5ptp4l22365-21/usr/sbin/munin20:20:200
134491410,5ptp4l0-21swapper/120:50:211
134491410,5ptp4l0-21swapper/023:00:230
134491410,5ptp4l0-21swapper/019:25:120
134491410,4ptp4l6465-21memory23:15:180
134491410,4ptp4l6465-21memory23:15:180
134491410,4ptp4l23685-21apt-get20:25:130
134491410,4ptp4l13215-21ntp_states21:10:220
134491410,4ptp4l0-21swapper/222:20:222
134491410,4ptp4l0-21swapper/123:51:241
134491410,4ptp4l0-21swapper/100:05:111
134491410,4ptp4l0-21swapper/023:58:460
134491410,4ptp4l0-21swapper/021:40:150
134491410,4ptp4l0-21swapper/021:19:140
134491410,4ptp4l0-21swapper/000:36:350
134491410,4ptp4l0-21swapper/000:00:220
134491410,3ptp4l6691-21ntp_states22:05:230
134491410,3ptp4l28811-21apt-get00:05:100
134491410,3ptp4l24463-21meminfo19:15:202
134491410,3ptp4l24463-21meminfo19:15:202
134491410,3ptp4l21320-21apt-get21:30:131
134491410,3ptp4l21320-21apt-get21:30:131
134491410,3ptp4l0-21swapper/122:15:351
134491410,3ptp4l0-21swapper/122:15:341
134491410,3ptp4l0-21swapper/023:28:530
2119099406,5cyclictest0-21swapper/322:35:133
134491400,5ptp4l0-21swapper/320:55:243
134491400,5ptp4l0-21swapper/220:15:382
134491400,5ptp4l0-21swapper/123:15:001
134491400,5ptp4l0-21swapper/119:25:001
134491400,5ptp4l0-21swapper/023:45:150
134491400,4ptp4l41-21ksoftirqd/322:27:243
134491400,4ptp4l24563-21memory21:35:191
134491400,4ptp4l21522-21df_inode19:10:161
134491400,4ptp4l19661-21/usr/sbin/munin23:45:133
134491400,4ptp4l0-21swapper/223:58:502
134491400,4ptp4l0-21swapper/223:50:242
134491400,4ptp4l0-21swapper/222:45:542
134491400,4ptp4l0-21swapper/222:45:542
134491400,4ptp4l0-21swapper/222:40:252
134491400,4ptp4l0-21swapper/222:03:092
134491400,4ptp4l0-21swapper/200:25:442
134491400,4ptp4l0-21swapper/120:40:231
134491400,4ptp4l0-21swapper/120:09:011
134491400,4ptp4l0-21swapper/119:15:141
134491400,4ptp4l0-21swapper/119:15:141
134491400,4ptp4l0-21swapper/119:05:111
134491400,4ptp4l0-21swapper/021:50:240
134491400,3ptp4l7242-21users22:05:281
134491400,3ptp4l2795-21apt-get22:00:011
134491400,3ptp4l19945-21iostat_ios22:35:171
134491400,3ptp4l0-21swapper/119:46:581
134491400,3ptp4l0-21swapper/022:34:000
2119099392,15cyclictest8299-21irqrtprio19:50:213
134491390,5ptp4l0-21swapper/223:33:512
134491390,5ptp4l0-21swapper/121:50:031
134491390,5ptp4l0-21swapper/022:15:250
134491390,5ptp4l0-21swapper/022:15:250
134491390,4ptp4l26866-21sed20:30:190
134491390,4ptp4l0-21swapper/323:50:263
134491390,4ptp4l0-21swapper/322:10:403
134491390,4ptp4l0-21swapper/322:07:223
134491390,4ptp4l0-21swapper/321:55:203
134491390,4ptp4l0-21swapper/321:51:183
134491390,4ptp4l0-21swapper/321:14:283
134491390,4ptp4l0-21swapper/319:56:583
134491390,4ptp4l0-21swapper/222:10:242
134491390,4ptp4l0-21swapper/222:06:102
134491390,4ptp4l0-21swapper/221:57:442
134491390,4ptp4l0-21swapper/221:53:062
134491390,4ptp4l0-21swapper/221:26:222
134491390,4ptp4l0-21swapper/221:05:272
134491390,4ptp4l0-21swapper/220:29:172
134491390,4ptp4l0-21swapper/220:11:122
134491390,4ptp4l0-21swapper/219:47:372
134491390,4ptp4l0-21swapper/219:40:572
134491390,4ptp4l0-21swapper/219:30:282
134491390,4ptp4l0-21swapper/219:25:142
134491390,4ptp4l0-21swapper/121:20:191
134491390,4ptp4l0-21swapper/121:17:321
134491390,4ptp4l0-21swapper/120:18:171
134491390,4ptp4l0-21swapper/100:15:121
134491390,4ptp4l0-21swapper/021:25:110
134491390,4ptp4l0-21swapper/020:51:410
134491390,4ptp4l0-21swapper/020:05:080
134491390,4ptp4l0-21swapper/020:01:020
134491390,4ptp4l0-21swapper/019:13:590
134491390,3ptp4l5755-21iostat20:55:181
134491390,3ptp4l29065-21perl22:55:130
134491390,3ptp4l0-21swapper/000:25:290
93732380,5sleep30-21swapper/323:20:243
46198380,4rtkit-daemon0-21swapper/322:52:133
134491380,5ptp4l0-21swapper/200:10:342
134491380,4ptp4l19200-21cut21:25:131
134491380,4ptp4l0-21swapper/322:40:153
134491380,4ptp4l0-21swapper/320:43:193
134491380,4ptp4l0-21swapper/320:10:583
134491380,4ptp4l0-21swapper/319:36:533
134491380,4ptp4l0-21swapper/300:00:143
134491380,4ptp4l0-21swapper/223:49:122
134491380,4ptp4l0-21swapper/223:15:032
134491380,4ptp4l0-21swapper/223:15:032
134491380,4ptp4l0-21swapper/222:51:362
134491380,4ptp4l0-21swapper/222:25:162
134491380,4ptp4l0-21swapper/220:35:092
134491380,4ptp4l0-21swapper/220:20:012
134491380,4ptp4l0-21swapper/220:02:002
134491380,4ptp4l0-21swapper/200:00:192
134491380,3ptp4l0-21swapper/321:25:253
134491380,3ptp4l0-21swapper/300:35:163
134491380,3ptp4l0-21swapper/219:50:582
134491370,5ptp4l0-21swapper/322:55:103
134491370,4ptp4l0-21swapper/322:34:593
134491370,4ptp4l0-21swapper/320:35:123
134491370,4ptp4l0-21swapper/320:20:263
134491370,4ptp4l0-21swapper/220:32:522
134491360,3ptp4l0-21swapper/323:43:563
134491360,3ptp4l0-21swapper/323:37:163
134491360,3ptp4l0-21swapper/300:10:183
134491350,3ptp4l0-21swapper/323:09:583
134491310,3ptp4l0-21swapper/319:48:003
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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