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2026-08-09 - 05:43
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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 Sun Aug 09, 2026 00:45:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
134491790,10ptp4l14612-21sshd19:07:130
15122996434,7cyclictest41-21ksoftirqd/320:00:263
134491610,4ptp4l0-21swapper/119:35:201
15122996032,4cyclictest41-21ksoftirqd/321:18:313
15122996028,6cyclictest41-21ksoftirqd/321:00:163
15122996028,4cyclictest41-21ksoftirqd/322:10:193
15120996011,4cyclictest25-21ksoftirqd/120:35:001
15120996011,4cyclictest25-21ksoftirqd/120:35:001
15122995924,7cyclictest41-21ksoftirqd/321:45:023
15122995822,7cyclictest41-21ksoftirqd/323:15:143
1511999587,6cyclictest0-21swapper/021:45:160
1511999587,6cyclictest0-21swapper/021:40:270
1511999584,10cyclictest12154-21sed22:30:260
134491580,3ptp4l0-21swapper/223:00:272
134491580,3ptp4l0-21swapper/121:55:241
1511999578,7cyclictest0-21swapper/022:05:160
1511999570,12cyclictest8766-21sed22:25:160
134491570,4ptp4l0-21swapper/222:16:592
134491570,3ptp4l0-21swapper/220:08:142
15122995625,7cyclictest41-21ksoftirqd/319:25:213
15122995623,7cyclictest41-21ksoftirqd/323:49:463
15120995618,10cyclictest25-21ksoftirqd/123:40:001
15120995618,10cyclictest25-21ksoftirqd/123:40:001
1511999567,6cyclictest0-21swapper/021:50:160
1511999567,6cyclictest0-21swapper/020:10:170
1511999567,6cyclictest0-21swapper/019:40:180
1511999561,11cyclictest4752-21grep21:05:210
139772560,5sleep113979-21phc2sys20:15:261
134491560,3ptp4l0-21swapper/223:20:322
134491560,3ptp4l0-21swapper/020:15:220
212102550,5sleep20-21swapper/220:30:282
212102550,5sleep20-21swapper/220:30:282
1512299553,5cyclictest41-21ksoftirqd/322:30:273
15122995526,3cyclictest41-21ksoftirqd/321:30:283
1511999555,7cyclictest0-21swapper/021:15:260
1511999554,10cyclictest11614-21missed_timers21:20:220
1511999553,11cyclictest9924-21timerwakeupswit23:35:280
1511999553,11cyclictest9924-21timerwakeupswit23:35:280
1511999552,16cyclictest0-21swapper/019:25:270
1511999551,9cyclictest1229-21sed21:00:000
1511999551,12cyclictest1-21systemd23:10:250
134491550,4ptp4l0-21swapper/122:53:281
134491550,4ptp4l0-21swapper/122:30:321
134491550,4ptp4l0-21swapper/100:02:221
134491550,3ptp4l0-21swapper/223:46:502
134491550,3ptp4l0-21swapper/020:35:410
134491550,2ptp4l6125-21apt-get23:30:132
1512299545,8cyclictest41-21ksoftirqd/321:25:283
1512299545,6cyclictest41-21ksoftirqd/320:10:003
1512299545,10cyclictest6445-21df_abs22:20:163
1512299544,6cyclictest0-21swapper/322:15:263
1512299542,7cyclictest0-21swapper/321:37:163
1512299542,10cyclictest0-21swapper/319:10:213
1512299540,6cyclictest5137-21taskset19:55:293
1511999542,10cyclictest28911-21latency_hist20:50:000
134491540,4ptp4l0-21swapper/200:06:122
134491540,4ptp4l0-21swapper/123:12:391
134491540,4ptp4l0-21swapper/119:16:171
1512299533,5cyclictest41-21ksoftirqd/322:10:013
1512299532,6cyclictest41-21ksoftirqd/322:35:283
15122995322,3cyclictest41-21ksoftirqd/323:35:293
15122995322,3cyclictest41-21ksoftirqd/323:35:293
1511999538,17cyclictest17884-21ls23:55:140
1511999537,11cyclictest0-21swapper/020:00:190
1511999533,16cyclictest25321-21missed_timers20:40:220
1511999533,11cyclictest31100-21sed00:20:270
1511999533,10cyclictest5108-21sed19:55:280
1511999532,6cyclictest1802-21df_abs22:10:170
1511999532,10cyclictest3635-21latency_hist23:25:000
1511999530,10cyclictest418-21cat00:25:210
134491530,3ptp4l0-21swapper/121:31:091
1512299525,7cyclictest41-21ksoftirqd/321:10:173
1512299523,7cyclictest41-21ksoftirqd/300:25:153
15122995220,7cyclictest41-21ksoftirqd/319:24:563
1512299520,7cyclictest41-21ksoftirqd/323:10:143
1511999524,10cyclictest29849-21irqrtprio22:00:190
134491520,4ptp4l0-21swapper/221:35:042
134491520,3ptp4l0-21swapper/222:02:472
1512299515,7cyclictest41-21ksoftirqd/320:30:153
1512299515,7cyclictest41-21ksoftirqd/320:30:153
1512299515,7cyclictest41-21ksoftirqd/320:10:153
1512299515,7cyclictest41-21ksoftirqd/300:05:173
1512299514,9cyclictest41-21ksoftirqd/320:20:273
1512299514,7cyclictest41-21ksoftirqd/300:30:203
1512299514,6cyclictest41-21ksoftirqd/323:05:003
1512299513,6cyclictest41-21ksoftirqd/322:40:243
1512299512,7cyclictest0-21swapper/323:07:353
1512299512,6cyclictest41-21ksoftirqd/322:45:183
1512299511,7cyclictest41-21ksoftirqd/323:55:193
1512299511,6cyclictest41-21ksoftirqd/300:00:173
1512299510,7cyclictest41-21ksoftirqd/322:50:183
1512299510,6cyclictest0-21swapper/319:40:183
1512299510,13cyclictest41-21ksoftirqd/300:35:243
15120995117,7cyclictest25-21ksoftirqd/122:20:011
15120995117,3cyclictest25-21ksoftirqd/121:00:001
1511999517,6cyclictest15243-21latency_hist21:30:000
1511999515,9cyclictest19989-21/usr/sbin/munin00:00:200
134491510,4ptp4l0-21swapper/123:27:431
134491510,3ptp4l0-21swapper/223:26:242
134491510,3ptp4l0-21swapper/221:41:252
127622510,4sleep20-21swapper/221:25:002
1512299505,7cyclictest41-21ksoftirqd/320:45:163
1512299505,7cyclictest41-21ksoftirqd/320:35:143
1512299505,7cyclictest41-21ksoftirqd/319:35:003
1512299504,7cyclictest41-21ksoftirqd/323:25:243
1512299504,7cyclictest41-21ksoftirqd/323:25:003
1512299503,6cyclictest41-21ksoftirqd/321:25:003
1512299503,6cyclictest0-21swapper/320:25:293
1512299502,6cyclictest41-21ksoftirqd/320:15:243
1512299502,6cyclictest0-21swapper/322:57:593
1512299502,11cyclictest0-21swapper/321:40:223
1512299502,10cyclictest0-21swapper/322:00:123
1511999500,11cyclictest7683-21sed23:30:290
134491500,5ptp4l0-21swapper/321:55:153
134491500,5ptp4l0-21swapper/120:28:581
134491500,4ptp4l0-21swapper/222:26:412
134491500,4ptp4l0-21swapper/221:15:552
134491500,4ptp4l0-21swapper/120:22:191
134491500,4ptp4l0-21swapper/119:26:391
134491500,4ptp4l0-21swapper/119:12:221
134491500,4ptp4l0-21swapper/100:24:281
1512299495,7cyclictest41-21ksoftirqd/322:25:233
1512299493,5cyclictest41-21ksoftirqd/319:35:143
1512299492,6cyclictest0-21swapper/320:55:173
15122994925,8cyclictest41-21ksoftirqd/321:50:113
1512299490,5cyclictest41-21ksoftirqd/320:40:273
1511999497,6cyclictest1879-21irqrtprio19:50:200
134491490,4ptp4l0-21swapper/120:48:301
1512299482,6cyclictest0-21swapper/323:40:163
1512299481,5cyclictest41-21ksoftirqd/319:15:153
1512299480,6cyclictest6342-21df_abs23:30:163
15120994817,7cyclictest25-21ksoftirqd/122:40:001
1511999481,10cyclictest0-21swapper/023:15:230
134491480,4ptp4l0-21swapper/223:10:102
134491480,4ptp4l0-21swapper/119:20:131
1512299475,7cyclictest41-21ksoftirqd/323:50:143
1512299475,7cyclictest41-21ksoftirqd/319:45:163
1512299474,6cyclictest41-21ksoftirqd/320:50:153
15120994712,3cyclictest25-21ksoftirqd/123:40:251
1511999476,6cyclictest0-21swapper/021:10:240
1511999475,8cyclictest18546-21ntpq19:15:220
1511999475,6cyclictest30802-21awk20:50:290
1511999474,5cyclictest0-21swapper/000:05:310
134491470,9ptp4l0-21swapper/119:06:051
134491470,4ptp4l0-21swapper/222:33:112
134491470,4ptp4l0-21swapper/221:27:182
134491470,4ptp4l0-21swapper/221:10:452
134491470,4ptp4l0-21swapper/123:49:341
134491470,3ptp4l0-21swapper/222:45:502
1512299464,8cyclictest41-21ksoftirqd/321:05:263
1512299463,8cyclictest41-21ksoftirqd/300:20:203
1512299463,7cyclictest41-21ksoftirqd/319:55:013
1512299463,6cyclictest41-21ksoftirqd/300:15:003
15120994615,3cyclictest25-21ksoftirqd/122:25:201
15120994610,7cyclictest25-21ksoftirqd/123:20:261
1511999468,7cyclictest0-21swapper/022:35:250
1511999467,4cyclictest134491ptp4l19:35:240
1511999462,9cyclictest0-21swapper/000:15:170
1511999462,11cyclictest2826-21cat00:30:200
134491460,4ptp4l0-21swapper/223:54:432
134491460,4ptp4l0-21swapper/121:18:261
134491460,4ptp4l0-21swapper/100:05:521
134491460,3ptp4l0-21swapper/023:08:480
134491460,12ptp4l0-21swapper/220:45:192
1512299452,6cyclictest0-21swapper/300:16:103
15120994516,8cyclictest25-21ksoftirqd/121:10:141
15120994513,8cyclictest25-21ksoftirqd/122:20:261
15120994513,7cyclictest25-21ksoftirqd/121:00:221
1511999457,6cyclictest0-21swapper/021:35:160
1511999456,4cyclictest134491ptp4l22:15:120
1511999455,6cyclictest15679-21tune2fs21:30:160
134491450,4ptp4l29148-21apt-get20:50:132
134491450,4ptp4l0-21swapper/223:36:312
134491450,4ptp4l0-21swapper/223:36:312
134491450,4ptp4l0-21swapper/123:02:211
134491450,3ptp4l0-21swapper/222:36:572
134491450,3ptp4l0-21swapper/122:08:181
15120994414,8cyclictest25-21ksoftirqd/122:55:141
15120994411,4cyclictest25-21ksoftirqd/122:50:011
1511999446,5cyclictest11318-21ps23:40:190
1511999444,4cyclictest0-21swapper/000:35:280
1511999443,8cyclictest15140-21/usr/sbin/munin19:10:260
1511999442,10cyclictest0-21swapper/023:01:330
134491440,3ptp4l0-21swapper/222:22:542
134491440,3ptp4l0-21swapper/122:01:241
134491440,10ptp4l0-21swapper/222:44:112
1512099438,10cyclictest25-21ksoftirqd/100:15:141
15120994315,4cyclictest25-21ksoftirqd/123:05:281
15120994313,6cyclictest25-21ksoftirqd/100:30:271
15120994312,8cyclictest25-21ksoftirqd/120:45:011
15120994310,8cyclictest25-21ksoftirqd/123:55:191
1511999434,11cyclictest20892-21awk19:20:230
134491430,9ptp4l0-21swapper/223:09:002
134491430,9ptp4l0-21swapper/220:56:132
134491430,9ptp4l0-21swapper/200:33:122
134491430,4ptp4l0-21swapper/221:55:252
134491430,3ptp4l0-21swapper/121:50:411
134491430,3ptp4l0-21swapper/020:26:110
134491430,10ptp4l0-21swapper/219:42:022
134491430,10ptp4l0-21swapper/219:18:172
1512099427,8cyclictest25-21ksoftirqd/121:45:011
1512099427,8cyclictest25-21ksoftirqd/119:50:151
134491420,5ptp4l30260-21ntp_states20:50:231
134491420,5ptp4l0-21swapper/021:00:220
134491420,4ptp4l15694-21diskstats23:50:141
134491420,4ptp4l0-21swapper/200:29:302
134491420,4ptp4l0-21swapper/119:48:211
15121994129,10cyclictest33-21ksoftirqd/221:49:552
1512099418,9cyclictest25-21ksoftirqd/122:40:171
1512099414,8cyclictest25-21ksoftirqd/100:35:291
15120994136,3cyclictest25-21ksoftirqd/121:22:581
15120994136,3cyclictest25-21ksoftirqd/120:35:131
15120994136,3cyclictest25-21ksoftirqd/120:05:251
15120994135,4cyclictest25-21ksoftirqd/120:10:281
15120994135,3cyclictest25-21ksoftirqd/123:35:001
1511999410,7cyclictest4251-21hddtemp_smartct23:25:150
134491410,9ptp4l0-21swapper/222:07:262
134491410,9ptp4l0-21swapper/220:38:422
134491410,9ptp4l0-21swapper/219:56:192
134491410,6ptp4l0-21swapper/219:06:272
134491410,4ptp4l9798-21users20:05:280
134491410,4ptp4l31569-21df_inode19:45:150
134491410,4ptp4l24782-21hddtemp_smartct19:30:150
134491410,4ptp4l24563-21df19:30:121
134491410,4ptp4l21709-21users22:50:280
134491410,4ptp4l0-21swapper/222:55:192
134491410,3ptp4l25120-21diskstats00:10:162
134491410,3ptp4l0-21swapper/200:35:082
134491410,10ptp4l0-21swapper/220:12:112
1512099406,9cyclictest25-21ksoftirqd/100:15:011
15120994034,3cyclictest25-21ksoftirqd/121:05:181
134491400,6ptp4l13607-21if_err_enp1s023:45:180
134491400,5ptp4l28133-21python21:55:270
134491400,5ptp4l20316-21ps20:30:200
134491400,5ptp4l20316-21ps20:30:200
134491400,5ptp4l0-21swapper/223:40:122
134491400,5ptp4l0-21swapper/122:10:151
134491400,5ptp4l0-21swapper/121:35:311
134491400,4ptp4l23660-21grep19:25:292
134491400,4ptp4l0-21swapper/222:10:312
134491400,4ptp4l0-21swapper/221:31:352
134491400,4ptp4l0-21swapper/220:15:282
134491400,4ptp4l0-21swapper/219:50:572
134491400,4ptp4l0-21swapper/219:38:372
134491400,4ptp4l0-21swapper/219:23:252
134491400,4ptp4l0-21swapper/200:00:222
134491400,4ptp4l0-21swapper/120:00:181
134491400,4ptp4l0-21swapper/119:55:201
134491400,4ptp4l0-21swapper/022:20:050
134491400,4ptp4l0-21swapper/000:11:010
134491400,3ptp4l28967-21apt-get19:40:121
134491400,3ptp4l26859-21apt-get00:15:032
134491400,3ptp4l25597-21ntpq21:50:192
134491400,3ptp4l21160-21ntp_states22:50:232
134491400,2ptp4l0-21swapper/220:00:472
15120993934,3cyclictest25-21ksoftirqd/100:25:291
15120993933,3cyclictest25-21ksoftirqd/121:45:271
134491390,5ptp4l0-21swapper/121:25:191
134491390,4ptp4l0-21swapper/319:08:133
134491390,4ptp4l0-21swapper/223:15:352
134491390,4ptp4l0-21swapper/221:02:092
134491390,4ptp4l0-21swapper/220:40:192
134491390,4ptp4l0-21swapper/220:25:292
134491390,4ptp4l0-21swapper/220:23:412
134491390,4ptp4l0-21swapper/219:45:112
134491390,4ptp4l0-21swapper/219:34:152
134491390,4ptp4l0-21swapper/219:14:452
134491390,4ptp4l0-21swapper/200:23:052
134491390,4ptp4l0-21swapper/023:50:490
134491390,4ptp4l0-21swapper/022:55:000
134491390,4ptp4l0-21swapper/022:45:210
134491390,4ptp4l0-21swapper/020:23:430
134491390,3ptp4l16015-21iostat22:40:180
134491390,3ptp4l0-21swapper/221:05:082
134491390,3ptp4l0-21swapper/123:15:191
134491380,4ptp4l0-21swapper/223:55:232
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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