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2026-05-26 - 13:01
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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 Tue May 26, 2026 00:45:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
831221450,5sleep11434199cyclictest21:15:141
284692770,3sleep128471-21grep21:55:301
284692770,3sleep128471-21grep21:55:301
134491740,2ptp4l9-21ksoftirqd/023:45:230
134491700,5ptp4l0-21swapper/220:20:112
1434399654,18cyclictest29011-21/usr/sbin/munin20:50:163
14340996530,4cyclictest9-21ksoftirqd/023:55:140
43072640,4sleep11434199cyclictest00:35:001
134491600,5ptp4l0-21swapper/119:05:231
134491600,4ptp4l31848-21apt-get23:15:132
1434399596,6cyclictest18590-21phc2sys-jitter21:35:233
1434399586,6cyclictest0-21swapper/300:10:213
134491580,4ptp4l0-21swapper/319:27:163
1434399577,6cyclictest0-21swapper/322:05:263
14343995730,9cyclictest41-21ksoftirqd/321:05:173
1434099570,6cyclictest990-21sed21:00:000
134491570,4ptp4l0-21swapper/200:36:552
134491570,3ptp4l0-21swapper/119:35:141
1434399567,6cyclictest4182-21tail19:55:243
1434399567,6cyclictest0-21swapper/323:53:583
134491560,4ptp4l0-21swapper/020:30:260
50822550,3sleep10-21swapper/121:05:271
1434399557,7cyclictest0-21swapper/323:57:393
1434399556,6cyclictest0-21swapper/322:40:253
1434099553,5cyclictest9-21ksoftirqd/020:20:170
1434399546,6cyclictest0-21swapper/320:55:163
1434399543,5cyclictest41-21ksoftirqd/319:40:173
1434099542,5cyclictest0-21swapper/023:30:130
1434099542,5cyclictest0-21swapper/023:30:120
1434099542,5cyclictest0-21swapper/000:10:220
134491540,4ptp4l0-21swapper/222:01:092
134491540,3ptp4l0-21swapper/123:00:481
134491540,3ptp4l0-21swapper/122:25:241
1434399537,5cyclictest22126-21cat21:45:133
1434399532,6cyclictest24208-21latency_hist20:40:003
1434399532,6cyclictest19379-21grep22:45:273
134491530,4ptp4l0-21swapper/122:57:041
134491530,4ptp4l0-21swapper/121:13:291
134491530,4ptp4l0-21swapper/119:11:391
1434399527,6cyclictest0-21swapper/319:50:243
1434399527,6cyclictest0-21swapper/300:20:373
1434099525,12cyclictest0-21swapper/022:30:250
1434099523,6cyclictest101ktimersoftd/019:20:000
1434099520,5cyclictest32572-21sshd19:47:110
134491520,4ptp4l0-21swapper/221:05:192
1434399511,10cyclictest25621-21proc_pri20:40:233
1434099512,7cyclictest0-21swapper/020:25:240
1434099511,5cyclictest0-21swapper/023:30:000
1434099510,6cyclictest0-21swapper/023:50:160
134491510,4ptp4l0-21swapper/123:38:381
134491510,4ptp4l0-21swapper/123:07:211
134491510,4ptp4l0-21swapper/123:07:211
134491510,4ptp4l0-21swapper/120:41:411
1434399508,7cyclictest0-21swapper/319:45:233
1434399508,6cyclictest0-21swapper/300:15:263
1434399507,6cyclictest0-21swapper/320:05:283
1434399507,6cyclictest0-21swapper/319:37:023
1434399501,6cyclictest19748-21/usr/sbin/munin20:30:153
1434299502,2cyclictest121rcu_preempt23:13:582
1434099504,5cyclictest26967-21strings19:35:210
1434099503,6cyclictest101ktimersoftd/022:00:010
1434099503,6cyclictest101ktimersoftd/022:00:010
1434099502,12cyclictest0-21swapper/021:35:250
1434099501,6cyclictest0-21swapper/021:00:160
1434099500,7cyclictest101ktimersoftd/020:00:250
1434099500,6cyclictest0-21swapper/020:15:170
1434099500,5cyclictest3352-21runrttasks19:55:140
134491500,4ptp4l0-21swapper/220:14:002
134491500,4ptp4l0-21swapper/122:00:441
1434399495,6cyclictest1301-21snmpd21:40:133
1434399492,6cyclictest0-21swapper/322:35:233
1434399492,6cyclictest0-21swapper/322:35:233
1434399490,7cyclictest41-21ksoftirqd/321:55:273
1434399490,7cyclictest41-21ksoftirqd/321:55:273
14342994930,17cyclictest33-21ksoftirqd/222:45:012
1434099492,7cyclictest0-21swapper/019:50:250
1434099492,6cyclictest0-21swapper/023:20:280
1434099492,6cyclictest0-21swapper/020:40:140
1434099492,5cyclictest0-21swapper/000:15:290
1434099491,9cyclictest9-21ksoftirqd/022:40:210
1434099491,5cyclictest9-21ksoftirqd/022:25:170
134491490,12ptp4l0-21swapper/120:10:301
1434399485,6cyclictest11316-21missed_timers20:10:223
1434399484,6cyclictest0-21swapper/322:30:173
1434399482,7cyclictest401ktimersoftd/300:05:193
1434399482,6cyclictest0-21swapper/322:20:583
1434399482,6cyclictest0-21swapper/321:15:213
1434399482,5cyclictest0-21swapper/322:15:193
1434399480,7cyclictest41-21ksoftirqd/321:30:243
1434299482,2cyclictest121rcu_preempt23:56:582
1434299482,2cyclictest121rcu_preempt23:07:592
1434299482,2cyclictest121rcu_preempt23:07:592
1434299482,2cyclictest121rcu_preempt22:11:592
1434299482,2cyclictest121rcu_preempt22:07:592
1434299482,2cyclictest121rcu_preempt21:51:592
1434299482,2cyclictest121rcu_preempt20:56:582
1434299481,2cyclictest121rcu_preempt23:42:582
1434099483,6cyclictest5189-21sed00:35:190
1434099482,6cyclictest0-21swapper/022:45:270
1434099482,5cyclictest0-21swapper/023:10:010
1434099482,5cyclictest0-21swapper/023:10:000
1434099481,5cyclictest9-21ksoftirqd/021:31:580
1434099481,5cyclictest9-21ksoftirqd/020:35:250
1434099481,5cyclictest0-21swapper/019:40:240
1434099481,4cyclictest0-21swapper/023:00:160
1434099480,5cyclictest0-21swapper/000:00:160
1434099480,13cyclictest9-21ksoftirqd/019:10:250
134491480,4ptp4l0-21swapper/122:41:131
134491480,4ptp4l0-21swapper/119:32:311
134491480,4ptp4l0-21swapper/022:05:050
1434399478,11cyclictest0-21swapper/323:20:213
1434399477,6cyclictest0-21swapper/319:33:053
1434399476,7cyclictest0-21swapper/322:25:183
1434399476,6cyclictest0-21swapper/322:50:223
1434399472,5cyclictest0-21swapper/321:00:213
14342994742,3cyclictest33-21ksoftirqd/220:20:002
1434299472,2cyclictest121rcu_preempt23:03:592
1434299472,2cyclictest121rcu_preempt21:45:592
1434299471,2cyclictest121rcu_preempt20:46:582
1434299471,2cyclictest121rcu_preempt00:04:582
1434299470,2cyclictest121rcu_preempt00:08:582
1434099473,11cyclictest0-21swapper/021:40:120
14340994729,5cyclictest9-21ksoftirqd/022:15:160
1434099472,6cyclictest0-21swapper/019:20:130
1434099471,6cyclictest9-21ksoftirqd/020:50:280
1434099471,5cyclictest9-21ksoftirqd/000:30:580
1434099470,6cyclictest111rcuc/022:55:180
1434099470,6cyclictest0-21swapper/022:00:150
1434099470,5cyclictest9-21ksoftirqd/000:25:280
134491470,3ptp4l0-21swapper/220:35:152
134491470,17ptp4l0-21swapper/220:34:362
1434399465,8cyclictest0-21swapper/320:15:183
1434399465,5cyclictest8466-21latency_hist23:35:003
1434399465,5cyclictest8466-21latency_hist23:35:003
1434399463,7cyclictest18053-21switchtime19:15:263
1434399463,11cyclictest5426-21cat20:00:143
1434399463,11cyclictest1719-21awk00:30:003
1434299462,2cyclictest121rcu_preempt20:09:582
1434299461,2cyclictest121rcu_preempt22:47:582
1434299461,2cyclictest121rcu_preempt22:19:592
1434299461,2cyclictest121rcu_preempt21:14:592
1434299460,2cyclictest121rcu_preempt21:18:582
1434099465,4cyclictest25896-21latency_hist19:35:010
1434099464,7cyclictest0-21swapper/020:13:590
1434099463,6cyclictest9-21ksoftirqd/021:50:240
1434099463,5cyclictest9-21ksoftirqd/022:50:140
1434099462,6cyclictest0-21swapper/021:15:260
1434099462,4cyclictest0-21swapper/021:25:000
1434099462,10cyclictest0-21swapper/020:05:130
1434099461,6cyclictest9-21ksoftirqd/023:40:130
1434099461,5cyclictest0-21swapper/023:35:240
1434099460,6cyclictest22542-21if_err_enp1s021:45:180
1434099460,5cyclictest21269-21/usr/sbin/munin19:25:250
1434099460,5cyclictest101ktimersoftd/023:10:160
134491460,4ptp4l0-21swapper/120:25:361
134491460,3ptp4l0-21swapper/220:00:472
134491460,3ptp4l0-21swapper/200:34:112
134491460,10ptp4l0-21swapper/120:37:471
14342994539,3cyclictest33-21ksoftirqd/200:25:002
1434299451,2cyclictest121rcu_preempt21:00:582
1434299450,2cyclictest121rcu_preempt22:33:592
1434299450,2cyclictest121rcu_preempt19:52:582
1434099453,4cyclictest0-21swapper/022:35:130
1434099453,4cyclictest0-21swapper/022:35:130
14340994519,7cyclictest9-21ksoftirqd/022:20:590
1434399446,6cyclictest0-21swapper/300:35:163
1434399444,7cyclictest0-21swapper/323:25:223
1434399442,5cyclictest0-21swapper/321:10:133
14342994439,3cyclictest33-21ksoftirqd/221:35:012
1434299442,2cyclictest121rcu_preempt00:14:582
14341994438,3cyclictest25-21ksoftirqd/122:19:591
1434099444,7cyclictest9-21ksoftirqd/020:45:480
1434099443,5cyclictest9-21ksoftirqd/023:18:250
134491440,9ptp4l30574-21latency_hist19:45:001
134491440,4ptp4l0-21swapper/222:38:172
134491440,4ptp4l0-21swapper/222:38:172
134491440,4ptp4l0-21swapper/121:46:541
134491440,10ptp4l0-21swapper/219:49:092
1434399437,6cyclictest0-21swapper/323:44:553
1434399434,6cyclictest0-21swapper/321:20:173
1434399434,6cyclictest0-21swapper/320:25:303
1434399433,10cyclictest0-21swapper/323:06:103
1434399433,10cyclictest0-21swapper/323:06:103
1434399432,7cyclictest0-21swapper/321:50:153
1434399430,5cyclictest0-21swapper/323:45:193
14341994337,3cyclictest25-21ksoftirqd/100:20:011
14340994340,2cyclictest101ktimersoftd/000:05:280
1434099431,5cyclictest0-21swapper/000:20:250
134491430,9ptp4l0-21swapper/120:49:311
134491430,9ptp4l0-21swapper/119:59:351
134491430,4ptp4l20284-21df22:50:131
134491430,2ptp4l0-21swapper/220:50:262
134491430,10ptp4l0-21swapper/121:41:471
1434399426,6cyclictest0-21swapper/323:14:463
1434399420,8cyclictest41-21ksoftirqd/323:36:023
1434399420,5cyclictest0-21swapper/323:00:133
1434399420,4cyclictest0-21swapper/322:10:593
14342994236,3cyclictest33-21ksoftirqd/222:55:132
14342994235,4cyclictest27452-21irqrtprio21:55:202
14342994235,4cyclictest27452-21irqrtprio21:55:202
14342994234,6cyclictest33-21ksoftirqd/222:20:222
1434099423,3cyclictest9-21ksoftirqd/022:10:270
1434099423,11cyclictest0-21swapper/021:10:240
134491420,4ptp4l1768-21apt-get23:20:121
134491420,4ptp4l15174-21apt-get20:20:133
134491420,4ptp4l11457-21meminfo21:20:201
134491420,3ptp4l13506-21ls19:05:260
134491420,3ptp4l0-21swapper/221:37:462
1434399414,6cyclictest0-21swapper/320:45:193
1434399414,1cyclictest0-21swapper/300:03:403
14343994123,6cyclictest41-21ksoftirqd/322:00:283
1434299416,4cyclictest33-21ksoftirqd/219:40:012
14342994137,2cyclictest33-21ksoftirqd/223:24:592
14342994137,2cyclictest33-21ksoftirqd/200:28:272
14342994136,3cyclictest33-21ksoftirqd/222:30:012
14342994136,3cyclictest33-21ksoftirqd/220:40:172
14342994136,3cyclictest33-21ksoftirqd/219:30:182
14341994136,3cyclictest25-21ksoftirqd/122:24:591
14340994118,6cyclictest9-21ksoftirqd/021:25:270
1434099410,6cyclictest101ktimersoftd/021:05:210
134491410,9ptp4l0-21swapper/220:26:222
134491410,9ptp4l0-21swapper/120:07:141
134491410,5ptp4l25696-21iostat_ios00:10:161
134491410,5ptp4l0-21swapper/119:50:151
134491410,4ptp4l17783-21ntp_states19:15:231
134491410,4ptp4l0-21swapper/219:19:472
134491410,3ptp4l20737-21ls21:40:212
134491410,3ptp4l18984-21apt-get19:20:111
1434399402,6cyclictest0-21swapper/319:10:153
1434399400,5cyclictest41-21ksoftirqd/322:58:293
14342994036,2cyclictest33-21ksoftirqd/223:40:002
14342994035,3cyclictest33-21ksoftirqd/221:24:402
14342994035,3cyclictest33-21ksoftirqd/219:40:182
14342994035,3cyclictest33-21ksoftirqd/219:25:002
14342994035,3cyclictest33-21ksoftirqd/219:12:042
1434199404,3cyclictest25-21ksoftirqd/100:25:001
14341994035,2cyclictest25-21ksoftirqd/122:35:001
134491400,5ptp4l0-21swapper/323:15:243
134491400,5ptp4l0-21swapper/122:35:191
134491400,5ptp4l0-21swapper/122:35:191
134491400,4ptp4l29986-21hddtemp_smartct23:10:191
134491400,4ptp4l15924-21df_inode23:50:141
134491400,4ptp4l0-21swapper/219:55:092
134491400,4ptp4l0-21swapper/123:45:301
134491400,4ptp4l0-21swapper/122:10:581
134491400,4ptp4l0-21swapper/120:33:231
134491400,3ptp4l4333-21df23:25:141
1434399392,6cyclictest0-21swapper/300:30:243
14342993934,3cyclictest33-21ksoftirqd/221:25:272
14341993934,3cyclictest25-21ksoftirqd/123:30:171
14341993934,3cyclictest25-21ksoftirqd/123:30:171
14341993934,3cyclictest25-21ksoftirqd/121:05:001
1434199390,3cyclictest121rcu_preempt21:00:001
134491390,4ptp4l32605-21iostat00:25:191
134491390,4ptp4l21397-21ntp_states00:00:251
134491390,4ptp4l11026-21apt-get23:40:111
134491390,4ptp4l0-21swapper/321:25:223
134491390,4ptp4l0-21swapper/219:26:502
134491390,4ptp4l0-21swapper/122:47:581
134491390,4ptp4l0-21swapper/121:50:011
134491390,4ptp4l0-21swapper/120:16:591
134491390,4ptp4l0-21swapper/120:04:081
134491390,4ptp4l0-21swapper/100:36:571
134491390,3ptp4l27412-21/usr/sbin/munin00:15:292
134491390,3ptp4l14485-21users21:25:291
14342993833,3cyclictest33-21ksoftirqd/223:50:192
14342993833,3cyclictest33-21ksoftirqd/223:48:122
14342993832,3cyclictest33-21ksoftirqd/223:25:192
134491380,4ptp4l0-21swapper/123:55:131
134491380,4ptp4l0-21swapper/123:17:581
134491380,4ptp4l0-21swapper/122:05:101
134491380,4ptp4l0-21swapper/120:51:291
134491380,4ptp4l0-21swapper/120:24:301
134491380,4ptp4l0-21swapper/119:25:191
134491380,4ptp4l0-21swapper/100:05:221
134491380,3ptp4l32419-21users19:45:271
134491380,3ptp4l0-21swapper/222:50:242
14342993731,3cyclictest33-21ksoftirqd/223:34:402
14342993731,3cyclictest33-21ksoftirqd/223:34:402
134491370,3ptp4l41-21ksoftirqd/319:05:243
134491370,3ptp4l0-21swapper/121:32:181
134491360,4ptp4l0-21swapper/319:22:563
134491360,4ptp4l0-21swapper/121:36:031
119932202,11sleep211994-21/usr/sbin/munin19:05:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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