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2026-03-14 - 13:51
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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 Sat Mar 14, 2026 00:45:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1344911460,15ptp4l0-21swapper/323:37:423
9012710,5sleep0111rcuc/021:10:150
9436996831,7cyclictest41-21ksoftirqd/300:35:243
9436996630,6cyclictest41-21ksoftirqd/321:20:153
134491650,21ptp4l18169-21ntp_states00:05:222
943699642,30cyclictest0-21swapper/300:04:243
221792640,7sleep3943699cyclictest23:05:153
134491640,5ptp4l0-21swapper/019:55:220
134491630,18ptp4l10142-21apt-get23:50:122
134491630,18ptp4l10142-21apt-get23:50:112
303472620,4sleep230343-21awk22:14:592
134491620,4ptp4l0-21swapper/221:28:362
134491600,4ptp4l0-21swapper/320:25:133
9436995920,7cyclictest41-21ksoftirqd/323:46:313
134491590,4ptp4l0-21swapper/020:25:160
943699581,12cyclictest0-21swapper/323:30:223
134491580,3ptp4l0-21swapper/220:40:462
134491580,3ptp4l0-21swapper/122:38:361
134491580,3ptp4l0-21swapper/120:29:581
134491580,3ptp4l0-21swapper/119:10:231
134491570,3ptp4l410-21fschecks_count20:00:131
943699564,8cyclictest41-21ksoftirqd/320:40:143
943699563,6cyclictest41-21ksoftirqd/322:35:163
9436995624,7cyclictest41-21ksoftirqd/321:33:563
943699562,11cyclictest0-21swapper/321:14:593
134491560,4ptp4l0-21swapper/119:37:041
134491560,3ptp4l0-21swapper/122:00:001
134491560,3ptp4l0-21swapper/120:36:281
134491560,3ptp4l0-21swapper/021:00:210
134491550,3ptp4l0-21swapper/223:34:572
134491550,3ptp4l0-21swapper/020:15:230
943699544,6cyclictest0-21swapper/319:25:153
943699543,6cyclictest41-21ksoftirqd/323:55:133
134491540,4ptp4l0-21swapper/222:20:362
134491540,4ptp4l0-21swapper/023:31:070
134491540,4ptp4l0-21swapper/019:16:390
134491540,3ptp4l5677-21cat20:10:190
943699533,7cyclictest0-21swapper/323:14:283
943699532,6cyclictest0-21swapper/300:15:223
943699531,7cyclictest12219-21ls19:15:163
943399537,3cyclictest9-21ksoftirqd/023:10:360
134491530,4ptp4l0-21swapper/000:07:500
134491530,3ptp4l0-21swapper/019:50:130
943699523,6cyclictest41-21ksoftirqd/300:20:243
943699523,5cyclictest401ktimersoftd/320:45:263
943699522,7cyclictest0-21swapper/322:20:243
943699522,5cyclictest41-21ksoftirqd/319:55:273
943699521,7cyclictest41-21ksoftirqd/321:00:153
943699521,6cyclictest0-21swapper/320:00:243
134491520,4ptp4l0-21swapper/119:15:401
134491520,4ptp4l0-21swapper/022:34:290
134491520,4ptp4l0-21swapper/019:25:000
134491520,3ptp4l0-21swapper/220:16:182
134491520,10ptp4l8766-21users19:05:251
943699515,7cyclictest41-21ksoftirqd/322:15:273
943699515,7cyclictest41-21ksoftirqd/322:15:273
943699512,6cyclictest0-21swapper/320:10:123
943699512,4cyclictest0-21swapper/300:25:123
943699512,11cyclictest0-21swapper/319:35:163
943699511,6cyclictest0-21swapper/321:19:023
943699511,5cyclictest41-21ksoftirqd/322:40:033
943699511,5cyclictest0-21swapper/300:10:163
134491510,4ptp4l0-21swapper/223:14:402
134491510,4ptp4l0-21swapper/221:32:182
134491510,4ptp4l0-21swapper/100:22:331
134491510,4ptp4l0-21swapper/023:05:430
134491510,3ptp4l0-21swapper/200:10:252
943699505,4cyclictest41-21ksoftirqd/322:00:263
943699504,6cyclictest41-21ksoftirqd/321:25:183
943699503,6cyclictest41-21ksoftirqd/322:25:153
943699503,5cyclictest41-21ksoftirqd/322:30:153
943699502,7cyclictest0-21swapper/300:05:113
943699502,6cyclictest41-21ksoftirqd/323:25:213
943699502,6cyclictest0-21swapper/321:45:593
943699502,6cyclictest0-21swapper/319:24:023
943699502,11cyclictest0-21swapper/321:55:233
943699500,6cyclictest41-21ksoftirqd/319:30:173
943699500,6cyclictest0-21swapper/321:50:263
134491500,4ptp4l0-21swapper/222:39:302
134491500,4ptp4l0-21swapper/221:46:152
134491500,4ptp4l0-21swapper/219:21:552
134491500,4ptp4l0-21swapper/123:42:221
134491500,4ptp4l0-21swapper/100:18:001
134491500,4ptp4l0-21swapper/020:42:150
134491500,4ptp4l0-21swapper/020:35:460
134491500,4ptp4l0-21swapper/020:22:500
134491500,4ptp4l0-21swapper/000:04:370
134491500,3ptp4l0-21swapper/220:20:122
134491500,3ptp4l0-21swapper/123:19:251
134491500,3ptp4l0-21swapper/122:15:231
134491500,3ptp4l0-21swapper/122:15:231
134491500,3ptp4l0-21swapper/021:39:570
943699495,8cyclictest41-21ksoftirqd/300:30:253
943699495,7cyclictest41-21ksoftirqd/321:35:283
943699494,8cyclictest41-21ksoftirqd/322:55:263
943699493,5cyclictest41-21ksoftirqd/319:40:183
943699492,7cyclictest41-21ksoftirqd/319:50:153
943699492,6cyclictest0-21swapper/320:09:233
943699492,5cyclictest0-21swapper/322:09:383
134491490,4ptp4l943399cyclictest20:52:320
134491490,4ptp4l0-21swapper/122:33:341
134491490,4ptp4l0-21swapper/000:25:300
134491490,3ptp4l0-21swapper/120:40:521
943699485,7cyclictest41-21ksoftirqd/321:40:193
943699485,7cyclictest41-21ksoftirqd/319:10:143
943699484,8cyclictest41-21ksoftirqd/322:50:193
943699484,7cyclictest41-21ksoftirqd/320:55:013
943699484,7cyclictest41-21ksoftirqd/320:35:243
943699484,7cyclictest41-21ksoftirqd/320:30:163
943699484,6cyclictest41-21ksoftirqd/322:10:143
943699483,9cyclictest41-21ksoftirqd/320:25:003
943699482,7cyclictest0-21swapper/323:24:523
943699482,6cyclictest0-21swapper/323:52:053
943699482,6cyclictest0-21swapper/323:52:043
943699481,6cyclictest0-21swapper/320:15:133
943699481,11cyclictest0-21swapper/323:00:133
943699480,6cyclictest41-21ksoftirqd/321:05:163
943399485,5cyclictest9-21ksoftirqd/022:51:420
134491480,4ptp4l0-21swapper/122:06:201
134491480,4ptp4l0-21swapper/022:28:060
134491480,4ptp4l0-21swapper/021:18:150
134491480,4ptp4l0-21swapper/020:02:010
134491480,3ptp4l943399cyclictest00:24:130
9436994719,7cyclictest41-21ksoftirqd/320:55:143
134491470,4ptp4l19664-21ls19:30:182
134491470,4ptp4l0-21swapper/222:57:072
134491470,4ptp4l0-21swapper/023:04:300
134491470,4ptp4l0-21swapper/020:47:270
134491470,3ptp4l0-21swapper/120:57:441
134491470,15ptp4l0-21swapper/022:10:210
943699463,7cyclictest41-21ksoftirqd/322:50:003
943699461,6cyclictest0-21swapper/319:46:403
134491460,4ptp4l30606-21apt-get21:05:102
134491460,4ptp4l0-21swapper/021:30:590
134491460,4ptp4l0-21swapper/020:07:510
134491460,4ptp4l0-21swapper/019:30:230
134491460,4ptp4l0-21swapper/000:30:140
134491460,3ptp4l943399cyclictest22:20:410
134491460,3ptp4l0-21swapper/222:16:452
134491460,3ptp4l0-21swapper/222:16:452
134491460,3ptp4l0-21swapper/119:25:011
134491460,3ptp4l0-21swapper/022:58:310
943399458,3cyclictest9-21ksoftirqd/023:59:190
134491450,9ptp4l0-21swapper/220:26:082
134491450,3ptp4l0-21swapper/120:15:051
134491450,3ptp4l0-21swapper/100:10:031
134491440,9ptp4l0-21swapper/222:00:042
134491440,9ptp4l0-21swapper/219:37:252
134491440,4ptp4l30974-21apt-get23:25:122
134491440,3ptp4l0-21swapper/221:24:392
134491440,3ptp4l0-21swapper/123:52:551
134491440,3ptp4l0-21swapper/123:52:551
134491440,3ptp4l0-21swapper/122:14:131
134491440,3ptp4l0-21swapper/121:11:391
134491440,3ptp4l0-21swapper/119:53:261
134491440,3ptp4l0-21swapper/000:16:070
134491440,11ptp4l25-21ksoftirqd/100:00:251
943699433,6cyclictest0-21swapper/323:19:293
134691430,12getstats28192-21df_abs19:50:152
134491430,9ptp4l0-21swapper/223:23:192
134491430,9ptp4l0-21swapper/220:38:192
134491430,9ptp4l0-21swapper/200:17:202
134491430,6ptp4l12832-21/usr/sbin/munin22:45:172
134491430,4ptp4l30910-21df_inode21:05:120
134491430,4ptp4l24607-21meminfo22:00:190
134491430,4ptp4l23911-21iostat_ios19:40:180
134491430,4ptp4l19615-21iostat_ios21:50:180
134491430,3ptp4l3038-21apt-get22:25:122
9433994237,3cyclictest9-21ksoftirqd/019:40:000
134491420,9ptp4l0-21swapper/221:42:192
134491420,5ptp4l0-21swapper/323:40:233
134491420,4ptp4l3792-21iostat_ios23:35:182
134491420,4ptp4l20559-21memory00:10:200
134491420,4ptp4l17097-21apt-get22:55:111
134491420,4ptp4l14861-21perl20:30:150
134491420,4ptp4l14801-21apt-get22:50:121
134491420,4ptp4l14698-21df_inode21:40:140
134491420,4ptp4l14285-21df19:20:111
134491420,4ptp4l11048-21irqstats22:40:180
134491420,4ptp4l0-21swapper/200:33:122
134491420,4ptp4l0-21swapper/200:00:372
134491420,4ptp4l0-21swapper/023:40:150
134491420,4ptp4l0-21swapper/023:26:560
134491420,4ptp4l0-21swapper/019:45:140
134491420,3ptp4l21769-21apt-get23:05:122
134491420,3ptp4l0-21swapper/120:31:331
134491420,1ptp4l0-21swapper/223:46:432
9433994136,3cyclictest14498-21kworker/0:023:38:200
134491410,5ptp4l943599cyclictest20:30:172
134491410,5ptp4l24799-21iostat_ios00:20:202
134491410,5ptp4l0-21swapper/223:40:112
134491410,5ptp4l0-21swapper/023:50:180
134491410,5ptp4l0-21swapper/023:50:170
134491410,5ptp4l0-21swapper/021:20:220
134491410,5ptp4l0-21swapper/019:05:590
134491410,4ptp4l32275-21users21:05:251
134491410,4ptp4l31763-21/usr/sbin/munin00:35:151
134491410,4ptp4l3073-21df21:15:121
134491410,4ptp4l27470-21ntp_states23:15:212
134491410,4ptp4l13174-21ntpq21:35:222
134491410,4ptp4l10511-21df_inode22:40:142
134491410,4ptp4l0-21swapper/223:55:122
134491410,4ptp4l0-21swapper/221:56:372
134491410,4ptp4l0-21swapper/221:03:382
134491410,4ptp4l0-21swapper/219:55:162
134491410,4ptp4l0-21swapper/121:26:421
134491410,4ptp4l0-21swapper/022:19:190
134491410,4ptp4l0-21swapper/022:19:190
134491410,3ptp4l2932-21hddtemp_smartct20:05:151
134491410,3ptp4l28676-21apt-get23:20:101
134491410,3ptp4l18671-21apt-get19:30:111
134491410,3ptp4l0-21swapper/121:45:001
134491400,5ptp4l0-21swapper/119:41:191
134491400,4ptp4l5315-21/usr/sbin/munin22:30:122
134491400,4ptp4l4157-21ntp_states22:25:231
134491400,4ptp4l31901-21users19:55:301
134491400,4ptp4l15752-21meminfo22:50:192
134491400,4ptp4l1358-21if_enp4s023:30:161
134491400,4ptp4l12717-21df22:45:161
134491400,4ptp4l11517-21users20:20:271
134491400,4ptp4l0-21swapper/222:07:332
134491400,4ptp4l0-21swapper/221:17:522
134491400,4ptp4l0-21swapper/220:55:202
134491400,4ptp4l0-21swapper/220:50:182
134491400,4ptp4l0-21swapper/220:47:552
134491400,4ptp4l0-21swapper/220:10:532
134491400,4ptp4l0-21swapper/219:27:152
134491400,4ptp4l0-21swapper/200:35:202
134491400,4ptp4l0-21swapper/200:25:152
134491400,4ptp4l0-21swapper/121:50:111
134491400,4ptp4l0-21swapper/121:35:261
134491400,4ptp4l0-21swapper/023:20:070
134491400,4ptp4l0-21swapper/023:17:080
134491400,4ptp4l0-21swapper/022:45:250
134491400,4ptp4l0-21swapper/022:36:160
134491400,4ptp4l0-21swapper/022:05:170
134491400,4ptp4l0-21swapper/021:55:220
134491400,4ptp4l0-21swapper/021:45:080
134491400,4ptp4l0-21swapper/021:29:360
134491400,3ptp4l8146-21diskstats23:45:140
134491400,3ptp4l26564-21iostat_ios20:55:180
134491400,3ptp4l23960-21df_inode22:00:141
134491400,3ptp4l1584-21ntp_states22:20:221
134491400,3ptp4l0-21swapper/220:05:522
134491400,3ptp4l0-21swapper/121:04:271
134491400,3ptp4l0-21swapper/120:50:241
9434993934,3cyclictest25-21ksoftirqd/123:45:181
9434993934,3cyclictest25-21ksoftirqd/119:50:001
9434993933,3cyclictest25-21ksoftirqd/123:05:191
134491390,4ptp4l0-21swapper/223:00:262
134491390,4ptp4l0-21swapper/221:50:202
134491390,4ptp4l0-21swapper/221:14:552
134491390,4ptp4l0-21swapper/219:48:572
134491390,4ptp4l0-21swapper/219:18:052
134491390,4ptp4l0-21swapper/219:10:162
134491390,4ptp4l0-21swapper/123:38:161
134491390,4ptp4l0-21swapper/123:28:041
134491390,4ptp4l0-21swapper/123:00:561
134491390,4ptp4l0-21swapper/122:40:211
134491390,4ptp4l0-21swapper/121:30:121
134491390,4ptp4l0-21swapper/120:46:191
134491390,4ptp4l0-21swapper/100:30:211
134491390,4ptp4l0-21swapper/100:06:191
134491390,4ptp4l0-21swapper/019:13:580
134491390,4ptp4l0-21swapper/000:35:190
134491390,3ptp4l0-21swapper/220:01:062
134491390,3ptp4l0-21swapper/123:58:011
134491390,3ptp4l0-21swapper/120:11:551
134491390,3ptp4l0-21swapper/019:20:170
134491380,4ptp4l0-21swapper/219:40:102
134491380,4ptp4l0-21swapper/123:11:431
134491380,3ptp4l0-21swapper/121:45:171
134491380,3ptp4l0-21swapper/100:27:131
134491370,4ptp4l0-21swapper/121:23:161
46198320,26rtkit-daemon1456-21mactelnetd19:07:543
79972113,4sleep20-21swapper/219:05:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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