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2026-05-06 - 09:00
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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 Wed May 06, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
276199670,11cyclictest16397-21cat19:40:002
276199617,7cyclictest0-21swapper/223:10:272
276199608,6cyclictest0-21swapper/220:40:162
276199598,7cyclictest0-21swapper/219:30:262
276199598,7cyclictest0-21swapper/219:30:262
276199597,7cyclictest0-21swapper/200:15:292
276199597,6cyclictest0-21swapper/223:05:212
276199596,7cyclictest0-21swapper/200:35:252
134491590,5ptp4l0-21swapper/219:40:012
134491590,4ptp4l31798-21ntp_states20:10:232
134491590,4ptp4l0-21swapper/222:59:172
24122580,3sleep2276199cyclictest22:35:272
134491580,4ptp4l0-21swapper/123:32:251
276199578,6cyclictest0-21swapper/220:45:282
276199571,11cyclictest10007-21grep20:35:142
134491570,4ptp4l0-21swapper/322:03:583
134491570,4ptp4l0-21swapper/220:24:312
134491570,4ptp4l0-21swapper/122:55:101
134491570,3ptp4l0-21swapper/321:55:223
134491570,3ptp4l0-21swapper/020:16:470
276199567,7cyclictest0-21swapper/219:54:482
276199567,6cyclictest0-21swapper/222:20:272
276199567,6cyclictest0-21swapper/222:20:272
276199566,7cyclictest15093-21grep00:10:272
276199564,7cyclictest23085-21uniq00:30:152
134491560,4ptp4l0-21swapper/323:39:563
134491560,4ptp4l0-21swapper/023:30:160
276199557,6cyclictest0-21swapper/221:20:172
276199557,11cyclictest0-21swapper/220:05:292
276199556,6cyclictest0-21swapper/200:25:162
134491550,4ptp4l0-21swapper/120:45:181
134491550,3ptp4l0-21swapper/100:20:261
276199547,6cyclictest0-21swapper/222:50:182
276199547,6cyclictest0-21swapper/222:50:182
276199544,6cyclictest0-21swapper/222:25:142
134491540,4ptp4l0-21swapper/322:45:023
134491540,4ptp4l0-21swapper/121:41:381
134491540,3ptp4l0-21swapper/123:53:011
134491540,3ptp4l0-21swapper/021:01:330
276199534,7cyclictest5244-21cut19:15:142
276199534,6cyclictest0-21swapper/200:00:202
276199534,6cyclictest0-21swapper/200:00:202
276199533,6cyclictest3212-21latency_hist21:30:002
276199532,38cyclictest0-21swapper/223:50:142
134491530,4ptp4l0-21swapper/322:20:503
134491530,4ptp4l0-21swapper/322:20:503
134491530,4ptp4l0-21swapper/319:35:003
134491530,4ptp4l0-21swapper/319:35:003
134491530,3ptp4l0-21swapper/100:10:181
134491530,3ptp4l0-21swapper/021:32:580
276199525,6cyclictest7221-21cat22:45:272
134491520,4ptp4l0-21swapper/319:13:153
134491520,4ptp4l0-21swapper/123:59:451
134491520,4ptp4l0-21swapper/122:47:281
134491520,3ptp4l0-21swapper/120:10:191
276199517,6cyclictest0-21swapper/221:37:142
276199513,6cyclictest8028-21cut19:20:182
276199512,6cyclictest0-21swapper/223:29:592
276099518,4cyclictest25-21ksoftirqd/100:03:501
276099518,4cyclictest25-21ksoftirqd/100:03:501
134491510,4ptp4l0-21swapper/020:36:130
276199506,7cyclictest13332-21ls00:10:012
276199500,10cyclictest24717-21cut21:05:202
134491500,4ptp4l0-21swapper/100:33:221
134491500,4ptp4l0-21swapper/019:28:370
134491500,11ptp4l0-21swapper/122:29:481
276199498,7cyclictest0-21swapper/221:10:232
276199497,7cyclictest0-21swapper/220:00:222
276199492,6cyclictest3792-21basename21:30:142
276199492,10cyclictest30051-21mailstats21:15:262
276099499,8cyclictest25-21ksoftirqd/121:19:141
134491490,8ptp4l1195-21irqstats19:05:250
134491490,5ptp4l0-21swapper/121:35:271
134491490,4ptp4l0-21swapper/323:24:103
134491490,4ptp4l0-21swapper/221:44:132
134491490,4ptp4l0-21swapper/121:55:421
134491490,4ptp4l0-21swapper/023:35:160
134491490,3ptp4l0-21swapper/119:40:441
276199485,6cyclictest0-21swapper/221:52:272
276199484,6cyclictest0-21swapper/220:55:092
134491480,4ptp4l0-21swapper/321:34:173
134491480,4ptp4l0-21swapper/123:14:321
134491480,4ptp4l0-21swapper/121:51:531
134491480,4ptp4l0-21swapper/121:32:291
134491480,4ptp4l0-21swapper/100:16:021
134491480,4ptp4l0-21swapper/023:06:320
134491480,10ptp4l0-21swapper/021:05:190
276199475,6cyclictest0-21swapper/223:45:192
276199470,6cyclictest33-21ksoftirqd/223:00:252
134491470,7ptp4l1305-21meminfo19:05:261
134491470,4ptp4l0-21swapper/323:31:043
134491470,4ptp4l0-21swapper/123:27:511
134491470,4ptp4l0-21swapper/022:00:560
134491470,10ptp4l0-21swapper/021:40:170
276199467,7cyclictest0-21swapper/200:23:472
276199467,5cyclictest0-21swapper/223:35:522
276199466,6cyclictest0-21swapper/219:14:282
2760994614,7cyclictest25-21ksoftirqd/122:40:251
134491460,4ptp4l0-21swapper/319:23:433
134491460,4ptp4l0-21swapper/123:46:011
134491460,4ptp4l0-21swapper/123:02:431
134491460,3ptp4l0-21swapper/319:29:313
134491460,3ptp4l0-21swapper/100:07:441
134491460,3ptp4l0-21swapper/020:08:260
2762994530,4cyclictest41-21ksoftirqd/320:10:253
276199457,6cyclictest0-21swapper/223:30:302
276199452,6cyclictest0-21swapper/222:00:182
276199452,6cyclictest0-21swapper/221:45:232
276199450,8cyclictest23882-21mailstats23:20:232
2760994529,4cyclictest25-21ksoftirqd/120:36:131
134491450,4ptp4l536-21apt-get20:15:103
134491450,4ptp4l0-21swapper/122:06:041
134491450,3ptp4l0-21swapper/323:25:113
276199446,9cyclictest0-21swapper/223:40:222
276199445,6cyclictest0-21swapper/222:05:222
275999441,2cyclictest121rcu_preempt00:00:270
275999441,2cyclictest121rcu_preempt00:00:260
134491440,9ptp4l0-21swapper/019:44:250
134491440,5ptp4l0-21swapper/321:35:293
134491440,10ptp4l0-21swapper/019:39:050
276199435,5cyclictest0-21swapper/219:25:242
276199435,10cyclictest0-21swapper/222:10:282
276099436,2cyclictest25-21ksoftirqd/120:20:261
2760994339,2cyclictest25-21ksoftirqd/121:00:011
276099432,7cyclictest25-21ksoftirqd/122:20:191
276099432,7cyclictest25-21ksoftirqd/122:20:191
2760994322,3cyclictest25-21ksoftirqd/121:10:011
2759994338,3cyclictest9-21ksoftirqd/023:20:000
2759994318,3cyclictest134491ptp4l22:07:300
134491430,9ptp4l0-21swapper/220:18:292
134491430,5ptp4l0-21swapper/323:05:223
134491430,3ptp4l0-21swapper/322:56:583
134491430,3ptp4l0-21swapper/122:33:351
134491430,3ptp4l0-21swapper/023:56:010
134491430,3ptp4l0-21swapper/020:50:160
2762994238,3cyclictest41-21ksoftirqd/300:19:593
2762994236,3cyclictest41-21ksoftirqd/300:35:013
2762994230,10cyclictest41-21ksoftirqd/321:20:003
276099421,9cyclictest25-21ksoftirqd/123:15:241
275999429,3cyclictest9-21ksoftirqd/022:50:000
2759994238,2cyclictest9-21ksoftirqd/000:40:000
2759994236,3cyclictest9-21ksoftirqd/023:25:000
2759994236,3cyclictest9-21ksoftirqd/020:35:000
134491420,9ptp4l0-21swapper/023:49:560
134491420,7ptp4l0-21swapper/123:35:171
134491420,5ptp4l0-21swapper/320:50:233
134491420,5ptp4l0-21swapper/019:15:130
134491420,4ptp4l21420-21apt-get19:50:121
134491420,4ptp4l18102-21iostat23:10:180
134491420,4ptp4l15132-21diskstats21:55:152
134491420,4ptp4l10161-21diskstats20:35:153
134491420,3ptp4l0-21swapper/023:26:580
2762994137,2cyclictest41-21ksoftirqd/321:00:013
2762994136,3cyclictest41-21ksoftirqd/319:45:003
276199412,25cyclictest0-21swapper/219:47:412
276099415,4cyclictest25-21ksoftirqd/119:10:141
2760994137,2cyclictest25-21ksoftirqd/119:35:001
2760994137,2cyclictest25-21ksoftirqd/119:35:001
2760994134,4cyclictest25-21ksoftirqd/122:19:111
2759994136,3cyclictest9-21ksoftirqd/020:00:000
134491410,8ptp4l9-21ksoftirqd/000:11:380
134491410,5ptp4l7424-21latency_hist20:30:013
134491410,5ptp4l0-21swapper/222:30:112
134491410,5ptp4l0-21swapper/122:10:281
134491410,5ptp4l0-21swapper/022:55:040
134491410,4ptp4l3916-21meminfo20:20:200
134491410,4ptp4l29508-21ntp_states20:05:231
134491410,4ptp4l11350-21ntp_states21:45:243
134491410,4ptp4l0-21swapper/323:47:273
134491410,4ptp4l0-21swapper/321:50:513
134491410,4ptp4l0-21swapper/321:41:433
134491410,4ptp4l0-21swapper/119:20:231
134491410,4ptp4l0-21swapper/021:10:290
134491410,4ptp4l0-21swapper/020:10:350
134491410,4ptp4l0-21swapper/019:53:190
134491410,4ptp4l0-21swapper/019:45:100
134491410,3ptp4l6280-21ls20:25:211
134491410,3ptp4l2318-21gnome-shell21:22:590
134491410,3ptp4l12842-21irqstats19:30:190
134491410,3ptp4l12842-21irqstats19:30:190
2762994035,3cyclictest41-21ksoftirqd/323:20:013
2762994035,3cyclictest41-21ksoftirqd/323:15:003
2762994035,3cyclictest41-21ksoftirqd/321:05:203
276299401,3cyclictest121rcu_preempt19:36:583
276099409,2cyclictest25-21ksoftirqd/119:57:051
276099404,2cyclictest121rcu_preempt19:15:291
276099403,2cyclictest121rcu_preempt23:05:271
276099402,8cyclictest25-21ksoftirqd/123:20:171
276099400,2cyclictest121rcu_preempt19:37:101
2759994035,3cyclictest9-21ksoftirqd/020:45:000
134491400,7ptp4l0-21swapper/122:35:301
134491400,6ptp4l27218-21sshd00:39:253
134491400,5ptp4l0-21swapper/321:20:133
134491400,5ptp4l0-21swapper/320:00:203
134491400,5ptp4l0-21swapper/319:45:133
134491400,5ptp4l0-21swapper/022:29:340
134491400,4ptp4l941-21apt-get21:25:123
134491400,4ptp4l8979-21ls20:30:273
134491400,4ptp4l20986-21iostat_ios00:25:190
134491400,4ptp4l19792-21users00:20:293
134491400,4ptp4l16372-21iostat_ios00:15:190
134491400,4ptp4l12599-21hddtemp_smartct20:40:171
134491400,4ptp4l10449-21df_abs21:45:141
134491400,4ptp4l0-21swapper/321:04:333
134491400,4ptp4l0-21swapper/320:05:273
134491400,4ptp4l0-21swapper/223:56:102
134491400,4ptp4l0-21swapper/220:29:512
134491400,4ptp4l0-21swapper/123:41:561
134491400,4ptp4l0-21swapper/121:27:591
134491400,4ptp4l0-21swapper/121:20:281
134491400,4ptp4l0-21swapper/120:50:291
134491400,4ptp4l0-21swapper/120:00:191
134491400,4ptp4l0-21swapper/100:35:151
134491400,4ptp4l0-21swapper/023:51:480
134491400,4ptp4l0-21swapper/023:44:440
134491400,4ptp4l0-21swapper/021:55:510
134491400,4ptp4l0-21swapper/021:50:390
134491400,4ptp4l0-21swapper/021:49:350
134491400,4ptp4l0-21swapper/021:35:270
134491400,4ptp4l0-21swapper/021:27:210
134491400,4ptp4l0-21swapper/020:56:250
134491400,4ptp4l0-21swapper/020:25:370
134491400,4ptp4l0-21swapper/020:01:550
134491400,4ptp4l0-21swapper/019:20:140
134491400,4ptp4l0-21swapper/019:10:210
134491400,3ptp4l1497-21iostat_ios22:35:190
2762993934,3cyclictest41-21ksoftirqd/322:10:143
2762993934,3cyclictest41-21ksoftirqd/321:10:113
2762993934,3cyclictest41-21ksoftirqd/300:00:003
2762993933,3cyclictest41-21ksoftirqd/300:00:153
2762993933,3cyclictest41-21ksoftirqd/300:00:153
276199392,35cyclictest0-21swapper/220:50:222
276099398,7cyclictest25-21ksoftirqd/119:45:141
2760993935,2cyclictest25-21ksoftirqd/122:00:131
276099391,4cyclictest25-21ksoftirqd/100:25:231
2759993934,3cyclictest9-21ksoftirqd/022:44:590
2759993934,3cyclictest9-21ksoftirqd/022:20:000
134491390,5ptp4l422-21irqbalance22:30:270
134491390,5ptp4l12082-21netstat00:05:220
134491390,5ptp4l0-21swapper/322:50:193
134491390,5ptp4l0-21swapper/322:50:193
134491390,5ptp4l0-21swapper/320:40:163
134491390,5ptp4l0-21swapper/320:20:213
134491390,4ptp4l0-21swapper/319:59:513
134491390,4ptp4l0-21swapper/319:51:063
134491390,4ptp4l0-21swapper/223:18:372
134491390,4ptp4l0-21swapper/222:40:192
134491390,4ptp4l0-21swapper/221:00:062
134491390,4ptp4l0-21swapper/220:30:172
134491390,4ptp4l0-21swapper/219:57:412
134491390,4ptp4l0-21swapper/122:50:161
134491390,4ptp4l0-21swapper/122:50:151
134491390,4ptp4l0-21swapper/120:33:471
134491390,4ptp4l0-21swapper/120:15:031
134491390,4ptp4l0-21swapper/023:00:530
134491390,4ptp4l0-21swapper/021:16:430
134491390,4ptp4l0-21swapper/020:46:410
134491390,3ptp4l0-21swapper/022:50:250
134491390,3ptp4l0-21swapper/022:50:250
2762993835,2cyclictest41-21ksoftirqd/323:54:593
2762993832,3cyclictest41-21ksoftirqd/322:35:203
2761993833,3cyclictest33-21ksoftirqd/222:17:392
2760993827,9cyclictest25-21ksoftirqd/121:00:191
134491380,4ptp4l28111-21/usr/sbin/munin22:20:280
134491380,4ptp4l28111-21/usr/sbin/munin22:20:280
134491380,4ptp4l0-21swapper/323:40:193
134491380,4ptp4l0-21swapper/322:27:283
134491380,4ptp4l0-21swapper/322:15:163
134491380,4ptp4l0-21swapper/319:15:273
134491380,4ptp4l0-21swapper/121:05:231
134491380,4ptp4l0-21swapper/119:28:351
134491380,4ptp4l0-21swapper/022:11:440
134491380,4ptp4l0-21swapper/000:30:590
134491380,4ptp4l0-21swapper/000:20:140
134491380,3ptp4l0-21swapper/322:05:253
134491370,4ptp4l0-21swapper/322:40:243
134491370,4ptp4l0-21swapper/322:32:333
134491370,4ptp4l0-21swapper/300:25:173
134491370,4ptp4l0-21swapper/300:15:003
134491370,4ptp4l0-21swapper/300:06:163
134491370,3ptp4l0-21swapper/323:02:503
134491350,4ptp4l0-21swapper/320:45:143
46198320,11rtkit-daemon0-21swapper/319:08:193
3982183,9sleep2548-21df19:05:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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