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2026-03-13 - 07:11
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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 376 highest latencies:
System rackdslot1.osadl.org (updated Fri Mar 13, 2026 00:45:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1344914760,1ptp4l7076-21ls19:05:210
1344914760,1ptp4l7076-21ls19:05:210
8396997830,6cyclictest25-21ksoftirqd/100:05:001
7842660,3sleep2321ktimersoftd/220:00:252
8396996428,6cyclictest25-21ksoftirqd/100:15:131
8396996329,7cyclictest25-21ksoftirqd/100:30:011
8396996328,4cyclictest25-21ksoftirqd/119:15:251
8395996223,6cyclictest9-21ksoftirqd/020:20:070
8396996133,4cyclictest25-21ksoftirqd/121:17:321
8396996131,4cyclictest25-21ksoftirqd/119:10:261
8396996129,9cyclictest25-21ksoftirqd/121:35:121
8396996030,6cyclictest25-21ksoftirqd/123:25:001
8396996028,6cyclictest25-21ksoftirqd/119:40:131
8395995929,3cyclictest9-21ksoftirqd/020:10:120
134491590,4ptp4l0-21swapper/322:35:493
134491590,4ptp4l0-21swapper/000:32:360
839699582,9cyclictest25-21ksoftirqd/122:15:011
839599585,10cyclictest9-21ksoftirqd/019:35:210
839599584,9cyclictest9-21ksoftirqd/021:10:230
134491580,4ptp4l17815-21dump-pmu-power19:30:003
134491580,4ptp4l0-21swapper/221:35:002
134491580,4ptp4l0-21swapper/022:02:050
134491580,3ptp4l0-21swapper/220:12:502
839699574,9cyclictest25-21ksoftirqd/100:20:261
8396995731,7cyclictest25-21ksoftirqd/123:05:141
8396995727,4cyclictest25-21ksoftirqd/122:40:261
8396995726,9cyclictest25-21ksoftirqd/121:05:261
839599573,9cyclictest9-21ksoftirqd/019:50:000
134491570,3ptp4l0-21swapper/321:55:273
134491570,3ptp4l0-21swapper/223:15:202
134491570,3ptp4l0-21swapper/220:06:482
8396995620,8cyclictest25-21ksoftirqd/120:20:171
839599565,9cyclictest9-21ksoftirqd/022:55:010
839599565,7cyclictest9-21ksoftirqd/021:00:300
839599565,10cyclictest9-21ksoftirqd/019:30:160
8395995610,3cyclictest121rcu_preempt23:20:150
134491560,5ptp4l0-21swapper/022:35:540
134491560,3ptp4l0-21swapper/322:10:133
134491560,3ptp4l0-21swapper/319:13:203
134491560,3ptp4l0-21swapper/221:15:362
134491560,3ptp4l0-21swapper/219:41:532
839599555,9cyclictest9-21ksoftirqd/020:50:250
839599555,8cyclictest9-21ksoftirqd/020:35:210
839599555,8cyclictest9-21ksoftirqd/020:35:210
134491550,4ptp4l0-21swapper/323:04:113
134491550,3ptp4l0-21swapper/320:02:583
134491550,3ptp4l0-21swapper/319:55:173
134491550,3ptp4l0-21swapper/319:55:173
134491550,3ptp4l0-21swapper/219:45:072
8396995414,4cyclictest25-21ksoftirqd/122:47:541
839599546,8cyclictest20216-21apt21:55:000
839599545,10cyclictest9-21ksoftirqd/021:10:000
839599544,9cyclictest9-21ksoftirqd/022:45:160
839599544,9cyclictest9-21ksoftirqd/019:50:220
839599544,9cyclictest9-21ksoftirqd/019:40:260
839599544,8cyclictest9-21ksoftirqd/000:35:140
134491540,3ptp4l0-21swapper/321:25:003
134491540,3ptp4l0-21swapper/320:31:113
839699536,8cyclictest13767-21apt-get22:50:111
8396995342,3cyclictest25-21ksoftirqd/119:25:001
839699532,9cyclictest25-21ksoftirqd/100:10:141
8396995327,4cyclictest25-21ksoftirqd/119:45:121
8396995324,3cyclictest25-21ksoftirqd/123:45:211
839599534,9cyclictest9-21ksoftirqd/000:10:170
8395995323,9cyclictest9-21ksoftirqd/020:07:320
134491530,5ptp4l0-21swapper/219:08:212
134491530,5ptp4l0-21swapper/219:08:212
8396995223,8cyclictest25-21ksoftirqd/123:50:271
839699522,10cyclictest25-21ksoftirqd/119:50:261
839599525,8cyclictest9-21ksoftirqd/000:20:010
839599524,9cyclictest9-21ksoftirqd/021:20:580
839599521,9cyclictest9-21ksoftirqd/020:15:190
134491520,4ptp4l0-21swapper/223:06:532
134491520,3ptp4l0-21swapper/322:22:043
839699515,9cyclictest25-21ksoftirqd/121:25:271
839699514,8cyclictest25-21ksoftirqd/120:25:201
839699514,10cyclictest25-21ksoftirqd/121:00:271
8396995131,9cyclictest25-21ksoftirqd/123:40:261
839699511,6cyclictest25-21ksoftirqd/122:25:001
839599516,8cyclictest9-21ksoftirqd/023:50:210
839599515,12cyclictest9-21ksoftirqd/021:30:220
839599514,8cyclictest9-21ksoftirqd/020:45:150
839599513,8cyclictest9-21ksoftirqd/023:10:230
839599510,6cyclictest101ktimersoftd/020:00:000
839599510,6cyclictest101ktimersoftd/020:00:000
134491510,4ptp4l0-21swapper/222:55:422
134491510,2ptp4l26069-21ls22:05:193
839699505,8cyclictest17609-21sshd00:05:211
839699505,3cyclictest25-21ksoftirqd/120:45:191
839699505,10cyclictest25-21ksoftirqd/122:05:231
839699504,9cyclictest25-21ksoftirqd/122:15:011
839699503,8cyclictest121rcu_preempt23:15:261
8396995033,8cyclictest25-21ksoftirqd/122:30:151
839699502,8cyclictest25-21ksoftirqd/121:45:151
839699501,6cyclictest25-21ksoftirqd/120:30:261
8396995013,6cyclictest25-21ksoftirqd/122:25:191
839699500,8cyclictest25-21ksoftirqd/121:40:201
839699500,7cyclictest25-21ksoftirqd/100:25:311
839599505,10cyclictest9-21ksoftirqd/019:10:110
839599503,8cyclictest9-21ksoftirqd/022:40:130
839599503,8cyclictest9-21ksoftirqd/021:40:250
839599503,5cyclictest26223-21ntpq22:05:210
8395995014,6cyclictest9-21ksoftirqd/020:31:200
134491500,8ptp4l0-21swapper/321:50:163
134491500,4ptp4l0-21swapper/320:13:113
134491500,4ptp4l0-21swapper/319:53:373
134491500,3ptp4l0-21swapper/321:19:523
839699496,3cyclictest14211-21apt-config00:00:001
8396994932,8cyclictest25-21ksoftirqd/121:15:001
8396994932,4cyclictest25-21ksoftirqd/120:40:001
8396994932,4cyclictest25-21ksoftirqd/120:40:001
839699492,6cyclictest0-21swapper/123:30:161
8396994910,6cyclictest25-21ksoftirqd/121:34:591
839599496,9cyclictest9-21ksoftirqd/000:10:000
839599496,6cyclictest9-21ksoftirqd/000:25:010
839599494,8cyclictest9-21ksoftirqd/023:00:130
839599494,10cyclictest9-21ksoftirqd/019:15:140
839599493,9cyclictest16995-21open_files21:45:230
839599492,8cyclictest9-21ksoftirqd/019:25:240
8395994918,5cyclictest9-21ksoftirqd/022:10:270
839599491,5cyclictest9-21ksoftirqd/019:20:120
8396994836,4cyclictest25-21ksoftirqd/123:40:001
8396994832,7cyclictest25-21ksoftirqd/121:50:281
8396994831,7cyclictest25-21ksoftirqd/123:30:001
839699483,10cyclictest25-21ksoftirqd/121:55:171
8396994819,8cyclictest25-21ksoftirqd/120:09:011
839699480,6cyclictest25-21ksoftirqd/123:00:121
839599489,6cyclictest9-21ksoftirqd/023:30:260
839599485,8cyclictest9-21ksoftirqd/022:20:140
839599485,8cyclictest9-21ksoftirqd/020:40:120
839599483,9cyclictest9-21ksoftirqd/023:15:200
839599482,6cyclictest13366-21sendmail-msp21:40:000
839599482,5cyclictest9-21ksoftirqd/023:10:010
134491480,8ptp4l0-21swapper/119:05:181
134491480,8ptp4l0-21swapper/119:05:181
134491480,3ptp4l0-21swapper/219:35:222
839699479,3cyclictest25-21ksoftirqd/119:55:091
839699479,3cyclictest25-21ksoftirqd/119:55:091
839699474,7cyclictest0-21swapper/123:10:251
8396994731,8cyclictest25-21ksoftirqd/122:35:231
8396994721,3cyclictest25-21ksoftirqd/120:04:431
839599476,9cyclictest9-21ksoftirqd/000:00:010
839599474,8cyclictest9-21ksoftirqd/020:25:270
839599472,9cyclictest9-21ksoftirqd/021:25:280
839599472,8cyclictest9-21ksoftirqd/023:35:250
134491470,4ptp4l839899cyclictest22:15:543
134491470,4ptp4l0-21swapper/222:30:332
134491470,4ptp4l0-21swapper/222:19:362
134491470,2ptp4l0-21swapper/322:42:443
8396994632,3cyclictest25-21ksoftirqd/121:20:241
839699462,9cyclictest25-21ksoftirqd/120:55:201
839699462,6cyclictest25-21ksoftirqd/120:20:001
839599469,6cyclictest9-21ksoftirqd/022:15:210
839599463,7cyclictest9-21ksoftirqd/021:55:270
8395994631,8cyclictest9-21ksoftirqd/022:55:170
8395994618,8cyclictest9-21ksoftirqd/020:55:210
134491460,8ptp4l401ktimersoftd/323:05:283
134491460,4ptp4l0-21swapper/321:47:433
134491460,4ptp4l0-21swapper/319:09:513
134491460,4ptp4l0-21swapper/319:09:513
134491460,3ptp4l0-21swapper/220:18:262
839699459,6cyclictest25-21ksoftirqd/100:35:511
839699456,9cyclictest25-21ksoftirqd/122:00:131
839699455,8cyclictest25-21ksoftirqd/122:55:141
8396994531,4cyclictest25-21ksoftirqd/120:53:111
839699451,9cyclictest25-21ksoftirqd/119:25:131
839599455,5cyclictest9-21ksoftirqd/022:30:150
839599454,8cyclictest9-21ksoftirqd/000:25:180
839599452,7cyclictest9-21ksoftirqd/023:40:160
839599452,5cyclictest9-21ksoftirqd/021:15:130
134491450,4ptp4l0-21swapper/221:00:002
134491450,4ptp4l0-21swapper/220:50:032
134491450,3ptp4l0-21swapper/321:44:013
134491450,3ptp4l0-21swapper/319:40:283
8397994439,3cyclictest33-21ksoftirqd/220:45:002
8397994438,3cyclictest33-21ksoftirqd/223:30:002
839699444,8cyclictest22435-21ls19:40:001
8396994428,8cyclictest25-21ksoftirqd/119:30:281
839599445,9cyclictest9-21ksoftirqd/023:50:000
8395994440,2cyclictest111rcuc/020:00:120
134491440,5ptp4l22819-21apt-get20:50:123
134491440,4ptp4l0-21swapper/222:14:232
134491440,3ptp4l1301-21snmpd21:09:112
134491440,3ptp4l0-21swapper/223:40:202
134491440,2ptp4l121rcu_preempt00:37:143
134491440,10ptp4l0-21swapper/220:24:362
8397994337,3cyclictest33-21ksoftirqd/200:10:002
839699432,6cyclictest25-21ksoftirqd/120:10:011
839599433,6cyclictest9-21ksoftirqd/023:30:000
8395994325,6cyclictest9-21ksoftirqd/022:25:220
839599432,4cyclictest0-21swapper/000:05:010
134491430,5ptp4l0-21swapper/322:47:203
134491430,4ptp4l0-21swapper/120:43:441
134491430,3ptp4l401ktimersoftd/323:50:203
134491430,3ptp4l0-21swapper/300:29:033
134491430,10ptp4l0-21swapper/219:26:142
8397994236,3cyclictest33-21ksoftirqd/220:29:592
134491420,9ptp4l0-21swapper/320:41:333
134491420,5ptp4l22776-21apt-get22:00:123
134491420,4ptp4l25076-21apt-get22:05:102
134491420,4ptp4l19363-21apt-get00:10:123
134491420,3ptp4l13253-21apt-get19:20:103
134491420,3ptp4l0-21swapper/323:44:543
8397994136,3cyclictest33-21ksoftirqd/221:35:002
8397994127,12cyclictest33-21ksoftirqd/219:15:012
134491410,7ptp4l16091-21cat22:55:013
134491410,5ptp4l2925-21diskstats23:35:143
134491410,5ptp4l0-21swapper/320:05:153
134491410,5ptp4l0-21swapper/300:15:193
134491410,5ptp4l0-21swapper/220:35:252
134491410,5ptp4l0-21swapper/220:35:242
134491410,4ptp4l9746-21apt-get23:50:122
134491410,4ptp4l839899cyclictest21:20:133
134491410,4ptp4l6864-21df21:25:152
134491410,4ptp4l32661-21apt-get23:30:123
134491410,4ptp4l0-21swapper/300:20:133
134491410,4ptp4l0-21swapper/219:15:262
134491410,3ptp4l23393-21df23:10:132
134491410,3ptp4l13253-21apt-get19:20:112
134491410,3ptp4l0-21swapper/221:20:372
8397994029,9cyclictest33-21ksoftirqd/220:30:212
134491400,5ptp4l1222-21sed21:10:283
134491400,5ptp4l0-21swapper/320:25:123
134491400,5ptp4l0-21swapper/223:45:262
134491400,5ptp4l0-21swapper/220:45:122
134491400,4ptp4l15916-21apt-get20:35:143
134491400,4ptp4l15916-21apt-get20:35:143
134491400,4ptp4l0-21swapper/323:18:033
134491400,4ptp4l0-21swapper/220:56:112
134491400,4ptp4l0-21swapper/200:00:002
134491400,3ptp4l8957-21apt-get21:30:113
134491400,3ptp4l7816-21ntp_states20:15:233
134491400,3ptp4l32204-21apt-get23:30:012
134491400,3ptp4l121rcu_preempt20:20:253
134491400,3ptp4l10937-21apt-get19:15:123
134491400,3ptp4l10108-21ls22:40:192
134491400,2ptp4l5352-21irqstats22:30:203
8397993933,3cyclictest33-21ksoftirqd/222:40:002
134491390,6ptp4l0-21swapper/200:30:142
134491390,5ptp4l0-21swapper/319:30:163
134491390,5ptp4l0-21swapper/300:34:143
134491390,5ptp4l0-21swapper/223:55:192
134491390,4ptp4l20338-21/usr/sbin/munin19:35:153
134491390,4ptp4l0-21swapper/323:25:253
134491390,4ptp4l0-21swapper/322:28:483
134491390,4ptp4l0-21swapper/321:05:273
134491390,4ptp4l0-21swapper/319:45:263
134491390,4ptp4l0-21swapper/223:35:182
134491390,4ptp4l0-21swapper/222:26:592
134491390,4ptp4l0-21swapper/222:20:192
134491390,4ptp4l0-21swapper/222:00:162
134491390,4ptp4l0-21swapper/219:55:242
134491390,4ptp4l0-21swapper/219:55:242
134491390,4ptp4l0-21swapper/219:54:562
134491390,4ptp4l0-21swapper/200:25:202
134491390,3ptp4l8951-21ls23:45:253
134491390,3ptp4l662-21ls21:10:222
134491390,3ptp4l20524-21apt-get20:45:123
134491390,3ptp4l18900-21irqstats19:30:192
134491390,2ptp4l10279-21kworker/2:221:47:392
134491380,4ptp4l29316-21cat23:20:272
134491380,4ptp4l29164-21vmstat21:00:303
134491380,4ptp4l0-21swapper/323:10:143
134491380,4ptp4l0-21swapper/322:55:233
134491380,4ptp4l0-21swapper/321:35:153
134491380,4ptp4l0-21swapper/320:55:383
134491380,4ptp4l0-21swapper/300:05:583
134491380,4ptp4l0-21swapper/300:00:033
134491380,4ptp4l0-21swapper/223:01:282
134491380,4ptp4l0-21swapper/221:55:212
134491380,4ptp4l0-21swapper/221:54:552
134491380,4ptp4l0-21swapper/221:40:102
134491380,3ptp4l12045-21apt-get23:55:123
134491380,3ptp4l0-21swapper/222:45:292
134491380,3ptp4l0-21swapper/200:15:182
8397993732,3cyclictest33-21ksoftirqd/200:35:272
8397993728,3cyclictest33-21ksoftirqd/222:50:152
134491370,5ptp4l0-21swapper/323:20:133
134491370,4ptp4l0-21swapper/200:20:262
134491370,4ptp4l0-21swapper/200:10:202
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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