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2025-11-18 - 09:33
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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 rackbslot1.osadl.org (updated Mon Nov 17, 2025 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15382232208181,18sleep30-21swapper/307:08:433
15382582193153,31sleep00-21swapper/007:09:080
15381592193150,34sleep10-21swapper/107:07:571
15380462193165,18sleep20-21swapper/207:06:282
153851899757,64cyclictest1721207-21kworker/u8:2+efi_rts_wq10:25:041
1538523996961,6cyclictest3125724-21ThreadPoolForeg08:25:003
1538518996660,3cyclictest247560-21ThreadPoolForeg10:45:011
1538523996562,2cyclictest1643453-21kworker/u8:0+flush-179:009:00:013
1538518996348,3cyclictest1576233-21snmp_areswitch.07:45:021
1538523996257,4cyclictest3125689-21ThreadPoolForeg10:10:353
1538523996252,4cyclictest1812041-21kworker/u8:0+flush-179:012:00:113
1538523996156,2cyclictest1763306-21/usr/share/muni10:45:013
1538520996055,4cyclictest1700765-21chrome09:45:022
16388582580,1chrt1638852-21chrome08:45:012
1538518995855,2cyclictest1721207-21kworker/u8:2+flush-179:010:05:311
1538523995754,2cyclictest1812997-21kworker/u8:2+flush-179:011:35:303
1538518995754,2cyclictest1596490-21kworker/u8:1+flush-179:008:45:311
1538518995753,3cyclictest1633434-21cp08:40:001
1538523995643,1cyclictest1576265-13chrome07:45:023
1538518995652,3cyclictest1643935-21kworker/u8:2+events_unbound08:55:311
1538518995552,2cyclictest1731442-21kworker/u8:1+events_unbound10:55:271
1538518995551,3cyclictest1812041-21kworker/u8:0+flush-179:011:50:291
1538515995551,3cyclictest247563-13Compositor11:30:230
1538515995549,5cyclictest3125724-21ThreadPoolForeg11:45:300
16852112540,1chrt1685208-21apache_accesses09:30:053
1538523995451,2cyclictest1604171-21kworker/u8:3+flush-179:008:15:103
1538523995451,2cyclictest1604171-21kworker/u8:3+flush-179:008:15:093
1538523995451,2cyclictest1570685-21kworker/u8:4+flush-179:007:40:183
1538523995447,6cyclictest1596490-21kworker/u8:1+flush-179:008:35:283
1538523995443,10cyclictest1689551-21kworker/u8:0+flush-179:009:35:233
1538523995436,12cyclictest1834131-21kworker/u8:4+flush-179:012:08:343
1538520995450,3cyclictest1684479-21kworker/u8:4+flush-179:010:25:142
1538518995451,2cyclictest1812041-21kworker/u8:0+events_unbound12:30:141
1538518995451,2cyclictest1643935-21kworker/u8:2+flush-179:009:15:211
1538518995440,3cyclictest1684479-21kworker/u8:4+events_unbound09:59:511
1538523995349,3cyclictest1850078-21kworker/u8:2+flush-179:012:24:593
1538523995349,3cyclictest1803542-31munin-graph11:20:553
1538523995349,3cyclictest1674168-21kworker/u8:1+flush-179:009:20:073
1538523995348,4cyclictest1601934-21munin-update08:10:343
1538518995341,4cyclictest1586165-21kworker/u8:2+events_unbound08:05:191
1538518995341,11cyclictest1604171-21kworker/u8:3+flush-179:008:41:331
1538515995347,4cyclictest1565827-21/usr/share/muni07:35:020
1538523995248,3cyclictest1684479-21kworker/u8:4+flush-179:009:55:183
1538520995248,3cyclictest1757545-21gpgv10:40:002
1538520995247,4cyclictest1587881-21ntpq07:55:172
1538520995238,2cyclictest1663368-21kworker/2:1+pm09:18:392
1538518995249,2cyclictest1812041-21kworker/u8:0+events_unbound11:55:281
1538518995249,2cyclictest1731442-21kworker/u8:1+events_unbound10:40:241
1538518995249,2cyclictest1721207-21kworker/u8:2+flush-179:011:00:291
1538518995249,2cyclictest1684479-21kworker/u8:4+flush-179:010:30:101
1538518995249,2cyclictest1664725-21kworker/u8:3+events_unbound09:30:391
1538518995148,2cyclictest1643453-21kworker/u8:0+flush-179:009:10:201
1538515995142,7cyclictest247560-21ThreadPoolForeg09:09:590
153851599510,48cyclictest3125724-21ThreadPoolForeg10:50:110
1538523995048,2cyclictest1533088-21kworker/u8:2+flush-179:007:20:293
1538523995047,2cyclictest1731442-21kworker/u8:1+events_unbound11:15:143
1538523995046,3cyclictest1747787-21kworker/u8:3+events_unbound10:30:313
1538518995046,3cyclictest1533088-21kworker/u8:2+flush-179:007:10:351
1538523994947,2cyclictest1604171-21kworker/u8:3+events_unbound08:50:223
1538523994938,2cyclictest1643453-21kworker/u8:0+events_unbound09:12:103
153852099499,8cyclictest3125726-13Chrome_ChildIOT11:13:212
1538518994947,2cyclictest1643453-21kworker/u8:0+flush-179:009:05:221
1538518994944,4cyclictest3125724-21ThreadPoolForeg08:20:311
1538515994945,3cyclictest1612230-21kworker/u8:4+flush-179:008:25:120
1538515994943,4cyclictest1865894-21/usr/share/muni12:25:090
1538515994939,8cyclictest1674168-21kworker/u8:1+flush-179:009:16:350
1538523994846,2cyclictest1527928-21kworker/u8:3+events_unbound07:39:463
1538523994845,2cyclictest1684479-21kworker/u8:4+flush-179:011:05:123
1538523994845,2cyclictest1596490-21kworker/u8:1+events_unbound08:45:253
1538523994844,3cyclictest1684479-21kworker/u8:4+events_unbound11:00:363
1538518994845,2cyclictest1803703-21kworker/u8:4+events_unbound11:30:321
1538518994845,2cyclictest1527928-21kworker/u8:3+events_unbound07:35:321
1538518994832,15cyclictest1643453-21kworker/u8:0+flush-179:008:54:111
1538515994841,6cyclictest247560-21ThreadPoolForeg12:35:140
1538523994745,2cyclictest1850078-21kworker/u8:2+flush-179:012:25:253
1538523994744,2cyclictest1586165-21kworker/u8:2+events_unbound08:04:363
1538523994743,3cyclictest1654518-21/usr/share/muni09:00:143
1538518994744,2cyclictest1731442-21kworker/u8:1+flush-179:011:15:221
16647312460,2chrt1664714-21snmp_areswitch.09:10:032
1538523994643,2cyclictest1850078-21kworker/u8:2+flush-179:012:30:303
1538523994642,3cyclictest1812041-21kworker/u8:0+events_unbound11:55:363
1538523994642,3cyclictest1684479-21kworker/u8:4+flush-179:009:40:283
1538523994642,3cyclictest1664725-21kworker/u8:3+events_unbound09:28:163
1538520994640,4cyclictest1767871-21kworker/u8:0+flush-179:010:56:562
1538520994637,7cyclictest3125687-21ThreadPoolForeg09:30:152
1538518994644,1cyclictest1731442-21kworker/u8:1+flush-179:010:35:171
1538518994643,3cyclictest1731442-21kworker/u8:1+flush-179:011:12:171
1538518994643,2cyclictest1821732-21kworker/u8:1+flush-179:011:45:001
1538518994643,2cyclictest1705398-21kworker/u8:0+events_unbound10:10:181
1538518994643,2cyclictest1664725-21kworker/u8:3+events_unbound09:37:521
1538518994642,3cyclictest1834131-21kworker/u8:4+events_unbound12:13:001
1538518994632,3cyclictest1731442-21kworker/u8:1+flush-179:011:23:381
1538515994642,3cyclictest1731442-21kworker/u8:1+flush-179:011:15:140
1538523994543,2cyclictest1674168-21kworker/u8:1+flush-179:009:20:003
1538523994542,2cyclictest1821732-21kworker/u8:1+flush-179:011:45:233
1538523994542,2cyclictest1721207-21kworker/u8:2+flush-179:010:17:023
1538520994542,2cyclictest1839779-21kworker/u8:1+flush-179:012:20:002
1538520994542,2cyclictest1554455-21kworker/2:0+pm07:51:172
1538520994530,14cyclictest1554400-1kworker/2:2H+kblockd07:34:162
1538518994543,2cyclictest1604171-21kworker/u8:3+flush-179:008:30:201
1538518994543,2cyclictest1604171-21kworker/u8:3+flush-179:008:25:221
1538518994542,2cyclictest1731442-21kworker/u8:1+events_unbound10:50:291
1538518994541,3cyclictest1674168-21kworker/u8:1+events_unbound09:22:351
1538518994541,3cyclictest1570685-21kworker/u8:4+flush-179:007:50:161
1538515994541,3cyclictest1735864-31munin-html10:15:360
1538515994541,3cyclictest1721207-21kworker/u8:2+flush-179:011:20:330
1538515994541,3cyclictest1721207-21kworker/u8:2+flush-179:010:20:280
1538515994541,3cyclictest1664725-21kworker/u8:3+flush-179:009:55:080
1538515994538,5cyclictest1875476-31munin-graph12:31:360
1538515994537,6cyclictest247515-21ThreadPoolForeg10:10:190
1538523994441,2cyclictest1684479-21kworker/u8:4+flush-179:010:05:373
1538520994442,1cyclictest1554400-1kworker/2:2H+kblockd08:23:082
1538520994441,2cyclictest1783151-1kworker/2:1H+kblockd11:07:502
1538520994440,3cyclictest1812997-21kworker/u8:2+flush-179:011:37:242
1538520994438,4cyclictest1721207-21kworker/u8:2+flush-179:010:05:162
1538520994430,13cyclictest1700545-21kworker/2:2+pm10:33:042
1538518994441,2cyclictest1533088-21kworker/u8:2+flush-179:007:20:081
1538518994440,3cyclictest1862741-21kworker/u8:3+events_unbound12:28:581
1538518994440,3cyclictest1548729-21kworker/u8:0+events_unbound07:59:421
1538518994438,5cyclictest1736725-21munin-update10:20:081
1538523994341,2cyclictest1731442-21kworker/u8:1+events_unbound11:25:053
1538523994340,2cyclictest1839779-21kworker/u8:1+events_unbound12:15:173
1538523994340,2cyclictest1664725-21kworker/u8:3+flush-179:009:50:253
1538523994339,3cyclictest1812041-21kworker/u8:0+flush-179:011:31:523
1538523994339,3cyclictest1586165-21kworker/u8:2+flush-179:007:57:053
1538523994339,3cyclictest1533088-21kworker/u8:2+events_unbound07:10:303
1538518994341,2cyclictest1812997-21kworker/u8:2+flush-179:011:45:281
1538518994340,2cyclictest1731442-21kworker/u8:1+events_unbound11:06:461
1538518994339,3cyclictest1812041-21kworker/u8:0+events_unbound12:02:091
1538518994339,3cyclictest1643935-21kworker/u8:2+flush-179:009:00:211
1538518994339,3cyclictest1596490-21kworker/u8:1+flush-179:008:10:151
1538518994339,3cyclictest1561294-21kworker/u8:2+flush-179:007:31:501
1538518994337,5cyclictest1664725-21kworker/u8:3+flush-179:009:48:261
1538515994341,1cyclictest1379066-1kworker/0:1H+kblockd09:11:170
1538515994339,3cyclictest1731442-21kworker/u8:1+events_unbound10:25:350
1538515994339,3cyclictest1674168-21kworker/u8:1+flush-179:009:20:320
1538523994239,2cyclictest1812041-21kworker/u8:0+events_unbound11:40:263
1538523994239,2cyclictest1548729-21kworker/u8:0+flush-179:007:25:313
1538523994239,2cyclictest1533088-21kworker/u8:2+events_unbound07:16:313
1538523994238,3cyclictest1731442-21kworker/u8:1+flush-179:011:11:203
1538520994238,3cyclictest1700545-21kworker/2:2+pm11:30:062
1538520994237,4cyclictest3125725-21ThreadPoolForeg11:00:362
1538520994235,5cyclictest1839779-21kworker/u8:1+flush-179:012:22:062
1538520994235,5cyclictest1700460-21latency_hist09:45:012
1538520994235,5cyclictest1679326-31munin-html09:20:422
1538520994235,5cyclictest1591549-21kworker/2:1+pm08:05:542
1538515994238,3cyclictest1604854-21kworker/u8:5+flush-179:008:15:060
1538515994238,3cyclictest1604854-21kworker/u8:5+flush-179:008:15:060
153851599421,39cyclictest3125648-13Chrome_IOThread11:55:300
1538523994139,2cyclictest1731442-21kworker/u8:1+events_unbound10:50:193
1538523994138,2cyclictest1812041-21kworker/u8:0+events_unbound11:52:343
1538523994138,2cyclictest1747787-21kworker/u8:3+events_unbound10:39:583
1538523994138,2cyclictest1721207-21kworker/u8:2+flush-179:010:42:593
1538523994138,2cyclictest1684479-21kworker/u8:4+flush-179:010:25:203
1538523994137,3cyclictest1705398-21kworker/u8:0+events_unbound10:00:193
1538520994138,2cyclictest1824070-21kworker/2:1+pm11:53:242
1538520994138,2cyclictest1700545-21kworker/2:2+pm10:45:062
1538520994137,2cyclictest1603861-21kworker/2:0+pm09:05:092
1538520994135,3cyclictest1554400-1kworker/2:2H+kblockd09:52:402
1538520994128,1cyclictest1603861-21kworker/2:0+pm09:02:152
1538520994127,13cyclictest1663368-21kworker/2:1+pm09:36:502
1538518994138,2cyclictest1643935-21kworker/u8:2+flush-179:009:25:051
1538518994137,3cyclictest1643935-21kworker/u8:2+flush-179:009:50:351
1538518994137,3cyclictest1570685-21kworker/u8:4+events_unbound08:02:121
1538515994133,5cyclictest1645530-21apt-get08:50:120
1538523994037,2cyclictest1596490-21kworker/u8:1+events_unbound08:44:393
1538523994036,3cyclictest1604171-21kworker/u8:3+flush-179:008:25:243
1538523994022,4cyclictest3125689-21ThreadPoolForeg12:37:003
153852099408,29cyclictest247545-13VizCompositorTh08:50:522
1538520994037,2cyclictest1824070-21kworker/2:1+pm12:35:222
1538520994037,2cyclictest1824070-21kworker/2:1+pm11:56:522
1538520994037,2cyclictest1700545-21kworker/2:2+pm11:15:542
1538520994037,2cyclictest1700545-21kworker/2:2+pm10:23:512
1538520994037,2cyclictest1501781-21kworker/2:2+pm07:22:282
1538520994035,3cyclictest1700545-21kworker/2:2+pm11:42:092
1538520994034,4cyclictest1555264-21/usr/share/muni07:25:122
1538520994010,28cyclictest247557-21chrome12:01:102
1538518994036,3cyclictest1834131-21kworker/u8:4+flush-179:012:17:031
1538518994036,3cyclictest1604854-21kworker/u8:5+flush-179:008:15:151
1538518994036,3cyclictest1604854-21kworker/u8:5+flush-179:008:15:151
1538518994036,3cyclictest1527928-21kworker/u8:3+flush-179:007:19:331
1538515994036,3cyclictest1812041-21kworker/u8:0+flush-179:011:40:300
1538515994033,5cyclictest3125728-13Compositor12:10:280
153851599400,39cyclictest247557-21chrome09:45:320
1538523993937,2cyclictest1548729-21kworker/u8:0+flush-179:007:50:183
1538523993936,3cyclictest1664725-21kworker/u8:3+flush-179:009:47:003
1538523993936,2cyclictest1623393-21/usr/share/muni08:30:133
1538523993936,2cyclictest1570685-21kworker/u8:4+events_unbound08:05:143
1538520993938,1cyclictest1501781-21kworker/2:2+pm07:16:382
1538520993936,2cyclictest1824070-21kworker/2:1+pm12:11:022
1538520993936,2cyclictest1700545-21kworker/2:2+pm10:53:152
1538520993936,2cyclictest1700545-21kworker/2:2+pm10:00:062
1538520993936,2cyclictest1700545-21kworker/2:2+pm09:58:402
1538520993936,2cyclictest1663368-21kworker/2:1+pm09:28:542
1538520993936,2cyclictest1554455-21kworker/2:0+pm07:40:052
1538520993936,2cyclictest1554455-21kworker/2:0+pm07:35:132
1538520993935,3cyclictest1824070-21kworker/2:1+pm12:25:242
1538520993935,3cyclictest1700545-21kworker/2:2+pm10:41:192
1538520993935,3cyclictest1603861-21kworker/2:0+pm08:15:522
1538520993935,3cyclictest1603861-21kworker/2:0+pm08:15:522
1538520993935,2cyclictest1700545-21kworker/2:2+pm11:25:222
1538520993935,2cyclictest1554455-21kworker/2:0+pm08:02:142
1538518993935,3cyclictest1834131-21kworker/u8:4+flush-179:012:24:191
1538523993835,2cyclictest1726126-1kworker/3:2H+kblockd10:55:063
1538523993833,4cyclictest3125687-21ThreadPoolForeg12:13:353
1538520993836,1cyclictest1700545-21kworker/2:2+pm10:13:062
1538520993835,2cyclictest1700545-21kworker/2:2+pm11:20:092
1538520993835,2cyclictest1700545-21kworker/2:2+pm10:15:162
1538520993835,2cyclictest1603861-21kworker/2:0+pm08:37:372
1538520993834,3cyclictest1783151-1kworker/2:1H+kblockd12:30:032
1538520993834,3cyclictest1603861-21kworker/2:0+pm08:45:162
1538520993834,2cyclictest1554455-21kworker/2:0+pm07:46:402
1538520993834,2cyclictest1554400-1kworker/2:2H+kblockd08:32:472
1538520993833,3cyclictest1824070-21kworker/2:1+pm12:05:142
1538520993825,2cyclictest1824070-21kworker/2:1+pm11:49:352
1538518993834,3cyclictest1813664-1kworker/1:0H+kblockd12:05:051
1538518993834,3cyclictest1705398-21kworker/u8:0+events_unbound10:16:291
1538518993831,2cyclictest1643935-21kworker/u8:2+flush-179:009:43:331
1538518993829,8cyclictest1812997-21kworker/u8:2+flush-179:011:35:281
1538515993836,1cyclictest1538066-21kworker/0:0+pm07:13:060
1538515993835,2cyclictest1643935-21kworker/u8:2+flush-179:009:30:270
1538515993835,2cyclictest1581559-21kworker/0:0+pm07:52:090
1538515993835,2cyclictest1527928-21kworker/u8:3+events_unbound07:21:070
1538515993834,3cyclictest1803630-21kworker/u8:3+flush-179:011:25:370
1538515993834,3cyclictest1527928-21kworker/u8:3+flush-179:007:15:230
1538515993834,3cyclictest1379066-1kworker/0:1H+kblockd10:45:070
1538515993833,4cyclictest247573-21ThreadPoolForeg08:48:230
1538515993831,6cyclictest1596490-21kworker/u8:1+flush-179:008:31:480
1538523993733,3cyclictest1596490-21kworker/u8:1+flush-179:009:06:113
1538520993735,1cyclictest1603861-21kworker/2:0+pm08:55:052
1538520993735,1cyclictest1591549-21kworker/2:1+pm08:11:482
1538520993734,2cyclictest1603861-21kworker/2:0+pm08:26:012
1538520993734,2cyclictest1451204-1kworker/2:0H+kblockd07:10:032
1538518993734,2cyclictest1812041-21kworker/u8:0+flush-179:012:38:441
1538518993734,2cyclictest1803630-21kworker/u8:3+flush-179:011:27:161
1538515993735,1cyclictest1379066-1kworker/0:1H+kblockd10:02:100
1538515993734,2cyclictest1839706-1kworker/0:0H+kblockd12:02:590
1538515993734,2cyclictest1379066-1kworker/0:1H+kblockd09:51:130
1538515993733,3cyclictest1812041-21kworker/u8:0+events_unbound11:50:110
1538515993732,4cyclictest1576174-13chrome07:45:020
1538515993730,5cyclictest1613117-21/usr/share/muni08:20:160
1538515993730,3cyclictest1721207-21kworker/u8:2+events_unbound11:05:520
1538515993725,1cyclictest1260-21snmpd11:03:580
1538518993633,2cyclictest1570685-21kworker/u8:4+events_unbound07:40:071
1538518993633,2cyclictest1548729-21kworker/u8:0+flush-179:007:27:111
1538515993632,3cyclictest1643935-21kworker/u8:2+flush-179:009:37:010
1538515993632,3cyclictest1379066-1kworker/0:1H+kblockd07:26:340
1538515993630,5cyclictest3125724-21ThreadPoolForeg08:55:320
1538518993526,9cyclictest1684479-21kworker/u8:4+flush-179:010:02:451
1538515993532,2cyclictest247563-13Compositor10:33:160
1538515993532,2cyclictest1664157-21kworker/0:1+pm10:43:140
1538515993532,2cyclictest1596490-21kworker/u8:1+flush-179:008:35:070
1538515993532,2cyclictest1379066-1kworker/0:1H+kblockd10:37:360
1538515993532,2cyclictest1379066-1kworker/0:1H+kblockd10:06:590
1538515993532,2cyclictest1379066-1kworker/0:1H+kblockd07:40:200
1538515993531,3cyclictest0-21swapper/009:40:190
1538515993530,4cyclictest1839779-21kworker/u8:1+events_unbound12:05:360
1538515993530,4cyclictest1596857-21latency_hist08:05:010
1538515993530,3cyclictest1643453-21kworker/u8:0+flush-179:009:01:550
1538523993430,3cyclictest1548729-21kworker/u8:0+flush-179:007:33:393
1538523993427,6cyclictest247562-13Chrome_ChildIOT10:23:423
1538515993432,1cyclictest1379066-1kworker/0:1H+kblockd09:25:590
1538515993431,2cyclictest1379066-1kworker/0:1H+kblockd10:56:010
1538515993431,2cyclictest1379066-1kworker/0:1H+kblockd07:55:060
1538515993430,3cyclictest1628621-21kworker/u8:4+flush-179:008:40:220
1538515993429,4cyclictest1565430-21gpgv07:35:010
1538515993428,5cyclictest247561-21ThreadPoolForeg12:23:090
1538515993418,14cyclictest3125728-13Compositor08:08:560
1538515993329,3cyclictest1834131-21kworker/u8:4+flush-179:012:19:300
1538515993328,4cyclictest1604171-21kworker/u8:3+events_unbound08:10:350
1538515993327,5cyclictest1731442-21kworker/u8:1+events_unbound11:11:510
1538515993117,2cyclictest3125726-13Chrome_ChildIOT11:35:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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