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2026-01-04 - 18:40
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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 Sun Jan 04, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17764902217193,14sleep10-21swapper/107:07:481
17765792205181,14sleep20-21swapper/207:08:582
17765502201177,16sleep30-21swapper/307:08:353
17766322196172,14sleep00-21swapper/007:09:360
184931821260,2sleep13125725-21ThreadPoolForeg08:15:401
177687599901,2cyclictest1813877-21snmp_wanswitch.07:45:022
1776866998831,12cyclictest1937771-21snmp_wlanpowerc09:45:020
1776872998224,56cyclictest1937801-21chrome09:45:021
1776879996461,2cyclictest1756106-21kworker/u8:0+flush-179:007:30:113
1776879996460,3cyclictest1968738-21kworker/u8:0+flush-179:011:00:003
1776875996036,21cyclictest2061360-21ThreadPoolForeg11:45:222
1776879995854,3cyclictest1923716-21kworker/u8:2+events_unbound09:48:003
1776866995850,7cyclictest247560-21ThreadPoolForeg11:03:290
1776866995850,7cyclictest247560-21ThreadPoolForeg11:03:290
1776879995652,3cyclictest1813169-21kworker/u8:2+events_unbound09:15:303
1776879995550,4cyclictest1942563-21kworker/u8:0+flush-179:010:05:293
1776879995450,3cyclictest1823640-21kworker/u8:1+events_unbound08:40:273
1776879995350,2cyclictest2030354-21kworker/u8:2+events_unbound11:29:433
1776879995350,2cyclictest1982817-21kworker/u8:1+events_unbound10:45:003
1776879995345,6cyclictest247560-21ThreadPoolForeg12:35:263
1776872995347,4cyclictest2066594-21/usr/share/muni11:50:181
1776879995250,2cyclictest1968738-21kworker/u8:0+events_unbound10:16:513
1776879995250,2cyclictest1777155-21kworker/u8:3+flush-179:007:10:203
1776879995248,3cyclictest1823640-21kworker/u8:1+events_unbound08:50:373
1776879995147,3cyclictest2007339-21kworker/u8:4+events_unbound11:45:293
1776879995147,3cyclictest1968738-21kworker/u8:0+flush-179:010:51:543
1776879995146,4cyclictest1864768-21ntpq08:30:283
1776879995146,4cyclictest1864768-21ntpq08:30:283
1776866995145,4cyclictest1860312-21cp08:30:010
1776879995045,4cyclictest2007339-21kworker/u8:4+events_unbound11:15:013
1776875995045,4cyclictest1797922-21kworker/u8:4+flush-179:008:45:062
1776866995045,4cyclictest1813169-21kworker/u8:2+flush-179:009:00:300
1776866995041,7cyclictest1819134-21/usr/share/muni07:50:140
1776879994944,4cyclictest1823640-21kworker/u8:1+events_unbound08:15:153
1776879994943,4cyclictest1947812-21kworker/u8:1+events_unbound10:10:073
1776879994943,4cyclictest1886015-21kworker/u8:3+events_unbound08:56:213
1776875994942,5cyclictest1808708-21/usr/share/muni07:40:162
1776866994945,3cyclictest2086750-21apt-get12:09:590
1776879994844,3cyclictest2004450-21kworker/u8:3+flush-179:011:05:313
1776879994844,3cyclictest1813169-21kworker/u8:2+flush-179:007:50:123
1776879994843,4cyclictest2036349-21kworker/u8:0+flush-179:011:36:523
1776879994843,3cyclictest2075516-21kworker/u8:3+events_unbound12:30:013
1776879994842,4cyclictest1756106-21kworker/u8:0+events_unbound07:55:133
1776879994744,2cyclictest1968738-21kworker/u8:0+flush-179:010:46:293
1776879994744,2cyclictest1968738-21kworker/u8:0+flush-179:010:46:283
1776879994743,3cyclictest2071060-21kworker/u8:1+flush-179:011:52:513
1776879994743,3cyclictest1813169-21kworker/u8:2+events_unbound07:45:173
1776879994743,3cyclictest1756106-21kworker/u8:0+events_unbound07:15:203
1776879994742,3cyclictest1823640-21kworker/u8:1+events_unbound08:13:343
1776879994734,12cyclictest1394450-1kworker/3:0H+kblockd09:30:333
1776866994740,6cyclictest1949412-21apt-get09:55:150
1776879994643,2cyclictest1917506-21kworker/u8:4+events_unbound10:30:213
1776879994643,2cyclictest1911580-21kworker/u8:1+events_unbound09:26:173
1776879994641,4cyclictest2071060-21kworker/u8:1+events_unbound12:09:233
1776879994641,4cyclictest2039855-31munin-html11:20:373
1776875994643,2cyclictest1893466-21kworker/u8:4+events_unbound09:05:002
1776875994642,3cyclictest1813169-21kworker/u8:2+flush-179:008:15:162
1776866994641,4cyclictest1872589-21ntpq08:40:160
1776866994633,1cyclictest1581588-1kworker/0:0H+kblockd09:34:210
18206342450,1sleep20-21swapper/207:50:152
18035742450,1chrt1803568-21snmp_wlanswitch07:35:010
1776879994541,3cyclictest2030354-21kworker/u8:2+events_unbound11:30:203
1776879994541,3cyclictest1813169-21kworker/u8:2+events_unbound09:05:273
1776879994541,3cyclictest1813169-21kworker/u8:2+events_unbound08:00:503
1776879994541,2cyclictest2071060-21kworker/u8:1+events_unbound12:10:153
1776879994540,4cyclictest1968738-21kworker/u8:0+events_unbound11:00:133
1776879994540,4cyclictest1968738-21kworker/u8:0+events_unbound11:00:133
1776879994540,4cyclictest1848942-21kworker/u8:0+events_unbound08:25:123
1776872994539,3cyclictest1823989-21latency_hist07:55:011
1776872994536,8cyclictest1994594-21/usr/share/muni10:40:201
1776866994543,1cyclictest1876282-21chrome08:45:030
1776879994441,2cyclictest1886015-21kworker/u8:3+events_unbound09:35:223
1776879994441,2cyclictest1813169-21kworker/u8:2+flush-179:008:20:243
1776879994431,12cyclictest1797922-21kworker/u8:4+events_unbound08:09:383
1776879994417,26cyclictest3125724-21ThreadPoolForeg12:33:013
177687599447,36cyclictest3125728-13Compositor11:01:402
177687599447,36cyclictest3125728-13Compositor11:01:402
1776875994442,1cyclictest2062005-21kworker/2:0+pm12:26:192
1776875994440,3cyclictest1893466-21kworker/u8:4+flush-179:009:05:292
1776872994430,11cyclictest2045932-21/usr/share/muni11:30:031
1776866994439,4cyclictest1989356-21/usr/share/muni10:35:060
1776866994437,5cyclictest247563-13Compositor07:20:120
1776879994339,3cyclictest1886015-21kworker/u8:3+flush-179:009:24:353
1776879994336,5cyclictest1917506-21kworker/u8:4+flush-179:010:23:253
1776875994338,4cyclictest2030354-21kworker/u8:2+flush-179:011:35:122
1776875994338,3cyclictest2030354-21kworker/u8:2+flush-179:012:15:182
1776875994329,13cyclictest1831976-21kworker/2:1+pm10:56:462
1776875994320,4cyclictest2075516-21kworker/u8:3+flush-179:012:30:052
1776866994340,2cyclictest1886015-21kworker/u8:3+flush-179:009:21:410
1776866994340,2cyclictest1581588-1kworker/0:0H+kblockd08:38:160
1776866994337,4cyclictest2050786-21latency_hist11:35:000
1776866994332,2cyclictest1581588-1kworker/0:0H+kblockd12:31:240
1776879994239,2cyclictest1813169-21kworker/u8:2+flush-179:008:45:373
1776879994238,3cyclictest1756106-21kworker/u8:0+events_unbound07:40:083
1776879994231,10cyclictest1756106-21kworker/u8:0+flush-179:007:37:253
1776875994238,3cyclictest1803543-21/usr/share/muni07:35:082
1776875994238,2cyclictest1831976-21kworker/2:1+pm09:42:232
1776875994235,5cyclictest1334497-21apache211:55:152
1776875994219,22cyclictest2007339-21kworker/u8:4+flush-179:011:50:432
1776872994238,2cyclictest2030354-21kworker/u8:2+flush-179:011:35:241
1776872994237,4cyclictest2014160-31munin-html10:55:361
1776872994237,4cyclictest1973775-21/usr/share/muni10:20:011
1776872994237,3cyclictest1982817-21kworker/u8:1+flush-179:011:05:121
1776872994236,4cyclictest2061306-21/usr/share/muni11:45:131
1776872994228,13cyclictest1623477-1kworker/1:0H+kblockd08:33:161
1776872994228,13cyclictest1623477-1kworker/1:0H+kblockd08:33:161
1776879994137,3cyclictest2075516-21kworker/u8:3+events_unbound12:20:273
1776879994137,3cyclictest2030354-21kworker/u8:2+flush-179:012:00:163
1776879994137,3cyclictest1917506-21kworker/u8:4+events_unbound09:40:213
1776879994136,4cyclictest1942563-21kworker/u8:0+events_unbound09:57:423
1776879994134,2cyclictest2030354-21kworker/u8:2+flush-179:012:15:313
1776875994138,2cyclictest1831976-21kworker/2:1+pm10:06:332
1776875994138,2cyclictest1734909-21kworker/2:2+pm07:15:002
1776875994137,3cyclictest2075516-21kworker/u8:3+flush-179:012:10:302
1776875994137,3cyclictest1797922-21kworker/u8:4+flush-179:008:00:402
1776875994135,5cyclictest1963480-21/usr/share/muni10:10:042
1776875994135,4cyclictest1906998-21/usr/share/muni09:15:162
1776875994110,30cyclictest1917506-21kworker/u8:4+efi_rts_wq09:48:002
1776872994137,3cyclictest2036961-21apt-get11:20:131
1776872994137,2cyclictest1876242-21ThreadPoolForeg08:45:021
1776872994134,6cyclictest1623477-1kworker/1:0H+kblockd07:32:491
1776866994136,4cyclictest1844942-21/usr/share/muni08:15:140
1776866994130,1cyclictest0-21swapper/010:40:040
1776879994037,2cyclictest1917506-21kworker/u8:4+events_unbound09:50:283
1776879994036,3cyclictest1880908-21kworker/u8:0+flush-179:009:10:113
1776879994035,4cyclictest1886015-21kworker/u8:3+flush-179:009:00:213
1776879994035,4cyclictest1394450-1kworker/3:0H+kblockd07:27:343
1776879994031,6cyclictest247516-21Chrome_ChildIOT11:55:283
1776875994037,2cyclictest2014110-21kworker/2:2+pm11:20:132
1776875994037,2cyclictest1831976-21kworker/2:1+pm10:53:352
1776875994037,2cyclictest1831976-21kworker/2:1+pm10:33:262
1776875994037,2cyclictest1831976-21kworker/2:1+pm10:22:272
1776875994037,2cyclictest1831976-21kworker/2:1+pm09:12:262
1776875994037,2cyclictest1831976-21kworker/2:1+pm08:30:392
1776875994037,2cyclictest1831976-21kworker/2:1+pm08:30:392
1776875994037,2cyclictest1831976-21kworker/2:1+pm08:05:572
1776875994036,3cyclictest2014110-21kworker/2:2+pm11:30:052
1776875994036,3cyclictest1942563-21kworker/u8:0+flush-179:009:50:232
1776875994036,3cyclictest1886015-21kworker/u8:3+flush-179:009:20:072
1776875994036,3cyclictest1766436-21kworker/u8:1+flush-179:007:25:202
1776875994035,4cyclictest1870054-31munin-html08:35:362
1776875994034,5cyclictest1922488-1kworker/2:0H+kblockd11:28:332
1776875994034,4cyclictest1788252-21/usr/share/muni07:20:182
1776875994033,5cyclictest2024470-31munin-html11:05:372
1776875994027,12cyclictest1886015-21kworker/u8:3+flush-179:009:35:322
1776875994017,22cyclictest3125721-21chrome12:01:062
177687599400,3cyclictest3125721-21chrome10:15:492
1776872994038,1cyclictest1623477-1kworker/1:0H+kblockd07:21:331
1776872994036,3cyclictest1968738-21kworker/u8:0+flush-179:010:45:401
1776872994036,3cyclictest1968738-21kworker/u8:0+flush-179:010:45:401
1776872994035,3cyclictest2102551-21latency_hist12:25:011
1776872994028,1cyclictest1260-21snmpd09:44:051
1776872994027,5cyclictest0-21swapper/112:14:511
1776872994026,13cyclictest1260-21snmpd09:28:461
1776866994035,4cyclictest1891086-31munin-graph08:56:080
1776866994032,5cyclictest1921205-21ntpq09:25:400
19697732390,1sleep10-21swapper/110:15:121
1776879993935,3cyclictest1917506-21kworker/u8:4+flush-179:010:38:233
1776875993937,1cyclictest2062005-21kworker/2:0+pm12:22:312
1776875993937,1cyclictest2014110-21kworker/2:2+pm11:18:332
1776875993937,1cyclictest1734909-21kworker/2:2+pm07:31:032
1776875993936,2cyclictest2062005-21kworker/2:0+pm12:39:332
1776875993936,2cyclictest1999799-21snmp_wanswitch.10:45:022
1776875993936,2cyclictest1999799-21snmp_wanswitch.10:45:012
1776875993936,2cyclictest1831976-21kworker/2:1+pm08:10:172
1776875993936,2cyclictest1734909-21kworker/2:2+pm07:15:492
1776875993935,3cyclictest2062005-21kworker/2:0+pm12:07:262
1776875993935,3cyclictest1831976-21kworker/2:1+pm08:42:402
1776875993935,2cyclictest1831976-21kworker/2:1+pm08:25:062
1776875993934,3cyclictest1831976-21kworker/2:1+pm09:30:142
1776875993934,3cyclictest1823640-21kworker/u8:1+events_unbound08:20:112
1776875993934,3cyclictest1101164-1kworker/2:2H+kblockd08:50:122
177687599390,38cyclictest3125648-13Chrome_IOThread11:11:052
1776872993937,2cyclictest2055980-21kworker/1:0+pm12:19:131
1776872993935,3cyclictest1766436-21kworker/u8:1+flush-179:007:26:251
1776872993934,3cyclictest2019736-31munin-graph11:01:561
1776872993934,3cyclictest2019736-31munin-graph11:01:561
1776872993928,3cyclictest1926421-1kworker/1:1H+kblockd09:51:581
1776866993936,2cyclictest1823640-21kworker/u8:1+flush-179:008:14:120
1776879993834,3cyclictest1942563-21kworker/u8:0+flush-179:010:00:343
1776879993834,3cyclictest1394450-1kworker/3:0H+kblockd10:25:343
1776879993834,3cyclictest1394450-1kworker/3:0H+kblockd07:20:043
1776879993834,2cyclictest1394450-1kworker/3:0H+kblockd11:43:283
1776879993834,2cyclictest1394450-1kworker/3:0H+kblockd08:35:043
1776875993835,2cyclictest1734909-21kworker/2:2+pm07:55:052
1776875993834,3cyclictest1831976-21kworker/2:1+pm10:00:592
1776875993834,2cyclictest1831976-21kworker/2:1+pm09:26:022
1776875993833,4cyclictest1968738-21kworker/u8:0+events_unbound10:30:012
177687599381,14cyclictest3125599-21python310:35:312
1776872993836,2cyclictest1823640-21kworker/u8:1+flush-179:008:40:101
1776872993834,3cyclictest1813169-21kworker/u8:2+flush-179:007:41:121
1776866993835,2cyclictest2040249-21kworker/0:2+pm12:23:030
1776866993835,2cyclictest1953075-21kworker/0:3+pm10:03:030
1776866993835,2cyclictest1581588-1kworker/0:0H+kblockd10:50:330
1776866993835,1cyclictest105470-21isc-net-000012:15:180
20613902370,1chrt2061325-21snmp_areswitch.11:45:010
1776879993733,3cyclictest1394450-1kworker/3:0H+kblockd11:18:583
1776875993735,1cyclictest1101164-1kworker/2:2H+kblockd08:58:542
1776875993732,3cyclictest1922488-1kworker/2:0H+kblockd09:55:062
177687599370,2cyclictest0-21swapper/210:41:022
1776872993734,2cyclictest1926421-1kworker/1:1H+kblockd11:55:111
1776872993734,2cyclictest1926421-1kworker/1:1H+kblockd11:19:341
1776872993733,3cyclictest2041707-21apt-get11:25:141
1776872993732,4cyclictest3125725-21ThreadPoolForeg07:17:451
1776872993732,4cyclictest2086352-31munin-html12:05:501
1776872993718,10cyclictest3125726-13Chrome_ChildIOT08:54:261
1776866993734,2cyclictest1882730-21apt-get08:50:140
1776866993734,2cyclictest1756106-21kworker/u8:0+flush-179:007:27:220
1776866993734,2cyclictest1581588-1kworker/0:0H+kblockd11:16:400
1776866993734,2cyclictest1581588-1kworker/0:0H+kblockd08:20:040
1776866993734,1cyclictest1581588-1kworker/0:0H+kblockd07:47:540
1776866993733,3cyclictest2060263-21munin-limits11:40:350
1776866993733,3cyclictest2030354-21kworker/u8:2+flush-179:012:14:460
1776866993732,4cyclictest1834446-21/usr/share/muni08:05:130
1776866993731,5cyclictest247561-21ThreadPoolForeg11:39:040
1776866993731,4cyclictest3125688-21Chrome_ChildIOT12:35:100
19860542360,1chrt1986055-21expr10:30:201
177687599361,14cyclictest247557-21chrome11:40:222
1776872993634,1cyclictest1623477-1kworker/1:0H+kblockd07:45:201
1776872993633,2cyclictest2081045-1kworker/1:2H+kblockd12:04:221
1776872993633,2cyclictest1926421-1kworker/1:1H+kblockd10:02:431
1776872993633,2cyclictest1926421-1kworker/1:1H+kblockd09:35:591
1776872993633,2cyclictest1813169-21kworker/u8:2+flush-179:008:10:061
1776872993633,2cyclictest1623477-1kworker/1:0H+kblockd09:05:301
1776872993633,2cyclictest1623477-1kworker/1:0H+kblockd08:35:241
1776872993633,2cyclictest1623477-1kworker/1:0H+kblockd08:29:331
1776872993633,2cyclictest1623477-1kworker/1:0H+kblockd08:08:161
1776872993633,2cyclictest1623477-1kworker/1:0H+kblockd07:56:021
1776872993632,3cyclictest2081045-1kworker/1:2H+kblockd12:32:331
1776872993632,3cyclictest1926421-1kworker/1:1H+kblockd11:14:171
1776872993632,3cyclictest1917506-21kworker/u8:4+flush-179:010:35:191
1776872993632,2cyclictest1926421-1kworker/1:1H+kblockd11:41:511
1776872993631,4cyclictest1901924-21/usr/share/muni09:10:021
1776872993631,3cyclictest2104021-21apt-get12:25:131
1776872993626,2cyclictest3125684-21Chrome_DevTools10:28:371
1776866993634,1cyclictest1581588-1kworker/0:0H+kblockd10:08:110
1776866993634,1cyclictest1581588-1kworker/0:0H+kblockd08:04:500
1776866993633,2cyclictest1581588-1kworker/0:0H+kblockd12:00:010
1776866993633,2cyclictest1581588-1kworker/0:0H+kblockd09:54:430
1776866993633,2cyclictest1581588-1kworker/0:0H+kblockd09:17:400
1776866993633,2cyclictest1581588-1kworker/0:0H+kblockd09:09:450
1776866993632,2cyclictest1581588-1kworker/0:0H+kblockd11:50:000
177686699360,35cyclictest3125728-13Compositor12:00:120
1776872993533,1cyclictest1926421-1kworker/1:1H+kblockd10:13:391
1776872993533,1cyclictest1926421-1kworker/1:1H+kblockd09:55:151
1776872993533,1cyclictest1623477-1kworker/1:0H+kblockd08:23:391
1776872993532,1cyclictest1623477-1kworker/1:0H+kblockd07:12:211
1776872993531,3cyclictest1623477-1kworker/1:0H+kblockd08:56:311
1776872993529,4cyclictest1908365-21ntpq09:15:161
1776872993525,9cyclictest2005038-21munin-update10:50:001
1776866993533,2cyclictest3125728-13Compositor10:25:160
1776866993533,1cyclictest1581588-1kworker/0:0H+kblockd12:28:590
1776866993533,1cyclictest1581588-1kworker/0:0H+kblockd11:26:530
1776866993533,1cyclictest1581588-1kworker/0:0H+kblockd11:13:380
1776866993533,1cyclictest1581588-1kworker/0:0H+kblockd11:09:310
1776866993533,1cyclictest1581588-1kworker/0:0H+kblockd08:32:120
1776866993533,1cyclictest1581588-1kworker/0:0H+kblockd08:32:110
1776866993533,1cyclictest1581588-1kworker/0:0H+kblockd07:44:050
1776866993533,1cyclictest1581588-1kworker/0:0H+kblockd07:18:420
1776866993532,2cyclictest3125624-21chromedriver10:32:000
1776866993532,2cyclictest1581588-1kworker/0:0H+kblockd11:21:510
1776866993532,2cyclictest1581588-1kworker/0:0H+kblockd09:43:480
1776866993532,2cyclictest1581588-1kworker/0:0H+kblockd07:10:050
1776866993530,3cyclictest3125627-21ChromeDriver00:55:190
1776866993520,14cyclictest1800016-21cat07:30:170
1776872993431,2cyclictest1623477-1kworker/1:0H+kblockd09:24:501
1776872993431,1cyclictest1926421-1kworker/1:1H+kblockd09:34:001
1776872993429,4cyclictest1808027-31munin-graph07:35:491
1776866993431,2cyclictest3125648-13Chrome_IOThread10:10:320
1776866993431,2cyclictest1581588-1kworker/0:0H+kblockd10:49:200
1776866993431,2cyclictest1581588-1kworker/0:0H+kblockd10:49:200
1776866993431,2cyclictest1581588-1kworker/0:0H+kblockd10:21:300
1776866993431,2cyclictest1581588-1kworker/0:0H+kblockd07:58:110
1776866993429,3cyclictest1931701-21munin-limits09:35:380
1776872993330,2cyclictest1823640-21kworker/u8:1+flush-179:008:01:271
1776872993329,2cyclictest2081045-1kworker/1:2H+kblockd12:39:071
1776872993229,2cyclictest1623477-1kworker/1:0H+kblockd09:01:531
1776866993230,1cyclictest1260-21snmpd10:16:190
1776872993130,1cyclictest1926421-1kworker/1:1H+kblockd10:06:301
1776866993028,1cyclictest1260-21snmpd09:10:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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