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2025-12-07 - 15:41
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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 Dec 07, 2025 12:45:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
18399272211168,32sleep30-21swapper/307:05:453
18399622209185,14sleep20-21swapper/207:06:082
18402342197172,14sleep10-21swapper/107:09:091
18401522193165,18sleep00-21swapper/007:08:040
212099221580,1sleep13125725-21ThreadPoolForeg11:40:041
1840506997875,2cyclictest1847589-21kworker/u8:4+events_unbound08:05:352
1840506997333,39cyclictest1939435-21snmp_wlanswitch08:45:012
1840506996864,3cyclictest1847589-21kworker/u8:4+events_unbound09:05:362
1840509996157,2cyclictest2126066-21snmp_ryswitch2.11:45:023
1840506996056,3cyclictest1782473-21kworker/u8:0+events_unbound07:25:312
184049899594,11cyclictest247560-21ThreadPoolForeg07:45:010
1840506995854,3cyclictest1971935-21kworker/u8:6+flush-179:009:20:292
1840506995853,3cyclictest1985004-21kworker/u8:1+events_unbound10:15:292
1840506995853,3cyclictest1985004-21kworker/u8:1+events_unbound10:15:292
1840506995853,3cyclictest1971935-21kworker/u8:6+events_unbound09:40:132
1840498995851,6cyclictest247561-21ThreadPoolForeg12:05:390
1840506995752,3cyclictest1845371-21kworker/u8:3+flush-179:007:30:162
1840506995735,21cyclictest3125724-21ThreadPoolForeg10:34:302
1840506995652,3cyclictest1949290-21kworker/u8:1+flush-179:008:55:152
1840506995652,2cyclictest2119819-21kworker/u8:4+flush-179:011:45:192
1840498995650,4cyclictest2161301-21kworker/u8:2+flush-179:012:20:300
1840498995650,4cyclictest2161301-21kworker/u8:2+flush-179:012:20:300
1840506995551,3cyclictest2092490-21kworker/u8:5+flush-179:011:15:102
1840506995551,3cyclictest2073979-21kworker/u8:0+events_unbound11:05:132
1840506995551,3cyclictest2063085-21kworker/u8:4+flush-179:010:45:262
1840506995550,3cyclictest1949474-21kworker/u8:3+events_unbound09:01:042
1840506995538,16cyclictest2098763-21kworker/u8:1+flush-179:011:25:412
1840503995549,5cyclictest3125688-21Chrome_ChildIOT07:50:251
1840503995549,5cyclictest3125688-21Chrome_ChildIOT07:50:251
1840506995449,4cyclictest2099480-21/usr/share/muni11:20:022
1840506995449,4cyclictest2073979-21kworker/u8:0+events_unbound12:00:422
1840509995349,3cyclictest2098763-21kworker/u8:1+flush-179:011:25:103
1840509995347,5cyclictest3125725-21ThreadPoolForeg08:28:303
1840506995350,2cyclictest2146411-21kworker/u8:1+flush-179:012:10:342
1840506995350,2cyclictest2109367-21kworker/u8:3+flush-179:011:40:222
1840506995349,3cyclictest2161301-21kworker/u8:2+flush-179:012:20:392
1840506995349,3cyclictest2161301-21kworker/u8:2+flush-179:012:20:392
1840506995346,5cyclictest247560-21ThreadPoolForeg09:15:132
1840506995248,3cyclictest1923148-21kworker/u8:2+flush-179:008:25:382
1840503995240,11cyclictest247560-21ThreadPoolForeg09:25:181
184049899521,49cyclictest3125630-13chrome11:19:590
1840509995147,3cyclictest1959397-31munin-html09:01:193
1840506995148,2cyclictest1847589-21kworker/u8:4+events_unbound08:15:362
1840506995146,3cyclictest2062585-21kworker/u8:2+flush-179:011:30:222
1840506995136,2cyclictest2167535-21kworker/2:2+pm12:30:052
1840509995046,3cyclictest1867174-21/usr/share/muni07:35:043
1840506995046,3cyclictest1847589-21kworker/u8:4+flush-179:007:50:142
1840506995046,3cyclictest1847589-21kworker/u8:4+flush-179:007:50:142
1840506995045,4cyclictest2177692-21/usr/share/muni12:35:092
1840506995045,3cyclictest2052029-21kworker/u8:3+events_unbound10:55:152
1840506995045,3cyclictest1959359-21kworker/u8:0+flush-179:010:05:012
18775892490,1chrt1877562-21Chrome_ChildIOT07:45:033
1840506994945,3cyclictest1985004-21kworker/u8:1+flush-179:009:45:182
1840506994945,3cyclictest1847589-21kworker/u8:4+flush-179:008:20:202
1840506994943,2cyclictest1872654-21kworker/u8:1+flush-179:007:40:222
1840506994843,4cyclictest2119819-21kworker/u8:4+flush-179:012:05:332
1840506994841,5cyclictest2052029-21kworker/u8:3+events_unbound10:50:212
1840503994843,4cyclictest2115365-21/usr/share/muni11:35:101
1840503994843,4cyclictest2110003-21/usr/share/muni11:30:021
1840503994832,14cyclictest368925-1kworker/1:1H+kblockd08:30:161
1840503994742,4cyclictest2157211-21/usr/share/muni12:15:051
1840498994743,2cyclictest1912639-21kworker/u8:1+flush-179:008:20:150
1840506994643,2cyclictest1881670-21kworker/u8:2+flush-179:008:00:362
1840506994642,2cyclictest1923148-21kworker/u8:2+events_unbound08:31:362
1840506994641,4cyclictest1971935-21kworker/u8:6+flush-179:009:55:452
1840503994643,2cyclictest1971935-21kworker/u8:6+flush-179:009:55:141
1840498994640,5cyclictest76405-21systemd-journal11:30:390
1840498994639,5cyclictest1892789-31munin-graph07:56:280
1840506994541,3cyclictest2073979-21kworker/u8:0+flush-179:012:15:302
1840506994541,3cyclictest2032056-21kworker/u8:0+flush-179:010:40:382
1840506994541,3cyclictest2032056-21kworker/u8:0+flush-179:010:35:182
1840506994541,3cyclictest1985004-21kworker/u8:1+flush-179:010:05:252
1840506994541,3cyclictest1985004-21kworker/u8:1+flush-179:009:35:172
1840506994541,3cyclictest1885221-21kworker/u8:3+events_unbound07:55:232
1840503994540,4cyclictest3125687-21ThreadPoolForeg07:25:251
1840503994534,10cyclictest368925-1kworker/1:1H+kblockd11:33:411
1840503994531,2cyclictest368925-1kworker/1:1H+kblockd10:36:541
1840503994520,13cyclictest3125728-13Compositor08:00:431
1840498994541,3cyclictest2052029-21kworker/u8:3+flush-179:010:50:140
1840498994541,3cyclictest1985004-21kworker/u8:1+events_unbound10:00:080
1840498994539,4cyclictest1944822-21/usr/share/muni08:50:040
1840498994537,6cyclictest1924035-21/usr/share/muni08:30:240
1840509994440,3cyclictest76405-21systemd-journal10:05:313
184050999443,40cyclictest247557-21chrome09:57:233
1840506994441,2cyclictest2073979-21kworker/u8:0+flush-179:011:00:082
1840506994440,3cyclictest1824907-21kworker/u8:2+flush-179:007:10:222
1840506994440,3cyclictest1782473-21kworker/u8:0+flush-179:007:45:152
1840506994438,4cyclictest1933671-31munin-graph08:36:372
1840498994435,7cyclictest2006498-21cat09:50:010
184049899441,41cyclictest247557-21chrome10:45:300
1840509994340,2cyclictest2146411-21kworker/u8:1+flush-179:012:25:393
1840509994338,4cyclictest2136674-21/usr/share/muni11:55:023
1840506994340,2cyclictest2135777-21kworker/u8:1+flush-179:011:55:172
1840506994340,2cyclictest2037208-21kworker/u8:3+flush-179:010:20:202
1840506994338,3cyclictest2032056-21kworker/u8:0+events_unbound10:25:032
1840506994329,13cyclictest1847589-21kworker/u8:4+events_unbound09:12:272
1840503994340,2cyclictest2098763-21kworker/u8:1+events_unbound11:20:251
1840503994339,3cyclictest1913154-21munin-limits08:16:141
1840498994339,3cyclictest1883056-21/usr/share/muni07:50:180
1840498994339,3cyclictest1883056-21/usr/share/muni07:50:170
1840498994338,3cyclictest1912639-21kworker/u8:1+flush-179:008:41:350
1840506994239,3cyclictest2073979-21kworker/u8:0+flush-179:011:35:202
1840506994239,2cyclictest2119819-21kworker/u8:4+events_unbound12:25:072
1840506994238,2cyclictest1938853-21kworker/2:2+pm08:54:252
1840506994237,3cyclictest1881670-21kworker/u8:2+flush-179:008:10:272
1840503994238,3cyclictest2141352-31munin-graph11:56:291
1840503994229,1cyclictest1260-21snmpd11:54:211
1840503994225,3cyclictest3125725-21ThreadPoolForeg11:03:001
1840498994238,3cyclictest1971935-21kworker/u8:6+events_unbound09:20:330
1840498994236,4cyclictest3125687-21ThreadPoolForeg11:56:350
1840509994131,9cyclictest2073979-21kworker/u8:0+flush-179:012:00:323
1840506994137,3cyclictest1912639-21kworker/u8:1+flush-179:008:40:152
1840506994137,3cyclictest1845371-21kworker/u8:3+flush-179:007:19:492
1840506994137,3cyclictest1845371-21kworker/u8:3+events_unbound07:20:042
1840506994135,4cyclictest2135777-21kworker/u8:1+flush-179:011:53:232
1840503994139,2cyclictest2119819-21kworker/u8:4+flush-179:012:25:351
1840503994137,3cyclictest1964839-21latency_hist09:10:011
1840503994133,6cyclictest247560-21ThreadPoolForeg10:05:391
1840503994129,1cyclictest1260-21snmpd11:49:471
1840503994123,6cyclictest1990484-31munin-html09:31:181
184050399411,38cyclictest3125727-21ThreadPoolForeg11:15:131
1840498994137,3cyclictest1782473-21kworker/u8:0+events_unbound07:10:230
1840498994135,4cyclictest2052029-21kworker/u8:3+events_unbound11:00:320
1840498994135,4cyclictest1847589-21kworker/u8:4+events_unbound09:14:290
1840498994134,5cyclictest2099490-21/usr/share/muni11:20:040
1840498994134,5cyclictest2088387-31munin-html11:06:260
1840498994134,5cyclictest1970583-21/usr/share/muni09:15:120
1840509994036,3cyclictest2033739-21apt-get10:15:123
1840509994036,3cyclictest2033739-21apt-get10:15:113
1840509994035,4cyclictest1966766-21apt-get09:10:143
1840506994037,2cyclictest1853058-21kworker/2:0+pm07:38:342
1840506994036,3cyclictest1985004-21kworker/u8:1+events_unbound09:33:212
1840506994036,3cyclictest1971935-21kworker/u8:6+events_unbound09:51:012
1840503994028,2cyclictest1260-21snmpd10:49:011
1840503994028,1cyclictest1260-21snmpd10:50:431
1840503994025,2cyclictest3125725-21ThreadPoolForeg08:43:281
1840509993936,2cyclictest1223167-1kworker/3:1H+kblockd07:52:363
1840509993936,2cyclictest1223167-1kworker/3:1H+kblockd07:52:353
1840509993935,3cyclictest1935590-21apt-get08:40:163
1840509993935,2cyclictest1223167-1kworker/3:1H+kblockd07:30:473
1840509993934,4cyclictest3125725-21ThreadPoolForeg11:37:493
1840509993933,5cyclictest3125724-21ThreadPoolForeg10:20:273
1840509993925,13cyclictest247561-21ThreadPoolForeg12:08:463
1840506993936,2cyclictest2063573-21kworker/2:0+pm11:11:102
1840506993936,2cyclictest1985478-21kworker/2:2+pm10:13:072
1840503993935,2cyclictest368925-1kworker/1:1H+kblockd08:38:371
1840503993934,4cyclictest247515-21ThreadPoolForeg08:55:251
1840503993934,4cyclictest2088961-21/usr/share/muni11:10:031
1840503993933,5cyclictest2147028-21/usr/share/muni12:05:051
1840503993932,6cyclictest368925-1kworker/1:1H+kblockd09:46:411
1840503993926,2cyclictest3125648-13Chrome_IOThread12:12:561
1840503993926,2cyclictest1260-21snmpd07:15:571
1840503993923,3cyclictest3125725-21ThreadPoolForeg10:23:261
1840503993922,6cyclictest3125688-21Chrome_ChildIOT12:34:061
1840498993936,2cyclictest2105266-21kworker/0:1+pm11:26:070
1840498993935,3cyclictest3125599-21python310:25:020
1840498993935,3cyclictest1847589-21kworker/u8:4+flush-179:009:00:020
1840498993935,2cyclictest81975-1kworker/0:0H+kblockd08:45:090
1840498993935,2cyclictest1847589-21kworker/u8:4+flush-179:007:35:370
1840498993934,4cyclictest247561-21ThreadPoolForeg12:28:190
1840498993934,3cyclictest81975-1kworker/0:0H+kblockd09:32:390
1840498993934,3cyclictest2052029-21kworker/u8:3+flush-179:010:40:280
1840498993933,5cyclictest1985004-21kworker/u8:1+flush-179:010:35:320
1840509993835,2cyclictest3125728-13Compositor07:15:123
1840509993835,2cyclictest2021861-21kworker/u8:2+flush-179:010:25:143
1840509993835,2cyclictest1995570-1kworker/3:2H+kblockd11:15:123
1840509993835,2cyclictest1995570-1kworker/3:2H+kblockd11:14:203
1840509993835,2cyclictest1223167-1kworker/3:1H+kblockd08:17:563
1840509993832,4cyclictest3125688-21Chrome_ChildIOT08:05:103
1840509993831,6cyclictest247560-21ThreadPoolForeg07:58:233
1840506993835,2cyclictest1847589-21kworker/u8:4+flush-179:009:25:102
1840503993834,3cyclictest368925-1kworker/1:1H+kblockd09:38:491
1840503993834,3cyclictest1959438-31munin-graph09:02:371
1840503993834,2cyclictest368925-1kworker/1:1H+kblockd10:03:061
1840503993834,2cyclictest368925-1kworker/1:1H+kblockd08:27:331
1840503993833,4cyclictest368925-1kworker/1:1H+kblockd08:45:061
1840503993833,4cyclictest247516-21Chrome_ChildIOT07:45:341
1840503993833,3cyclictest2021861-21kworker/u8:2+flush-179:010:27:471
1840503993825,2cyclictest0-21swapper/108:51:171
1840503993823,14cyclictest3125627-21ChromeDriver00:55:191
1840498993836,1cyclictest81975-1kworker/0:0H+kblockd07:20:180
1840498993835,2cyclictest81975-1kworker/0:0H+kblockd09:39:440
1840498993835,2cyclictest2031996-21kworker/0:1+pm10:27:430
1840498993835,2cyclictest1985508-21kworker/0:0+pm09:28:450
1840498993834,3cyclictest3125629-21e21169fc69a4c6711:49:460
1840498993834,2cyclictest81975-1kworker/0:0H+kblockd08:00:050
1840498993834,2cyclictest2125397-1kworker/0:2H+kblockd12:33:060
1840498993832,5cyclictest2132672-21ntpq11:50:180
184049899380,36cyclictest247557-21chrome11:10:180
1840509993734,2cyclictest2146411-21kworker/u8:1+flush-179:012:14:353
1840509993734,2cyclictest2114835-1kworker/3:0H+kblockd11:32:553
1840509993734,2cyclictest1223167-1kworker/3:1H+kblockd07:43:393
1840509993733,3cyclictest2120759-21/usr/share/muni11:40:013
1840509993733,3cyclictest2085196-21diskstats11:05:153
1840509993733,3cyclictest1995570-1kworker/3:2H+kblockd10:51:593
1840509993731,5cyclictest247515-21ThreadPoolForeg09:09:033
1840509993731,4cyclictest247560-21ThreadPoolForeg08:55:253
184050399374,32cyclictest3125630-13chrome07:40:191
1840503993735,1cyclictest1814193-21kworker/1:2+pm08:22:381
1840503993734,2cyclictest368925-1kworker/1:1H+kblockd10:15:351
1840503993734,2cyclictest368925-1kworker/1:1H+kblockd10:15:341
1840503993734,2cyclictest2146435-1kworker/1:0H+kblockd12:36:351
1840503993734,2cyclictest2146435-1kworker/1:0H+kblockd12:22:311
1840503993734,2cyclictest2146435-1kworker/1:0H+kblockd12:22:311
1840503993734,2cyclictest1985004-21kworker/u8:1+flush-179:010:10:221
1840503993731,5cyclictest3125728-13Compositor09:11:261
1840503993725,2cyclictest3125708-13Chrome_ChildIOT07:10:491
1840503993724,3cyclictest247561-21ThreadPoolForeg09:15:301
1840498993734,2cyclictest81975-1kworker/0:0H+kblockd09:05:370
1840498993734,2cyclictest2125397-1kworker/0:2H+kblockd12:16:290
1840498993734,2cyclictest1814737-21kworker/0:1+pm07:44:350
1840498993733,3cyclictest2021861-21kworker/u8:2+flush-179:010:30:130
1840498993733,2cyclictest81975-1kworker/0:0H+kblockd09:01:500
1840498993732,3cyclictest81975-1kworker/0:0H+kblockd09:57:390
1840498993731,4cyclictest1866933-21latency_hist07:35:010
1840509993634,1cyclictest1223167-1kworker/3:1H+kblockd09:19:283
1840509993633,2cyclictest2114835-1kworker/3:0H+kblockd12:22:143
1840509993633,2cyclictest2114835-1kworker/3:0H+kblockd12:22:143
1840509993633,2cyclictest1995570-1kworker/3:2H+kblockd11:04:583
1840509993633,2cyclictest1995570-1kworker/3:2H+kblockd09:40:583
1840509993633,2cyclictest1223167-1kworker/3:1H+kblockd08:30:283
1840509993632,3cyclictest1995570-1kworker/3:2H+kblockd10:48:263
1840509993632,2cyclictest1995570-1kworker/3:2H+kblockd10:40:523
1840509993626,3cyclictest1913858-21/usr/share/muni08:20:103
1840509993624,8cyclictest247562-13Chrome_ChildIOT10:35:043
1840509993622,3cyclictest3125648-13Chrome_IOThread09:28:283
184050999361,34cyclictest247557-21chrome08:02:333
1840503993634,1cyclictest368925-1kworker/1:1H+kblockd08:10:051
1840503993634,1cyclictest368925-1kworker/1:1H+kblockd07:21:421
1840503993633,2cyclictest368925-1kworker/1:1H+kblockd11:06:031
1840503993633,2cyclictest368925-1kworker/1:1H+kblockd09:21:381
1840503993633,2cyclictest2146435-1kworker/1:0H+kblockd12:01:361
1840498993634,1cyclictest81975-1kworker/0:0H+kblockd10:57:570
1840498993633,2cyclictest81975-1kworker/0:0H+kblockd10:12:250
1840498993633,2cyclictest81975-1kworker/0:0H+kblockd07:19:030
1840498993633,2cyclictest2105266-21kworker/0:1+pm12:00:540
1840498993632,3cyclictest2146411-21kworker/u8:1+events_unbound12:35:050
1840498993632,2cyclictest2125397-1kworker/0:2H+kblockd12:13:490
1840509993533,1cyclictest1995570-1kworker/3:2H+kblockd10:11:363
1840509993533,1cyclictest1995570-1kworker/3:2H+kblockd09:52:133
1840509993533,1cyclictest1223167-1kworker/3:1H+kblockd08:45:403
1840509993532,2cyclictest2114835-1kworker/3:0H+kblockd12:38:533
1840509993532,2cyclictest1223167-1kworker/3:1H+kblockd09:35:223
1840509993532,2cyclictest1223167-1kworker/3:1H+kblockd08:36:403
1840509993531,3cyclictest1995570-1kworker/3:2H+kblockd10:32:493
184050999350,34cyclictest2104551-21munin-run11:25:003
1840503993532,2cyclictest368925-1kworker/1:1H+kblockd10:40:311
1840503993531,3cyclictest1985004-21kworker/u8:1+flush-179:010:33:261
1840503993531,2cyclictest368925-1kworker/1:1H+kblockd09:43:341
1840503993531,2cyclictest368925-1kworker/1:1H+kblockd07:55:161
1840498993533,1cyclictest81975-1kworker/0:0H+kblockd08:18:470
1840498993533,1cyclictest2125397-1kworker/0:2H+kblockd11:43:530
1840498993528,5cyclictest247560-21ThreadPoolForeg08:05:290
1840509993432,1cyclictest2114835-1kworker/3:0H+kblockd11:52:223
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*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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