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2025-10-20 - 05:01
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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 Oct 19, 2025 12:44:38)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2630532214188,16sleep00-21swapper/007:08:120
2610622213173,11sleep10-21swapper/107:05:241
2630342197173,14sleep20-21swapper/207:08:022
2630712196172,14sleep30-21swapper/307:08:283
263441991000,99cyclictest362357-21/usr/share/muni08:45:013
263431996056,3cyclictest424085-21kworker/u8:2+flush-179:010:40:120
263433995753,3cyclictest568706-21kworker/u8:1+events_unbound12:17:031
263433995745,11cyclictest237100-21kworker/u8:1+events_unbound07:15:031
263433995652,3cyclictest361692-21kworker/u8:0+events_unbound09:40:111
263433995652,3cyclictest351566-21kworker/u8:2+events_unbound09:05:101
263433995652,3cyclictest351566-21kworker/u8:2+events_unbound09:05:091
263433995551,2cyclictest300801-21snmp_wlanpowerc07:45:011
263441995449,4cyclictest247515-21ThreadPoolForeg12:25:093
263431995450,3cyclictest475879-21kworker/u8:4+flush-179:010:50:360
263431995450,3cyclictest475879-21kworker/u8:4+events_unbound11:15:150
2764132530,1chrt276412-21apache_accesses07:20:143
263433995349,3cyclictest552495-21kworker/u8:4+flush-179:012:00:411
263433995349,3cyclictest552495-21kworker/u8:4+flush-179:012:00:411
263433995349,3cyclictest496463-21kworker/u8:0+events_unbound11:15:441
263433995249,2cyclictest496463-21kworker/u8:0+flush-179:011:45:121
263431995248,3cyclictest361692-21kworker/u8:0+events_unbound10:15:290
263433995148,2cyclictest351566-21kworker/u8:2+events_unbound08:44:251
263431995148,2cyclictest336251-21kworker/u8:1+flush-179:008:55:290
263431995148,2cyclictest336251-21kworker/u8:1+flush-179:008:55:290
263431995147,3cyclictest382476-21kworker/u8:3+flush-179:009:40:270
263431995046,3cyclictest361692-21kworker/u8:0+flush-179:008:45:190
263441994932,16cyclictest3817259-1kworker/3:1H+kblockd12:10:583
263436994943,4cyclictest589727-21/usr/share/muni12:25:152
263436994918,29cyclictest548236-21chrome11:45:022
263433994946,2cyclictest351566-21kworker/u8:2+flush-179:008:50:231
263433994946,2cyclictest316317-21snmp_ryswitch2.08:00:031
263431994944,3cyclictest382476-21kworker/u8:3+flush-179:009:05:380
263431994944,3cyclictest382476-21kworker/u8:3+flush-179:009:05:380
263431994943,4cyclictest439923-21munin-update10:00:310
263436994834,2cyclictest501949-21kworker/2:0+pm11:14:562
263436994834,13cyclictest424085-21kworker/u8:2+flush-179:010:35:452
263436994828,19cyclictest449827-21kworker/u8:3+flush-179:010:45:052
263433994845,2cyclictest325838-21kworker/u8:2+flush-179:008:10:271
263433994845,2cyclictest274573-21kworker/u8:3+events_unbound07:44:271
263433994844,3cyclictest568706-21kworker/u8:1+flush-179:012:12:101
263431994845,2cyclictest382476-21kworker/u8:3+flush-179:009:46:080
263431994844,3cyclictest284760-21kworker/u8:4+flush-179:008:00:220
263441994742,3cyclictest237100-21kworker/u8:1+events_unbound07:10:303
263436994743,3cyclictest563083-21kworker/u8:3+flush-179:012:00:262
263436994743,3cyclictest563083-21kworker/u8:3+flush-179:012:00:262
263436994743,3cyclictest351805-21kworker/u8:4+flush-179:008:40:152
263433994743,3cyclictest475879-21kworker/u8:4+events_unbound11:10:241
263431994743,3cyclictest272802-21kworker/u8:2+flush-179:007:20:110
263431994742,4cyclictest424085-21kworker/u8:2+events_unbound10:20:150
263441994641,4cyclictest76405-21systemd-journal08:00:003
263436994641,3cyclictest491933-21/usr/share/muni10:50:052
263433994643,2cyclictest424085-21kworker/u8:2+events_unbound09:45:231
263433994641,2cyclictest496463-21kworker/u8:0+events_unbound11:05:091
263433994636,9cyclictest449827-21kworker/u8:3+flush-179:010:28:541
263431994642,3cyclictest470646-21kworker/u8:1+flush-179:010:30:370
263431994642,3cyclictest274573-21kworker/u8:3+flush-179:007:27:290
263431994629,16cyclictest263536-21/usr/share/muni07:10:020
263441994540,3cyclictest486576-21snmp_areswitch.10:45:013
263433994542,2cyclictest585999-21kworker/u8:2+events_unbound12:32:331
263433994542,2cyclictest382476-21kworker/u8:3+flush-179:009:37:031
263433994542,2cyclictest274573-21kworker/u8:3+events_unbound07:55:281
263433994534,10cyclictest284760-21kworker/u8:4+flush-179:007:31:541
26343399452,42cyclictest579200-21kworker/1:1-mm_percpu_wq12:22:191
263431994539,5cyclictest439084-31munin-html09:55:330
263441994441,2cyclictest532650-21kworker/u8:1+flush-179:011:35:083
263441994439,3cyclictest424085-21kworker/u8:2+flush-179:009:50:343
263441994438,4cyclictest382933-21/usr/share/muni09:05:023
263441994438,4cyclictest382933-21/usr/share/muni09:05:023
263433994441,2cyclictest424085-21kworker/u8:2+flush-179:010:15:151
263433994441,2cyclictest336251-21kworker/u8:1+events_unbound08:27:471
263433994440,2cyclictest449827-21kworker/u8:3+events_unbound10:45:201
263431994441,2cyclictest532650-21kworker/u8:1+flush-179:011:55:510
263431994438,5cyclictest408144-21ntpq09:25:330
263436994339,2cyclictest486580-21snmp_ryswitch2.10:45:022
263436994338,4cyclictest336251-21kworker/u8:1+flush-179:008:30:102
263433994340,2cyclictest578865-21kworker/u8:0+flush-179:012:36:191
263433994339,3cyclictest4024370-21apache210:35:221
263433994338,2cyclictest424085-21kworker/u8:2+events_unbound09:50:241
263431994340,2cyclictest336251-21kworker/u8:1+flush-179:009:10:300
263431994339,3cyclictest496463-21kworker/u8:0+flush-179:011:20:090
263431994339,3cyclictest496463-21kworker/u8:0+flush-179:011:20:090
263431994339,3cyclictest496463-21kworker/u8:0+events_unbound11:43:340
263441994239,2cyclictest3817259-1kworker/3:1H+kblockd09:35:043
263436994238,2cyclictest496463-21kworker/u8:0+flush-179:011:35:372
263436994238,2cyclictest409481-21kworker/2:1+pm09:30:322
263436994212,29cyclictest0-21swapper/207:15:392
26343699420,39cyclictest362394-21snmp_wlanswitch08:45:012
263433994240,2cyclictest424085-21kworker/u8:2+events_unbound10:08:421
263433994240,2cyclictest424085-21kworker/u8:2+events_unbound10:08:421
263433994239,3cyclictest305639-21kworker/u8:1+events_unbound07:54:441
263433994239,2cyclictest578865-21kworker/u8:0+events_unbound12:25:181
263433994238,3cyclictest557949-31munin-graph11:50:561
263433994238,3cyclictest475879-21kworker/u8:4+events_unbound10:41:461
263433994238,3cyclictest227649-21kworker/u8:0+flush-179:007:28:251
263433994230,11cyclictest361692-21kworker/u8:0+flush-179:008:47:261
263431994238,3cyclictest496463-21kworker/u8:0+flush-179:011:45:100
263431994238,3cyclictest475879-21kworker/u8:4+flush-179:011:05:210
263431994236,4cyclictest284760-21kworker/u8:4+flush-179:008:05:310
263436994135,5cyclictest368941-21ntpq08:50:132
263436994134,6cyclictest584638-21/usr/share/muni12:20:052
263433994138,2cyclictest336251-21kworker/u8:1+events_unbound08:35:011
263431994138,2cyclictest585999-21kworker/u8:2+flush-179:012:25:130
263431994136,4cyclictest285393-21/usr/share/muni07:30:140
263431994136,4cyclictest247560-21ThreadPoolForeg09:00:370
263441994036,3cyclictest424085-21kworker/u8:2+flush-179:010:00:213
263441994034,4cyclictest548224-21CacheThread_Blo11:45:003
263441994030,9cyclictest105470-21isc-net-000007:35:273
263436994038,1cyclictest347179-21kworker/2:2+pm09:03:272
263436994038,1cyclictest274685-21kworker/2:0+pm07:50:282
263436994037,2cyclictest409481-21kworker/2:1+pm10:08:122
263436994037,2cyclictest409481-21kworker/2:1+pm10:08:122
263436994037,2cyclictest347179-21kworker/2:2+pm09:25:122
263436994037,2cyclictest108521-1kworker/2:2H+kblockd07:46:162
263436994036,3cyclictest409481-21kworker/2:1+pm10:21:012
263436994036,3cyclictest336251-21kworker/u8:1+flush-179:008:18:592
263436994036,2cyclictest274685-21kworker/2:0+pm08:09:002
263433994037,2cyclictest405589-21kworker/u8:2+events_unbound09:25:241
263433994036,3cyclictest424085-21kworker/u8:2+flush-179:011:40:331
263433994031,9cyclictest331036-21kworker/u8:3+events_unbound08:31:431
263431994037,2cyclictest361692-21kworker/u8:0+flush-179:010:07:420
263431994037,2cyclictest361692-21kworker/u8:0+flush-179:010:07:420
263431994037,2cyclictest227649-21kworker/u8:0+flush-179:007:35:210
263431994036,3cyclictest475879-21kworker/u8:4+events_unbound11:10:130
263431994036,3cyclictest336251-21kworker/u8:1+flush-179:009:35:370
263441993937,1cyclictest335141-21kworker/3:0+pm10:13:473
263441993935,3cyclictest325831-21kworker/u8:1+events_unbound08:10:143
263436993937,1cyclictest514750-21kworker/2:1+pm12:07:142
263436993937,1cyclictest274685-21kworker/2:0+pm08:25:342
263436993937,1cyclictest274685-21kworker/2:0+pm08:00:202
263436993936,2cyclictest514750-21kworker/2:1+pm11:31:082
263436993936,2cyclictest514750-21kworker/2:1+pm11:29:512
263436993936,2cyclictest409481-21kworker/2:1+pm10:30:042
263436993936,2cyclictest409481-21kworker/2:1+pm10:26:242
263436993936,2cyclictest409481-21kworker/2:1+pm10:17:362
263436993936,2cyclictest409481-21kworker/2:1+pm10:00:042
263436993936,2cyclictest409481-21kworker/2:1+pm09:36:142
263436993936,1cyclictest501949-21kworker/2:0+pm11:00:162
263436993935,3cyclictest496463-21kworker/u8:0+flush-179:011:40:462
263436993935,3cyclictest409481-21kworker/2:1+pm09:55:032
263436993935,3cyclictest409481-21kworker/2:1+pm09:54:402
263433993937,2cyclictest331036-21kworker/u8:3+events_unbound08:17:001
263433993937,1cyclictest305910-21kworker/1:0+pm09:13:491
263433993936,2cyclictest449827-21kworker/u8:3+flush-179:010:55:301
263433993936,2cyclictest424085-21kworker/u8:2+events_unbound11:33:151
263433993936,2cyclictest336251-21kworker/u8:1+events_unbound08:20:101
263433993935,3cyclictest325831-21kworker/u8:1+flush-179:008:06:491
263431993936,3cyclictest604405-21kworker/u8:3+flush-179:012:39:390
263431993934,4cyclictest475879-21kworker/u8:4+events_unbound10:35:400
263441993835,2cyclictest496463-21kworker/u8:0+flush-179:011:50:143
263441993835,2cyclictest351805-21kworker/u8:4+flush-179:008:40:163
263441993835,2cyclictest340854-31munin-html08:20:363
263441993835,2cyclictest263266-21kworker/3:3+pm08:39:383
263441993834,3cyclictest284360-21munin-limits07:25:333
263441993831,5cyclictest517294-21/usr/share/muni11:15:143
263441993829,9cyclictest1260-21snmpd12:05:013
263436993836,1cyclictest570490-21kworker/2:2+pm12:31:472
263436993836,1cyclictest514750-21kworker/2:1+pm11:51:392
263436993836,1cyclictest409481-21kworker/2:1+pm10:14:442
263436993836,1cyclictest347179-21kworker/2:2+pm09:07:382
263436993836,1cyclictest347179-21kworker/2:2+pm09:07:382
263436993836,1cyclictest274685-21kworker/2:0+pm07:34:142
263436993836,1cyclictest274685-21kworker/2:0+pm07:24:202
263436993835,2cyclictest514750-21kworker/2:1+pm11:19:582
263436993835,2cyclictest347179-21kworker/2:2+pm09:18:072
263436993835,2cyclictest347179-21kworker/2:2+pm09:10:002
263436993835,2cyclictest237343-21kworker/2:3+pm07:15:002
263436993834,3cyclictest424723-21/usr/share/muni09:45:082
263436993834,2cyclictest514750-21kworker/2:1+pm11:59:102
26343699382,2cyclictest247447-21ChromeDriver00:55:192
263433993836,2cyclictest496463-21kworker/u8:0+events_unbound11:36:161
263433993836,2cyclictest336251-21kworker/u8:1+events_unbound09:34:181
263433993836,1cyclictest305910-21kworker/1:0+pm11:55:131
263433993835,2cyclictest279843-21kworker/u8:1+events_unbound07:23:411
263433993833,4cyclictest529146-21apt-get11:25:161
263431993835,2cyclictest247447-21ChromeDriver00:55:190
263431993835,2cyclictest191rcuc/010:55:360
263431993834,3cyclictest284760-21kworker/u8:4+flush-179:007:45:290
263431993831,5cyclictest311156-21/usr/share/muni07:55:050
263431993825,12cyclictest1260-21snmpd10:46:490
263441993735,1cyclictest460480-21kworker/3:2+pm11:11:173
263441993734,2cyclictest3817259-1kworker/3:1H+kblockd11:05:353
263441993734,2cyclictest3817259-1kworker/3:1H+kblockd08:59:233
263441993734,2cyclictest3817259-1kworker/3:1H+kblockd08:59:233
263441993733,3cyclictest419546-21/usr/share/muni09:40:033
263441993733,3cyclictest336251-21kworker/u8:1+flush-179:009:10:393
263436993736,1cyclictest570490-21kworker/2:2+pm12:15:062
263436993735,1cyclictest570490-21kworker/2:2+pm12:11:252
263436993735,1cyclictest501949-21kworker/2:0+pm11:06:102
263436993735,1cyclictest347179-21kworker/2:2+pm08:36:232
263436993735,1cyclictest274685-21kworker/2:0+pm07:56:152
263436993735,1cyclictest274685-21kworker/2:0+pm07:41:242
263436993734,2cyclictest284760-21kworker/u8:4+flush-179:007:35:182
263436993734,2cyclictest108521-1kworker/2:2H+kblockd09:24:132
263436993733,3cyclictest247560-21ThreadPoolForeg08:20:382
263436993730,6cyclictest247516-21Chrome_ChildIOT07:25:082
263433993735,2cyclictest361692-21kworker/u8:0+events_unbound10:11:221
263433993734,2cyclictest475879-21kworker/u8:4+events_unbound11:02:381
263433993734,2cyclictest336251-21kworker/u8:1+events_unbound08:55:281
263433993734,2cyclictest336251-21kworker/u8:1+events_unbound08:55:281
263433993733,3cyclictest475879-21kworker/u8:4+flush-179:010:50:231
263433993733,3cyclictest424085-21kworker/u8:2+flush-179:011:21:021
263433993733,3cyclictest424085-21kworker/u8:2+flush-179:011:21:021
263433993733,3cyclictest336251-21kworker/u8:1+flush-179:009:00:181
263431993734,2cyclictest424085-21kworker/u8:2+flush-179:009:50:220
263431993734,2cyclictest2819218-1kworker/0:1H+kblockd11:37:320
263431993734,2cyclictest2819218-1kworker/0:1H+kblockd10:11:100
263431993734,2cyclictest2819218-1kworker/0:1H+kblockd08:19:290
263431993733,3cyclictest449827-21kworker/u8:3+flush-179:010:25:160
263431993733,3cyclictest331036-21kworker/u8:3+flush-179:008:25:310
263431993730,2cyclictest361692-21kworker/u8:0+flush-179:008:41:030
263441993634,1cyclictest532542-21kworker/3:1+pm12:39:333
263441993634,1cyclictest3817259-1kworker/3:1H+kblockd12:21:403
263441993634,1cyclictest3817259-1kworker/3:1H+kblockd08:54:113
263441993634,1cyclictest3817259-1kworker/3:1H+kblockd08:26:423
263441993632,3cyclictest3817259-1kworker/3:1H+kblockd09:25:353
263441993628,7cyclictest247561-21ThreadPoolForeg08:09:553
263441993627,8cyclictest3817259-1kworker/3:1H+kblockd11:27:233
263436993634,1cyclictest409481-21kworker/2:1+pm09:40:172
263436993633,2cyclictest347179-21kworker/2:2+pm08:55:162
263436993633,2cyclictest347179-21kworker/2:2+pm08:55:162
263436993632,2cyclictest570490-21kworker/2:2+pm12:35:042
263433993634,2cyclictest449827-21kworker/u8:3+events_unbound10:23:411
263433993633,2cyclictest382476-21kworker/u8:3+events_unbound09:15:111
263433993632,3cyclictest361692-21kworker/u8:0+events_unbound10:01:331
263431993634,1cyclictest578226-1kworker/0:2H+kblockd12:32:080
263431993632,3cyclictest496463-21kworker/u8:0+events_unbound11:30:010
263431993632,3cyclictest382476-21kworker/u8:3+events_unbound09:30:330
263431993631,4cyclictest247560-21ThreadPoolForeg12:11:280
263431993630,4cyclictest573215-31munin-html12:05:510
26343199360,35cyclictest247562-13Chrome_ChildIOT07:50:100
263441993533,1cyclictest3817259-1kworker/3:1H+kblockd11:44:283
263441993533,1cyclictest3817259-1kworker/3:1H+kblockd11:22:233
263441993533,1cyclictest3817259-1kworker/3:1H+kblockd11:22:233
263441993533,1cyclictest3817259-1kworker/3:1H+kblockd10:58:023
263441993533,1cyclictest3817259-1kworker/3:1H+kblockd09:33:573
263441993533,1cyclictest3817259-1kworker/3:1H+kblockd07:47:433
263441993533,1cyclictest263266-21kworker/3:3+pm07:54:193
263441993532,2cyclictest532542-21kworker/3:1+pm11:59:333
263441993532,2cyclictest460480-21kworker/3:2+pm10:54:283
263441993532,2cyclictest3817259-1kworker/3:1H+kblockd10:21:003
263441993532,2cyclictest3817259-1kworker/3:1H+kblockd08:17:543
263441993532,2cyclictest3817259-1kworker/3:1H+kblockd07:31:083
263441993532,2cyclictest3817259-1kworker/3:1H+kblockd07:15:113
263441993531,3cyclictest3817259-1kworker/3:1H+kblockd10:16:263
263441993531,3cyclictest3817259-1kworker/3:1H+kblockd09:00:343
263441993530,4cyclictest449157-21munin-limits10:05:323
263441993530,4cyclictest449157-21munin-limits10:05:323
263441993529,4cyclictest532842-21/usr/share/muni11:30:123
263441993529,4cyclictest466180-21/usr/share/muni10:25:153
263441993521,3cyclictest403695-21cp09:25:003
263433993532,2cyclictest237100-21kworker/u8:1+events_unbound07:14:231
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