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2025-11-30 - 19:23
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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 Nov 30, 2025 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
40585019912111206,3cyclictest20062-21apache_accesses09:40:050
40582942215186,19sleep30-21swapper/307:09:593
40582942215186,19sleep30-21swapper/307:09:583
40581822208184,14sleep10-21swapper/107:08:321
40581822208184,14sleep10-21swapper/107:08:311
40581172208184,14sleep20-21swapper/207:07:452
40581172208184,14sleep20-21swapper/207:07:452
40582472203180,13sleep00-21swapper/007:09:220
40582472203180,13sleep00-21swapper/007:09:220
4058501997368,4cyclictest247515-21ThreadPoolForeg10:05:240
4058504997154,14cyclictest4157520-21snmp_ryswitch.c08:45:012
4058504996762,3cyclictest35185-21latency_hist09:55:022
4058507996157,3cyclictest56308-21kworker/u8:3+flush-179:010:40:303
405850799615,55cyclictest4031426-21kworker/u8:4+efi_rts_wq07:46:583
4058507996148,12cyclictest4130057-21kworker/u8:0+flush-179:008:26:493
2008642610,1chrt200855-21snmp_areswitch.12:35:040
4058502996056,2cyclictest4130057-21kworker/u8:0+flush-179:009:45:001
4058502996055,4cyclictest4031426-21kworker/u8:4+flush-179:007:20:361
4058502996055,4cyclictest4031426-21kworker/u8:4+flush-179:007:20:361
4058502996045,2cyclictest4157533-21ThreadPoolForeg08:45:021
4058507995956,2cyclictest148094-21kworker/u8:0+flush-179:012:10:083
4058501995954,4cyclictest247561-21ThreadPoolForeg10:00:310
4058502995854,3cyclictest4074652-21kworker/u8:1+events_unbound08:00:011
4058507995652,3cyclictest184692-21kworker/u8:1+events_unbound12:35:183
4058507995638,3cyclictest4100353-21kworker/u8:3+flush-179:008:00:153
4058502995651,4cyclictest29705-21kworker/u8:1+flush-179:010:00:311
4058504995551,3cyclictest76405-21systemd-journal07:30:282
1957652550,1chrt195618-21/usr/share/muni12:30:030
4058507995450,3cyclictest4156760-21kworker/u8:4+events_unbound09:20:293
4058507995450,3cyclictest4047794-21kworker/u8:3+events_unbound07:30:333
4058504995444,9cyclictest4172951-21/usr/share/muni09:00:152
4058502995451,2cyclictest127996-21kworker/u8:0+events_unbound11:30:161
405850199544,50cyclictest4031426-21kworker/u8:4+efi_rts_wq07:46:590
4058507995350,2cyclictest39256-21kworker/u8:2+flush-179:010:00:213
4058507995349,3cyclictest148094-21kworker/u8:0+events_unbound12:17:023
4058507995347,4cyclictest87006-21kworker/u8:0+flush-179:011:12:313
4058502995342,10cyclictest4130057-21kworker/u8:0+flush-179:008:50:331
4058501995347,5cyclictest4193122-21latency_hist09:20:010
4058502995248,3cyclictest102627-21kworker/u8:1+flush-179:011:20:011
4058502995247,3cyclictest127996-21kworker/u8:0+flush-179:011:25:201
4058502995246,4cyclictest3125725-21ThreadPoolForeg11:39:461
4058507995147,3cyclictest4156760-21kworker/u8:4+events_unbound09:50:123
4058507995147,3cyclictest4100353-21kworker/u8:3+flush-179:007:55:003
4058507995147,3cyclictest4094932-21kworker/u8:2+flush-179:008:17:023
4058507995147,3cyclictest14137-21kworker/u8:3+events_unbound09:35:213
4058504995139,11cyclictest3125724-21ThreadPoolForeg10:20:152
4058504995139,11cyclictest3125724-21ThreadPoolForeg10:20:152
4058502995148,2cyclictest14137-21kworker/u8:3+flush-179:009:35:271
4058502995147,3cyclictest4192457-21kworker/u8:1+flush-179:009:20:041
4058502995147,3cyclictest4074652-21kworker/u8:1+events_unbound08:05:141
4058502995147,3cyclictest4031426-21kworker/u8:4+flush-179:007:50:141
4058502995147,3cyclictest39256-21kworker/u8:2+events_unbound10:35:081
4058502995147,2cyclictest4130057-21kworker/u8:0+flush-179:010:15:281
4058502995146,4cyclictest247560-21ThreadPoolForeg07:45:001
4058507995046,3cyclictest87006-21kworker/u8:0+flush-179:011:05:243
4058507995046,3cyclictest102627-21kworker/u8:1+events_unbound11:44:043
4058507994945,3cyclictest133021-21kworker/u8:2+flush-179:011:50:223
4058507994945,3cyclictest127996-21kworker/u8:0+flush-179:011:35:213
4058502994945,3cyclictest158878-21kworker/u8:4+events_unbound12:00:321
4058502994945,3cyclictest102627-21kworker/u8:1+events_unbound11:45:301
4058502994944,4cyclictest29705-21kworker/u8:1+flush-179:009:50:331
4058501994943,4cyclictest4085202-21/usr/share/muni07:35:150
4058507994846,2cyclictest102627-21kworker/u8:1+events_unbound11:55:093
4058507994845,2cyclictest4130057-21kworker/u8:0+events_unbound08:21:333
4058507994844,3cyclictest39256-21kworker/u8:2+events_unbound10:10:253
4058507994844,3cyclictest186640-21apt-get12:20:123
4058507994843,4cyclictest4130057-21kworker/u8:0+flush-179:008:50:163
4058504994844,3cyclictest4156760-21kworker/u8:4+flush-179:009:20:142
405850499481,28cyclictest3125727-21ThreadPoolForeg09:37:382
4058502994844,3cyclictest4074652-21kworker/u8:1+flush-179:007:25:181
4058502994844,3cyclictest133021-21kworker/u8:2+flush-179:012:15:141
4058502994843,4cyclictest133021-21kworker/u8:2+flush-179:011:50:271
4058501994841,5cyclictest247560-21ThreadPoolForeg09:05:050
4058507994744,2cyclictest4100353-21kworker/u8:3+flush-179:008:45:223
4058507994743,3cyclictest4074652-21kworker/u8:1+events_unbound08:10:013
4058507994743,3cyclictest153405-21munin-limits11:45:363
4058504994740,5cyclictest102930-21/usr/share/muni11:00:102
4058504994736,10cyclictest4155-21kworker/2:0+pm09:30:382
4058502994744,2cyclictest4156760-21kworker/u8:4+flush-179:009:15:331
4058502994743,3cyclictest4100353-21kworker/u8:3+flush-179:008:10:321
4058502994731,15cyclictest3954558-1kworker/1:2H+kblockd07:35:491
4058501994744,2cyclictest4130057-21kworker/u8:0+flush-179:009:30:150
4058501994741,4cyclictest56308-21kworker/u8:3+flush-179:010:23:520
4058501994741,4cyclictest56308-21kworker/u8:3+flush-179:010:23:520
4058501994740,4cyclictest4084685-31munin-graph07:32:190
4058507994643,2cyclictest4063311-21kworker/u8:0+events_unbound07:35:253
4058507994642,3cyclictest4074652-21kworker/u8:1+flush-179:007:55:203
4058507994641,4cyclictest4162096-21kworker/u8:5+flush-179:008:57:053
4058507994641,3cyclictest4063311-21kworker/u8:0+flush-179:007:20:133
4058507994641,3cyclictest4063311-21kworker/u8:0+flush-179:007:20:133
4058507994640,4cyclictest25071-21/usr/share/muni09:45:253
4058507994640,4cyclictest25071-21/usr/share/muni09:45:253
4058502994641,3cyclictest4111011-21/usr/share/muni08:00:161
4058501994642,3cyclictest184344-21munin-limits12:15:340
41781902450,3sleep24178174-21snmp_wlanswitch09:05:032
4058507994542,2cyclictest56308-21kworker/u8:3+events_unbound11:20:353
4058507994541,3cyclictest4074652-21kworker/u8:1+flush-179:007:25:343
4058507994541,3cyclictest39256-21kworker/u8:2+events_unbound10:50:153
4058504994536,8cyclictest4152016-21kworker/2:2+pm09:16:032
4058504994535,9cyclictest4042929-21kworker/2:0+pm08:14:062
4058504994533,11cyclictest4155-21kworker/2:0+pm09:41:052
4058504994531,12cyclictest34531-21kworker/2:2+pm10:26:162
40637762440,1chrt4063774-21snmp_areswitch.07:15:023
4058507994440,3cyclictest4130057-21kworker/u8:0+events_unbound09:44:293
4058507994440,3cyclictest4031426-21kworker/u8:4+events_unbound07:40:293
4058507994440,3cyclictest184692-21kworker/u8:1+flush-179:012:28:043
4058507994440,3cyclictest164206-21kworker/u8:3+flush-179:012:00:163
4058507994440,3cyclictest133021-21kworker/u8:2+flush-179:012:32:113
4058507994440,3cyclictest102627-21kworker/u8:1+events_unbound11:17:143
4058507994439,3cyclictest4100353-21kworker/u8:3+flush-179:008:35:133
4058507994437,3cyclictest102627-21kworker/u8:1+flush-179:011:30:223
4058504994442,1cyclictest34531-21kworker/2:2+pm09:57:402
4058504994441,2cyclictest112703-21kworker/2:0+pm11:34:232
4058504994440,3cyclictest149084-21snmp_wanswitch.11:45:022
4058504994439,4cyclictest4042929-21kworker/2:0+pm07:44:572
4058504994428,4cyclictest4577-21/usr/share/muni09:25:042
4058504994428,15cyclictest102627-21kworker/u8:1+flush-179:011:10:312
405850499441,2cyclictest4115581-31munin-html08:02:122
4058502994441,2cyclictest4156760-21kworker/u8:4+flush-179:009:45:231
4058502994441,2cyclictest4156760-21kworker/u8:4+flush-179:009:45:231
4058502994440,3cyclictest56308-21kworker/u8:3+flush-179:010:20:331
4058502994440,3cyclictest56308-21kworker/u8:3+flush-179:010:20:321
4058502994440,3cyclictest4273-21kworker/u8:2+flush-179:009:30:231
4058502994440,3cyclictest4130057-21kworker/u8:0+flush-179:009:10:391
4058502994439,4cyclictest4130057-21kworker/u8:0+events_unbound08:44:271
4058502994438,2cyclictest4156760-21kworker/u8:4+events_unbound10:25:091
4058501994440,3cyclictest122759-21kworker/u8:4+flush-179:011:35:350
4058507994340,3cyclictest56308-21kworker/u8:3+flush-179:010:20:153
4058507994340,3cyclictest56308-21kworker/u8:3+flush-179:010:20:143
4058507994340,2cyclictest4047794-21kworker/u8:3+flush-179:007:10:293
4058507994339,3cyclictest97164-21kworker/u8:5+flush-179:010:55:223
4058507994339,3cyclictest39256-21kworker/u8:2+flush-179:010:16:443
405850499436,4cyclictest3125684-13Chrome_DevTools07:47:502
4058504994336,6cyclictest112703-21kworker/2:0+pm12:18:092
4058504994333,9cyclictest73233-21kworker/2:1+pm10:45:072
4058504994333,9cyclictest73233-21kworker/2:1+pm10:45:072
4058504994333,9cyclictest73233-21kworker/2:1+pm10:38:342
4058504994333,9cyclictest4042929-21kworker/2:0+pm08:27:252
4058504994327,12cyclictest1260-21snmpd07:26:512
4058504994326,10cyclictest247557-21chrome09:46:252
4058504994326,10cyclictest247557-21chrome09:46:252
405850499431,38cyclictest0-21swapper/212:21:022
4058502994340,2cyclictest39256-21kworker/u8:2+flush-179:010:50:291
4058502994339,3cyclictest87006-21kworker/u8:0+flush-179:010:56:171
4058502994339,3cyclictest75959-21kworker/u8:1+flush-179:010:30:361
4058502994337,5cyclictest124633-21apt-get11:20:131
4058501994340,2cyclictest87006-21kworker/u8:0+flush-179:011:10:370
405850199431,40cyclictest3125728-13Compositor10:50:180
405850199431,39cyclictest247557-21chrome09:00:060
4058507994239,2cyclictest4130057-21kworker/u8:0+events_unbound08:30:253
4058507994239,2cyclictest127996-21kworker/u8:0+events_unbound11:25:333
4058507994238,3cyclictest4156760-21kworker/u8:4+events_unbound10:29:163
4058504994236,5cyclictest82277-21/usr/share/muni10:40:192
4058504994233,8cyclictest112703-21kworker/2:0+pm11:38:162
4058504994232,9cyclictest112703-21kworker/2:0+pm12:10:142
4058504994231,10cyclictest3125648-13Chrome_IOThread12:05:042
4058504994229,12cyclictest1260-21snmpd08:59:242
4058504994224,12cyclictest3125721-21chrome08:16:092
405850499421,40cyclictest45195-31munin-html10:00:402
4058502994240,2cyclictest56308-21kworker/u8:3+flush-179:010:45:421
4058502994240,2cyclictest56308-21kworker/u8:3+flush-179:010:45:411
4058502994239,2cyclictest4130057-21kworker/u8:0+flush-179:008:30:221
4058502994238,3cyclictest4094932-21kworker/u8:2+flush-179:008:15:491
4058502994238,3cyclictest184692-21kworker/u8:1+flush-179:012:35:291
4058502994238,3cyclictest148094-21kworker/u8:0+flush-179:012:25:051
4058502994235,4cyclictest148094-21kworker/u8:0+events_unbound11:41:241
4058501994237,3cyclictest3558292-1kworker/0:1H+kblockd08:09:560
405850199421,39cyclictest164541-21snmp_areswitch.12:00:020
405850199420,40cyclictest4065208-21ntpq07:15:100
4058507994138,2cyclictest4130057-21kworker/u8:0+events_unbound09:25:163
4058507994137,3cyclictest4156760-21kworker/u8:4+flush-179:009:05:143
4058507994137,3cyclictest4074652-21kworker/u8:1+events_unbound08:10:163
4058504994138,2cyclictest4042929-21kworker/2:0+pm08:23:092
4058504994138,2cyclictest34531-21kworker/2:2+pm10:13:072
4058504994138,2cyclictest112703-21kworker/2:0+pm12:33:492
4058504994136,3cyclictest73233-21kworker/2:1+pm10:55:042
4058504994133,6cyclictest4187745-31munin-graph09:12:302
4058504994132,8cyclictest4042929-21kworker/2:0+pm07:55:432
4058502994137,2cyclictest4156760-21kworker/u8:4+flush-179:008:56:241
4058507994037,2cyclictest4273-21kworker/u8:2+flush-179:009:31:003
4058507994026,13cyclictest4130057-21kworker/u8:0+flush-179:009:14:053
4058504994037,2cyclictest4042929-21kworker/2:0+pm08:09:232
4058504994036,3cyclictest112703-21kworker/2:0+pm11:55:062
4058504994036,3cyclictest112703-21kworker/2:0+pm11:50:042
4058504994033,6cyclictest4042929-21kworker/2:0+pm07:50:492
4058504994029,10cyclictest112703-21kworker/2:0+pm12:04:452
4058504994025,13cyclictest107592-21kworker/2:2+pm11:05:122
4058504994021,18cyclictest112703-21kworker/2:0+pm12:28:162
405850499401,37cyclictest3125728-13Compositor10:31:232
405850499400,39cyclictest0-21swapper/211:21:032
4058502994037,2cyclictest97164-21kworker/u8:5+flush-179:011:00:181
4058502994037,2cyclictest158878-21kworker/u8:4+events_unbound11:56:331
4058502994036,3cyclictest87102-21kworker/u8:4+flush-179:010:45:001
4058501994034,4cyclictest4112570-21ntpq08:00:180
4058501994034,4cyclictest4100353-21kworker/u8:3+flush-179:008:50:340
4058501994033,5cyclictest77214-21/usr/share/muni10:35:230
4058507993935,3cyclictest73406-21apt-get10:30:163
4058507993935,3cyclictest4192457-21kworker/u8:1+events_unbound09:15:593
4058507993935,3cyclictest164206-21kworker/u8:3+events_unbound12:07:503
4058507993930,8cyclictest56308-21kworker/u8:3+events_unbound10:35:423
4058507993913,19cyclictest87488-21chrome10:45:043
4058507993913,19cyclictest87488-21chrome10:45:043
4058504993936,2cyclictest4042929-21kworker/2:0+pm08:32:312
4058504993936,2cyclictest4042929-21kworker/2:0+pm07:16:032
4058504993936,2cyclictest4042929-21kworker/2:0+pm07:10:102
4058504993936,2cyclictest34531-21kworker/2:2+pm10:06:402
4058504993936,2cyclictest112703-21kworker/2:0+pm11:40:272
4058504993936,2cyclictest112703-21kworker/2:0+pm11:27:282
4058504993933,4cyclictest4167322-31munin-html08:52:142
4058502993936,2cyclictest4162096-21kworker/u8:5+flush-179:009:00:191
4058502993935,3cyclictest39256-21kworker/u8:2+events_unbound10:08:331
4058502993934,4cyclictest87006-21kworker/u8:0+flush-179:011:11:181
4058502993934,3cyclictest87006-21kworker/u8:0+flush-179:011:07:241
4058502993933,4cyclictest3125724-21ThreadPoolForeg12:30:311
4058501993935,3cyclictest4174369-1kworker/0:2H+kblockd10:30:050
4058501993935,3cyclictest4100353-21kworker/u8:3+flush-179:007:52:390
4058501993935,3cyclictest3125688-21Chrome_ChildIOT08:45:200
4058501993935,3cyclictest123047-21kworker/0:1+pm12:09:310
4058501993935,2cyclictest4174369-1kworker/0:2H+kblockd10:58:260
4058501993934,4cyclictest39256-21kworker/u8:2+events_unbound10:50:000
4058501993934,4cyclictest39256-21kworker/u8:2+events_unbound10:50:000
4058501993934,3cyclictest4174369-1kworker/0:2H+kblockd09:27:210
4058501993934,3cyclictest3125728-13Compositor11:59:120
4058501993934,3cyclictest3125725-21ThreadPoolForeg09:13:390
4058501993932,5cyclictest159145-21latency_hist11:55:010
4058507993834,3cyclictest87006-21kworker/u8:0+flush-179:011:01:433
4058507993833,4cyclictest4152627-21kworker/u8:1+flush-179:008:41:473
4058507993827,10cyclictest3125728-13Compositor09:00:223
4058504993836,1cyclictest73233-21kworker/2:1+pm10:54:492
4058504993836,1cyclictest4152016-21kworker/2:2+pm08:40:222
4058504993836,1cyclictest4042929-21kworker/2:0+pm08:35:372
4058504993836,1cyclictest34531-21kworker/2:2+pm10:15:062
4058504993819,18cyclictest3125630-13chrome07:20:402
4058504993819,18cyclictest3125630-13chrome07:20:392
4058502993835,2cyclictest164206-21kworker/u8:3+flush-179:012:10:291
4058502993835,2cyclictest148094-21kworker/u8:0+flush-179:012:08:481
4058502993827,10cyclictest3954558-1kworker/1:2H+kblockd09:55:351
4058501993835,2cyclictest4174369-1kworker/0:2H+kblockd10:17:010
4058501993835,2cyclictest4174369-1kworker/0:2H+kblockd10:12:330
4058501993834,3cyclictest4174369-1kworker/0:2H+kblockd12:26:510
4058501993834,3cyclictest4174369-1kworker/0:2H+kblockd11:24:490
4058501993834,3cyclictest4156760-21kworker/u8:4+flush-179:009:55:100
4058501993833,3cyclictest4156760-21kworker/u8:4+flush-179:008:56:460
4058501993832,4cyclictest4074449-31munin-html07:22:220
4058501993832,4cyclictest4074449-31munin-html07:22:210
4058501993832,4cyclictest30088-21munin-update09:52:040
4058507993735,2cyclictest4130057-21kworker/u8:0+flush-179:009:59:563
4058507993734,2cyclictest39256-21kworker/u8:2+events_unbound10:05:083
4058504993735,1cyclictest4042929-21kworker/2:0+pm07:39:282
4058504993733,3cyclictest112703-21kworker/2:0+pm12:35:062
4058504993730,5cyclictest247560-21ThreadPoolForeg11:15:302
4058502993734,2cyclictest4156760-21kworker/u8:4+flush-179:010:12:141
4058502993734,2cyclictest4058043-21kworker/u8:1+flush-179:007:10:471
4058502993733,3cyclictest4130057-21kworker/u8:0+flush-179:009:25:121
4058502993733,3cyclictest4094932-21kworker/u8:2+flush-179:008:37:511
4058502993733,3cyclictest4031426-21kworker/u8:4+flush-179:007:15:191
4058502993731,5cyclictest3125727-21ThreadPoolForeg08:22:551
4058501993734,2cyclictest4174369-1kworker/0:2H+kblockd12:11:530
4058501993734,2cyclictest4174369-1kworker/0:2H+kblockd11:42:090
4058501993734,2cyclictest4174369-1kworker/0:2H+kblockd11:06:540
4058501993734,2cyclictest3558292-1kworker/0:1H+kblockd07:40:180
4058501993733,3cyclictest4174369-1kworker/0:2H+kblockd09:47:040
4058501993733,3cyclictest4174369-1kworker/0:2H+kblockd09:47:040
4058501993733,3cyclictest3558292-1kworker/0:1H+kblockd08:13:190
4058501993733,2cyclictest3558292-1kworker/0:1H+kblockd08:16:300
4058501993732,4cyclictest3125726-13Chrome_ChildIOT08:35:290
4058502993632,3cyclictest4031426-21kworker/u8:4+flush-179:007:30:171
4058502993632,3cyclictest168521-21kworker/u8:5+events_unbound12:20:231
4058501993633,2cyclictest4174369-1kworker/0:2H+kblockd11:30:370
4058501993633,2cyclictest4174369-1kworker/0:2H+kblockd10:25:070
4058501993633,2cyclictest3558292-1kworker/0:1H+kblockd08:42:580
4058501993633,2cyclictest3558292-1kworker/0:1H+kblockd07:59:290
4058501993631,3cyclictest4174369-1kworker/0:2H+kblockd11:25:350
4058502993530,3cyclictest4074652-21kworker/u8:1+events_unbound07:46:171
4058501993534,1cyclictest4174369-1kworker/0:2H+kblockd12:24:240
4058501993533,1cyclictest4174369-1kworker/0:2H+kblockd11:46:570
4058501993532,2cyclictest4174369-1kworker/0:2H+kblockd09:22:180
4058501993532,2cyclictest4094932-21kworker/u8:2+flush-179:008:25:280
4058501993532,2cyclictest3558292-1kworker/0:1H+kblockd08:30:460
4058501993531,3cyclictest3558292-1kworker/0:1H+kblockd07:25:130
4058502993431,2cyclictest3954558-1kworker/1:2H+kblockd08:25:321
4058501993431,2cyclictest4174369-1kworker/0:2H+kblockd09:35:340
4058501993431,2cyclictest247573-21ThreadPoolForeg08:21:080
4058501993431,2cyclictest247545-13VizCompositorTh07:10:560
4058501993418,14cyclictest3125728-13Compositor11:02:240
4058502993330,2cyclictest4156760-21kworker/u8:4+flush-179:009:06:031
4058501993331,1cyclictest4174369-1kworker/0:2H+kblockd11:15:330
4058501993329,3cyclictest3125728-13Compositor10:40:260
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