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2025-12-19 - 19:46
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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 Fri Dec 19, 2025 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
29065622202177,14sleep20-21swapper/207:08:492
29065302193169,14sleep00-21swapper/007:08:230
29064862189165,14sleep10-21swapper/107:07:481
29063842186162,14sleep30-21swapper/307:06:383
2906875991011,87cyclictest3125721-21chrome10:45:010
2906881996763,3cyclictest3196172-21kworker/u8:0+flush-179:012:10:332
32074052650,1chrt3207403-21snmp_ryswitch2.12:00:020
2906881996358,4cyclictest3159651-21kworker/u8:1+events_unbound11:20:102
2906881995854,3cyclictest2896015-21kworker/u8:3+events_unbound08:00:112
2906875995851,5cyclictest2938017-31munin-html07:35:520
2906881995652,3cyclictest3190832-21kworker/u8:4+events_unbound12:15:152
2906881995651,4cyclictest3056951-21kworker/u8:1+flush-179:009:35:172
2906881995651,3cyclictest3045837-21kworker/u8:4+flush-179:010:00:002
2906881995650,4cyclictest3067349-21kworker/u8:0+flush-179:010:00:202
2906875995647,7cyclictest247561-21ThreadPoolForeg08:35:190
2906881995551,3cyclictest3015075-21kworker/u8:3+flush-179:009:50:152
30691492540,1chrt3069152-21sed09:45:152
2906884995448,5cyclictest2912091-21/usr/share/muni07:15:113
2906884995448,4cyclictest3191127-21latency_hist11:45:013
2906875995448,4cyclictest2917565-21kworker/u8:0+flush-179:008:40:210
2906881995349,3cyclictest2896015-21kworker/u8:3+flush-179:007:30:112
2906881995347,4cyclictest2979987-21kworker/u8:1+flush-179:008:20:222
2906881995347,4cyclictest2906996-21/usr/share/muni07:10:092
2906881995248,3cyclictest3141357-21kworker/u8:0+flush-179:011:35:152
2906881995247,4cyclictest2885404-21kworker/u8:1+events_unbound07:15:012
2906881995246,4cyclictest3150923-21apt-get11:05:122
2906881995244,3cyclictest3196172-21kworker/u8:0+flush-179:012:25:172
2906881995233,18cyclictest3164927-21kworker/u8:2+events_unbound11:30:312
2906879995248,3cyclictest3196172-21kworker/u8:0+events_unbound11:48:001
2906879995248,3cyclictest3196172-21kworker/u8:0+events_unbound11:48:001
2906879995246,5cyclictest3125708-13Chrome_ChildIOT09:35:161
290687599520,51cyclictest3146498-21diskstats11:00:190
2906881995147,3cyclictest3045837-21kworker/u8:4+events_unbound10:30:292
2906881995146,4cyclictest3118495-21kworker/u8:1+flush-179:010:35:262
2906875995147,3cyclictest2946942-21kworker/u8:4+flush-179:007:55:210
2906875995145,4cyclictest2949125-21/usr/share/muni07:50:140
2906881995045,4cyclictest3164927-21kworker/u8:2+events_unbound11:45:142
2906881995045,4cyclictest3164927-21kworker/u8:2+events_unbound11:45:142
2906881995045,3cyclictest3164927-21kworker/u8:2+events_unbound12:00:202
2906884994945,3cyclictest3045837-21kworker/u8:4+flush-179:009:30:323
2906881994946,2cyclictest3237402-21kworker/u8:3+flush-179:012:30:122
2906881994946,2cyclictest3015075-21kworker/u8:3+flush-179:009:25:172
2906881994945,3cyclictest3217270-21kworker/u8:1+flush-179:012:35:292
2906881994945,3cyclictest3015075-21kworker/u8:3+flush-179:009:00:262
2906881994945,3cyclictest2917565-21kworker/u8:0+events_unbound08:50:092
2906881994945,3cyclictest2917565-21kworker/u8:0+events_unbound08:50:082
2906881994944,4cyclictest2927802-21kworker/u8:2+flush-179:007:35:082
2906881994942,5cyclictest2938701-21/usr/share/muni07:40:082
2906879994946,2cyclictest3141357-21kworker/u8:0+flush-179:011:35:321
2906879994945,3cyclictest3118588-21kworker/u8:2+events_unbound10:35:251
30174762480,1chrt3017466-21ntpq08:55:152
2906881994845,3cyclictest3141357-21kworker/u8:0+flush-179:011:10:252
2906881994843,3cyclictest3141357-21kworker/u8:0+flush-179:011:25:062
2906879994845,2cyclictest3103287-21kworker/u8:3+events_unbound10:54:241
2906879994845,2cyclictest2946942-21kworker/u8:4+events_unbound07:56:511
2906879994843,4cyclictest3170327-21kworker/u8:3+events_unbound11:41:311
2906875994842,4cyclictest3159997-21munin-update11:15:320
2906875994842,4cyclictest3093493-21/usr/share/muni10:10:110
2906884994742,4cyclictest247516-21Chrome_ChildIOT12:00:243
2906881994744,2cyclictest3118495-21kworker/u8:1+flush-179:010:47:242
2906881994743,3cyclictest3118495-21kworker/u8:1+events_unbound10:50:262
2906879994744,3cyclictest2896015-21kworker/u8:3+events_unbound08:30:321
2906879994744,2cyclictest3067349-21kworker/u8:0+flush-179:010:28:161
2906879994743,3cyclictest3045837-21kworker/u8:4+events_unbound10:45:121
2906879994735,1cyclictest2571851-1kworker/1:1H+kblockd11:58:401
2906875994741,4cyclictest3196172-21kworker/u8:0+flush-179:012:30:250
2906884994642,3cyclictest3141357-21kworker/u8:0+flush-179:011:35:083
2906884994642,3cyclictest3129499-21ThreadPoolForeg10:45:213
2906881994643,2cyclictest2896015-21kworker/u8:3+flush-179:008:15:182
2906881994642,3cyclictest3103287-21kworker/u8:3+flush-179:011:00:302
2906881994642,3cyclictest3103287-21kworker/u8:3+flush-179:010:55:112
2906881994642,3cyclictest3103287-21kworker/u8:3+flush-179:010:25:342
2906881994642,3cyclictest2917565-21kworker/u8:0+flush-179:008:35:152
2906881994642,2cyclictest2896015-21kworker/u8:3+flush-179:008:30:262
2906879994644,1cyclictest2571851-1kworker/1:1H+kblockd07:31:101
2906879994643,2cyclictest3103287-21kworker/u8:3+events_unbound10:58:561
2906879994643,2cyclictest3010443-21kworker/u8:1+flush-179:008:50:331
2906879994643,2cyclictest3010443-21kworker/u8:1+flush-179:008:50:321
2906879994642,3cyclictest2896015-21kworker/u8:3+events_unbound07:23:561
2906884994542,2cyclictest3015075-21kworker/u8:3+flush-179:008:52:063
2906884994542,2cyclictest3015075-21kworker/u8:3+flush-179:008:52:053
2906884994541,3cyclictest3015075-21kworker/u8:3+flush-179:009:12:573
2906884994526,16cyclictest3063985-21ntpq09:40:173
2906881994541,3cyclictest3196172-21kworker/u8:0+flush-179:012:05:182
2906881994541,3cyclictest3190832-21kworker/u8:4+flush-179:011:50:272
2906881994541,3cyclictest3067349-21kworker/u8:0+events_unbound10:10:152
2906881994539,4cyclictest3067349-21kworker/u8:0+flush-179:010:15:272
2906881994537,4cyclictest3010443-21kworker/u8:1+events_unbound09:05:142
2906879994542,2cyclictest3010443-21kworker/u8:1+events_unbound09:13:251
2906879994541,3cyclictest3045837-21kworker/u8:4+flush-179:009:55:271
2906879994540,3cyclictest3094760-21ntpq10:10:141
2906884994442,2cyclictest3045837-21kworker/u8:4+flush-179:009:55:243
2906884994428,11cyclictest2933697-21/usr/sbin/munin07:35:043
2906884994419,24cyclictest0-21swapper/310:05:003
2906881994441,2cyclictest3015075-21kworker/u8:3+flush-179:009:40:142
2906881994439,4cyclictest3056951-21kworker/u8:1+flush-179:009:31:542
2906879994441,2cyclictest3196172-21kworker/u8:0+events_unbound12:26:501
2906879994441,2cyclictest2896015-21kworker/u8:3+flush-179:008:00:261
2906879994440,3cyclictest2917565-21kworker/u8:0+events_unbound08:05:361
2906879994433,10cyclictest3045837-21kworker/u8:4+events_unbound10:02:421
2906884994329,7cyclictest1260-21snmpd10:26:393
2906881994340,2cyclictest2917565-21kworker/u8:0+flush-179:007:45:262
2906881994340,2cyclictest2917565-21kworker/u8:0+events_unbound08:10:342
2906881994338,4cyclictest2946942-21kworker/u8:4+events_unbound07:55:052
2906881994335,3cyclictest2896015-21kworker/u8:3+flush-179:007:30:012
2906881994335,3cyclictest2896015-21kworker/u8:3+flush-179:007:30:012
2906881994330,13cyclictest3005083-21kworker/2:0+pm08:46:052
2906879994339,3cyclictest2979987-21kworker/u8:1+flush-179:008:25:271
2906879994339,3cyclictest2946942-21kworker/u8:4+events_unbound07:50:461
2906875994335,6cyclictest3005449-21/usr/share/muni08:45:130
2906884994235,5cyclictest2979830-21/usr/share/muni08:20:143
2906884994226,14cyclictest3004406-31munin-html08:40:353
2906881994238,3cyclictest3087904-21kworker/u8:2+flush-179:010:05:282
2906881994238,3cyclictest3015075-21kworker/u8:3+events_unbound09:15:052
2906881994238,3cyclictest2917565-21kworker/u8:0+events_unbound08:09:592
2906881994237,4cyclictest3160242-21/usr/share/muni11:15:092
2906881994236,4cyclictest2917565-21kworker/u8:0+flush-179:008:40:102
2906879994237,4cyclictest3021338-21/usr/share/muni09:00:121
2906879994236,4cyclictest2974635-21/usr/share/muni08:15:061
2906879994231,10cyclictest2896015-21kworker/u8:3+events_unbound08:13:361
2906879994229,3cyclictest2885404-21kworker/u8:1+flush-179:007:16:411
2906875994238,3cyclictest3196172-21kworker/u8:0+flush-179:012:05:290
2906875994238,3cyclictest3103287-21kworker/u8:3+flush-179:011:05:170
2906875994236,5cyclictest2974392-21munin-update08:15:030
2906884994137,3cyclictest3196172-21kworker/u8:0+flush-179:012:25:233
2906884994136,4cyclictest247560-21ThreadPoolForeg11:18:043
2906881994138,2cyclictest3164927-21kworker/u8:2+events_unbound11:40:302
2906881994137,3cyclictest3139337-21kworker/2:1+pm12:20:082
2906881994137,3cyclictest3139337-21kworker/2:1+pm12:20:082
2906881994137,3cyclictest2885404-21kworker/u8:1+flush-179:007:20:342
290688199411,39cyclictest3125721-21chrome09:20:482
2906879994138,2cyclictest3209849-21kworker/u8:3+flush-179:012:02:521
2906879994138,2cyclictest3045837-21kworker/u8:4+events_unbound10:21:451
2906879994137,3cyclictest3005027-21kworker/u8:2+events_unbound09:22:071
2906875994138,2cyclictest2896015-21kworker/u8:3+flush-179:007:19:100
2906875994136,3cyclictest2946942-21kworker/u8:4+flush-179:007:48:510
2906875994135,4cyclictest3217270-21kworker/u8:1+flush-179:012:20:340
2906875994135,4cyclictest3217270-21kworker/u8:1+flush-179:012:20:330
2906884994037,2cyclictest3186088-21kworker/3:0+pm11:54:543
2906884994034,5cyclictest3045986-21munin-limits09:20:363
2906881994036,3cyclictest3164927-21kworker/u8:2+flush-179:011:55:082
2906881994036,3cyclictest3045837-21kworker/u8:4+flush-179:010:22:192
2906879994038,2cyclictest3036002-21kworker/u8:0+flush-179:009:25:201
2906879994037,2cyclictest3141357-21kworker/u8:0+events_unbound11:07:141
2906879994037,2cyclictest3010443-21kworker/u8:1+events_unbound09:19:381
2906879994036,3cyclictest3190832-21kworker/u8:4+events_unbound12:08:481
2906879994035,3cyclictest3217574-21/usr/share/muni12:10:201
2906879994034,2cyclictest3118588-21kworker/u8:2+events_unbound10:32:251
2906879994031,8cyclictest3217270-21kworker/u8:1+events_unbound12:22:321
2906879994031,8cyclictest3217270-21kworker/u8:1+events_unbound12:22:321
2906875994036,3cyclictest3010443-21kworker/u8:1+events_unbound08:56:520
2906875994035,4cyclictest3190832-21kworker/u8:4+flush-179:011:50:340
2906875994034,4cyclictest3045837-21kworker/u8:4+flush-179:009:55:010
2906875994034,4cyclictest3005027-21kworker/u8:2+flush-179:009:22:090
2906875994034,4cyclictest2896015-21kworker/u8:3+flush-179:008:25:210
2906875994026,2cyclictest105470-21isc-net-000010:57:550
2906884993936,2cyclictest3041611-21kworker/3:3+pm11:07:543
2906881993936,2cyclictest3030942-21kworker/2:1+pm10:42:192
2906881993936,2cyclictest2891302-21kworker/2:1+pm08:26:372
2906881993936,2cyclictest2891302-21kworker/2:1+pm07:53:482
2906881993934,4cyclictest3035731-31munin-html09:10:362
2906879993937,2cyclictest2885404-21kworker/u8:1+events_unbound07:35:401
2906879993936,2cyclictest3170327-21kworker/u8:3+events_unbound11:30:111
2906879993936,2cyclictest3098211-21kworker/u8:1+flush-179:010:15:371
2906879993936,2cyclictest3010443-21kworker/u8:1+events_unbound08:57:411
2906879993934,4cyclictest3125724-21ThreadPoolForeg12:34:301
2906875993934,4cyclictest3170327-21kworker/u8:3+flush-179:011:36:440
2906875993924,14cyclictest247515-21ThreadPoolForeg10:35:340
2906884993833,3cyclictest2974048-1kworker/3:2H+kblockd11:12:393
2906884993832,4cyclictest3129342-13chrome10:45:013
2906884993828,9cyclictest3125708-13Chrome_ChildIOT08:48:303
2906884993819,18cyclictest247561-21ThreadPoolForeg09:48:013
290688499381,2cyclictest0-21swapper/310:35:113
2906879993836,1cyclictest2953762-21kworker/1:2+pm08:48:571
2906879993835,2cyclictest3118588-21kworker/u8:2+flush-179:010:40:181
2906879993834,3cyclictest3196172-21kworker/u8:0+events_unbound11:51:581
2906879993834,3cyclictest3103287-21kworker/u8:3+events_unbound11:16:211
2906879993834,3cyclictest3077538-21kworker/u8:1+events_unbound09:53:391
2906875993835,2cyclictest2270937-1kworker/0:2H+kblockd07:12:090
2906875993834,3cyclictest3125627-21ChromeDriver00:55:190
2906875993834,3cyclictest2979828-21/usr/share/muni08:20:110
2906875993834,2cyclictest3010073-1kworker/0:1H+kblockd09:10:040
2906875993834,2cyclictest3010073-1kworker/0:1H+kblockd08:51:400
2906875993834,2cyclictest3010073-1kworker/0:1H+kblockd08:51:400
2906875993832,4cyclictest3141357-21kworker/u8:0+events_unbound11:26:580
2906875993832,4cyclictest2929148-21ntpq07:30:110
2906875993822,3cyclictest3125726-13Chrome_ChildIOT09:37:050
2906875993819,18cyclictest2919426-21apt-get07:20:120
2906884993735,1cyclictest2948948-21kworker/3:1+pm07:52:053
2906884993734,2cyclictest3211985-1kworker/3:1H+kblockd12:23:243
2906884993734,2cyclictest3211985-1kworker/3:1H+kblockd12:23:243
2906884993734,2cyclictest2974048-1kworker/3:2H+kblockd10:21:273
2906884993734,2cyclictest2974048-1kworker/3:2H+kblockd10:08:023
2906884993733,3cyclictest3191409-13Chrome_IOThread11:45:023
2906884993733,3cyclictest3191409-13Chrome_IOThread11:45:023
2906884993733,3cyclictest3141357-21kworker/u8:0+events_unbound10:59:103
2906884993733,2cyclictest2974048-1kworker/3:2H+kblockd11:21:403
2906884993732,4cyclictest3040789-21munin-limits09:15:353
2906884993731,4cyclictest3226977-31munin-html12:15:383
2906884993730,5cyclictest3238060-21/usr/share/muni12:30:103
2906884993730,5cyclictest3047164-21/usr/share/muni09:25:023
2906884993722,11cyclictest1260-21snmpd10:50:393
2906884993717,19cyclictest3125721-21chrome10:10:293
2906879993735,1cyclictest2571851-1kworker/1:1H+kblockd09:47:411
2906879993734,2cyclictest3045837-21kworker/u8:4+events_unbound10:06:401
2906879993734,2cyclictest3015075-21kworker/u8:3+events_unbound09:34:241
2906879993734,2cyclictest2571851-1kworker/1:1H+kblockd11:27:291
2906879993733,3cyclictest3217270-21kworker/u8:1+events_unbound12:37:411
2906875993734,2cyclictest3125724-21ThreadPoolForeg11:22:110
2906875993734,2cyclictest3088123-1kworker/0:1H+kblockd11:59:050
2906875993734,2cyclictest3088123-1kworker/0:1H+kblockd11:10:350
2906875993734,2cyclictest3010073-1kworker/0:1H+kblockd09:32:350
2906875993734,2cyclictest3010073-1kworker/0:1H+kblockd09:04:570
2906875993734,2cyclictest2270937-1kworker/0:2H+kblockd08:30:310
2906875993733,3cyclictest3164927-21kworker/u8:2+flush-179:011:40:280
2906875993733,3cyclictest3088123-1kworker/0:1H+kblockd11:30:250
2906875993733,3cyclictest3045837-21kworker/u8:4+flush-179:010:00:220
2906875993732,4cyclictest3125724-21ThreadPoolForeg10:07:000
2906875993732,3cyclictest3088123-1kworker/0:1H+kblockd10:22:090
2906884993634,1cyclictest2974048-1kworker/3:2H+kblockd11:31:123
2906884993634,1cyclictest2974048-1kworker/3:2H+kblockd10:19:083
2906884993634,1cyclictest2974048-1kworker/3:2H+kblockd09:00:553
2906884993634,1cyclictest2420949-1kworker/3:0H+kblockd07:48:393
2906884993632,3cyclictest2984954-21/usr/share/muni08:25:023
2906884993631,3cyclictest3211985-1kworker/3:1H+kblockd12:39:193
2906879993634,2cyclictest3045837-21kworker/u8:4+events_unbound11:04:451
2906879993634,2cyclictest2896015-21kworker/u8:3+flush-179:007:10:221
2906879993634,1cyclictest2571851-1kworker/1:1H+kblockd11:14:351
2906879993632,3cyclictest3141357-21kworker/u8:0+flush-179:011:20:181
2906879993631,4cyclictest247561-21ThreadPoolForeg09:44:481
2906875993634,1cyclictest3088123-1kworker/0:1H+kblockd10:43:170
2906875993633,2cyclictest3061986-1kworker/0:2H+kblockd09:57:050
2906875993633,2cyclictest3061986-1kworker/0:2H+kblockd09:41:170
2906875993633,2cyclictest3036002-21kworker/u8:0+flush-179:009:16:270
2906875993632,3cyclictest3005027-21kworker/u8:2+flush-179:009:25:080
2906875993632,3cyclictest247560-21ThreadPoolForeg10:50:440
2906875993632,2cyclictest3061986-1kworker/0:2H+kblockd09:45:040
2906875993630,4cyclictest3125724-21ThreadPoolForeg07:41:110
2906875993629,6cyclictest3125709-13VizCompositorTh08:10:160
2906875993629,6cyclictest2885404-21kworker/u8:1+events_unbound07:25:150
2906875993629,6cyclictest2885404-21kworker/u8:1+events_unbound07:25:140
2906884993533,1cyclictest2974048-1kworker/3:2H+kblockd08:16:033
2906884993532,2cyclictest2974048-1kworker/3:2H+kblockd11:55:563
2906884993532,2cyclictest1260-21snmpd07:58:013
2906884993531,3cyclictest3125726-13Chrome_ChildIOT07:11:343
2906884993531,2cyclictest3125726-13Chrome_ChildIOT09:38:063
2906884993531,2cyclictest2420949-1kworker/3:0H+kblockd07:32:373
2906884993528,7cyclictest1260-21snmpd08:11:043
2906884993527,6cyclictest247560-21ThreadPoolForeg12:06:193
2906884993520,3cyclictest3125708-13Chrome_ChildIOT07:43:383
2906879993533,1cyclictest2571851-1kworker/1:1H+kblockd08:44:381
2906879993533,1cyclictest2571851-1kworker/1:1H+kblockd08:36:131
2906879993532,2cyclictest2917565-21kworker/u8:0+events_unbound07:45:241
2906875993533,1cyclictest3088123-1kworker/0:1H+kblockd10:29:590
2906875993532,2cyclictest3125726-13Chrome_ChildIOT12:26:350
2906875993532,2cyclictest3010073-1kworker/0:1H+kblockd09:09:220
2906875993531,3cyclictest3196172-21kworker/u8:0+flush-179:012:10:110
2906875993520,13cyclictest1254-21openvpn10:15:150
290688499349,22cyclictest3125627-21ChromeDriver00:55:193
290688499347,26cyclictest3125721-21chrome07:21:283
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2906884993431,2cyclictest3125721-21chrome09:50:163
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2906884993430,3cyclictest3125627-21ChromeDriver00:55:193
2906884993430,2cyclictest105470-21isc-net-000008:06:543
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2906884993331,1cyclictest2974048-1kworker/3:2H+kblockd09:07:013
2906884993330,2cyclictest3125726-13Chrome_ChildIOT11:00:493
2906884993330,2cyclictest2974048-1kworker/3:2H+kblockd08:56:183
2906884993324,7cyclictest3113987-21/usr/share/muni10:30:013
2906879993330,2cyclictest247563-13Compositor09:06:271
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2906879993230,2cyclictest2979987-21kworker/u8:1+flush-179:008:22:281
2906879993230,2cyclictest2927802-21kworker/u8:2+flush-179:007:40:121
2906879993229,2cyclictest3125627-21ChromeDriver00:55:191
2906875993229,2cyclictest3190832-21kworker/u8:4+flush-179:011:45:370
2906875993229,2cyclictest3190832-21kworker/u8:4+flush-179:011:45:370
2906875993229,2cyclictest3088123-1kworker/0:1H+kblockd10:31:090
2906884993129,1cyclictest2420949-1kworker/3:0H+kblockd07:25:163
2906884993129,1cyclictest2420949-1kworker/3:0H+kblockd07:25:163
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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