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2025-11-10 - 16:31
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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 Mon Nov 10, 2025 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
37275592228199,19sleep30-21swapper/307:08:323
37276612211182,20sleep20-21swapper/207:09:512
37274372211183,18sleep00-21swapper/007:07:030
37274162196166,20sleep10-21swapper/107:06:491
404345721410,1sleep3431rcuc/312:20:163
372786899910,89cyclictest3943850-21snmp_ryswitch.c10:45:022
3727868996762,4cyclictest3764610-21latency_hist07:45:012
3727872996258,3cyclictest3995470-21/usr/share/muni11:35:043
3727872996158,3cyclictest3837367-21kworker/u8:3+events_unbound09:25:193
3727872995955,3cyclictest4045721-21kworker/u8:1+events_unbound12:25:333
3727868995854,3cyclictest3855561-21kworker/u8:2+flush-179:009:55:132
3727872995753,3cyclictest3949352-21/usr/share/muni10:50:133
3727872995753,3cyclictest3881829-21CacheThread_Blo09:45:023
3727866995754,2cyclictest3712099-21kworker/u8:0+events_unbound07:10:181
3727861995753,3cyclictest3922769-21kworker/u8:4+events_unbound10:25:200
3727868995649,5cyclictest247516-21Chrome_ChildIOT11:50:342
3727866995652,3cyclictest4061272-31munin-html12:35:361
3727866995652,3cyclictest4061272-31munin-html12:35:361
3727866995652,3cyclictest3743888-21kworker/u8:4+events_unbound08:04:381
3727866995552,2cyclictest3871261-21kworker/u8:0+events_unbound09:40:141
3727872995451,2cyclictest3837367-21kworker/u8:3+flush-179:009:10:353
3727872995451,2cyclictest3743888-21kworker/u8:4+events_unbound08:00:293
3727868995229,22cyclictest3871261-21kworker/u8:0+flush-179:010:07:492
3727861995249,2cyclictest4045721-21kworker/u8:1+events_unbound12:25:090
3727872995148,2cyclictest3855561-21kworker/u8:2+flush-179:009:30:333
3727872995146,4cyclictest3912030-31munin-html10:10:383
3727872995146,4cyclictest3887446-21/usr/share/muni09:50:033
3727866995147,3cyclictest3763775-21munin-limits07:40:351
3727866995146,3cyclictest3845740-21latency_hist09:10:011
3727861995037,1cyclictest3881816-21ThreadPoolForeg09:45:020
3727872994946,2cyclictest3928227-21kworker/u8:2+events_unbound10:31:393
3727872994944,3cyclictest3943107-21kworker/u8:1+flush-179:010:45:303
3727872994932,16cyclictest3840323-21kworker/u8:1+events_unbound09:05:013
3727868994945,3cyclictest3633140-21kworker/u8:2+flush-179:007:10:162
3727868994943,5cyclictest247515-21ThreadPoolForeg11:00:542
3727866994935,14cyclictest3928227-21kworker/u8:2+events_unbound11:59:101
3727861994945,3cyclictest3840323-21kworker/u8:1+events_unbound09:20:180
3727872994846,2cyclictest3759167-21kworker/u8:2+events_unbound08:56:583
3727872994845,2cyclictest3928227-21kworker/u8:2+events_unbound11:00:343
3727872994845,2cyclictest3759167-21kworker/u8:2+flush-179:008:43:383
3727872994844,3cyclictest4036902-21kworker/u8:0+events_unbound12:30:313
3727872994844,3cyclictest3959073-21kworker/u8:0+events_unbound11:55:003
3727872994843,4cyclictest3837367-21kworker/u8:3+events_unbound09:35:023
3727868994845,2cyclictest3855561-21kworker/u8:2+flush-179:009:50:132
3727866994846,2cyclictest3882466-21kworker/u8:1+events_unbound09:50:331
3727861994843,4cyclictest3990167-21kworker/u8:3+flush-179:011:50:160
3727872994744,2cyclictest3359965-1kworker/3:1H+kblockd11:05:063
3727872994743,3cyclictest3743730-21kworker/u8:3+events_unbound07:25:283
3727866994734,12cyclictest3928227-21kworker/u8:2+events_unbound10:55:221
3727861994740,5cyclictest247516-21Chrome_ChildIOT12:15:240
372786199470,46cyclictest247418-21python308:50:150
3727872994643,2cyclictest3712099-21kworker/u8:0+flush-179:007:13:553
3727872994642,3cyclictest3754000-21kworker/u8:1+flush-179:007:40:153
3727872994642,2cyclictest3779845-21kworker/u8:0+flush-179:008:20:013
3727872994640,2cyclictest3805359-21kworker/u8:4+events_unbound08:49:223
3727872994634,11cyclictest3928227-21kworker/u8:2+flush-179:011:48:153
3727868994643,2cyclictest3712099-21kworker/u8:0+flush-179:007:15:242
3727868994642,3cyclictest4030422-31munin-html12:05:342
3727868994641,4cyclictest3923321-21/usr/share/muni10:25:162
3727868994641,4cyclictest3856017-21latency_hist09:20:012
3727861994642,3cyclictest3928227-21kworker/u8:2+events_unbound12:00:010
3727872994543,2cyclictest3855561-21kworker/u8:2+events_unbound10:05:363
3727872994542,2cyclictest3743888-21kworker/u8:4+events_unbound07:35:283
3727872994541,3cyclictest3912645-21kworker/u8:2+flush-179:010:15:253
3727872994541,3cyclictest3840323-21kworker/u8:1+events_unbound09:22:543
3727868994542,2cyclictest3943293-21kworker/2:0+pm11:18:592
3727868994532,13cyclictest3892414-21kworker/2:3+pm10:21:062
3727866994542,2cyclictest3990167-21kworker/u8:3+events_unbound11:35:291
3727866994542,2cyclictest3928227-21kworker/u8:2+events_unbound11:47:421
3727861994542,3cyclictest4005051-21kworker/u8:1+flush-179:011:45:290
3727861994542,2cyclictest3800137-21kworker/u8:3+events_unbound08:30:140
3727861994541,3cyclictest3743947-21apt-get07:22:560
3727861994539,4cyclictest76405-21systemd-journal08:00:030
3727872994440,3cyclictest3882466-21kworker/u8:1+events_unbound10:28:123
3727872994440,3cyclictest3759167-21kworker/u8:2+flush-179:008:12:513
3727868994441,2cyclictest3882466-21kworker/u8:1+events_unbound10:10:092
3727868994441,2cyclictest3815120-21kworker/2:0+pm08:50:512
3727866994442,2cyclictest3855561-21kworker/u8:2+events_unbound10:06:141
3727866994440,3cyclictest3943107-21kworker/u8:1+events_unbound11:22:011
3727861994441,2cyclictest3800137-21kworker/u8:3+flush-179:008:20:250
3727861994439,4cyclictest247560-21ThreadPoolForeg09:00:290
3727872994339,3cyclictest3764905-21CacheThread_Blo07:45:013
3727872994338,4cyclictest3928227-21kworker/u8:2+flush-179:011:40:323
3727868994331,1cyclictest3943293-21kworker/2:0+pm10:54:012
3727868994328,1cyclictest3881730-13chrome09:45:022
3727866994340,2cyclictest3990167-21kworker/u8:3+events_unbound11:50:491
3727866994340,2cyclictest3871261-21kworker/u8:0+flush-179:010:04:191
3727866994340,2cyclictest3871261-21kworker/u8:0+flush-179:010:04:191
3727866994340,2cyclictest3871261-21kworker/u8:0+flush-179:010:04:191
3727866994340,2cyclictest3871261-21kworker/u8:0+events_unbound09:55:181
3727866994340,2cyclictest3743888-21kworker/u8:4+flush-179:008:09:401
3727866994329,13cyclictest3928227-21kworker/u8:2+events_unbound11:04:541
3727861994340,2cyclictest3754000-21kworker/u8:1+flush-179:007:40:110
3727861994339,3cyclictest3943107-21kworker/u8:1+flush-179:011:15:380
3727861994339,3cyclictest3837367-21kworker/u8:3+events_unbound09:30:000
3727861994339,3cyclictest3834070-21apt-get08:55:120
3727861994338,4cyclictest3912645-21kworker/u8:2+events_unbound10:15:290
3727861994337,4cyclictest3928227-21kworker/u8:2+flush-179:012:08:340
3727872994240,2cyclictest3928227-21kworker/u8:2+events_unbound11:10:293
3727872994240,2cyclictest3928227-21kworker/u8:2+events_unbound11:10:283
3727872994239,2cyclictest4045721-21kworker/u8:1+events_unbound12:35:013
3727872994239,2cyclictest4045721-21kworker/u8:1+events_unbound12:35:013
3727872994239,2cyclictest3928227-21kworker/u8:2+flush-179:012:05:153
3727872994239,2cyclictest3800137-21kworker/u8:3+events_unbound08:26:403
3727872994238,3cyclictest3943107-21kworker/u8:1+events_unbound11:24:593
3727868994239,2cyclictest3759167-21kworker/u8:2+flush-179:008:45:262
3727866994239,2cyclictest3928227-21kworker/u8:2+flush-179:011:28:321
3727866994238,3cyclictest3990167-21kworker/u8:3+flush-179:012:00:271
3727866994236,4cyclictest3919517-21ntpq10:20:141
3727861994239,2cyclictest3928227-21kworker/u8:2+flush-179:010:55:150
3727861994238,3cyclictest4036902-21kworker/u8:0+flush-179:012:20:010
3727861994238,3cyclictest3986588-21apt-get11:25:130
3727861994236,5cyclictest3984375-21python311:20:330
372786199420,41cyclictest247557-21chrome09:50:130
3727872994139,2cyclictest4036902-21kworker/u8:0+flush-179:012:17:023
3727872994137,3cyclictest3990167-21kworker/u8:3+flush-179:012:00:323
3727872994137,3cyclictest3882466-21kworker/u8:1+events_unbound09:55:013
3727872994134,4cyclictest3712099-21kworker/u8:0+events_unbound07:15:203
3727868994138,2cyclictest3743888-21kworker/u8:4+flush-179:008:00:282
3727868994137,3cyclictest3974050-31munin-html11:10:342
3727868994137,3cyclictest3974050-31munin-html11:10:342
3727868994137,3cyclictest3837367-21kworker/u8:3+flush-179:009:32:062
3727866994138,2cyclictest3990167-21kworker/u8:3+flush-179:012:15:191
3727866994138,2cyclictest3871261-21kworker/u8:0+events_unbound09:34:581
3727866994137,3cyclictest3824533-21ThreadPoolForeg08:45:021
3727866994135,5cyclictest3816183-21/usr/share/muni08:35:131
3727861994138,2cyclictest3837367-21kworker/u8:3+events_unbound09:35:290
3727861994137,3cyclictest3840323-21kworker/u8:1+flush-179:009:05:210
3727861994137,3cyclictest3779845-21kworker/u8:0+events_unbound08:18:310
372786199411,39cyclictest247557-21chrome10:25:010
3727872994037,2cyclictest3928227-21kworker/u8:2+flush-179:010:35:203
3727872994037,2cyclictest3837367-21kworker/u8:3+flush-179:009:15:143
3727872994037,2cyclictest3816167-21kworker/u8:1+events_unbound08:37:593
3727872994036,3cyclictest3886256-21munin-limits09:45:353
3727868994038,1cyclictest3763845-21kworker/2:2+pm07:51:392
3727868994038,1cyclictest0-21swapper/211:25:482
3727868994037,2cyclictest3943293-21kworker/2:0+pm10:57:572
3727868994036,3cyclictest4046330-21kworker/2:2+pm12:30:022
3727868994036,2cyclictest3743397-21kworker/2:1+pm07:30:592
3727866994037,2cyclictest3912645-21kworker/u8:2+events_unbound10:15:191
3727866994037,2cyclictest3837367-21kworker/u8:3+events_unbound09:28:001
3727866994037,2cyclictest3104563-1kworker/1:1H+kblockd08:52:241
3727866994028,11cyclictest3990167-21kworker/u8:3+flush-179:012:31:551
3727861994038,2cyclictest3871261-21kworker/u8:0+flush-179:010:01:050
3727861994038,2cyclictest3871261-21kworker/u8:0+flush-179:010:01:050
3727861994038,2cyclictest3871261-21kworker/u8:0+flush-179:010:01:050
3727861994037,2cyclictest3928227-21kworker/u8:2+events_unbound10:35:150
3727861994037,2cyclictest3754000-21kworker/u8:1+flush-179:007:35:310
3727872993937,2cyclictest3928227-21kworker/u8:2+flush-179:010:55:273
3727872993934,4cyclictest3938642-21/usr/share/muni10:40:093
3727872993934,4cyclictest3938642-21/usr/share/muni10:40:093
3727872993934,4cyclictest247561-21ThreadPoolForeg08:30:343
3727868993937,1cyclictest3995935-21kworker/2:1+pm11:47:052
3727868993937,1cyclictest3892414-21kworker/2:3+pm10:43:032
3727868993937,1cyclictest3892414-21kworker/2:3+pm10:43:032
3727868993937,1cyclictest3763845-21kworker/2:2+pm08:16:282
3727868993936,2cyclictest3892414-21kworker/2:3+pm10:01:012
3727868993936,2cyclictest3892414-21kworker/2:3+pm10:01:012
3727868993936,2cyclictest3892414-21kworker/2:3+pm10:01:002
3727868993936,2cyclictest3837367-21kworker/u8:3+flush-179:009:10:322
3727868993936,2cyclictest3763845-21kworker/2:2+pm08:31:072
3727868993936,2cyclictest3763845-21kworker/2:2+pm08:27:252
3727868993936,2cyclictest3743888-21kworker/u8:4+flush-179:008:08:522
3727868993935,3cyclictest3928227-21kworker/u8:2+flush-179:011:30:142
3727868993935,3cyclictest3727302-21kworker/u8:1+flush-179:007:20:302
3727868993935,2cyclictest3743397-21kworker/2:1+pm07:28:302
3727868993934,3cyclictest3763845-21kworker/2:2+pm08:21:122
3727866993936,2cyclictest3928227-21kworker/u8:2+events_unbound11:32:151
3727866993936,2cyclictest3800137-21kworker/u8:3+events_unbound08:16:271
3727866993936,1cyclictest0-21swapper/110:10:181
3727866993935,3cyclictest3759167-21kworker/u8:2+events_unbound08:44:181
372786699391,37cyclictest247557-21chrome08:58:431
372786199397,31cyclictest247563-13Compositor11:05:480
3727861993936,2cyclictest3928227-21kworker/u8:2+flush-179:010:40:300
3727861993936,2cyclictest3928227-21kworker/u8:2+flush-179:010:40:290
3727861993936,2cyclictest3754000-21kworker/u8:1+events_unbound07:55:140
3727861993935,3cyclictest3948817-21munin-update10:50:050
3727872993836,2cyclictest3928227-21kworker/u8:2+events_unbound11:55:163
3727872993836,2cyclictest3800137-21kworker/u8:3+events_unbound08:20:293
3727872993836,1cyclictest3815969-21kworker/3:2+pm08:54:593
3727872993835,2cyclictest3943107-21kworker/u8:1+events_unbound11:15:293
3727872993835,2cyclictest3749117-21kworker/u8:0+events_unbound07:32:343
3727868993836,2cyclictest3815120-21kworker/2:0+pm09:27:422
3727868993836,1cyclictest4046330-21kworker/2:2+pm12:37:532
3727868993836,1cyclictest4046330-21kworker/2:2+pm12:37:522
3727868993836,1cyclictest4046330-21kworker/2:2+pm12:26:202
3727868993836,1cyclictest4015773-21kworker/2:0+pm12:21:442
3727868993836,1cyclictest4015773-21kworker/2:0+pm11:57:592
3727868993836,1cyclictest3943293-21kworker/2:0+pm11:08:462
3727868993836,1cyclictest3892414-21kworker/2:3+pm10:16:122
3727868993836,1cyclictest3815120-21kworker/2:0+pm09:39:352
3727868993836,1cyclictest3815120-21kworker/2:0+pm09:20:182
3727868993836,1cyclictest3815120-21kworker/2:0+pm09:05:342
3727868993836,1cyclictest3815120-21kworker/2:0+pm08:41:302
3727868993836,1cyclictest3763845-21kworker/2:2+pm07:59:062
3727868993836,1cyclictest3763845-21kworker/2:2+pm07:46:002
3727868993835,2cyclictest3763845-21kworker/2:2+pm08:35:052
3727868993835,2cyclictest3763845-21kworker/2:2+pm08:10:052
3727868993834,3cyclictest3932526-31munin-html10:30:352
3727868993834,3cyclictest3825408-21kworker/u8:0+flush-179:008:55:202
3727866993836,1cyclictest3985094-21kworker/1:0+pm12:05:111
3727866993836,1cyclictest3696481-21kworker/1:2+pm08:33:031
3727866993835,2cyclictest3832647-21kworker/1:0+pm09:14:341
3727866993835,2cyclictest3759167-21kworker/u8:2+events_unbound08:11:171
3727866993834,3cyclictest3882466-21kworker/u8:1+events_unbound10:29:201
3727866993833,2cyclictest3871261-21kworker/u8:0+events_unbound09:45:111
3727866993827,10cyclictest3928227-21kworker/u8:2+events_unbound11:43:061
3727861993834,3cyclictest4051331-21kworker/u8:2+flush-179:012:30:100
372786199380,37cyclictest247557-21chrome08:25:300
372786199380,37cyclictest247557-21chrome07:15:060
3727872993735,2cyclictest3743888-21kworker/u8:4+events_unbound08:06:183
3727872993734,2cyclictest3928227-21kworker/u8:2+events_unbound11:27:033
3727872993733,3cyclictest3743709-31munin-html07:20:373
3727868993735,1cyclictest4015773-21kworker/2:0+pm12:15:192
3727868993735,1cyclictest4015773-21kworker/2:0+pm12:01:532
3727868993735,1cyclictest3995935-21kworker/2:1+pm11:40:032
3727868993735,1cyclictest3979813-21kworker/2:2+pm11:35:322
3727868993735,1cyclictest3815120-21kworker/2:0+pm09:40:542
3727868993734,2cyclictest2770997-1kworker/2:1H+kblockd07:35:252
3727868993713,23cyclictest247557-21chrome11:22:492
3727866993735,2cyclictest3749117-21kworker/u8:0+flush-179:007:29:521
3727866993735,1cyclictest3938431-21kworker/1:2+pm10:43:331
3727866993735,1cyclictest3938431-21kworker/1:2+pm10:43:331
3727866993734,2cyclictest3727302-21kworker/u8:1+events_unbound07:20:221
3727866993734,2cyclictest3104563-1kworker/1:1H+kblockd09:00:061
3727866993733,3cyclictest3800137-21kworker/u8:3+flush-179:008:29:381
3727866993732,4cyclictest3943107-21kworker/u8:1+events_unbound11:19:201
3727866993727,10cyclictest3990167-21kworker/u8:3+events_unbound12:22:391
3727866993726,11cyclictest3932891-21kworker/u8:3+flush-179:010:48:571
3727866993726,10cyclictest3990167-21kworker/u8:3+flush-179:012:14:521
3727861993735,1cyclictest3815609-21kworker/0:2+pm08:43:590
3727861993734,2cyclictest3717146-1kworker/0:1H+kblockd10:13:590
3727861993734,2cyclictest3717146-1kworker/0:1H+kblockd10:09:280
3727861993734,2cyclictest3717146-1kworker/0:1H+kblockd07:32:590
3727861993727,9cyclictest3717146-1kworker/0:1H+kblockd11:36:340
3727872993634,2cyclictest3882466-21kworker/u8:1+flush-179:010:20:193
3727872993634,2cyclictest3840323-21kworker/u8:1+events_unbound09:03:443
3727872993633,2cyclictest4035525-31munin-html12:10:333
3727868993634,1cyclictest3815120-21kworker/2:0+pm09:01:502
3727866993633,2cyclictest3928227-21kworker/u8:2+events_unbound10:52:331
3727866993633,2cyclictest3840323-21kworker/u8:1+events_unbound09:17:191
3727866993632,3cyclictest3855561-21kworker/u8:2+events_unbound09:36:501
3727866993632,3cyclictest3743888-21kworker/u8:4+events_unbound07:56:181
3727866993632,3cyclictest3712099-21kworker/u8:0+flush-179:007:17:171
3727866993631,3cyclictest3754597-21/usr/share/muni07:35:021
3727866993619,16cyclictest107350-21ntpd07:32:081
3727861993634,1cyclictest3717146-1kworker/0:1H+kblockd09:11:110
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3727861993633,2cyclictest3932891-21kworker/u8:3+flush-179:011:13:190
3727861993632,3cyclictest3928227-21kworker/u8:2+events_unbound10:34:050
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3727872993531,3cyclictest3882466-21kworker/u8:1+flush-179:010:00:283
3727872993531,3cyclictest3882466-21kworker/u8:1+flush-179:010:00:273
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3727866993532,2cyclictest3104563-1kworker/1:1H+kblockd11:11:121
3727866993531,3cyclictest3805359-21kworker/u8:4+flush-179:008:21:161
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3727861993230,2cyclictest3959073-21kworker/u8:0+events_unbound11:40:170
3727861993229,2cyclictest3943778-21ThreadPoolForeg10:45:010
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3727861993127,3cyclictest3717146-1kworker/0:1H+kblockd11:01:350
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