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2026-04-03 - 22:44
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Fri Apr 03, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
534599261,6cyclictest0-21swapper/108:40:011
534599232,2cyclictest9391-21cstates09:10:141
5345992215,6cyclictest20924-21seq11:20:541
534599221,1cyclictest0-21swapper/108:23:511
534599220,4cyclictest455-21plymouthd10:24:441
534599220,2cyclictest9675-21grep07:15:161
534599220,2cyclictest4705-21nfsd411:50:171
534599220,2cyclictest24738-21expr11:30:131
534599220,2cyclictest14615-21apache_accesses09:20:101
534599220,20cyclictest0-21swapper/107:26:481
534599220,1cyclictest0-21swapper/110:40:011
534599220,1cyclictest0-21swapper/107:45:011
534599220,16cyclictest18759-21sed07:30:201
534599220,16cyclictest18759-21sed07:30:201
534599220,16cyclictest1067-21proc_pri09:50:201
534599220,14cyclictest0-21swapper/109:15:171
534599212,1cyclictest0-21swapper/108:41:051
5345992114,6cyclictest9274-21cstates10:05:151
5345992114,6cyclictest31217-21acpi07:55:111
5345992114,6cyclictest19987-21expr08:30:171
5345992114,6cyclictest19299-21vmstat09:25:211
5345992113,7cyclictest4900-21ntp_kernel_pll_09:00:181
534599210,3cyclictest12895-21sort11:09:011
534599210,2cyclictest9760-21cat12:00:121
534599210,2cyclictest6286-21expr07:10:141
534599210,2cyclictest5936-21nfsd408:05:171
534599210,2cyclictest30639-21sed10:40:201
534599210,2cyclictest24872-21awk09:35:181
534599210,2cyclictest21020-21python312:20:001
534599210,2cyclictest12138-21fschecks_count07:20:131
534599210,1cyclictest21365-21nfsd410:25:171
534599210,16cyclictest8781-21latency_hist09:10:001
534599210,15cyclictest28355-21awk11:35:161
534599210,15cyclictest0-21swapper/112:30:191
534599210,15cyclictest0-21swapper/110:50:131
534099210,20cyclictest843-21systemd-network11:48:270
5345992014,5cyclictest3954-21VM22:10:211
5345992014,5cyclictest2952-21sed11:50:001
5345992014,5cyclictest0-21swapper/111:55:131
5345992014,5cyclictest0-21swapper/110:00:181
5345992014,5cyclictest0-21swapper/109:55:211
5345992014,5cyclictest0-21swapper/109:30:021
5345992014,5cyclictest0-21swapper/108:25:141
5345992013,6cyclictest16002-21fschecks_count12:10:141
5345992013,6cyclictest0-21swapper/110:59:121
534599201,1cyclictest15476-21chrt11:11:341
534599200,2cyclictest8679-21cat08:10:181
534599200,2cyclictest455-21plymouthd07:50:121
534599200,2cyclictest29391-21chrt08:47:241
534599200,2cyclictest22869-21nfsd411:25:181
534599200,2cyclictest18515-21run-parts11:19:591
534599200,1cyclictest0-21swapper/112:39:471
534599200,1cyclictest0-21swapper/108:50:181
534599200,19cyclictest0-21swapper/110:48:201
534599200,16cyclictest3989-21H222:10:211
534599200,15cyclictest20896-21nfsd407:35:181
534599200,0cyclictest0-21swapper/107:48:401
5340992018,1cyclictest0-21swapper/010:35:010
534099200,17cyclictest0-21swapper/007:27:340
535199193,15cyclictest28-21ksoftirqd/210:45:152
535199192,16cyclictest3256-21apache208:54:362
535199192,11cyclictest21060-21munin-run12:20:002
5351991917,1cyclictest0-21swapper/208:26:482
5345991914,5cyclictest0-21swapper/111:44:481
5345991914,4cyclictest0-21swapper/112:05:141
5345991914,4cyclictest0-21swapper/109:42:431
5345991913,5cyclictest23133-21ntp_kernel_pll_12:20:181
5345991913,5cyclictest0-21swapper/110:15:131
534599190,1cyclictest0-21swapper/108:55:171
534599190,18cyclictest0-21swapper/110:32:291
534599190,18cyclictest0-21swapper/108:16:311
534599190,15cyclictest0-21swapper/111:00:161
534099192,2cyclictest4983-21proc_pri09:00:200
534099192,16cyclictest0-21swapper/009:20:170
5340991914,2cyclictest4035-21H222:10:210
534099191,3cyclictest0-21swapper/010:59:350
5351991815,2cyclictest3053-21systemd-logind11:42:522
5351991815,2cyclictest10349-21nfsd409:10:182
5351991815,2cyclictest0-21swapper/208:08:142
5345991810,7cyclictest25825-21nfsd412:25:171
534599180,0cyclictest0-21swapper/110:10:191
5340991816,1cyclictest0-21swapper/008:13:100
5340991815,2cyclictest4906-21nvmesmart_nvme011:50:190
5340991815,1cyclictest0-21swapper/008:45:010
5340991814,3cyclictest426-21systemd-udevd09:46:520
534099181,16cyclictest12642-21chrt08:19:210
534099180,3cyclictest0-21swapper/009:40:380
534099180,17cyclictest17104-21uname11:15:150
5351991715,2cyclictest28-21ksoftirqd/211:33:272
5351991715,1cyclictest0-21swapper/211:57:042
5351991715,1cyclictest0-21swapper/210:40:162
5351991715,1cyclictest0-21swapper/209:35:002
5351991714,2cyclictest8841-21gdbus10:05:022
5351991714,2cyclictest7383-21cron11:00:002
5351991714,2cyclictest27788-21cut11:35:142
5351991714,2cyclictest25349-21/usr/sbin/munin07:45:142
5351991714,2cyclictest23534-21latency07:40:172
5351991714,2cyclictest17794-21python312:15:002
5351991714,2cyclictest14210-21missed_timers08:20:162
5351991714,2cyclictest10151-21lxd08:10:412
535199170,3cyclictest11887-21/usr/sbin/munin10:10:222
535199170,2cyclictest9077-21grep11:00:172
535199170,2cyclictest6739-21expr09:05:142
535199170,2cyclictest3983-21H222:10:212
535199170,2cyclictest28940-21munin-run09:45:012
535199170,2cyclictest24855-21expr12:25:142
535199170,2cyclictest24697-21sed09:35:182
535199170,2cyclictest2138-21switchtime11:45:182
535199170,2cyclictest17345-21/usr/sbin/munin09:25:102
535199170,2cyclictest16518-21cron07:34:562
535199170,2cyclictest16518-21cron07:34:562
535199170,2cyclictest15031-21sendmail_mailtr11:10:192
535199170,2cyclictest1079-21cups-browsed07:35:212
535199170,2cyclictest10734-21cpuspeed_turbos11:05:112
535199170,2cyclictest0-21swapper/208:35:182
535199170,1cyclictest3985-21H222:10:212
535199170,1cyclictest3981-21H222:10:212
535199170,16cyclictest5869-21/usr/sbin/munin10:00:152
535199170,16cyclictest3991-21H222:10:212
535199170,16cyclictest3981-21H222:10:212
535199170,16cyclictest3876-21sendmail_mailtr10:50:202
535199170,16cyclictest31143-21nfsd412:35:162
535199170,16cyclictest25477-21kernelversion08:40:162
535199170,16cyclictest22421-21cron10:34:552
535199170,16cyclictest1979-21cron09:55:002
535199170,16cyclictest19617-21fschecks_time08:30:152
535199170,16cyclictest16408-21expr11:15:122
535199170,16cyclictest15807-21needreboot10:15:172
535199170,16cyclictest136102sleep207:22:452
535199170,16cyclictest10799-21cron07:17:002
535199170,15cyclictest4099-21H222:10:212
534099172,9cyclictest2110-21munin-run09:55:010
5340991716,1cyclictest9-21ksoftirqd/009:31:530
5340991715,1cyclictest0-21swapper/010:45:180
5340991714,2cyclictest4099-21H222:10:210
5340991714,2cyclictest3983-21H222:10:210
5340991714,2cyclictest3053-21systemd-logind11:26:520
5340991714,2cyclictest26812-21perf12:30:000
5340991714,2cyclictest25567-21https10:35:010
5340991714,2cyclictest15437-21chrt11:11:010
5340991714,2cyclictest15206-21gpgconf12:10:020
5340991714,2cyclictest12272-21ls09:15:140
5340991714,2cyclictest10515-21/usr/sbin/munin12:00:160
534099171,1cyclictest306802sleep007:53:340
534099170,2cyclictest4035-21H222:10:210
534099170,2cyclictest3983-21H222:10:210
534099170,2cyclictest29560-21fschecks_time10:40:140
534099170,2cyclictest2069-21systemd-udevd08:32:510
534099170,2cyclictest1856-21systemd-udevd12:32:510
534099170,1cyclictest0-21swapper/011:35:120
534099170,16cyclictest5439-21cron10:00:000
534099170,16cyclictest3981-21H222:10:210
534099170,16cyclictest31655-21grep08:50:210
534099170,16cyclictest20742-21expr07:35:170
534099170,16cyclictest1856-21systemd-udevd07:58:510
534099170,16cyclictest16830-21snapd07:15:190
534099170,16cyclictest14922-21cat10:15:130
534099170,16cyclictest13855-21timerandwakeup12:05:210
534099170,16cyclictest0-21swapper/010:50:160
534099170,15cyclictest3989-21H222:10:210
5351991614,1cyclictest32739-21acpi08:55:092
5351991614,1cyclictest30003-21basename09:45:152
5351991614,1cyclictest0-21swapper/212:05:102
5351991614,1cyclictest0-21swapper/212:00:122
5351991614,1cyclictest0-21swapper/210:20:202
5351991614,1cyclictest0-21swapper/209:20:132
5351991613,2cyclictest27918-21smartctl12:30:132
5351991613,2cyclictest1644-21/usr/sbin/munin08:00:112
535199160,1cyclictest5138-21expr11:50:212
535199160,1cyclictest0-21swapper/212:20:002
535199160,15cyclictest0-21swapper/210:25:162
535199160,15cyclictest0-21swapper/209:55:142
535199160,15cyclictest0-21swapper/208:45:122
535199160,15cyclictest0-21swapper/207:50:122
535199160,15cyclictest0-21swapper/207:25:122
5340991614,1cyclictest0-21swapper/012:35:180
5340991614,1cyclictest0-21swapper/012:15:150
5340991614,1cyclictest0-21swapper/011:08:590
5340991614,1cyclictest0-21swapper/010:22:520
5340991614,1cyclictest0-21swapper/010:10:130
5340991614,1cyclictest0-21swapper/010:05:170
5340991614,1cyclictest0-21swapper/010:00:140
5340991614,1cyclictest0-21swapper/009:05:160
5340991614,1cyclictest0-21swapper/008:55:130
5340991614,1cyclictest0-21swapper/008:45:130
534099161,1cyclictest24445-21cpuspeed_turbos11:30:130
534099160,1cyclictest0-21swapper/012:25:010
534099160,1cyclictest0-21swapper/007:47:160
534099160,15cyclictest9570-21cat09:10:140
534099160,15cyclictest24051-21ps07:40:200
534099160,15cyclictest20870-21idleruntime10:25:150
534099160,15cyclictest18271-21nfsd407:30:160
534099160,15cyclictest18271-21nfsd407:30:160
534099160,15cyclictest12392-21/usr/sbin/munin07:20:160
534099160,15cyclictest0-21swapper/011:55:000
534099160,15cyclictest0-21swapper/011:00:080
534099160,15cyclictest0-21swapper/008:37:170
535199150,1cyclictest0-21swapper/209:00:182
535199150,15cyclictest0-21swapper/210:36:172
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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