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2025-09-17 - 09:36
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Wed Sep 17, 2025 00:45:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
464499254,13cyclictest0-21swapper/019:15:220
4644992414,5cyclictest0-21swapper/020:55:170
465699230,20cyclictest0-21swapper/222:22:072
4651992214,4cyclictest0-21swapper/122:37:031
4656992112,0cyclictest0-21swapper/223:10:562
464499206,13cyclictest0-21swapper/023:50:470
464499200,9cyclictest0-21swapper/000:10:490
465699192,2cyclictest32065-21proc_pri21:50:212
465699192,2cyclictest1764-21nfsd420:00:192
4656991917,1cyclictest0-21swapper/219:36:442
465699190,2cyclictest4528-21H212:26:332
465699190,16cyclictest4528-21H212:26:332
464499190,3cyclictest0-21swapper/020:05:180
465699182,15cyclictest28-21ksoftirqd/222:30:442
4656991816,1cyclictest0-21swapper/223:30:192
4656991816,1cyclictest0-21swapper/221:28:562
4656991815,2cyclictest20956-21processes21:30:222
4656991814,3cyclictest4536-21H212:26:332
4656991813,3cyclictest10988-21nfsd420:15:212
465699180,17cyclictest4538-21H212:26:332
465699180,17cyclictest4523-21H212:26:332
465699180,17cyclictest3076-21rs:main2
465699180,17cyclictest1886-21chrt20:56:332
465699180,15cyclictest4528-21H212:26:332
465199183,1cyclictest0-21swapper/122:19:011
465199182,15cyclictest0-21swapper/123:09:541
4651991816,1cyclictest4532-21H212:26:331
4651991814,3cyclictest7068-21anvil19:16:111
4651991813,1cyclictest0-21swapper/120:40:581
465199181,2cyclictest4581-21H212:26:331
465199181,2cyclictest4526-21H212:26:331
465199180,2cyclictest4581-21H212:26:331
465199180,2cyclictest4532-21H212:26:331
465199180,2cyclictest4532-21H212:26:331
465199180,1cyclictest0-21swapper/100:33:321
465199180,16cyclictest16272-21cut22:25:001
4644991816,1cyclictest9-21ksoftirqd/020:31:080
4644991814,3cyclictest4532-21H212:26:330
4644991814,3cyclictest0-21swapper/021:20:230
464499180,17cyclictest454-21plymouthd21:10:010
464499180,15cyclictest4523-21H212:26:330
465699172,15cyclictest28-21ksoftirqd/223:06:092
4656991715,1cyclictest3441-21gsd-color21:46:022
4656991715,1cyclictest1596-21cpuspeed_turbos22:55:142
4656991715,1cyclictest0-21swapper/221:12:202
4656991715,1cyclictest0-21swapper/200:15:482
4656991714,2cyclictest4536-21H212:26:332
4656991714,2cyclictest4526-21H212:26:332
4656991714,2cyclictest4523-21H212:26:332
4656991714,2cyclictest29852-21cat20:50:152
4656991714,2cyclictest27343-21/usr/sbin/munin19:50:152
4656991714,2cyclictest26215-21cat23:35:232
4656991713,1cyclictest0-21swapper/200:27:322
465699171,2cyclictest31084-21/usr/sbin/munin22:50:192
465699170,2cyclictest995-21irqbalance19:21:132
465699170,2cyclictest7976-21grep20:10:192
465699170,2cyclictest6187-21perf00:00:012
465699170,2cyclictest5716-21sshd20:07:252
465699170,2cyclictest4581-21H212:26:332
465699170,2cyclictest4528-21H212:26:332
465699170,2cyclictest24087-21latency_hist19:45:022
465699170,2cyclictest19371-21missed_timers20:30:182
465699170,2cyclictest16825-21sort19:30:202
465699170,2cyclictest16755-21tr20:25:192
465699170,2cyclictest15141-21cat21:20:182
465699170,2cyclictest13657-21if_eno120:20:172
465699170,2cyclictest13657-21if_eno120:20:162
465699170,16cyclictest7612-21vmstat21:05:232
465699170,16cyclictest4581-21H212:26:332
465699170,16cyclictest4538-21H212:26:332
465699170,16cyclictest4538-21H212:26:332
465699170,16cyclictest31878-21pzem_current23:45:172
465699170,16cyclictest28066-21ntpq20:45:192
465699170,16cyclictest22947-21fschecks_count22:35:162
465699170,16cyclictest22199-21/usr/sbin/munin21:35:142
465699170,16cyclictest11841-21expr21:15:162
465699170,16cyclictest10740-21nvmesmart_nvme000:05:192
465699170,15cyclictest4532-21H212:26:332
465699170,14cyclictest0-21swapper/223:21:172
465199179,4cyclictest0-21swapper/121:15:341
4651991716,0cyclictest0-21swapper/119:25:081
4651991714,2cyclictest8390-21cat21:10:001
4651991714,2cyclictest6206-21sendmail00:00:001
4651991714,2cyclictest4538-21H212:26:331
4651991714,2cyclictest4538-21H212:26:331
4651991714,2cyclictest4532-21H212:26:331
4651991714,2cyclictest4528-21H212:26:331
4651991714,2cyclictest4528-21H212:26:331
4651991714,2cyclictest4039-21expr20:05:181
4651991714,2cyclictest30370-21cut20:50:181
4651991714,2cyclictest2196-21nvmesmart_nvme023:50:201
4651991714,2cyclictest19835-21sh23:25:201
4651991714,2cyclictest13465-21expr23:15:131
4651991714,2cyclictest0-21swapper/119:21:231
465199171,1cyclictest0-21swapper/120:45:211
465199171,15cyclictest0-21swapper/123:00:211
465199171,0cyclictest0-21swapper/119:11:351
465199170,2cyclictest4528-21H212:26:331
465199170,2cyclictest4526-21H212:26:331
465199170,2cyclictest4526-21H212:26:331
465199170,2cyclictest4523-21H212:26:331
465199170,2cyclictest11198-21timerwakeupswit00:05:231
465199170,1cyclictest4523-21H212:26:331
465199170,17cyclictest0-21swapper/123:12:411
465199170,16cyclictest4528-21H212:26:331
465199170,16cyclictest4523-21H212:26:331
465199170,16cyclictest30083-21snapd22:56:491
465199170,16cyclictest23809-21munin-run23:35:001
465199170,16cyclictest21928-21latency_hist21:35:011
465199170,16cyclictest1625-21/usr/sbin/munin21:55:151
465199170,16cyclictest15639-21mailstats21:20:221
465199170,16cyclictest13875-21sed00:10:201
465199170,16cyclictest1355-21lxd19:56:561
465199170,15cyclictest4581-21H212:26:331
465199170,15cyclictest4528-21H212:26:331
4644991715,1cyclictest242242chrt21:36:110
4644991715,1cyclictest179612chrt23:24:230
4644991714,2cyclictest9406-21chrt23:06:530
4644991714,2cyclictest4532-21H212:26:330
4644991714,2cyclictest4526-21H212:26:330
4644991714,2cyclictest25922-21sensors23:35:210
4644991714,2cyclictest24638-21cron22:39:010
4644991714,2cyclictest22575-21ntpq23:30:220
4644991714,2cyclictest17380-21munin-plugin-st00:20:000
4644991713,3cyclictest4526-21H212:26:330
464499171,15cyclictest4581-21H212:26:330
464499171,15cyclictest4526-21H212:26:330
4644991711,2cyclictest10876-21cron21:15:000
464499170,2cyclictest7513-21kernelversion00:00:160
464499170,2cyclictest4581-21H212:26:330
464499170,2cyclictest28503-21cut21:45:160
464499170,2cyclictest28340-21sessionclean00:38:590
464499170,2cyclictest24400-21expr20:40:150
464499170,2cyclictest1304-21lxd19:22:560
464499170,2cyclictest12683-21gdbus20:20:020
464499170,2cyclictest12683-21gdbus20:20:010
464499170,2cyclictest1-21systemd22:25:010
464499170,2cyclictest1-21systemd22:25:000
464499170,2cyclictest1202-21tr21:55:140
464499170,1cyclictest4526-21H212:26:330
464499170,1cyclictest4523-21H212:26:330
464499170,16cyclictest9580-21gpgconf20:15:010
464499170,16cyclictest5220-21ntpq23:55:170
464499170,16cyclictest32357-21timerandwakeup21:50:230
464499170,16cyclictest31745-21grep23:45:170
464499170,16cyclictest2904-21grep22:55:200
464499170,16cyclictest28881-21nfsd423:40:210
464499170,16cyclictest25369-21expr21:40:160
464499170,16cyclictest22008-21ps00:25:220
464499170,16cyclictest20878-21ntpq21:30:190
464499170,16cyclictest11806-21sed00:09:010
464499170,16cyclictest0-21swapper/019:26:240
464499170,15cyclictest4538-21H212:26:330
4656991614,1cyclictest22470-21awk20:35:192
4656991614,1cyclictest0-21swapper/223:25:302
4656991614,1cyclictest0-21swapper/222:25:012
4656991614,1cyclictest0-21swapper/222:10:122
4656991614,1cyclictest0-21swapper/221:40:152
4656991614,1cyclictest0-21swapper/219:45:142
4656991614,1cyclictest0-21swapper/200:40:002
4656991614,1cyclictest0-21swapper/200:20:192
4656991613,2cyclictest4520-21switchtime21:00:232
465699160,1cyclictest0-21swapper/221:55:152
4651991614,1cyclictest4536-21H212:26:331
4651991614,1cyclictest0-21swapper/122:50:021
4651991614,1cyclictest0-21swapper/122:30:181
4651991614,1cyclictest0-21swapper/121:50:141
4651991614,1cyclictest0-21swapper/121:10:131
4651991614,1cyclictest0-21swapper/120:30:051
4651991614,1cyclictest0-21swapper/119:50:141
4651991614,1cyclictest0-21swapper/100:22:241
4651991613,2cyclictest4526-21H212:26:331
465199160,1cyclictest16270-21nfsd400:15:191
465199160,1cyclictest0-21swapper/120:00:151
465199160,15cyclictest8314-21ls22:10:121
465199160,15cyclictest7510-21kernelversion00:00:171
465199160,15cyclictest28484-21tune2fs21:45:151
465199160,15cyclictest26489-21expr00:35:151
465199160,15cyclictest17178-21ls21:25:171
465199160,15cyclictest0-21swapper/121:40:161
4644991614,1cyclictest0-21swapper/023:00:140
4644991614,1cyclictest0-21swapper/021:00:140
4644991614,1cyclictest0-21swapper/020:00:100
4644991614,1cyclictest0-21swapper/019:35:020
4644991614,1cyclictest0-21swapper/019:10:160
4644991613,2cyclictest4581-21H212:26:330
464499160,1cyclictest29478-21cpuspeed_turbos20:50:140
464499160,1cyclictest21322-21timerandwakeup22:30:210
464499160,1cyclictest0-21swapper/023:25:220
464499160,1cyclictest0-21swapper/020:45:190
464499160,1cyclictest0-21swapper/000:20:150
464499160,15cyclictest4536-21H212:26:330
464499160,15cyclictest27613-21ls19:50:140
464499160,15cyclictest11288-21apache_processe21:15:140
464499160,15cyclictest0-21swapper/022:15:150
464499160,15cyclictest0-21swapper/022:10:150
464499160,15cyclictest0-21swapper/022:06:330
464499160,0cyclictest0-21swapper/022:53:220
4651991513,1cyclictest68262chrt22:05:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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