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2025-10-19 - 01:19
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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 all highest latencies:
System rackdslot0.osadl.org (updated Sat Oct 18, 2025 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1159699248,16cyclictest16728-21kworker/2:012:38:122
1159499240,18cyclictest0-21swapper/011:45:010
1159699222,13cyclictest26715-21apt-key11:25:012
1159699203,11cyclictest0-21swapper/211:50:002
1159499206,13cyclictest0-21swapper/007:39:380
11594992018,1cyclictest0-21swapper/010:30:220
11596991917,1cyclictest28-21ksoftirqd/207:11:572
11596991917,1cyclictest0-21swapper/212:17:492
11596991917,1cyclictest0-21swapper/208:35:392
11596991914,4cyclictest0-21swapper/210:42:262
1159699190,2cyclictest4581-21H212:26:332
1159699190,18cyclictest0-21swapper/209:21:282
1159699190,17cyclictest4528-21H212:26:332
1159699190,16cyclictest4593-21H212:26:332
1159699190,16cyclictest4526-21H212:26:332
1159699190,0cyclictest0-21swapper/207:40:192
1159599193,10cyclictest4677-21munin-run12:40:001
11595991917,1cyclictest0-21swapper/108:28:411
1159499193,15cyclictest9-21ksoftirqd/009:03:010
11594991917,1cyclictest0-21swapper/007:20:080
1159499190,1cyclictest0-21swapper/008:51:070
1159499190,18cyclictest0-21swapper/011:58:320
11596991816,1cyclictest0-21swapper/212:05:312
11596991815,2cyclictest4538-21H212:26:332
11596991814,3cyclictest1079-21gdbus10:30:232
1159699180,2cyclictest4536-21H212:26:332
1159699180,17cyclictest8977-21cat08:55:232
1159699180,16cyclictest4523-21H212:26:332
1159699180,0cyclictest0-21swapper/211:52:262
1159599182,2cyclictest1090-21expr09:40:181
1159599182,15cyclictest21-21ksoftirqd/107:17:011
11595991816,1cyclictest21-21ksoftirqd/108:41:121
11595991816,1cyclictest21-21ksoftirqd/108:30:091
11595991816,1cyclictest0-21swapper/108:46:451
11595991814,3cyclictest4534-21H212:26:331
1159599180,3cyclictest4536-21H212:26:331
1159599180,3cyclictest414-20systemd-journal11:17:001
1159599180,2cyclictest4538-21H212:26:331
1159599180,2cyclictest4526-21H212:26:331
1159599180,2cyclictest4526-21H212:26:331
1159599180,17cyclictest9420-21cat09:55:191
1159599180,17cyclictest4536-21H212:26:331
1159599180,17cyclictest4530-21H212:26:331
1159499182,15cyclictest9-21ksoftirqd/011:23:150
1159499182,15cyclictest205842sleep009:19:460
1159499182,15cyclictest12390-21cat08:05:240
1159499182,15cyclictest0-21swapper/010:23:410
1159499182,15cyclictest0-21swapper/007:16:250
11594991817,1cyclictest0-21swapper/010:20:010
11594991816,1cyclictest9-21ksoftirqd/007:41:350
11594991815,2cyclictest4530-21H212:26:330
11594991814,3cyclictest4538-21H212:26:330
1159499180,2cyclictest4581-21H212:26:330
1159499180,2cyclictest4536-21H212:26:330
1159499180,2cyclictest4534-21H212:26:330
1159499180,2cyclictest4530-21H212:26:330
1159499180,17cyclictest1079-21gdbus07:10:230
1159499180,15cyclictest4581-21H212:26:330
1159499180,15cyclictest4526-21H212:26:330
1159699172,15cyclictest28-21ksoftirqd/211:09:582
11596991715,1cyclictest6676-21uname07:55:212
11596991715,1cyclictest0-21swapper/211:25:022
11596991715,1cyclictest0-21swapper/210:36:172
11596991714,2cyclictest4581-21H212:26:332
11596991714,2cyclictest4581-21H212:26:332
11596991714,2cyclictest4534-21H212:26:332
11596991714,2cyclictest31552-21ntp_offset11:30:192
11596991714,2cyclictest30001-21snapd09:44:192
11596991714,2cyclictest21585-21nvmesmart_nvme007:25:212
11596991714,2cyclictest20707-21switchtime08:20:232
11596991714,2cyclictest19365-21missed_timers09:15:182
11596991714,2cyclictest11555-21systemctl09:00:272
1159699171,15cyclictest19634-21dpkg10:15:012
1159699170,2cyclictest9742-21timerwakeupswit08:00:222
1159699170,2cyclictest4593-21H212:26:332
1159699170,2cyclictest4530-21H212:26:332
1159699170,2cyclictest4528-21H212:26:332
1159699170,2cyclictest414-20systemd-journal07:49:562
1159699170,2cyclictest29821-21df09:35:152
1159699170,2cyclictest2550-21cron09:45:012
1159699170,1cyclictest7895-21grep10:50:162
1159699170,16cyclictest7749-21master09:52:312
1159699170,16cyclictest4593-21H212:26:332
1159699170,16cyclictest4581-21H212:26:332
1159699170,16cyclictest4530-21H212:26:332
1159699170,16cyclictest4530-21H212:26:332
1159699170,16cyclictest4523-21H212:26:332
1159699170,16cyclictest3441-21gsd-color07:39:282
1159699170,16cyclictest15683-21timerwakeupswit10:05:252
1159699170,16cyclictest15556-21/usr/sbin/munin09:10:142
1159699170,16cyclictest14820-21postgres11:01:462
1159699170,16cyclictest0-21swapper/208:10:012
11595991715,1cyclictest7635-21missed_timers11:45:171
11595991715,1cyclictest21-21ksoftirqd/107:51:061
11595991714,2cyclictest4789-21cpuspeed_turbos10:45:141
11595991714,2cyclictest4538-21H212:26:331
11595991714,2cyclictest31854-21latency10:35:201
11595991714,2cyclictest30608-21taskset12:26:161
11595991714,2cyclictest29586-21taskset11:28:181
11595991714,2cyclictest25979-21sed11:20:231
11595991714,2cyclictest19166-21cpuspeed_turbos08:20:161
11595991714,2cyclictest15029-21grep10:05:191
11595991714,2cyclictest13793-21timerandwakeup11:55:211
11595991713,3cyclictest4536-21H212:26:331
11595991713,2cyclictest14107-21nfsd411:00:211
1159599171,15cyclictest4536-21H212:26:331
1159599170,2cyclictest4581-21H212:26:331
1159599170,2cyclictest4534-21H212:26:331
1159599170,2cyclictest4526-21H212:26:331
1159599170,2cyclictest4526-21H212:26:331
1159599170,2cyclictest4523-21H212:26:331
1159599170,2cyclictest25703-21timerwakeupswit09:25:231
1159599170,2cyclictest18952-21systemctl07:20:221
1159599170,2cyclictest18042-21sed08:15:331
1159599170,2cyclictest11407-21ntp_offset10:55:231
1159599170,16cyclictest9374-21ps08:00:201
1159599170,16cyclictest4593-21H212:26:331
1159599170,16cyclictest4523-21H212:26:331
1159599170,16cyclictest3076-21rs:main1
1159599170,16cyclictest28824-21fschecks_time10:30:171
1159599170,16cyclictest28294-21expr08:35:151
1159599170,16cyclictest27660-21cut07:35:231
1159599170,16cyclictest16840-21awk09:10:201
1159599170,16cyclictest12158-21taskset09:03:441
1159599170,16cyclictest0-21swapper/110:20:221
1159599170,15cyclictest4593-21H212:26:331
1159499172,1cyclictest0-21swapper/012:20:180
1159499172,1cyclictest0-21swapper/009:29:590
11594991715,1cyclictest8049-21expr08:00:130
11594991715,1cyclictest0-21swapper/010:50:150
11594991715,1cyclictest0-21swapper/007:25:170
11594991714,2cyclictest9425-21ls09:55:190
11594991714,2cyclictest4957-21expr10:45:140
11594991714,2cyclictest4593-21H212:26:330
11594991714,2cyclictest26900-21expr09:30:140
11594991714,2cyclictest21895-21/usr/sbin/munin12:10:220
11594991714,2cyclictest14393-21expr10:05:150
1159499170,2cyclictest4528-21H212:26:330
1159499170,2cyclictest2421-21grep12:35:170
1159499170,1cyclictest0-21swapper/012:19:010
1159499170,1cyclictest0-21swapper/011:02:350
1159499170,16cyclictest4536-21H212:26:330
1159499170,16cyclictest4534-21H212:26:330
1159499170,16cyclictest4534-21H212:26:330
1159499170,16cyclictest4530-21H212:26:330
1159499170,16cyclictest4530-21H212:26:330
1159499170,16cyclictest4526-21H212:26:330
1159499170,16cyclictest32605-21ls09:40:140
1159499170,16cyclictest32364-21grep07:45:170
1159499170,16cyclictest29319-21grep09:35:140
1159499170,16cyclictest25333-21munin-plugin-st07:35:010
1159499170,16cyclictest16999-21smartctl08:15:170
1159499170,16cyclictest1678-21expr08:45:150
1159499170,16cyclictest16155-21smartctl12:00:200
1159499170,16cyclictest14158-21processes09:05:220
1159499170,15cyclictest4528-21H212:26:330
11596991614,1cyclictest4536-21H212:26:332
11596991614,1cyclictest0-21swapper/209:05:192
11596991613,2cyclictest4523-21H212:26:332
11596991613,2cyclictest0-21swapper/207:54:072
1159699161,15cyclictest0-21swapper/209:34:172
1159699160,1cyclictest0-21swapper/209:25:182
1159699160,15cyclictest12005-21apt-get11:55:122
1159699160,15cyclictest10016-21/usr/sbin/munin10:55:162
1159699160,15cyclictest0-21swapper/212:30:152
1159699160,15cyclictest0-21swapper/210:45:142
1159699160,15cyclictest0-21swapper/210:00:202
1159699160,15cyclictest0-21swapper/209:55:162
11595991614,1cyclictest1845-21systemd-journal09:45:011
11595991614,1cyclictest0-21swapper/112:10:091
11595991614,1cyclictest0-21swapper/111:05:241
11595991614,1cyclictest0-21swapper/109:05:241
11595991614,1cyclictest0-21swapper/108:50:031
11595991614,1cyclictest0-21swapper/107:55:231
1159599160,2cyclictest23256-21expr12:15:141
1159599160,15cyclictest31760-21cpuspeed_turbos07:45:161
1159599160,15cyclictest29322-21grep09:35:141
1159599160,15cyclictest26756-21grep09:30:141
1159599160,15cyclictest22406-21grep09:20:191
1159599160,15cyclictest18393-21cpuspeed_turbos09:15:141
1159599160,15cyclictest0-21swapper/111:50:251
1159599160,15cyclictest0-21swapper/111:30:141
1159599160,15cyclictest0-21swapper/108:55:191
1159599160,15cyclictest0-21swapper/108:10:151
11594991614,1cyclictest6771-21expr11:45:130
11594991614,1cyclictest10963-21expr10:55:220
11594991614,1cyclictest0-21swapper/012:25:150
11594991614,1cyclictest0-21swapper/012:05:230
11594991614,1cyclictest0-21swapper/011:31:470
11594991614,1cyclictest0-21swapper/008:35:180
1159499160,1cyclictest4530-21H212:26:330
1159499160,1cyclictest0-21swapper/011:05:150
1159499160,15cyclictest1667-21cpuspeed_turbos10:40:160
1159499160,15cyclictest0-21swapper/009:50:010
1159499160,15cyclictest0-21swapper/009:10:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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