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2025-11-27 - 00:46
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Wed Nov 26, 2025 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
24012992917,11cyclictest0-21swapper/208:19:542
24012992617,0cyclictest0-21swapper/211:04:002
2401299220,18cyclictest0-21swapper/211:38:142
2401199211,2cyclictest7154-21cpuspeed_turbos08:30:141
2401299204,15cyclictest0-21swapper/208:58:032
24012992014,3cyclictest0-21swapper/211:30:212
2401299201,17cyclictest4841-21smartctl09:20:192
2401199200,16cyclictest4534-21H212:26:331
2401299192,1cyclictest0-21swapper/210:50:132
2401299192,16cyclictest8448-21taskset09:29:552
24012991917,1cyclictest0-21swapper/212:12:022
2401299190,15cyclictest0-21swapper/208:21:272
2401199192,16cyclictest1953-21taskset12:10:041
24011991916,2cyclictest1537-21nfsd408:20:191
2401199190,18cyclictest0-21swapper/112:31:471
2401199190,17cyclictest0-21swapper/108:40:211
2401099194,1cyclictest0-21swapper/008:35:260
2401099192,16cyclictest25504-21nfsd409:00:170
24010991917,1cyclictest9-21ksoftirqd/009:26:410
24010991917,1cyclictest0-21swapper/011:04:560
2401099190,18cyclictest0-21swapper/009:11:470
24012991816,1cyclictest0-21swapper/211:17:152
24012991814,3cyclictest4523-21H212:26:332
24012991814,3cyclictest10295-21fschecks_time08:35:142
24012991814,3cyclictest0-21swapper/210:29:022
2401299181,2cyclictest9120-21awk12:20:172
2401299181,2cyclictest24384-21nfsd411:50:192
2401299181,16cyclictest28697-21systemctl08:10:212
2401299180,2cyclictest4536-21H212:26:332
2401299180,17cyclictest454-21plymouthd11:25:022
2401299180,17cyclictest414-20systemd-journal08:30:022
2401299180,17cyclictest16410-21cut12:35:002
2401299180,15cyclictest4530-21H212:26:332
2401199182,15cyclictest21-21ksoftirqd/111:34:131
24011991816,1cyclictest0-21swapper/111:54:211
2401199181,16cyclictest11278-21nfsd407:40:181
2401199180,3cyclictest13976-21sed09:39:011
2401199180,17cyclictest15433-21anvil09:40:231
24010991816,1cyclictest9-21ksoftirqd/011:33:580
24010991816,1cyclictest0-21swapper/007:39:520
24010991815,2cyclictest7563-21tlsmgr08:55:100
2401099180,3cyclictest4593-21H212:26:330
2401099180,3cyclictest23286-21cpuspeed_turbos11:50:140
2401099180,17cyclictest4536-21H212:26:330
2401099180,17cyclictest26627-21cron11:00:000
2401099180,17cyclictest0-21swapper/011:15:140
24012991716,1cyclictest28-21ksoftirqd/210:10:062
24012991714,2cyclictest4377-21fschecks_time08:25:152
24012991714,2cyclictest30063-21expr11:05:122
24012991714,2cyclictest29892-21/usr/sbin/munin09:10:122
24012991714,2cyclictest28755-21cstates10:05:132
24012991714,2cyclictest26861-21ls09:05:012
24012991714,2cyclictest17227-21/usr/sbin/munin09:45:222
24012991714,2cyclictest17072-21cat12:35:132
24012991714,2cyclictest13200-21cron10:35:012
24012991714,2cyclictest10492-21/usr/sbin/munin10:30:152
2401299171,15cyclictest0-21swapper/212:25:202
2401299171,15cyclictest0-21swapper/207:20:192
2401299170,2cyclictest7082-21sshd12:16:422
2401299170,2cyclictest4538-21H212:26:332
2401299170,2cyclictest4523-21H212:26:332
2401299170,2cyclictest27447-21fgrep11:55:212
2401299170,2cyclictest21657-21grep08:00:142
2401299170,2cyclictest20288-21cut10:45:192
2401299170,2cyclictest19110-21ntp_states11:40:202
2401299170,2cyclictest18928-21tr07:55:142
2401299170,2cyclictest15491-21cut07:50:012
2401299170,2cyclictest1299-21lxd12:08:502
2401299170,1cyclictest0-21swapper/209:16:092
2401299170,16cyclictest4538-21H212:26:332
2401299170,16cyclictest4523-21H212:26:332
2401299170,16cyclictest27722-21fschecks_time07:15:182
2401299170,16cyclictest24735-21cat08:05:152
2401299170,16cyclictest2041-21sed07:25:162
2401299170,16cyclictest1738-21grep11:10:172
2401299170,16cyclictest13142-21df_inode08:40:172
2401299170,16cyclictest12158-21chrt07:42:222
2401299170,16cyclictest1079-21gdbus10:00:202
2401299170,16cyclictest0-21swapper/208:45:222
2401299170,15cyclictest0-21swapper/207:30:172
2401199172,1cyclictest0-21swapper/108:49:051
24011991715,1cyclictest22532-21chrt11:47:141
24011991715,1cyclictest0-21swapper/110:55:231
24011991715,1cyclictest0-21swapper/108:15:411
24011991714,2cyclictest4536-21H212:26:331
24011991714,2cyclictest32158-21users07:20:241
24011991714,2cyclictest27183-21grep10:00:221
24011991714,2cyclictest24416-21grep08:05:151
24011991714,2cyclictest24119-21nvmesmart_nvme009:55:191
24011991714,2cyclictest1405-21lxd09:49:041
24011991714,2cyclictest11318-21sendmail-mta08:35:221
24011991712,3cyclictest4534-21H212:26:331
2401199171,1cyclictest4593-21H212:26:331
2401199171,15cyclictest4581-21H212:26:331
2401199170,2cyclictest6544-21expr11:20:141
2401199170,2cyclictest4538-21H212:26:331
2401199170,2cyclictest4536-21H212:26:331
2401199170,2cyclictest4523-21H212:26:331
2401199170,2cyclictest30323-21cat11:05:131
2401199170,2cyclictest28883-21perl10:05:141
2401199170,2cyclictest28054-21cat09:05:161
2401199170,2cyclictest19120-21cut10:45:141
2401199170,2cyclictest1616-21nfsd411:10:171
2401199170,16cyclictest9342-21sendmail_mailst12:20:201
2401199170,16cyclictest8138-21sed07:35:171
2401199170,16cyclictest4538-21H212:26:331
2401199170,16cyclictest4532-21H212:26:331
2401199170,16cyclictest20372-21sendmail_mailst08:50:201
2401199170,16cyclictest17978-21awk12:35:171
2401199170,16cyclictest14130-21awk07:45:191
2401199170,16cyclictest11545-21fschecks_count12:25:141
2401199170,15cyclictest4530-21H212:26:331
24010991715,1cyclictest0-21swapper/011:35:280
24010991715,1cyclictest0-21swapper/007:33:430
24010991714,2cyclictest9642-21timerwakeupswit12:20:210
24010991714,2cyclictest673-21latency_hist07:25:010
24010991714,2cyclictest4593-21H212:26:330
24010991714,2cyclictest4534-21H212:26:330
24010991714,2cyclictest4534-21H212:26:330
24010991714,2cyclictest27284-21cut08:10:130
24010991714,2cyclictest15487-21apt-config08:45:020
24010991714,2cyclictest14331-21date09:40:000
2401099171,15cyclictest4534-21H212:26:330
2401099171,15cyclictest4530-21H212:26:330
2401099171,15cyclictest0-21swapper/011:49:170
2401099170,2cyclictest9783-21chrt10:25:590
2401099170,2cyclictest4703-21latency_hist12:15:010
2401099170,2cyclictest4593-21H212:26:330
2401099170,2cyclictest4534-21H212:26:330
2401099170,2cyclictest4523-21H212:26:330
2401099170,2cyclictest13377-21df07:45:150
2401099170,16cyclictest6217-21needreboot10:20:180
2401099170,16cyclictest4538-21H212:26:330
2401099170,16cyclictest4536-21H212:26:330
2401099170,16cyclictest4534-21H212:26:330
2401099170,16cyclictest4534-21H212:26:330
2401099170,16cyclictest4530-21H212:26:330
2401099170,16cyclictest4530-21H212:26:330
2401099170,16cyclictest4526-21H212:26:330
2401099170,16cyclictest19460-21latency_hist12:40:010
2401099170,16cyclictest11362-21cat09:35:010
2401099170,15cyclictest4538-21H212:26:330
2401099170,15cyclictest0-21swapper/009:49:590
2401099170,15cyclictest0-21swapper/009:40:240
24012991614,1cyclictest0-21swapper/209:40:242
24012991614,1cyclictest0-21swapper/209:05:132
24012991614,1cyclictest0-21swapper/207:10:162
24012991613,2cyclictest8889-21apache_accesses09:30:112
2401299160,1cyclictest4593-21H212:26:332
2401299160,1cyclictest0-21swapper/207:50:222
2401299160,15cyclictest8406-21nfsd407:35:182
2401299160,15cyclictest0-21swapper/209:35:172
24011991614,1cyclictest2056-21missed_timers07:25:161
24011991614,1cyclictest0-21swapper/112:15:151
24011991614,1cyclictest0-21swapper/112:00:151
24011991614,1cyclictest0-21swapper/111:40:211
24011991614,1cyclictest0-21swapper/110:35:181
24011991614,1cyclictest0-21swapper/109:30:131
24011991614,1cyclictest0-21swapper/109:15:181
24011991614,1cyclictest0-21swapper/109:00:131
24011991614,1cyclictest0-21swapper/107:30:131
24011991614,1cyclictest0-21swapper/107:15:141
24011991613,2cyclictest3681-21anvil08:25:021
24011991613,2cyclictest3183-21date09:20:011
2401199160,1cyclictest0-21swapper/108:00:141
2401199160,15cyclictest31485-21sendmail_mailst09:10:221
2401199160,15cyclictest2764-21gnome-shell10:20:091
2401199160,15cyclictest19959-21/usr/sbin/munin09:50:231
2401199160,15cyclictest1736-21tr10:15:141
2401199160,15cyclictest16201-21ntpq11:35:191
2401199160,15cyclictest15903-21/usr/sbin/munin07:50:181
2401199160,15cyclictest0-21swapper/110:50:031
2401199160,15cyclictest0-21swapper/110:30:131
2401199160,15cyclictest0-21swapper/110:10:171
2401199160,15cyclictest0-21swapper/107:55:181
24010991614,1cyclictest31241-21ntp_kernel_pll_08:15:180
24010991614,1cyclictest27753-21/usr/sbin/munin07:15:180
24010991614,1cyclictest10093-21apt-get12:25:010
24010991614,1cyclictest0-21swapper/011:25:020
24010991614,1cyclictest0-21swapper/010:50:130
24010991614,1cyclictest0-21swapper/007:55:140
24010991614,1cyclictest0-21swapper/007:40:170
24010991614,1cyclictest0-21swapper/007:25:110
24010991614,1cyclictest0-21swapper/007:10:190
2401099160,2cyclictest397-21expr11:10:130
2401099160,1cyclictest0-21swapper/008:40:170
2401099160,1cyclictest0-21swapper/007:50:020
2401099160,15cyclictest516-21sendmail_mailqu12:05:200
2401099160,15cyclictest4538-21H212:26:330
2401099160,15cyclictest4534-21H212:26:330
2401099160,15cyclictest18701-21sh08:50:010
2401099160,15cyclictest0-21swapper/012:00:170
2401099160,15cyclictest0-21swapper/010:40:230
2401099160,15cyclictest0-21swapper/010:00:150
2401099160,15cyclictest0-21swapper/008:25:010
24010991513,1cyclictest0-21swapper/011:05:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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