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2025-12-26 - 18:30
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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 100 highest latencies:
System rackdslot0.osadl.org (updated Fri Dec 26, 2025 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1172599230,5cyclictest0-21swapper/008:19:220
1173599212,18cyclictest0-21swapper/211:30:002
11735992114,7cyclictest0-21swapper/207:55:162
1173099204,1cyclictest3414-21master08:26:421
11730992018,2cyclictest0-21swapper/112:16:321
1172599203,16cyclictest2413-21sort11:39:010
11735991916,1cyclictest0-21swapper/211:13:352
11735991915,2cyclictest16709-21nfsd411:05:152
1173599190,18cyclictest0-21swapper/212:26:312
1173599190,18cyclictest0-21swapper/211:50:152
1173599190,16cyclictest0-21swapper/210:25:132
1173099190,3cyclictest0-21swapper/112:05:011
11735991815,2cyclictest25551-21grep12:20:122
11735991815,2cyclictest23288-21pzem08:25:212
11735991815,2cyclictest17648-21cut12:05:142
11735991814,3cyclictest3991-21H222:10:212
11735991813,3cyclictest0-21swapper/208:25:002
1173599180,17cyclictest2007-21systemd-journal11:58:212
1173599180,17cyclictest2007-21systemd-journal11:58:202
1173099182,1cyclictest0-21swapper/110:05:141
11730991816,1cyclictest10535-21taskset09:58:501
11730991815,2cyclictest21054-21nfsd412:10:171
11730991814,2cyclictest3788-21smartctl07:50:201
1173099180,17cyclictest20000-21df_inode10:15:161
1172599182,15cyclictest31707-21ntp_kernel_err10:35:200
11725991816,1cyclictest240222chrt08:29:440
11725991816,1cyclictest0-21swapper/007:54:080
11725991815,2cyclictest3978-21H222:10:210
11725991814,3cyclictest1516-21lxd09:00:410
11725991814,3cyclictest0-21swapper/011:40:170
1172599181,2cyclictest26537-21cut12:20:170
1172599181,2cyclictest26173-21grep07:35:160
1172599180,17cyclictest7997-21cut09:55:000
1172599180,17cyclictest426-21systemd-udevd10:48:510
11735991715,2cyclictest3954-21VM22:10:212
11735991714,2cyclictest5721-21sed08:50:222
11735991714,2cyclictest3985-21H222:10:212
11735991714,2cyclictest3976-21H222:10:212
11735991714,2cyclictest32454-21idleruntime07:45:162
11735991714,2cyclictest31030-21grep10:35:162
11735991714,2cyclictest30832-21sed07:40:222
11735991714,2cyclictest30419-21nfsd409:35:192
11735991714,2cyclictest1962-21latency08:45:152
11735991714,1cyclictest0-21swapper/208:10:172
1173599171,1cyclictest11039-21missed_timers09:00:172
1173599170,3cyclictest0-21swapper/212:12:062
1173599170,2cyclictest6886-21cpuspeed_turbos08:55:142
1173599170,2cyclictest3985-21H222:10:212
1173599170,2cyclictest3983-21H222:10:212
1173599170,2cyclictest26229-21cpuspeed_turbos07:35:152
1173599170,2cyclictest23331-21cron11:20:002
1173599170,16cyclictest6153-21chrt10:47:212
1173599170,16cyclictest3991-21H222:10:212
1173599170,16cyclictest3983-21H222:10:212
1173599170,16cyclictest3979-21H222:10:212
1173599170,16cyclictest3908-21fschecks_time11:40:182
1173599170,16cyclictest27684-21netstat09:30:192
1173599170,16cyclictest26616-21tlsmgr12:00:022
1173599170,16cyclictest24168-21/usr/sbin/munin11:20:142
1173599170,16cyclictest18588-21missed_timers07:20:172
1173599170,16cyclictest18058-21ntpq10:10:202
1173599170,16cyclictest18058-21ntpq10:10:202
1173599170,16cyclictest14698-21python311:05:002
1173599170,16cyclictest12657-21fschecks_count07:10:142
1173599170,16cyclictest1085-21gdbus07:15:222
1173599170,16cyclictest0-21swapper/211:35:202
1173599170,15cyclictest3979-21H222:10:212
1173099172,1cyclictest0-21swapper/109:30:151
1173099172,1cyclictest0-21swapper/109:10:161
11730991715,1cyclictest3979-21H222:10:211
11730991715,1cyclictest21-21ksoftirqd/111:04:021
11730991715,1cyclictest14492chrt07:47:081
11730991715,1cyclictest0-21swapper/107:20:161
11730991714,2cyclictest3976-21H222:10:211
11730991714,2cyclictest3053-21systemd-logind11:28:521
11730991714,2cyclictest20704-21expr07:25:131
11730991714,2cyclictest12529-21missed_timers11:55:171
11730991714,2cyclictest12529-21missed_timers11:55:171
1173099171,15cyclictest3985-21H222:10:211
1173099171,15cyclictest21-21ksoftirqd/108:57:291
1173099171,15cyclictest0-21swapper/107:30:121
1173099170,2cyclictest31784-21chrt11:33:181
1173099170,2cyclictest25148-21grep09:25:181
1173099170,2cyclictest19867-21sendmail_mailtr09:15:211
1173099170,2cyclictest1526-21lxd09:44:421
1173099170,2cyclictest1525-21lxd09:04:421
1173099170,2cyclictest1205-21expr08:45:121
1173099170,1cyclictest0-21swapper/111:43:301
1173099170,16cyclictest863-21avahi-daemon11:45:191
1173099170,16cyclictest3976-21H222:10:211
1173099170,16cyclictest2069-21systemd-udevd08:24:521
1173099170,16cyclictest1829-21systemd-journal10:38:151
1173099170,16cyclictest1523-21lxd10:12:421
1173099170,16cyclictest1523-21lxd10:12:411
1173099170,16cyclictest1441-21sendmail-mta08:36:451
1173099170,16cyclictest1171-21grep11:35:181
1172599172,1cyclictest231962sleep011:18:190
11725991715,1cyclictest3991-21H222:10:210
11725991715,1cyclictest198112chrt12:10:090
11725991715,1cyclictest1800-21forks12:35:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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