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2024-11-22 - 09:54
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackeslot6.osadl.org (updated Fri Nov 22, 2024 00:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
368708099138131,6cyclictest3777691-21kworker/u8:2+events_unbound00:04:031
368707999117106,8cyclictest3732534-21/usr/sbin/munin21:30:300
368707999116111,4cyclictest3738898-21kworker/u8:2+events_unbound22:00:240
368707999112102,8cyclictest3774055-21kworker/u8:1+flush-179:000:00:000
368708099110105,4cyclictest3777691-21kworker/u8:2+events_unbound00:05:251
36870809910897,4cyclictest3749794-21kworker/u8:2+events_unbound22:25:191
36870809910799,6cyclictest3755694-21kworker/u8:1+flush-179:022:50:271
36870809910398,4cyclictest3693543-21kworker/u8:0+events_unbound20:00:221
36870799910187,11cyclictest3776122-21apt-get23:50:090
3687080999994,4cyclictest3682419-21kworker/u8:0+events_unbound19:15:251
3687080999991,6cyclictest3772395-21kworker/u8:0+flush-179:023:50:211
3687080999888,7cyclictest3753040-21kworker/u8:3+flush-179:022:40:001
3687080999486,6cyclictest3749794-21kworker/u8:2+flush-179:023:05:221
3687080999287,4cyclictest3751642-21kworker/u8:1+events_unbound22:30:311
3687080999287,4cyclictest3737124-21kworker/u8:1+events_unbound21:55:241
3687079999280,9cyclictest3692216-21/usr/sbin/munin19:25:230
3687080999187,3cyclictest3711068-21kworker/u8:1+events_unbound20:30:221
3687079999186,4cyclictest3722470-21kworker/u8:0+events_unbound21:05:230
3687080998979,4cyclictest3722470-21kworker/u8:0+events_unbound21:25:241
3687080998979,4cyclictest3722470-21kworker/u8:0+events_unbound21:25:241
3687080998884,3cyclictest3693543-21kworker/u8:0+events_unbound19:45:241
3687079998774,10cyclictest3759928-21apt-get22:55:090
3687080998675,8cyclictest3105085-21systemd-journal21:15:011
3687080998473,4cyclictest3772395-21kworker/u8:0+events_unbound00:10:321
3687079998479,4cyclictest3772395-21kworker/u8:0+events_unbound23:39:550
3687080998374,7cyclictest3726994-21latency_hist21:15:011
3687080998374,3cyclictest3693601-21kworker/u8:3+events_unbound19:55:231
3687079998378,4cyclictest3749794-21kworker/u8:2+events_unbound22:49:550
3687079998378,4cyclictest3741909-21kworker/u8:0+events_unbound22:29:560
3687079998371,10cyclictest3791016-21/usr/sbin/munin00:35:240
3687080998278,3cyclictest3706337-21kworker/u8:3+events_unbound20:24:571
3687080998277,3cyclictest3693543-21kworker/u8:0+events_unbound20:05:131
3687079998270,9cyclictest3712930-21apt-get20:30:110
3687080998176,4cyclictest3766021-21kworker/u8:0+events_unbound23:24:561
3687079998176,4cyclictest3755694-21kworker/u8:1+events_unbound22:54:560
3687080998076,3cyclictest3764436-21kworker/u8:1+events_unbound23:19:561
3687080998076,3cyclictest3686871-21kworker/u8:1+events_unbound19:25:211
3687080998076,3cyclictest3686871-21kworker/u8:1+events_unbound19:10:211
3687080998075,4cyclictest3764436-21kworker/u8:1+events_unbound23:10:111
3687080998070,4cyclictest3682419-21kworker/u8:0+events_unbound19:20:261
3687080997974,4cyclictest3755694-21kworker/u8:1+events_unbound23:00:171
3687080997974,4cyclictest3755694-21kworker/u8:1+events_unbound23:00:161
368707999790,76cyclictest688-21snmpd21:15:000
3687080997873,4cyclictest3693543-21kworker/u8:0+events_unbound20:17:011
3687079997873,4cyclictest3728898-21kworker/u8:3+events_unbound21:49:570
3687080997768,3cyclictest3711068-21kworker/u8:1+events_unbound20:55:111
3687079997672,3cyclictest3789160-21kworker/u8:2+events_unbound00:34:560
3687080997570,4cyclictest3772395-21kworker/u8:0+events_unbound23:38:431
3687080997570,4cyclictest3728898-21kworker/u8:3+events_unbound21:34:551
3687079997571,3cyclictest3728898-21kworker/u8:3+events_unbound21:24:560
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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