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2026-05-04 - 11:52
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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 100 highest latencies:
System rackfslot7.osadl.org (updated Mon May 04, 2026 00:46:08)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25205699107104,0cyclictest426463-21sh00:25:000
2520569910198,0cyclictest415265-21taskset00:01:440
25205699813,59cyclictest1078-21lldpd21:29:160
252063997921,39cyclictest366572-21chrt22:35:187
252056997638,21cyclictest0-21swapper/020:22:200
252056997251,18cyclictest875-21mta-sts-daemon21:09:140
252056997233,19cyclictest0-21swapper/000:06:320
252056997132,39cyclictest358843-21ntpq22:20:180
252056997132,20cyclictest399136-21cut23:35:020
252056997113,39cyclictest353643-21kworker/0:0+ice22:16:280
252056997012,19cyclictest0-21swapper/019:21:180
25205699699,39cyclictest339497-21smartctl21:45:220
252056996931,19cyclictest341234-21diskstats21:50:140
252056996911,39cyclictest319884-21/usr/sbin/munin21:10:220
25205699657,39cyclictest228329-21kworker/0:1+ice19:55:180
252056996324,39cyclictest0-21swapper/019:38:460
25205699613,39cyclictest362-21jbd2/sda2-819:33:460
252056996021,39cyclictest0-21swapper/019:53:540
252056995921,38cyclictest0-21swapper/020:55:060
252056995921,38cyclictest0-21swapper/019:26:500
252056995920,39cyclictest0-21swapper/023:16:140
252056995918,20cyclictest353643-21kworker/0:0+ice22:58:040
252056995735,19cyclictest0-21swapper/020:53:160
252056995719,38cyclictest171ktimers/022:08:180
252056995718,39cyclictest0-21swapper/021:23:300
252056995718,19cyclictest321108-21/usr/sbin/munin21:15:160
252056995718,19cyclictest321108-21/usr/sbin/munin21:15:160
252056995519,15cyclictest0-21swapper/022:50:360
252056995517,19cyclictest428188-21ntpq00:25:200
252056995517,19cyclictest303344-21ntpq20:40:200
252056995517,19cyclictest228329-21kworker/0:1+ice19:19:020
252056995516,19cyclictest331406-21kworker/0:0+ice21:40:120
252056995435,19cyclictest335208-21munin-run21:40:020
252056995415,19cyclictest353643-21kworker/0:0+ice23:04:500
252056995415,19cyclictest246222-21kworker/0:0+ice19:13:220
252056995414,39cyclictest228329-21kworker/0:1+ice20:36:120
25205699540,35cyclictest228329-21kworker/0:1+ice20:29:480
252056995315,19cyclictest236199-21snmpd23:38:220
252056995315,0cyclictest0-21swapper/022:36:020
252056995314,39cyclictest353643-21kworker/0:0+ice23:58:520
252056995314,39cyclictest0-21swapper/023:49:340
252056995314,39cyclictest0-21swapper/023:21:540
252056995314,39cyclictest0-21swapper/023:12:380
252056995314,39cyclictest0-21swapper/023:09:120
252056995314,39cyclictest0-21swapper/022:10:080
252056995314,39cyclictest0-21swapper/021:02:520
252056995314,39cyclictest0-21swapper/020:46:160
252056995314,39cyclictest0-21swapper/020:01:140
252056995314,20cyclictest410234-21kworker/0:2+ice00:30:520
252056995314,20cyclictest0-21swapper/021:59:460
252056995313,39cyclictest228329-21kworker/0:1+ice20:06:200
252056995313,39cyclictest0-21swapper/023:29:160
252056995313,20cyclictest0-21swapper/021:32:280
252063995214,19cyclictest0-21swapper/722:40:167
252063995213,39cyclictest0-21swapper/722:15:157
252061995213,39cyclictest0-21swapper/500:20:165
252057995214,19cyclictest0-21swapper/123:15:171
252056995214,19cyclictest228329-21kworker/0:1+ice20:19:080
252056995213,39cyclictest0-21swapper/022:49:140
252056995213,39cyclictest0-21swapper/019:42:120
252056995213,39cyclictest0-21swapper/000:37:280
252056995213,39cyclictest0-21swapper/000:11:520
252056995212,39cyclictest353643-21kworker/0:0+ice22:27:080
252063995113,19cyclictest0-21swapper/722:25:157
252061995113,19cyclictest0-21swapper/522:00:155
252056995133,18cyclictest0-21swapper/023:53:560
252056995113,19cyclictest228329-21kworker/0:1+ice20:30:100
252056995112,39cyclictest0-21swapper/023:44:140
252056995112,39cyclictest0-21swapper/022:03:500
252056995112,39cyclictest0-21swapper/020:12:420
252056995112,20cyclictest0-21swapper/022:31:460
252056995112,20cyclictest0-21swapper/000:19:300
252059995012,19cyclictest0-21swapper/322:35:183
252059995011,19cyclictest0-21swapper/322:40:163
252056995013,19cyclictest252144-21munin-run19:10:020
252056995010,0cyclictest0-21swapper/022:41:440
252056994931,18cyclictest0-21swapper/019:48:420
252063994810,19cyclictest0-21swapper/720:05:147
252063994710,18cyclictest0-21swapper/721:20:147
252061994523,3cyclictest0-21swapper/521:20:145
25205799458,18cyclictest0-21swapper/119:15:161
25205799455,39cyclictest0-21swapper/120:35:171
25206399435,19cyclictest0-21swapper/723:45:167
25206399435,19cyclictest0-21swapper/721:25:157
25205999435,19cyclictest0-21swapper/300:20:153
25206199424,19cyclictest0-21swapper/500:35:165
25205999423,38cyclictest0-21swapper/322:45:163
25205799424,19cyclictest0-21swapper/119:50:151
25206399413,19cyclictest0-21swapper/721:05:187
25206399413,19cyclictest0-21swapper/720:10:167
25205999413,19cyclictest0-21swapper/320:40:153
252063993920,19cyclictest0-21swapper/722:45:167
252059993939,0cyclictest0-21swapper/323:38:363
25205999390,20cyclictest0-21swapper/320:10:163
25206399380,19cyclictest0-21swapper/723:35:167
25205999380,19cyclictest0-21swapper/319:20:153
25206399370,18cyclictest0-21swapper/700:30:157
252060993737,0cyclictest0-21swapper/422:05:164
252059993737,0cyclictest0-21swapper/322:58:043
252059993737,0cyclictest0-21swapper/321:51:363
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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