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2026-05-10 - 06:36
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack8slot2.osadl.org (updated Sun May 10, 2026 00:43:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
28988999360328,25cyclictest86-21hwrng22:31:010
28988999360328,25cyclictest86-21hwrng22:31:010
28989199324314,4cyclictest0-21swapper/222:31:012
28989199324314,4cyclictest0-21swapper/222:31:012
28989099223210,4cyclictest0-21swapper/122:31:011
28989099223210,4cyclictest0-21swapper/122:31:011
289889991584,143cyclictest11950irq/206-8000000.ethernet-rx023:21:110
28988999158100,50cyclictest325874-21kworker/u16:3+rpciod21:55:510
28988999158100,50cyclictest325874-21kworker/u16:3+rpciod21:55:510
289889991506,137cyclictest422567-21kworker/u16:12+rpciod00:20:110
289889991506,137cyclictest422567-21kworker/u16:12+rpciod00:20:110
2898899913821,110cyclictest424732-21missed_timers23:45:470
289889991381,97cyclictest400038-21ntpq23:05:510
289889991381,125cyclictest0-21swapper/022:00:160
289889991381,125cyclictest0-21swapper/022:00:160
289889991371,90cyclictest452037-21/usr/sbin/munin00:30:320
2898899913615,119cyclictest11950irq/206-8000000.ethernet-rx000:11:290
2898899913511,104cyclictest414529-21ssh23:30:030
2898899913511,104cyclictest414529-21ssh23:30:030
289889991335,125cyclictest11950irq/206-8000000.ethernet-rx022:25:440
289889991319,119cyclictest393728-21memory22:55:480
289889991319,119cyclictest393728-21memory22:55:480
289889991312,83cyclictest346730-21ssh21:40:520
289889991312,83cyclictest346730-21ssh21:40:520
2898899913112,108cyclictest380591-21ssh22:35:170
28988999131102,11cyclictest86-21hwrng00:16:300
28988999131102,11cyclictest86-21hwrng00:16:300
289889991294,121cyclictest436348-21ssh00:05:180
289889991294,121cyclictest436348-21ssh00:05:180
289889991292,86cyclictest427082-21sh23:50:210
28988999129103,22cyclictest86-21hwrng21:00:550
2898929912885,26cyclictest409405-21ssh23:21:013
28989299127118,5cyclictest86-21hwrng22:10:333
289889991261,113cyclictest0-21swapper/022:16:070
289889991261,113cyclictest0-21swapper/022:16:070
289889991244,101cyclictest343355-21ssh21:35:030
289889991244,101cyclictest343355-21ssh21:35:030
289889991231,93cyclictest420848-21apt-get23:40:270
289889991226,25cyclictest404042-21kworker/u16:6+rpciod23:40:030
289889991226,25cyclictest404042-21kworker/u16:6+rpciod23:40:030
289889991225,14cyclictest445645-21kworker/u16:14+rpciod00:40:040
289889991225,14cyclictest445645-21kworker/u16:14+rpciod00:40:040
28989199120113,3cyclictest0-21swapper/222:00:132
28989199120113,3cyclictest0-21swapper/222:00:132
28989199120109,3cyclictest0-21swapper/223:21:112
28989099120112,4cyclictest0-21swapper/120:10:441
28989299119106,5cyclictest86-21hwrng20:55:483
28989299117109,5cyclictest86-21hwrng23:57:023
28989099116104,5cyclictest0-21swapper/100:09:201
28989099116104,5cyclictest0-21swapper/100:09:201
2898929911584,28cyclictest375403-21ntpq22:26:033
28989299115106,5cyclictest86-21hwrng19:35:553
28989099115108,3cyclictest0-21swapper/122:35:071
28989099115106,3cyclictest0-21swapper/122:01:201
28989099115106,3cyclictest0-21swapper/122:01:201
28989099114106,4cyclictest0-21swapper/121:09:061
28989099114106,4cyclictest0-21swapper/100:11:231
2898929911398,12cyclictest86-21hwrng00:01:083
2898929911398,12cyclictest86-21hwrng00:01:083
289889991134,106cyclictest11950irq/206-8000000.ethernet-rx023:15:120
2898929911296,5cyclictest86-21hwrng19:41:023
28989299112104,5cyclictest86-21hwrng20:30:123
28989099112106,3cyclictest0-21swapper/123:25:181
28989099112106,3cyclictest0-21swapper/123:25:181
28989099112106,3cyclictest0-21swapper/123:13:011
289889991123,98cyclictest331755-21ntpq21:15:490
28989099111103,4cyclictest0-21swapper/123:09:561
28989099111100,8cyclictest0-21swapper/120:27:071
28989299110101,6cyclictest86-21hwrng20:22:003
28989299110100,6cyclictest86-21hwrng20:36:203
28989299110100,6cyclictest86-21hwrng20:36:203
28989099110103,3cyclictest0-21swapper/122:28:591
28989099110100,6cyclictest0-21swapper/121:21:241
2898899911034,72cyclictest0-21swapper/022:50:090
2898899911034,72cyclictest0-21swapper/022:50:090
28989299109102,5cyclictest86-21hwrng23:27:213
28989299109102,5cyclictest86-21hwrng23:27:213
28989299109101,5cyclictest86-21hwrng00:32:533
28989099109101,4cyclictest0-21swapper/123:00:431
2898929910896,6cyclictest86-21hwrng20:41:273
2898929910896,6cyclictest86-21hwrng20:41:273
2898929910893,11cyclictest86-21hwrng20:12:473
28989299108101,5cyclictest86-21hwrng20:54:463
28989299108100,6cyclictest86-21hwrng19:53:203
2898929910794,10cyclictest86-21hwrng19:24:393
2898929910777,27cyclictest86-21hwrng21:28:343
2898929910679,24cyclictest437299-21ntpq00:05:593
2898929910679,24cyclictest437299-21ntpq00:05:593
2898909910699,4cyclictest0-21swapper/119:20:341
289889991065,61cyclictest397760-21kworker/u16:10+rpciod23:05:020
289889991063,96cyclictest11950irq/206-8000000.ethernet-rx022:40:460
2898919910599,3cyclictest0-21swapper/200:30:322
2898929910497,5cyclictest86-21hwrng22:18:443
2898929910497,5cyclictest86-21hwrng22:18:443
2898929910496,5cyclictest86-21hwrng19:57:263
2898919910498,3cyclictest0-21swapper/223:05:512
289891991049,6cyclictest0-21swapper/219:40:042
2898909910498,3cyclictest0-21swapper/121:19:211
2898929910391,5cyclictest86-21hwrng00:28:473
2898929910390,10cyclictest86-21hwrng22:44:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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