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2026-08-01 - 10:37
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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
Characteristics of the highest latencies:
System rack6slot6 (updated Sat Aug 01, 2026 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
281759910725853477,53658cyclictest24374-21ssh00:34:300
281759910709153407,53588cyclictest2099-21runrttasks19:42:260
281759910676953465,53240cyclictest9-21ksoftirqd/021:51:130
281759910672853476,53252cyclictest0-21swapper21:40:000
281759910672153380,53252cyclictest14716-21kworker/0:223:45:560
281759910666853467,53112cyclictest9-21ksoftirqd/019:29:420
281759910665353474,53113cyclictest0-21swapper21:26:160
281759910665353474,53088cyclictest0-21swapper19:52:080
281759910662453415,53164cyclictest10946-21munin-node00:15:240
281759910650253394,53108cyclictest0-21swapper19:20:590
281759910648453463,53021cyclictest0-21swapper21:06:200
281759910647453434,52977cyclictest28171-21cyclictest21:47:020
281759910644453401,53043cyclictest0-21swapper20:14:050
281759910642953450,52979cyclictest0-21swapper20:15:150
281759910640053476,52924cyclictest0-21swapper00:39:010
281759910638053414,52875cyclictest0-21swapper23:37:230
281759910636653439,52927cyclictest0-21swapper20:34:410
281759910621853475,52743cyclictest0-21swapper22:44:480
281759910621653411,52805cyclictest0-21swapper19:19:590
281759910617753436,52703cyclictest0-21swapper20:57:170
281759910616453450,52714cyclictest0-21swapper20:42:330
281759910614953397,52752cyclictest0-21swapper19:12:570
281759910614253439,52703cyclictest0-21swapper19:46:170
281759910613453390,52744cyclictest0-21swapper23:32:320
281759910613053427,52703cyclictest0-21swapper20:53:460
281759910546552972,52491cyclictest19573-21ssh00:26:380
281759910508252970,52107cyclictest0-21swapper21:44:310
281759910494852896,52051cyclictest0-21swapper19:57:400
28175995343826,53412cyclictest0-21swapper21:10:310
28175995307733,52952cyclictest0-21swapper20:49:350
28175995307712,53062cyclictest28957-21ssh22:19:210
28175995291552891,23cyclictest0-21swapper22:51:500
281759926021063,1446cyclictest20713-21kworker/u2:022:55:310
281759924291016,1314cyclictest1896-21nscd23:51:470
281759924001094,1240cyclictest3950irq/9-acpi22:04:570
281759923941056,1212cyclictest22531-21ssh23:43:150
281759923611061,1206cyclictest167932sleep021:15:020
281759922991073,1106cyclictest0-21swapper20:23:580
281759922141013,1108cyclictest26680-21kworker/0:223:06:440
281759921991076,1024cyclictest2272-21munin-node00:13:040
281759921021019,959cyclictest16173-21ssh00:21:460
281759920971095,879cyclictest27798-21ssh23:04:340
281759920631023,1006cyclictest0-21swapper23:13:060
28175992040932,1074cyclictest0-21swapper22:35:360
28175992031994,997cyclictest2765-21taskset22:27:430
281759920001038,868cyclictest0-21swapper21:03:390
281759919991062,813cyclictest30696-21ssh22:20:410
281759919441023,798cyclictest23847-21ssh22:10:480
281759919071078,422cyclictest0-21swapper19:38:450
28175991892962,906cyclictest28360-21ssh21:30:270
28175991855911,908cyclictest11860-21ssh23:27:410
28175991855890,941cyclictest0-21swapper23:58:390
28175991794910,859cyclictest9-21ksoftirqd/022:49:190
281759917591091,604cyclictest3950irq/9-acpi21:22:040
281759917161039,587cyclictest28171-21cyclictest00:00:400
281759916891100,589cyclictest0-21swapper23:23:390
281759916761022,617cyclictest4628-21ssh23:16:570
281759916591086,573cyclictest0-21swapper19:33:030
281759916061097,443cyclictest0-21swapper20:05:320
281759916031059,544cyclictest0-21swapper20:04:220
281759915671076,427cyclictest9-21ksoftirqd/020:37:420
28175991536962,542cyclictest5350irq/9-uhci_hcd:21:59:450
28175991515698,814cyclictest0-21swapper22:31:140
281759914991005,427cyclictest0-21swapper00:06:020
281759914731100,373cyclictest0-21swapper20:27:290
281759914551089,366cyclictest0-21swapper22:08:380
27969265936,207sleep00-21swapper19:09:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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