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2026-08-03 - 17:09
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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 792 highest latencies:
System rack6slot5.osadl.org (updated Mon Aug 03, 2026 12:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2599899111095853,5206cyclictest27536-21kworker/0:007:19:530
259989976574254,3390cyclictest27536-21kworker/0:007:14:020
259989949192609,2306cyclictest27536-21kworker/0:007:21:300
255182879186,204sleep00-21swapper07:06:400
259989949851,88cyclictest11-21ksoftirqd/010:39:400
259989948024,441cyclictest4305-21snmpd08:16:360
259989945535,420cyclictest0-21swapper07:44:150
259989945075,361cyclictest4762-21munin-node10:20:130
259989945059,324cyclictest14054-31copy08:01:300
25998994491,435cyclictest6715-21diskmemload09:48:110
25998994490,436cyclictest0-21swapper08:54:580
259989944615,371cyclictest18944-21ssh10:51:320
25998994461,430cyclictest6715-21diskmemload10:44:060
259989944511,373cyclictest8000-21timerandwakeup11:41:130
25998994439,373cyclictest15095-21mailstats08:05:130
259989944381,349cyclictest25989-21cyclictest11:23:420
259989943851,374cyclictest31636-21ls12:36:360
259989943650,201cyclictest4924-21runrttasks11:50:130
259989943353,367cyclictest17504-21munin-node08:10:320
259989942953,88cyclictest30446-21runrttasks10:04:450
25998994295,364cyclictest4924-21runrttasks09:54:240
25998994281,367cyclictest6715-21diskmemload11:56:160
259989942635,94cyclictest26585-21ssh12:25:420
259989942254,355cyclictest351950irq/10-yenta10:59:040
259989941956,304cyclictest4120-21syslogd08:24:570
259989941948,88cyclictest11267-21ssh09:20:210
259989941749,368cyclictest0-21swapper11:01:240
259989941637,88cyclictest4685-21kworker/u2:311:36:550
259989941552,350cyclictest13-21rcuc/009:02:510
259989940447,343cyclictest22138-21awk12:15:380
259989940445,88cyclictest344450irq/10-eth007:58:510
259989940443,348cyclictest29954-21ssh12:33:350
259989940439,304cyclictest6715-21diskmemload10:25:250
259989940432,368cyclictest27927-21ssh11:12:280
259989940332,360cyclictest7508-21kworker/u2:009:11:140
259989940139,302cyclictest13-21rcuc/009:28:350
259989940133,354cyclictest4924-21runrttasks07:36:440
259989940128,359cyclictest255692sleep012:23:150
259989940040,347cyclictest27586-21kworker/0:210:32:280
259989940035,351cyclictest18350-21grep09:35:510
259989940031,369cyclictest0-21swapper08:25:260
259989940014,88cyclictest11035-21turbostat09:20:020
259989939635,361cyclictest0-21swapper10:47:330
259989939435,359cyclictest0-21swapper07:26:040
259989939134,343cyclictest4256-21nscd10:19:030
259989939045,345cyclictest0-21swapper08:40:100
2599899390115,205cyclictest18367-21ssh12:06:110
259989938833,355cyclictest0-21swapper08:35:140
259989938820,354cyclictest6355-21runrttasks09:06:560
259989938312,357cyclictest16094-21strings12:01:060
259989938231,351cyclictest0-21swapper11:33:240
259989938211,358cyclictest28284-21ssh09:59:510
259989937934,345cyclictest0-21swapper09:42:310
25998993743,371cyclictest0-21swapper08:33:520
25998993722,357cyclictest28548-21ssh11:15:110
259989937033,337cyclictest13-21rcuc/010:14:420
259989936769,298cyclictest0-21swapper11:09:030
25998993642,362cyclictest0-21swapper08:50:000
25998993631,362cyclictest0-21swapper07:32:350
25998993628,341cyclictest2881-21chrt09:00:010
259989935912,347cyclictest0-21swapper11:49:370
259989935481,259cyclictest4285-21lldpd09:31:530
259989935378,261cyclictest4285-21lldpd12:11:310
259989933668,87cyclictest441-21irqstats11:25:160
259989933372,248cyclictest31584-21timerandwakeup10:06:090
259989933130,301cyclictest0-21swapper07:53:520
259989932757,211cyclictest8271-21python07:45:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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