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2026-09-08 - 13:09
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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 Tue Sep 08, 2026 00:43:40)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
249889987044719,3983cyclictest672-21kworker/0:219:12:370
249889967813687,3019cyclictest672-21kworker/0:219:26:160
249889961613340,2811cyclictest672-21kworker/0:219:20:090
249889961253325,2796cyclictest672-21kworker/0:219:15:570
247532804183,204sleep00-21swapper19:08:410
249889949635,461cyclictest0-21swapper21:27:540
249889945332,421cyclictest0-21swapper23:27:080
249889944468,363cyclictest0-21swapper23:17:150
249889944363,213cyclictest0-21swapper20:25:150
249889943363,187cyclictest0-21swapper22:05:230
249889943268,304cyclictest0-21swapper21:47:270
249889942766,178cyclictest0-21swapper19:45:170
249889941732,385cyclictest0-21swapper21:54:050
249889941534,252cyclictest6908-21runrttasks22:38:590
249889941116,334cyclictest0-21swapper20:13:500
249889940832,376cyclictest0-21swapper23:38:490
249889940622,370cyclictest5466-21diskmemload21:30:310
249889940552,340cyclictest235442sleep023:21:170
249889939732,350cyclictest25869-21sed20:35:530
249889939632,349cyclictest4224-21lldpd23:54:260
249889939538,348cyclictest351950irq/10-yenta22:19:190
249889939532,349cyclictest4924-21runrttasks20:03:210
249889939532,349cyclictest4204-21gpm21:07:480
249889939435,359cyclictest0-21swapper22:26:160
249889939431,349cyclictest15518-21cat20:10:010
249889939223,369cyclictest0-21swapper19:32:000
249889939133,344cyclictest15797-21runrttasks23:00:570
249889939120,358cyclictest11-21ksoftirqd/000:40:020
249889939052,279cyclictest4924-21runrttasks00:34:550
249889938841,347cyclictest0-21swapper00:10:400
249889938735,352cyclictest0-21swapper21:20:570
249889938728,346cyclictest351950irq/10-yenta00:15:350
249889938714,373cyclictest19494-21hddtemp_smartct23:10:570
249889938637,280cyclictest28207-21mailstats22:10:150
249889938430,354cyclictest0-21swapper20:47:420
249889938335,162cyclictest16715-21chrt21:39:470
249889938229,339cyclictest387-21timerandwakeup22:20:460
249889938122,359cyclictest0-21swapper23:45:070
249889938028,352cyclictest0-21swapper20:33:490
249889937832,346cyclictest0-21swapper20:15:290
249889937831,287cyclictest23718-21grep21:56:020
249889937823,355cyclictest0-21swapper20:59:060
249889937732,345cyclictest0-21swapper22:57:210
249889937713,349cyclictest10755-21chrt22:49:350
249889937622,354cyclictest0-21swapper19:36:000
249889937513,362cyclictest0-21swapper20:23:030
249889937431,343cyclictest0-21swapper22:30:080
249889936835,274cyclictest12371-21runrttasks22:52:230
249889936390,260cyclictest4285-21lldpd21:43:500
249889936389,260cyclictest4285-21lldpd20:41:340
249889936133,152cyclictest2531-21strings21:00:420
249889936132,268cyclictest4924-21runrttasks20:50:440
249889936128,271cyclictest25619-21ls22:00:590
249889936086,260cyclictest4285-21lldpd23:58:110
249889935932,268cyclictest14873-21df_abs00:25:280
249889935712,286cyclictest0-21swapper21:17:470
249889935311,328cyclictest0-21swapper22:44:440
249889935067,270cyclictest0-21swapper00:00:520
249889934831,258cyclictest4565-21seq19:40:150
249889934586,200cyclictest0-21swapper00:21:110
249889934068,213cyclictest0-21swapper00:08:040
249889933968,88cyclictest0-21swapper21:11:310
249889933968,213cyclictest0-21swapper23:09:370
249889933967,213cyclictest29964-21cut23:40:200
249889933967,213cyclictest0-21swapper19:58:370
249889933866,212cyclictest0-21swapper23:30:060
249889933765,213cyclictest0-21swapper19:53:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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