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2025-07-07 - 05:14
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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 50 highest latencies:
System rackcslot2.osadl.org (updated Mon Jul 07, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
275842790,0sleep10-21swapper/123:46:471
2406827049,16sleep10-21swapper/119:04:031
2401127058,8sleep00-21swapper/019:03:250
197032510,0sleep10-21swapper/123:35:591
269012480,1sleep00-21swapper/019:13:030
2460899301,23cyclictest0-21swapper/023:32:390
2460999287,20cyclictest0-21swapper/122:30:311
24609992828,0cyclictest0-21swapper/119:59:341
24608992826,1cyclictest81ktimersoftd/021:03:080
24609992726,0cyclictest0-21swapper/122:37:261
24609992722,5cyclictest7234-21kworker/1:121:21:131
24608992710,12cyclictest98050irq/109-eth1-tx00:28:350
2460899270,2cyclictest0-21swapper/022:46:030
2460899270,2cyclictest0-21swapper/021:09:070
24609992610,2cyclictest0-21swapper/123:18:031
2460899261,3cyclictest0-21swapper/023:26:360
24608992610,15cyclictest0-21swapper/019:37:540
24609992519,4cyclictest0-21swapper/122:23:371
24609992516,6cyclictest97750irq/106-eth1-rx21:47:131
2460999250,24cyclictest29292-21ssh22:21:551
24608992511,10cyclictest0-21swapper/020:38:070
2460899250,22cyclictest7051-21kworker/u4:023:34:190
2460899250,1cyclictest30899-21/usr/sbin/munin23:08:060
24609992423,1cyclictest231ktimersoftd/120:13:051
24609992420,4cyclictest0-21swapper/121:15:301
24609992420,2cyclictest231ktimersoftd/100:08:001
24609992410,6cyclictest0-21swapper/121:58:011
2460999240,2cyclictest0-21swapper/123:11:091
24608992423,1cyclictest17407-21apache200:34:520
2460999235,7cyclictest31696-21awk23:52:471
24609992322,1cyclictest0-21swapper/119:53:571
24609992316,5cyclictest17407-21apache223:31:301
24609992310,12cyclictest0-21swapper/122:56:191
24609992310,0cyclictest0-21swapper/100:02:571
2460899234,12cyclictest0-21swapper/020:28:000
24608992321,1cyclictest7-21ksoftirqd/020:20:150
24608992321,0cyclictest7-21ksoftirqd/021:26:020
24608992317,3cyclictest17407-21apache200:13:440
24608992314,3cyclictest8590-21sh00:03:530
24608992310,4cyclictest0-21swapper/021:13:110
24608992310,3cyclictest0-21swapper/020:33:090
2460899230,8cyclictest0-21swapper/020:23:080
264422220,0sleep10-21swapper/123:01:411
2460999225,9cyclictest0-21swapper/120:43:021
2460999223,11cyclictest0-21swapper/100:13:091
24609992216,3cyclictest17409-21apache221:28:521
24609992214,5cyclictest0-21swapper/123:57:231
24609992211,4cyclictest25009-21apache_processe21:33:001
2460999220,1cyclictest24919-21seq00:27:221
2460899229,5cyclictest91rcu_preempt23:38:460
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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