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2026-05-25 - 05:12
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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 highest latencies:
System rack6slot5.osadl.org (updated Mon May 25, 2026 00:43:46)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
326099995685150,4415cyclictest19991-21kworker/0:019:12:050
320512808186,205sleep00-21swapper19:06:010
326099949636,460cyclictest0-21swapper21:49:560
326099948746,199cyclictest32600-21cyclictest21:16:120
326099947935,382cyclictest2508-19udevd23:11:160
326099947432,382cyclictest18102-19udisks-part-id23:46:190
326099945432,360cyclictest20305-21rm21:25:390
32609994365,370cyclictest11-21ksoftirqd/022:32:010
326099942733,372cyclictest5491-21latency19:20:450
326099942239,368cyclictest7905-21unixbench_singl22:10:400
326099942046,351cyclictest5487-21ssh23:18:310
326099941745,358cyclictest12987-21diskmemload00:15:530
326099941137,359cyclictest12987-21diskmemload00:26:430
326099941132,379cyclictest9152-21python23:26:090
326099941022,365cyclictest18251-21nfs_client21:20:470
326099940927,214cyclictest4136-21sshd19:39:160
326099940833,375cyclictest0-21swapper22:49:000
326099940832,362cyclictest21425-21ssh23:55:150
326099940817,375cyclictest28760-21irqstats20:25:130
326099940634,88cyclictest14620-21expr19:45:350
326099940531,374cyclictest12987-21diskmemload22:37:310
326099940334,369cyclictest8888-21sed19:30:310
326099940234,368cyclictest14485-21cut21:11:400
326099940218,87cyclictest14803-21grep23:40:130
326099940134,355cyclictest26496-21sshd20:18:000
326099940033,356cyclictest20006-21strings23:50:570
326099939732,365cyclictest0-21swapper00:38:460
326099939732,350cyclictest3830-21ps19:16:110
326099939632,364cyclictest14183-21ssh22:25:260
326099939632,350cyclictest6536-21ssh22:06:520
326099939440,292cyclictest12384-21proc_pri21:06:000
326099939238,340cyclictest27933-21ssh21:42:230
326099939232,345cyclictest31928-21chrt20:31:440
326099939222,356cyclictest1024-21ssh23:08:520
326099939137,354cyclictest0-21swapper23:30:120
326099939132,345cyclictest9858-21munin-node22:15:300
326099939131,345cyclictest5499-21python00:31:070
326099938934,340cyclictest12987-21diskmemload21:59:320
326099938820,354cyclictest22972-21python21:31:100
326099938733,340cyclictest12987-21diskmemload00:13:320
326099938733,340cyclictest12987-21diskmemload00:03:430
326099938731,342cyclictest4091-21ps22:01:250
326099938632,340cyclictest27515-21ssh00:08:230
326099938632,340cyclictest12987-21diskmemload21:37:500
326099938531,340cyclictest12987-21diskmemload22:58:520
326099938331,352cyclictest0-21swapper23:03:380
326099938236,346cyclictest0-21swapper22:44:400
326099938235,347cyclictest0-21swapper19:44:080
326099938232,336cyclictest7386-21python19:25:490
326099938135,346cyclictest0-21swapper21:00:340
326099938036,344cyclictest0-21swapper23:37:210
326099937746,270cyclictest430-21df_abs00:20:380
326099937544,270cyclictest18747-21cstates19:56:010
326099937539,275cyclictest8160-21switchtime20:55:320
326099937252,260cyclictest26530-21ssh22:52:220
326099937232,279cyclictest24903-21cut20:15:010
326099936946,88cyclictest4297-21df_abs20:45:280
326099936833,274cyclictest4894-21runrttasks20:37:170
326099936743,88cyclictest2214-21df_inode20:40:260
326099936640,90cyclictest6689-21awk23:20:480
326099936634,90cyclictest28700-21ls20:25:030
326099936634,89cyclictest5989-21gltestperf20:50:230
326099936534,90cyclictest19686-21head20:00:200
326099936533,89cyclictest22140-21cat20:05:450
326099936425,278cyclictest13374-21ssh22:22:540
326099936340,88cyclictest448-21latency_hist21:55:030
326099935530,265cyclictest16266-21sed19:50:310
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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