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2026-05-31 - 22:36
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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 376 highest latencies:
System rack6slot5.osadl.org (updated Sun May 31, 2026 12:45:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
293819986634307,4303cyclictest13548-21kworker/0:207:14:100
293819946232438,2174cyclictest13548-21kworker/0:207:15:350
287172810183,203sleep00-21swapper07:05:230
293819957036,534cyclictest0-21swapper11:48:470
293819952985,374cyclictest15441-21ssh11:57:040
293819951218,423cyclictest21109-21ssh10:54:510
293819950817,421cyclictest21273-21which10:55:120
293819950417,416cyclictest24476-21chrt12:20:160
293819948918,400cyclictest7030-21ntp_states07:35:180
293819948914,403cyclictest31388-21gltestperf08:40:240
293819948314,399cyclictest16059-31updatedb.mlocat07:59:470
293819948036,444cyclictest0-21swapper09:43:410
293819947918,399cyclictest9741-21diskmemload12:06:030
293819947419,394cyclictest6538-21kworker/u2:010:45:370
293819946839,358cyclictest9915-21seq10:25:550
293819946518,386cyclictest7540-21ssh11:39:420
293819946415,387cyclictest13469-21ssh11:52:440
293819946036,424cyclictest0-21swapper08:00:110
293819945837,397cyclictest9741-21diskmemload09:17:410
293819945318,420cyclictest2864-21seq07:24:030
293819945269,370cyclictest13-21rcuc/007:25:580
293819945221,416cyclictest26572-21which11:06:290
293819945072,93cyclictest5256-21cpuspeed_turbos10:15:320
293819944971,364cyclictest9741-21diskmemload11:18:210
293819944963,372cyclictest13-21rcuc/011:25:560
293819944853,381cyclictest50482chrt11:32:240
293819944764,89cyclictest9741-21diskmemload10:33:270
293819944663,89cyclictest11-21ksoftirqd/010:20:300
293819944565,96cyclictest13-21rcuc/009:56:430
293819944417,411cyclictest4253-21lldpd08:33:240
293819944368,361cyclictest22342-21munin-node12:16:220
293819944267,361cyclictest11-21ksoftirqd/007:30:260
293819944241,331cyclictest27980-21perl09:51:350
293819944016,409cyclictest9741-21diskmemload12:12:330
293819943878,346cyclictest13-21rcuc/009:08:530
293819943778,186cyclictest345450irq/10-yenta11:41:290
293819943737,385cyclictest9741-21diskmemload10:39:450
293819943472,302cyclictest26146-21ssh09:47:060
293819943372,301cyclictest11-21ksoftirqd/012:33:020
293819943364,87cyclictest22316-21ssh09:39:210
293819943318,345cyclictest22152sleep008:49:530
293819943117,400cyclictest1735-21python10:06:260
293819943072,346cyclictest345450irq/10-yenta12:04:140
293819943018,387cyclictest11075-21ssh09:11:440
293819942918,396cyclictest17411-21fschecks_time09:26:370
293819942558,352cyclictest9741-21diskmemload10:43:260
293819942418,391cyclictest16099-21runrttasks09:25:010
293819942362,347cyclictest24779-21ssh11:01:560
293819941936,359cyclictest4272-21snmpd09:03:590
293819941918,340cyclictest4441-21ssh10:12:260
293819941916,388cyclictest27173-21iostat12:25:510
293819941420,334cyclictest30994-21turbostat.cron08:40:010
293819941248,304cyclictest18335-21munin-node09:31:450
293819940941,353cyclictest9741-21diskmemload10:01:180
293819940921,327cyclictest32423-21kworker/u2:312:41:320
293819940243,344cyclictest9741-21diskmemload11:21:040
293819940237,351cyclictest9741-21diskmemload11:14:540
293819939338,332cyclictest902-21jbd2/sda1-808:55:050
293819938935,354cyclictest0-21swapper08:52:580
293819938741,286cyclictest11-21ksoftirqd/007:45:220
293819938354,155cyclictest18352-21awk08:05:210
293819938335,165cyclictest24632-21sed08:20:520
293819938135,346cyclictest0-21swapper12:38:470
293819937933,346cyclictest0-21swapper08:13:370
293819937732,284cyclictest13629-21ps07:51:070
2938199375103,90cyclictest11-21ksoftirqd/008:15:260
293819937133,102cyclictest26347-21cut08:25:420
293819935117,319cyclictest88182chrt07:40:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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