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2026-07-22 - 04:14
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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 highest latencies:
System rack6slot5.osadl.org (updated Wed Jul 22, 2026 00:45:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
65839992604643,4604cyclictest10426-21kworker/0:123:26:580
65839990594665,4384cyclictest27220-21kworker/0:019:15:590
65839989924522,4456cyclictest23981-21kworker/0:100:01:110
65839984434230,4199cyclictest6767-21kworker/0:200:30:310
65839981284053,4061cyclictest27220-21kworker/0:019:14:130
65839976593940,3697cyclictest21060-21kworker/0:223:45:180
65839973963872,3464cyclictest21060-21kworker/0:223:43:240
65839972713818,3393cyclictest23981-21kworker/0:123:59:120
65839972383806,3380cyclictest1601-21kworker/0:100:13:330
65839971413749,3333cyclictest10426-21kworker/0:123:25:010
65839970293720,3296cyclictest14341-21kworker/0:100:42:380
65839966883547,3127cyclictest17674-21kworker/0:119:38:280
65839964733323,3136cyclictest12591-21kworker/0:219:25:520
65839963283452,2826cyclictest6767-21kworker/0:200:27:260
65839961573196,2948cyclictest1601-21kworker/0:100:15:260
65839960493154,2882cyclictest17674-21kworker/0:119:40:270
65839948212539,2272cyclictest27220-21kworker/0:019:20:140
63102779186,202sleep00-21swapper19:08:220
65839952832,435cyclictest6667-21sed23:10:400
65839952732,433cyclictest4924-21runrttasks22:52:590
65839952433,429cyclictest19551-21cat23:40:060
65839952133,426cyclictest28524-21memory22:45:530
65839951933,424cyclictest9375-21latency23:16:180
65839951856,402cyclictest5099-21python23:06:180
65839951754,277cyclictest15390-21idleruntime23:30:210
65839951056,393cyclictest138162chrt22:11:180
65839950930,419cyclictest1939-21munin-node21:46:290
65839950652,271cyclictest13556-21ssh00:38:040
65839950064,423cyclictest24381-21runrttasks23:50:120
65839949864,374cyclictest194582sleep021:10:230
65839949830,406cyclictest26089-21runrttasks22:40:370
65839949253,368cyclictest14930-21ps20:56:050
65839949156,259cyclictest19223-21diskmemload21:53:150
65839948963,366cyclictest28573-21seq21:30:460
65839948952,80cyclictest19183-21latency_hist22:25:060
65839948855,372cyclictest32389-21ssh00:06:470
65839948655,431cyclictest0-21swapper21:02:210
65839948575,349cyclictest16816-21ssh22:19:240
65839947953,240cyclictest19511-21grep22:25:320
65839947453,361cyclictest31191-21cron20:15:000
65839947253,405cyclictest21697-21df21:15:260
65839947053,356cyclictest8596-21ntp_offset20:40:290
65839946953,346cyclictest1664-21cron23:00:080
65839946652,400cyclictest31933-21awk20:15:360
65839946553,353cyclictest25530-21kworker/u2:021:39:520
65839945571,371cyclictest23833-21df21:20:280
65839945364,376cyclictest19223-21diskmemload22:00:020
65839945353,339cyclictest9931-21ssh22:01:520
65839944955,380cyclictest4637-21ntpq20:30:180
65839944855,379cyclictest4305-21snmpd22:34:500
6583994481,434cyclictest0-21swapper20:38:490
65839944179,349cyclictest6507-21ssh00:21:380
65839944155,258cyclictest1209-21ssh21:41:520
65839943535,386cyclictest1455-21kworker/u2:122:07:090
6583994341,373cyclictest1226-21ssh22:57:410
65839943147,210cyclictest290572chrt20:07:260
65839943069,303cyclictest27394-21ssh21:27:520
65839943052,378cyclictest0-21swapper20:29:040
65839942955,361cyclictest24324-21ssh22:36:000
65839942664,350cyclictest13-21rcuc/019:50:530
65839941452,348cyclictest11740-21runrttasks20:49:180
65839939555,340cyclictest0-21swapper19:32:390
65839939353,340cyclictest0-21swapper19:58:380
65839938755,273cyclictest12360-21sed20:50:290
65839938735,292cyclictest20694-21cut19:45:330
65839938354,269cyclictest26565-21strings20:00:440
65839937329,284cyclictest17920-21df_inode21:05:320
6583993692,367cyclictest0-21swapper20:20:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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