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2026-04-01 - 01:50
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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 100 highest latencies:
System rackcslot4.osadl.org (updated Tue Mar 31, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
30716952256183,58sleep10-21swapper/107:09:361
30714652254180,58sleep00-21swapper/007:07:100
32531842760,4sleep10-21swapper/112:19:461
307185799692,46cyclictest3253563-21apt-get12:20:121
307185799682,43cyclictest3208424-21apt-get11:15:131
307185799642,42cyclictest3222333-21apt-get11:35:141
307185799642,39cyclictest3138073-21apt-get09:35:151
307185499592,38cyclictest3229262-21apt-get11:45:120
307185499592,37cyclictest3116067-21apt-get09:00:110
307185799571,4cyclictest3243013-21/usr/sbin/munin12:05:001
3071857995711,26cyclictest3151459-21sh09:54:031
307185499572,35cyclictest3183945-21apt-get10:40:130
3071857995614,23cyclictest3171603-21chrt10:21:071
3071857995611,25cyclictest3221559-21sh11:33:471
3071857995611,24cyclictest3231610-21sh11:47:421
307185799552,37cyclictest3162655-21apt-get10:10:131
307185799551,5cyclictest3211910-21apt-get11:20:121
31271602540,12sleep013-21ksoftirqd/009:19:540
3071857995410,31cyclictest3119764-21diskmemload12:08:071
307185799539,27cyclictest3187404-21seq10:45:031
307185799532,5cyclictest3134410-21apt-get09:30:111
307185799531,3cyclictest3180378-21apt-get10:35:121
307185799530,7cyclictest3121576-21ssh09:10:471
307185799529,24cyclictest3158461-21sh10:04:001
307185799521,4cyclictest3072003-21apt-get07:10:131
307185499522,32cyclictest3264379-21apt-get12:35:120
307185799512,38cyclictest3204607-21ssh11:09:581
307185799511,35cyclictest3130863-21apt-get09:25:121
307185799510,39cyclictest3179361-21ssh10:33:091
307185799508,27cyclictest3119470-21seq09:07:011
307185799505,3cyclictest3119764-21diskmemload09:44:211
307185799502,7cyclictest3100432-21apt-get08:20:131
307185799502,4cyclictest3198049-21apt-get11:00:121
307185799501,7cyclictest3168409-21ssh10:18:101
307185799501,7cyclictest3154922-21ssh09:59:061
307185499507,29cyclictest3119764-21diskmemload10:09:150
307185499503,5cyclictest3243263-21apt-get12:05:120
307185499502,6cyclictest3257574-21apt-get12:25:110
307185499502,22cyclictest3250044-21apt-get12:15:150
307185499501,5cyclictest3218838-21apt-get11:30:120
3071854995011,26cyclictest3119764-21diskmemload09:27:430
307185799490,5cyclictest3110704-21interrupts08:45:191
307185499492,5cyclictest3145012-21apt-get09:45:120
307185799489,24cyclictest850-21runrttasks08:43:231
307185799488,24cyclictest3119764-21diskmemload10:40:021
307185799486,26cyclictest30882612chrt07:50:111
307185799486,26cyclictest30879282chrt07:48:341
307185799482,4cyclictest3084384-21apt-get07:40:131
307185799481,9cyclictest3228275-21ssh11:43:201
307185799481,9cyclictest3196228-21ssh10:56:281
307185799481,9cyclictest3129129-21ssh09:21:061
307185799481,5cyclictest3215289-21apt-get11:25:151
307185799481,4cyclictest31253242sleep109:15:531
3071857994812,25cyclictest893-21snmpd12:27:311
307185799480,9cyclictest3114869-21ntp_states08:55:211
307185799480,8cyclictest3146674-21ssh09:46:051
307185799480,7cyclictest3113639-21taskset08:52:241
307185499482,5cyclictest3246708-21apt-get12:10:130
307185499482,5cyclictest3215289-21apt-get11:25:110
307185499482,5cyclictest3148645-21apt-get09:50:120
307185499480,31cyclictest3165496-21ssh10:14:200
307185799471,4cyclictest3159145-21apt-get10:05:141
307185799470,9cyclictest3193471-21ssh10:53:261
307185799470,9cyclictest3097229-21sed08:10:241
307185799470,8cyclictest3093579-21seq08:01:151
307185799470,7cyclictest3176639-21sh10:29:561
307185499471,4cyclictest3092198-21apt-get08:00:110
307185799463,26cyclictest0-21swapper/108:25:391
307185799460,6cyclictest3261493-21interrupts12:30:171
307185499462,5cyclictest3260949-21apt-get12:30:120
307185499462,4cyclictest3236246-21apt-get11:55:140
307185499462,4cyclictest3127497-21apt-get09:20:130
307185499461,6cyclictest3176942-21apt-get10:30:130
307185499461,4cyclictest3239697-21apt-get12:00:140
307185499461,27cyclictest0-21swapper/010:16:160
3071854994610,20cyclictest3200668-21sh11:03:410
179699460,3rtkit-daemon0-21swapper/008:34:360
307185799451,5cyclictest3119764-21diskmemload11:12:221
307185799450,5cyclictest850-21runrttasks09:04:421
307185799450,5cyclictest3266184-21ssh12:36:291
307185499452,5cyclictest3194431-21apt-get10:55:130
307185499451,5cyclictest3097875-21python308:15:020
307185499450,8cyclictest3223965-21ssh11:36:100
307185799440,8cyclictest3248157-21ssh12:10:421
307185499441,9cyclictest3082668-21fschecks_time07:35:180
307185499441,3cyclictest3097837-21apt-get08:15:110
307185499441,11cyclictest3076497-21apt-get07:20:120
307185799430,7cyclictest3235279-21ssh11:53:071
307185799430,7cyclictest3235279-21ssh11:53:061
307185799430,5cyclictest3091262-21cat07:55:231
307185499439,19cyclictest3108235-21/usr/sbin/munin08:40:240
307185499432,5cyclictest3212145-21diskstats11:20:150
307185499431,9cyclictest3234866-21ssh11:52:030
307185499431,9cyclictest3234866-21ssh11:52:030
307185499431,6cyclictest3119764-21diskmemload09:38:410
307185499431,5cyclictest3119764-21diskmemload10:45:530
307185499430,9cyclictest3141876-21perl09:40:180
307185499430,8cyclictest3209970-21sh11:15:510
307185499430,8cyclictest3207608-21sh11:13:390
307185499430,8cyclictest3192705-21sh10:51:350
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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