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2026-03-14 - 07:12
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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 100 highest latencies:
System rack6slot5.osadl.org (updated Sat Mar 14, 2026 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
274529998575229,4617cyclictest17437-21kworker/0:219:29:070
274529992354987,4197cyclictest24517-21kworker/0:020:29:380
274529989454571,4363cyclictest17437-21kworker/0:219:35:150
274529987784375,4344cyclictest24517-21kworker/0:020:49:310
274529986744556,4114cyclictest17437-21kworker/0:219:15:570
274529985294383,4142cyclictest8167-21kworker/0:019:43:050
274529981134349,3749cyclictest24517-21kworker/0:020:33:190
274529980543999,4006cyclictest17437-21kworker/0:219:14:150
274529979294361,3537cyclictest8167-21kworker/0:020:03:070
274529978463904,3918cyclictest8167-21kworker/0:020:17:020
274529977124126,3535cyclictest17437-21kworker/0:219:22:320
274529976913826,3850cyclictest8167-21kworker/0:019:59:040
274529974243886,3487cyclictest17437-21kworker/0:219:33:410
274529967623638,3073cyclictest8167-21kworker/0:020:13:440
274529965513566,2962cyclictest24517-21kworker/0:020:51:470
274529961133325,2737cyclictest5208-21kworker/0:121:08:200
274529958563305,2500cyclictest8167-21kworker/0:019:49:410
274529955002746,2739cyclictest5208-21kworker/0:121:10:190
274529946692550,2108cyclictest8167-21kworker/0:019:51:160
269612726182,179sleep00-21swapper19:06:350
274529948633,439cyclictest8010-21diskmemload23:23:300
274529948432,438cyclictest22854-21ssh00:13:570
274529947844,373cyclictest12290-21ssh22:33:070
274529947632,430cyclictest10456-21ssh22:29:490
274529945632,239cyclictest31094-21python23:16:150
274529944561,88cyclictest13-21rcuc/000:06:220
274529943864,258cyclictest13-21rcuc/023:31:480
274529943235,382cyclictest2695-21awk22:10:590
274529943161,357cyclictest0-21swapper23:28:360
274529943134,381cyclictest4272-21snmpd23:44:440
2745299431102,315cyclictest11-21ksoftirqd/022:01:310
274529942750,363cyclictest8010-21diskmemload21:15:490
274529942541,369cyclictest17411-21df_inode21:30:350
274529942435,375cyclictest27616-21ssh23:09:060
274529942266,343cyclictest23086-1kworker/0:1H23:51:360
274529942036,324cyclictest22709-21kworker/u2:200:29:580
274529941428,372cyclictest11-21ksoftirqd/000:20:430
274529941337,361cyclictest23520-21munin-node21:45:120
274529941233,365cyclictest25298-21ssh23:03:180
274529940935,359cyclictest16043-21ssh23:57:050
274529940846,302cyclictest0-21swapper21:39:150
274529940836,311cyclictest27341-21rm21:53:070
274529940835,312cyclictest27559-21sh20:35:160
274529940832,315cyclictest29029-21missed_timers23:11:250
274529940824,145cyclictest364-21python00:36:180
274529940540,351cyclictest13-21rcuc/021:55:100
274529940533,358cyclictest12715-21munin-node21:21:330
274529940519,0cyclictest21927-21df_abs21:40:440
274529940138,301cyclictest6371-21ssh22:20:160
274529940134,190cyclictest16758-21ssh21:29:150
274529940034,295cyclictest16453-21df20:05:190
274529940018,320cyclictest30751-21missed_timers00:31:250
274529939837,301cyclictest31834-21kworker/u2:123:39:280
274529939814,369cyclictest25195-21cron00:20:010
274529939717,319cyclictest1571-21kworker/u2:222:16:080
274529939534,177cyclictest15765-21cut22:40:570
274529939333,301cyclictest23200-21ssh22:58:420
274529939232,345cyclictest209942sleep022:53:260
274529939033,297cyclictest32746-21ssh22:05:450
274529938936,293cyclictest2431-21munin-node20:55:490
274529938834,340cyclictest30105-21strings20:40:460
274529938733,340cyclictest18785-21ssh22:48:070
274529938233,289cyclictest8010-21diskmemload23:45:320
274529938135,287cyclictest8010-21diskmemload22:36:160
274529938124,343cyclictest17578-21ssh00:00:580
274529938025,292cyclictest23692-21cut20:25:040
274529934682,250cyclictest5361-21python21:00:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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