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2026-07-18 - 12:17
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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 all highest latencies:
System rack6slot5.osadl.org (updated Sat Jul 18, 2026 00:43:45)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
4129997065237,4466cyclictest24674-21kworker/0:219:12:240
4129961133344,2765cyclictest24674-21kworker/0:219:15:380
324502779186,204sleep00-21swapper19:07:050
4129949034,456cyclictest13356-21diskmemload23:36:510
4129948934,442cyclictest29735-21ssh00:10:120
4129948733,441cyclictest11371-21ssh23:28:470
4129948733,440cyclictest25604-21ssh22:48:070
4129948634,439cyclictest10752-21ssh22:15:310
4129948532,439cyclictest13356-21diskmemload23:21:190
4129948432,439cyclictest13356-21diskmemload22:29:460
4129948431,439cyclictest13356-21diskmemload23:48:070
4129947932,433cyclictest10113-21sort21:00:240
4129947837,428cyclictest29265-21seq00:08:230
4129947537,424cyclictest13356-21diskmemload21:26:100
4129947332,372cyclictest4305-21snmpd23:02:050
4129947331,87cyclictest6523-21apt-get23:17:130
4129947234,423cyclictest6923-21df19:25:170
4129947231,441cyclictest0-21swapper20:26:510
4129946932,376cyclictest15567-21chrt19:47:000
4129946834,421cyclictest13221-21kworker/0:120:11:150
4129946734,363cyclictest13356-21diskmemload23:13:210
4129946331,371cyclictest29471-21gltestperf21:45:270
4129946133,369cyclictest27753-21sh22:52:410
4129945932,367cyclictest29345-21ssh22:56:060
4129941431,370cyclictest14316-21strings21:10:540
4129941338,361cyclictest7888-21rm00:32:080
4129941235,364cyclictest1-21init00:16:150
4129941038,359cyclictest4462-21rm22:00:510
4129940935,361cyclictest11-21ksoftirqd/020:00:010
4129940835,360cyclictest6909-21ssh22:06:070
4129940735,372cyclictest0-21swapper00:39:140
4129940731,362cyclictest13356-21diskmemload23:34:380
4129940636,357cyclictest13356-21diskmemload21:59:010
4129940534,357cyclictest21670-21ssh23:51:030
4129940433,371cyclictest0-21swapper19:37:500
4129940332,357cyclictest1791-21ssh00:20:130
4129939825,87cyclictest13356-21diskmemload21:54:250
4129939739,298cyclictest25105-21turbostat.cron00:00:020
4129939631,365cyclictest0-21swapper19:31:590
4129939532,350cyclictest12634-21munin-node22:20:580
4129939531,350cyclictest3153-21sendmail_mailqu20:40:500
4129939531,350cyclictest25328-21grep21:35:390
4129939233,346cyclictest351950irq/10-yenta21:31:190
4129939233,249cyclictest16859-21kworker/u2:222:39:260
4129939135,356cyclictest0-21swapper22:33:360
4129939132,163cyclictest25736-21ssh00:00:370
4129938934,341cyclictest13356-21diskmemload21:43:250
4129938834,342cyclictest13356-21diskmemload21:24:500
4129938834,340cyclictest13356-21diskmemload22:41:420
4129938834,340cyclictest13356-21diskmemload22:12:140
4129938831,357cyclictest0-21swapper19:20:320
4129938758,268cyclictest12850-21awk19:40:280
4129938733,340cyclictest13356-21diskmemload00:27:500
4129938732,341cyclictest13356-21diskmemload23:42:400
4129938731,341cyclictest13356-21diskmemload21:17:380
4129938332,337cyclictest8538-21cat20:55:330
4129938235,347cyclictest0-21swapper23:07:560
4129938132,288cyclictest1262-21python20:35:480
4129937733,284cyclictest6383-21cpu20:50:250
4129937334,279cyclictest26101-21strings20:15:400
4129937232,162cyclictest31939-21hddtemp_smartct20:30:510
4129935323,270cyclictest22318-21nfs_client20:05:330
4129935133,260cyclictest403-21cyclictest21:10:020
4129934717,270cyclictest28308-21proc_pri20:20:550
4129933261,257cyclictest21430-21sshd20:04:300
4129932552,260cyclictest5332-21cstates20:46:000
4129932454,257cyclictest12-21rcu_preempt19:50:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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