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2026-08-17 - 08:35
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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 Mon Aug 17, 2026 00:44:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23239997405173,4556cyclictest12407-21kworker/0:019:15:330
23239991464791,4345cyclictest12407-21kworker/0:019:23:120
23239973963666,3680cyclictest12407-21kworker/0:019:14:050
20232774182,204sleep00-21swapper19:08:020
23239950263,199cyclictest11-21ksoftirqd/019:55:160
23239947753,419cyclictest32339-21seq23:03:010
23239947535,380cyclictest16091-21awk21:11:150
23239945732,364cyclictest13571-21munin-node23:36:140
23239944831,357cyclictest26331-21munin-node22:51:400
23239944671,362cyclictest12-21rcu_preempt21:10:010
23239944468,363cyclictest13-21rcuc/000:11:280
23239944442,342cyclictest28943-21kworker/u2:000:19:350
23239943238,381cyclictest4946-21kworker/u2:123:16:450
23239943050,318cyclictest28669-21ssh00:10:050
23239942539,372cyclictest19455-21ssh23:47:250
23239942263,259cyclictest11-21ksoftirqd/021:36:340
23239942233,376cyclictest351950irq/10-yenta21:55:340
23239941935,371cyclictest15039-21diskmemload00:01:100
23239941856,87cyclictest12907-21ssh23:32:190
23239941854,351cyclictest13-21rcuc/022:27:510
23239941556,359cyclictest0-21swapper22:06:430
23239941352,346cyclictest22173-21latency_hist23:55:030
23239941137,361cyclictest4924-21runrttasks19:40:280
23239941028,312cyclictest94312sleep000:40:060
23239940644,348cyclictest0-21swapper22:22:590
23239940553,293cyclictest15039-21diskmemload22:18:210
23239940335,186cyclictest3708-21chrt00:25:580
23239940250,293cyclictest21240-21kworker/u2:022:47:250
23239940152,165cyclictest29523-21munin-node20:20:330
23239939953,285cyclictest4924-21runrttasks20:35:540
23239939941,298cyclictest351950irq/10-yenta21:27:330
23239939852,287cyclictest6051-21seq22:02:070
23239939752,285cyclictest15039-21diskmemload22:55:510
23239939650,287cyclictest2321-21cyclictest19:34:300
23239939351,282cyclictest32612-21latency_hist20:30:030
23239939351,282cyclictest30221-21kworker/u2:121:50:540
23239939153,315cyclictest639-21which00:20:150
23239939050,281cyclictest4332-21rm23:12:540
23239939046,284cyclictest1644-21sshd20:32:150
23239939043,333cyclictest351950irq/10-yenta00:30:290
23239939035,355cyclictest0-21swapper22:13:040
23239938939,336cyclictest1787-21fschecks_count23:06:450
23239938855,319cyclictest18440-21ssh22:31:000
23239938849,280cyclictest23959-21rm22:44:400
23239938834,162cyclictest11551-21idleruntime21:00:170
23239938731,356cyclictest0-21swapper20:14:400
23239938535,291cyclictest15039-21diskmemload23:57:420
23239938532,340cyclictest7764-21munin-node20:50:500
23239938437,165cyclictest4924-21runrttasks21:22:360
23239938335,290cyclictest25591-21kworker/u2:221:45:400
23239938331,292cyclictest20973-21perl22:36:290
23239938328,341cyclictest4924-21runrttasks20:42:170
23239938324,289cyclictest12482-21chrt19:35:180
23239938253,269cyclictest28931-21nfs_client21:40:520
23239938074,293cyclictest11049-21ssh23:28:560
23239938054,267cyclictest21780-21kworker/u2:021:33:230
23239938018,301cyclictest23755-21expr20:05:250
23239937833,285cyclictest196022sleep019:54:520
23239937634,282cyclictest4305-21snmpd21:00:040
23239937532,281cyclictest7573-21awk23:20:400
23239937430,285cyclictest22643-19scsi_id20:01:020
23239937333,163cyclictest4285-21lldpd23:44:040
23239937131,327cyclictest27131-21munin-node20:15:160
23239936934,0cyclictest9430-21seq19:25:440
23239936872,282cyclictest18463-21missed_timers21:16:270
23239935746,297cyclictest16060-21munin-node19:45:270
23239934249,234cyclictest11-21ksoftirqd/020:45:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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