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2026-07-06 - 14:21
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackaslot8.osadl.org (updated Mon Jul 06, 2026 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
242062312279,22sleep10-21swapper/119:05:491
244262288258,19sleep20-21swapper/219:08:242
242932281215,21sleep00-21swapper/019:06:410
244782268237,20sleep30-21swapper/319:09:063
267482640,2sleep126746-21/usr/sbin/munin22:35:121
98742630,0sleep10-21swapper/123:43:191
252252620,0sleep20-21swapper/222:34:332
312302610,0sleep20-21swapper/220:35:122
81402600,0sleep30-21swapper/300:01:143
222002600,0sleep00-21swapper/022:51:450
24862580,0sleep00-21swapper/021:41:010
24862580,0sleep00-21swapper/021:41:010
211372550,0sleep10-21swapper/121:33:081
286042540,0sleep30-21swapper/322:16:123
202872540,0sleep30-21swapper/321:51:503
172162540,0sleep00-21swapper/022:10:010
316752200,0sleep20-21swapper/221:39:552
296892190,0sleep00-21swapper/022:17:010
9882180,0sleep30-21swapper/323:57:223
210522180,0sleep10-21swapper/121:13:271
174452170,0sleep20-21swapper/222:29:532
265552160,0sleep226556-21unixbench_singl21:55:212
161372140,1sleep316132-21gpgv21:50:023
2465599124,1cyclictest141rcu_preempt21:25:112
191992110,0sleep20-21swapper/221:31:342
41112100,3sleep122-21ksoftirqd/123:20:171
298762100,0sleep20-21swapper/222:36:442
2464699109,1cyclictest12-21ksoftirqd/021:30:000
16332100,0sleep20-21swapper/222:20:122
120292100,0sleep10-21swapper/122:06:091
31177290,0sleep20-21swapper/200:35:142
246469998,1cyclictest12-21ksoftirqd/000:00:010
246469990,8cyclictest27930-21ssh00:33:120
246469990,1cyclictest141rcu_preempt20:25:110
246609986,1cyclictest34-21ksoftirqd/320:00:013
246559983,1cyclictest28-21ksoftirqd/221:10:122
246559980,0cyclictest141rcu_preempt00:00:012
246519984,3cyclictest275-21systemd-journal20:51:121
246519980,7cyclictest25517-21ssh21:15:321
246469984,3cyclictest658-21snmpd23:00:130
11041280,0sleep00-21swapper/021:00:170
246609976,1cyclictest34-21ksoftirqd/319:15:003
246609974,2cyclictest504-21dbus-daemon19:20:013
246609973,3cyclictest658-21snmpd00:15:483
246609973,2cyclictest275-21systemd-journal20:21:113
246609973,2cyclictest22097-21libinput-device21:33:533
246609973,1cyclictest0-21swapper/323:05:263
246559975,2cyclictest28-21ksoftirqd/220:25:002
246559975,2cyclictest28-21ksoftirqd/219:40:012
246559975,1cyclictest28-21ksoftirqd/223:45:012
246559974,2cyclictest658-21snmpd22:45:132
246559973,3cyclictest275-21systemd-journal21:20:002
246559972,1cyclictest51250irq/139-enp4s0-22:10:132
246559971,3cyclictest11122-21munin-run23:25:012
246559971,0cyclictest141rcu_preempt00:25:132
246559970,0cyclictest141rcu_preempt23:25:152
246519973,3cyclictest275-21systemd-journal21:05:001
246469973,3cyclictest8705-21cron19:45:010
246469973,3cyclictest658-21snmpd20:46:030
246469973,3cyclictest504-21dbus-daemon21:33:280
246469973,3cyclictest21404-21expr23:50:140
246469973,3cyclictest13596-21ntpq23:45:170
246469970,5cyclictest275-21systemd-journal20:07:110
246469970,1cyclictest141rcu_preempt22:30:120
246609966,0cyclictest0-21swapper/323:20:323
246609966,0cyclictest0-21swapper/321:27:053
246609966,0cyclictest0-21swapper/300:28:223
246609963,2cyclictest658-21snmpd23:14:133
246609963,2cyclictest658-21snmpd21:38:013
246609963,2cyclictest658-21snmpd20:01:563
246609963,2cyclictest658-21snmpd19:43:593
246609963,2cyclictest34-21ksoftirqd/319:30:013
246609963,2cyclictest32345-21ssh21:20:153
246609963,2cyclictest30161-21ssh22:56:313
246609963,2cyclictest28280-21sed23:15:153
246609963,2cyclictest275-21systemd-journal22:11:323
246609963,2cyclictest26004-21ssh23:53:013
246609963,2cyclictest21979-11brltty21:00:223
246609963,2cyclictest1340-21sh00:36:203
246609963,2cyclictest12419-21chrt00:24:093
246609963,2cyclictest0-21swapper/322:00:053
246609963,1cyclictest0-21swapper/300:30:393
246609962,4cyclictest0-21swapper/323:45:193
246609962,3cyclictest9319-21cat19:45:113
246609962,3cyclictest9319-21cat19:45:113
246609962,3cyclictest658-21snmpd23:41:473
246609962,3cyclictest658-21snmpd23:26:353
246609962,3cyclictest658-21snmpd22:39:363
246609962,3cyclictest658-21snmpd22:22:573
246609962,3cyclictest658-21snmpd22:06:363
246609962,3cyclictest658-21snmpd21:11:123
246609962,3cyclictest658-21snmpd20:36:423
246609962,3cyclictest658-21snmpd19:51:233
246609962,3cyclictest30976-21cron20:35:003
246609962,3cyclictest29168-21cat23:35:153
246609962,3cyclictest29168-21cat23:35:153
246609962,3cyclictest275-21systemd-journal22:30:153
246609962,3cyclictest20572-21cat23:30:153
246609962,3cyclictest10243-21ls22:25:153
246609961,3cyclictest275-21systemd-journal21:41:233
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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