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2026-04-16 - 11:06
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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 Thu Apr 16, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
203492280249,21sleep10-21swapper/119:09:261
201862279214,21sleep00-21swapper/019:07:200
202672276251,16sleep20-21swapper/219:08:222
203512250220,20sleep30-21swapper/319:09:283
222392610,0sleep30-21swapper/322:55:143
108942600,0sleep20-21swapper/222:09:052
312862580,0sleep10-21swapper/121:41:321
295802580,0sleep20-21swapper/223:20:012
61982570,0sleep26164-21munin-run21:00:012
244082560,0sleep20-21swapper/222:56:092
4212550,0sleep20-21swapper/219:35:122
8762540,0sleep10-21swapper/122:22:091
103762520,0sleep10-21swapper/100:07:041
266922210,0sleep30-21swapper/320:30:193
137962190,0sleep20-21swapper/222:30:152
46102180,0sleep10-21swapper/122:44:511
268392180,0sleep30-21swapper/321:59:133
316462160,0sleep10-21swapper/123:00:261
109452150,0sleep10-21swapper/122:48:241
18142140,0sleep10-21swapper/123:42:091
104572140,0sleep30-21swapper/321:49:123
189622120,0sleep30-21swapper/323:13:043
135572120,0sleep20-21swapper/223:10:032
21335290,0sleep0131rcuc/021:15:320
205169997,2cyclictest28-21ksoftirqd/200:00:002
205209983,3cyclictest275-21systemd-journal20:28:533
205169984,3cyclictest658-21snmpd00:18:382
205169981,4cyclictest275-21systemd-journal20:35:002
205149985,2cyclictest22-21ksoftirqd/119:15:021
205099986,2cyclictest12-21ksoftirqd/022:15:010
205099983,3cyclictest275-21systemd-journal21:42:420
205099980,7cyclictest21966-21rm00:14:310
205099980,2cyclictest22151-21ssh00:34:290
16557280,0sleep10-21swapper/122:51:251
24472270,0sleep00-21swapper/000:35:190
205209974,2cyclictest22282-21users19:10:203
205209973,3cyclictest275-21systemd-journal21:17:163
205209973,3cyclictest275-21systemd-journal19:25:003
205209973,2cyclictest275-21systemd-journal19:35:003
205169973,3cyclictest658-21snmpd21:34:512
205169972,2cyclictest275-21systemd-journal21:35:102
205169971,3cyclictest6548-21munin-run19:50:002
205149973,3cyclictest504-21dbus-daemon22:11:331
205149973,3cyclictest275-21systemd-journal23:26:151
205149973,3cyclictest23330-21tr23:55:171
205149973,2cyclictest275-21systemd-journal21:20:001
205099976,1cyclictest12-21ksoftirqd/000:10:000
205099973,3cyclictest658-21snmpd22:43:340
205099973,3cyclictest275-21systemd-journal22:30:130
205099973,3cyclictest0-21swapper/023:30:110
205099972,2cyclictest3947-21turbostat22:05:010
205099970,7cyclictest9328-21sh21:28:380
205099970,6cyclictest10627-21diskmemload21:20:050
9081260,0sleep20-21swapper/223:26:322
2669260,0sleep228-21ksoftirqd/223:03:062
205209966,0cyclictest0-21swapper/322:27:033
205209966,0cyclictest0-21swapper/321:25:043
205209966,0cyclictest0-21swapper/300:25:233
205209964,1cyclictest0-21swapper/321:13:253
205209963,2cyclictest658-21snmpd21:50:083
205209963,2cyclictest658-21snmpd00:36:393
205209963,2cyclictest504-21dbus-daemon20:38:043
205209963,2cyclictest30669-21sshd22:20:183
205209963,2cyclictest275-21systemd-journal00:30:143
205209963,2cyclictest2505-21ssh00:21:523
205209963,2cyclictest24804-21awk19:15:183
205209963,2cyclictest24216-21sh23:35:433
205209963,2cyclictest2012-21rm23:42:193
205209963,2cyclictest15346-21ssh22:30:413
205209963,2cyclictest13854-21sh23:30:083
205209963,2cyclictest13732-21gdbus20:05:013
205209963,2cyclictest0-21swapper/323:45:583
205209963,2cyclictest0-21swapper/323:05:313
205209962,3cyclictest6716-21cat22:45:193
205209962,3cyclictest658-21snmpd23:26:013
205209962,3cyclictest658-21snmpd23:23:553
205209962,3cyclictest658-21snmpd23:19:073
205209962,3cyclictest658-21snmpd22:39:513
205209962,3cyclictest658-21snmpd22:10:083
205209962,3cyclictest658-21snmpd21:40:153
205209962,3cyclictest658-21snmpd21:35:093
205209962,3cyclictest658-21snmpd20:50:113
205209962,3cyclictest658-21snmpd20:50:113
205209962,3cyclictest658-21snmpd20:45:473
205209962,3cyclictest658-21snmpd20:22:013
205209962,3cyclictest658-21snmpd20:16:053
205209962,3cyclictest658-21snmpd19:58:583
205209962,3cyclictest29752-21expr22:40:113
205209962,3cyclictest29381-21cat22:00:143
205209962,3cyclictest275-21systemd-journal22:15:173
205209962,3cyclictest275-21systemd-journal00:00:003
205209962,3cyclictest14778-21grep22:50:173
205209962,3cyclictest11929-21cat20:00:143
205209962,2cyclictest674-21lldpd19:30:553
205209962,1cyclictest141rcu_preempt19:45:003
205209962,1cyclictest0-21swapper/321:21:323
205209960,6cyclictest0-21swapper/323:50:233
205209960,6cyclictest0-21swapper/300:16:583
205209960,6cyclictest0-21swapper/300:12:023
205209960,2cyclictest4555-21/usr/sbin/munin19:45:173
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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