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2026-04-24 - 12:13
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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 Fri Apr 24, 2026 00:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
316542349286,19sleep20-21swapper/219:07:332
314782286220,22sleep30-21swapper/319:05:333
316412266234,21sleep10-21swapper/119:07:241
317812262232,19sleep00-21swapper/019:09:120
69972610,0sleep00-21swapper/023:54:590
318952610,0sleep20-21swapper/222:52:082
128822570,0sleep10-21swapper/100:17:231
16722550,0sleep20-21swapper/221:16:412
316432530,0sleep30-21swapper/322:51:563
177742520,0sleep30-21swapper/321:00:123
286642210,0sleep30-21swapper/321:33:083
64052190,0sleep20-21swapper/222:36:492
142452190,0sleep10-21swapper/123:00:361
78482180,0sleep30-21swapper/300:14:543
34202180,0sleep00-21swapper/022:35:160
6562170,0sleep00-21swapper/021:15:540
251902150,0sleep30-21swapper/323:07:353
4272130,0sleep30-21swapper/321:55:063
31937991311,1cyclictest12-21ksoftirqd/023:59:590
246542120,0sleep20-21swapper/223:45:212
17994290,0sleep30-21swapper/300:20:183
6982280,0sleep30-21swapper/323:35:163
319419980,7cyclictest17320-21ssh21:25:522
319419980,7cyclictest17320-21ssh21:25:512
2934280,0sleep20-21swapper/200:11:082
12991280,0sleep10-21swapper/100:36:531
12288280,0sleep1211rcuc/120:45:211
6609270,0sleep30-21swapper/320:35:143
319459973,3cyclictest31654-21apt-get21:35:113
319459973,3cyclictest275-21systemd-journal20:30:473
319459973,3cyclictest275-21systemd-journal00:15:253
319459973,3cyclictest1-21systemd22:05:183
319419977,0cyclictest0-21swapper/200:05:302
319419973,3cyclictest504-21dbus-daemon20:40:002
319419973,3cyclictest504-21dbus-daemon19:20:002
319419973,2cyclictest275-21systemd-journal00:27:242
319419971,3cyclictest504-21dbus-daemon22:45:002
319419970,1cyclictest51250irq/139-enp4s0-21:23:352
319389977,0cyclictest0-21swapper/122:25:191
319389976,1cyclictest11844-21ssh22:20:231
319389973,3cyclictest275-21systemd-journal22:08:261
319389973,3cyclictest12188-21awk22:40:181
319389971,2cyclictest275-21systemd-journal22:39:551
319379976,1cyclictest12-21ksoftirqd/023:45:010
319379976,1cyclictest12-21ksoftirqd/019:15:010
319379973,3cyclictest658-21snmpd00:36:360
319379972,4cyclictest0-21swapper/000:05:110
26842270,0sleep10-21swapper/121:50:411
319459963,2cyclictest729-21chrt23:50:263
319459963,2cyclictest663-21runrttasks22:19:293
319459963,2cyclictest658-21snmpd22:12:183
319459963,2cyclictest658-21snmpd21:26:523
319459963,2cyclictest658-21snmpd21:26:523
319459963,2cyclictest6386-21users19:20:173
319459963,2cyclictest504-21dbus-daemon22:00:553
319459963,2cyclictest27941-21ssh00:26:113
319459963,2cyclictest275-21systemd-journal19:36:293
319459963,2cyclictest26830-21ssh23:27:593
319459963,2cyclictest19347-21ssh23:42:493
319459963,2cyclictest17608-21ssh23:22:213
319459963,2cyclictest17608-21ssh23:22:213
319459963,2cyclictest1477-21chrt22:34:273
319459963,2cyclictest11239-21sh20:45:133
319459963,2cyclictest11052-21ssh21:22:263
319459962,3cyclictest8263-21cat23:55:143
319459962,3cyclictest658-21snmpd23:49:463
319459962,3cyclictest658-21snmpd22:56:303
319459962,3cyclictest658-21snmpd22:40:293
319459962,3cyclictest658-21snmpd21:15:123
319459962,3cyclictest658-21snmpd21:08:513
319459962,3cyclictest658-21snmpd20:51:113
319459962,3cyclictest658-21snmpd20:17:473
319459962,3cyclictest658-21snmpd20:12:143
319459962,3cyclictest658-21snmpd19:58:083
319459962,3cyclictest658-21snmpd19:50:253
319459962,3cyclictest658-21snmpd19:15:133
319459962,3cyclictest504-21dbus-daemon22:20:073
319459962,3cyclictest504-21dbus-daemon00:00:003
319459962,3cyclictest28928-21ssh21:52:153
319459962,3cyclictest25527-21cat20:05:153
319459962,3cyclictest24214-21find00:05:123
319459962,3cyclictest2376-21sed20:25:193
319459962,3cyclictest12895-21cat23:00:143
319459962,3cyclictest0-21swapper/323:34:183
319459962,2cyclictest18808-21df22:25:143
319459960,5cyclictest4822-21/usr/sbin/munin23:15:173
319459960,5cyclictest19435-21/usr/sbin/munin22:45:153
319459960,3cyclictest22898-21basename21:10:153
319419966,0cyclictest0-21swapper/222:05:132
319419965,1cyclictest29723-21/usr/sbin/munin23:10:172
319419963,2cyclictest9904-21cat20:40:182
319419963,2cyclictest9729-21ssh21:40:222
319419963,2cyclictest658-21snmpd23:38:482
319419963,2cyclictest658-21snmpd20:06:202
319419963,2cyclictest30700-21sh21:34:402
319419963,2cyclictest275-21systemd-journal00:20:002
319419963,2cyclictest27051-21sh21:50:482
319419963,2cyclictest23607-21rm23:25:322
319419963,2cyclictest13574-21cat23:20:112
319419963,2cyclictest13574-21cat23:20:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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