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2026-08-13 - 10:12
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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 Aug 13, 2026 00:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
140212280251,19sleep10-21swapper/119:07:281
139522270231,28sleep00-21swapper/019:06:340
141892269237,21sleep20-21swapper/219:09:382
141342263231,21sleep30-21swapper/319:08:543
233352640,0sleep30-21swapper/323:15:393
108202590,0sleep20-21swapper/221:32:352
67872580,0sleep10-21swapper/121:50:001
63332580,0sleep10-21swapper/121:10:191
37622580,0sleep10-21swapper/122:06:261
234352560,0sleep00-21swapper/023:54:590
101822550,0sleep00-21swapper/000:25:150
100122550,0sleep20-21swapper/221:51:062
245732540,0sleep20-21swapper/200:14:592
108682520,0sleep00-21swapper/021:32:370
208512510,0sleep10-21swapper/123:15:011
245292210,0sleep30-21swapper/323:55:153
95792190,0sleep00-21swapper/022:10:140
188182170,0sleep30-21swapper/300:30:183
157242170,0sleep10-21swapper/122:33:131
190522150,0sleep00-21swapper/000:30:200
65542140,1sleep00-21swapper/020:00:200
318642140,0sleep10-21swapper/100:19:161
35212130,0sleep00-21swapper/021:47:310
136082130,0sleep10-21swapper/123:49:011
48262120,0sleep10-21swapper/122:26:201
299042100,1sleep20-21swapper/200:36:552
5305290,0sleep30-21swapper/322:07:363
32559290,0sleep00-21swapper/021:25:520
143369990,8cyclictest18061-21irqstats22:15:130
18570280,0sleep118568-21ls00:30:171
143469984,3cyclictest504-21dbus-daemon20:51:263
143469983,1cyclictest0-21swapper/322:00:153
143439985,2cyclictest658-21snmpd21:42:242
143439983,3cyclictest275-21systemd-journal21:20:162
143439980,1cyclictest16531-21dump-pmu-power19:15:012
143419986,1cyclictest27646-21idleruntime-cro20:50:011
143419980,7cyclictest29886-21sleep20:55:011
143369986,2cyclictest24843-21timerwakeupswit20:40:180
23167270,0sleep30-21swapper/321:59:473
19787270,0chrt0-21swapper/323:33:123
143469976,1cyclictest34-21ksoftirqd/300:30:003
143469976,1cyclictest0-21swapper/323:25:583
143469973,3cyclictest275-21systemd-journal00:10:003
143469973,3cyclictest23725-11brltty20:40:563
143469973,1cyclictest0-21swapper/322:57:503
143469973,1cyclictest0-21swapper/322:21:573
143439976,1cyclictest4447-21diskmemload23:57:322
143439973,3cyclictest658-21snmpd23:27:342
143439973,1cyclictest0-21swapper/222:34:462
143419974,2cyclictest504-21dbus-daemon22:25:011
143419974,2cyclictest501-21in:imuxsock19:45:001
143419972,4cyclictest0-21swapper/121:20:161
143419971,5cyclictest16571-21apt-get00:10:111
143369975,1cyclictest6723-21ssh00:23:260
143369973,3cyclictest6879-21ntpq23:25:180
143369973,3cyclictest504-21dbus-daemon19:32:080
143369972,3cyclictest19287-21turbostat22:55:000
6314260,0sleep30-21swapper/322:46:323
143469966,0cyclictest0-21swapper/322:35:343
143469966,0cyclictest0-21swapper/300:20:053
143469964,1cyclictest34-21ksoftirqd/320:00:003
143469963,2cyclictest7864-21head21:50:143
143469963,2cyclictest501-21in:imuxsock21:25:163
143469963,2cyclictest501-21in:imuxsock20:07:103
143469963,2cyclictest34-21ksoftirqd/320:40:013
143469963,2cyclictest29489-21smart_sda23:00:183
143469963,2cyclictest29489-21smart_sda23:00:183
143469963,2cyclictest275-21systemd-journal23:40:003
143469963,2cyclictest22898-21expr23:35:113
143469963,2cyclictest16299-21ssh21:16:153
143469963,2cyclictest15901-21ssh23:11:213
143469963,2cyclictest10159-21ssh21:12:583
143469963,1cyclictest0-21swapper/322:18:433
143469962,3cyclictest658-21snmpd23:45:413
143469962,3cyclictest658-21snmpd23:20:373
143469962,3cyclictest658-21snmpd21:43:453
143469962,3cyclictest658-21snmpd21:02:053
143469962,3cyclictest658-21snmpd20:59:533
143469962,3cyclictest658-21snmpd19:26:003
143469962,3cyclictest658-21snmpd19:22:003
143469962,3cyclictest658-21snmpd00:36:003
143469962,3cyclictest28898-21expr19:40:133
143469962,3cyclictest23433-21unixbench_singl21:20:193
143469962,3cyclictest17424-21basename20:25:153
143469962,3cyclictest15645-21ls23:50:113
143469962,1cyclictest0-21swapper/322:50:033
143469962,1cyclictest0-21swapper/322:33:083
143469962,1cyclictest0-21swapper/321:33:043
143469962,1cyclictest0-21swapper/300:00:353
143469961,4cyclictest0-21swapper/321:45:153
143469960,6cyclictest0-21swapper/322:25:123
143469960,6cyclictest0-21swapper/321:37:053
143469960,5cyclictest8909-21/usr/sbin/munin22:10:203
143469960,5cyclictest25069-21ntp_states19:30:173
143439966,0cyclictest0-21swapper/222:08:562
143439963,2cyclictest7715-21cat23:45:142
143439963,2cyclictest658-21snmpd23:50:082
143439963,2cyclictest658-21snmpd23:06:042
143439963,2cyclictest658-21snmpd22:42:392
143439963,2cyclictest504-21dbus-daemon21:03:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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