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2026-03-14 - 04:18
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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 Sat Mar 14, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
295502312281,21sleep10-21swapper/119:08:061
295612298272,17sleep20-21swapper/219:08:152
295862269243,17sleep00-21swapper/019:08:330
295472263230,22sleep30-21swapper/319:08:033
159882640,0sleep00-21swapper/021:46:160
34162630,0sleep00-21swapper/019:20:140
308782620,0sleep30-21swapper/300:13:183
30682590,0sleep20-21swapper/222:57:052
136632590,0sleep30-21swapper/323:03:553
111992590,0sleep20-21swapper/200:20:222
37952570,0sleep00-21swapper/022:57:400
218692570,0sleep30-21swapper/323:08:563
20152560,0sleep10-21swapper/123:35:241
129692560,0sleep10-21swapper/100:21:451
56722540,0sleep00-21swapper/023:18:540
137132180,0sleep20-21swapper/200:02:442
227272110,0sleep10-21swapper/123:48:461
28848290,2sleep0131rcuc/022:14:360
21121290,1sleep20-21swapper/222:09:562
11871290,1sleep20-21swapper/222:42:522
9783280,0sleep10-21swapper/100:00:161
6921280,0sleep00-21swapper/000:37:390
348280,0sleep00-21swapper/000:14:470
32219280,1sleep332218-21irqstats22:55:143
298099982,5cyclictest0-21swapper/321:45:013
298029986,2cyclictest25387-21kworker/1:222:53:551
896270,0sleep20-21swapper/223:55:112
298099974,2cyclictest5745-21dpkg22:20:013
298099974,2cyclictest504-21dbus-daemon23:25:533
298099974,2cyclictest32737-21memory20:25:153
298099974,2cyclictest275-21systemd-journal00:33:193
298099973,3cyclictest504-21dbus-daemon21:00:013
298099973,3cyclictest275-21systemd-journal21:31:203
298099973,3cyclictest275-21systemd-journal19:40:293
298099970,7cyclictest0-21swapper/321:45:233
298059973,3cyclictest560-21gdbus00:30:002
298059973,3cyclictest275-21systemd-journal23:53:182
298059973,3cyclictest275-21systemd-journal20:21:222
298059972,2cyclictest21698-21sed21:30:142
298059970,7cyclictest18088-21ssh22:46:212
298059970,3cyclictest275-21systemd-journal21:58:442
298029973,3cyclictest658-21snmpd21:17:201
298029973,1cyclictest0-21swapper/121:46:341
298029970,4cyclictest13864-21munin-run19:45:011
298029970,3cyclictest5192-21/usr/sbin/munin19:25:211
297989973,3cyclictest8935-21ntpq23:20:150
297989973,3cyclictest658-21snmpd00:00:100
297989973,3cyclictest560-21gdbus20:30:010
297989973,3cyclictest275-21systemd-journal00:24:190
297989973,3cyclictest24018-21cat22:50:150
297989973,1cyclictest0-21swapper/022:25:490
297989973,1cyclictest0-21swapper/022:21:240
297989973,1cyclictest0-21swapper/021:34:270
297989973,1cyclictest0-21swapper/021:23:320
297989971,2cyclictest12-21ksoftirqd/023:35:190
297989970,5cyclictest8389-21grep00:00:000
17246270,0sleep20-21swapper/222:26:152
1445270,0sleep00-21swapper/021:37:420
600260,0sleep10-21swapper/122:35:301
298099966,0cyclictest0-21swapper/321:10:213
298099963,2cyclictest880-21expr23:55:113
298099963,2cyclictest8423-21/usr/sbin/munin20:45:173
298099963,2cyclictest674-21lldpd20:07:003
298099963,2cyclictest674-21lldpd19:17:443
298099963,2cyclictest674-21lldpd19:17:443
298099963,2cyclictest6724-21ssh22:40:073
298099963,2cyclictest658-21snmpd21:52:423
298099963,2cyclictest658-21snmpd20:00:423
298099963,2cyclictest5458-21expr19:25:133
298099963,2cyclictest324-21awk23:15:143
298099963,2cyclictest30632-21ntp_kernel_err20:20:153
298099963,2cyclictest30276-21ssh21:15:183
298099963,2cyclictest27535-21cat20:15:113
298099963,2cyclictest275-21systemd-journal21:24:023
298099963,2cyclictest25275-21fschecks_count23:50:133
298099963,2cyclictest24467-21sh00:09:423
298099963,2cyclictest2399-21ssh21:38:283
298099963,2cyclictest23115-21cat22:10:183
298099963,2cyclictest18385-21grep21:05:133
298099963,2cyclictest15428-21cat22:25:173
298099963,2cyclictest1-21systemd00:20:353
298099963,1cyclictest0-21swapper/323:40:593
298099963,1cyclictest0-21swapper/323:22:133
298099962,3cyclictest9661-21apt-get19:35:113
298099962,3cyclictest7928-21ls23:40:013
298099962,3cyclictest658-21snmpd22:45:383
298099962,3cyclictest658-21snmpd22:38:413
298099962,3cyclictest658-21snmpd22:31:263
298099962,3cyclictest658-21snmpd21:56:133
298099962,3cyclictest658-21snmpd20:43:363
298099962,3cyclictest658-21snmpd19:47:023
298099962,3cyclictest658-21snmpd19:32:043
298099962,3cyclictest658-21snmpd19:21:163
298099962,3cyclictest275-21systemd-journal00:38:523
298099962,3cyclictest1846-21cat20:30:113
298099962,3cyclictest1-21systemd22:00:183
298099962,2cyclictest275-21systemd-journal23:46:403
298099962,1cyclictest0-21swapper/300:17:523
298099961,3cyclictest275-21systemd-journal22:51:553
298099960,5cyclictest25120-21irqstats23:30:143
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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