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2026-04-30 - 12:24
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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 30, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
167842279232,19sleep20-21swapper/219:08:402
168032273248,16sleep10-21swapper/119:08:551
167822260228,21sleep00-21swapper/019:08:390
165502258212,37sleep30-21swapper/319:05:403
100632690,4sleep228-21ksoftirqd/222:55:442
245382630,0sleep30-21swapper/321:20:143
53792620,0sleep20-21swapper/223:58:182
130402610,0sleep10-21swapper/122:14:091
8182570,0sleep00-21swapper/022:28:070
195682570,0sleep00-21swapper/021:17:030
77622560,0sleep10-21swapper/121:49:401
136702230,0sleep20-21swapper/222:14:402
238852180,0sleep10-21swapper/100:31:561
168112180,0sleep10-21swapper/100:05:381
168062180,0sleep20-21swapper/221:55:022
85152170,0sleep00-21swapper/023:38:340
61702170,0sleep30-21swapper/323:36:443
256762150,0sleep10-21swapper/122:44:261
42362140,0sleep00-21swapper/022:08:440
115542140,1chrt0-21swapper/222:35:012
114192140,0sleep20-21swapper/200:23:452
313822130,0sleep00-21swapper/022:48:410
172092130,0sleep10-21swapper/119:10:111
244932120,0sleep20-21swapper/200:10:192
1700899109,1cyclictest22-21ksoftirqd/100:00:011
170039997,1cyclictest12-21ksoftirqd/023:30:010
11476290,0sleep10-21swapper/120:05:211
31047280,0sleep00-21swapper/021:43:580
170129980,7cyclictest31083-21ssh00:37:232
170089983,3cyclictest275-21systemd-journal21:05:131
170089983,3cyclictest275-21systemd-journal20:27:581
170089981,3cyclictest275-21systemd-journal22:59:561
170089980,1cyclictest141rcu_preempt19:15:131
170039983,3cyclictest7787-21cups-browsed21:30:000
14344280,0sleep10-21swapper/121:53:081
13507280,0sleep30-21swapper/322:14:333
8524270,0sleep30-21swapper/300:21:303
170179973,3cyclictest275-21systemd-journal22:35:283
170179973,3cyclictest1-21systemd22:50:173
170179973,2cyclictest275-21systemd-journal23:43:503
170179972,3cyclictest658-21snmpd00:07:443
170129973,3cyclictest658-21snmpd19:16:142
170129973,2cyclictest275-21systemd-journal21:36:302
170129972,3cyclictest275-21systemd-journal22:50:342
170089974,2cyclictest16512-21grep23:00:141
170089973,3cyclictest7860-21diskstats21:10:131
170089973,3cyclictest275-21systemd-journal22:33:391
170089973,3cyclictest275-21systemd-journal00:24:551
170039973,3cyclictest275-21systemd-journal22:59:580
170039973,3cyclictest275-21systemd-journal22:43:440
170039973,3cyclictest275-21systemd-journal20:48:550
170039973,3cyclictest275-21systemd-journal00:33:540
170039972,3cyclictest275-21systemd-journal21:58:360
17945260,0sleep20-21swapper/220:20:202
170179966,0cyclictest0-21swapper/323:55:273
170179966,0cyclictest0-21swapper/322:45:493
170179966,0cyclictest0-21swapper/322:33:323
170179966,0cyclictest0-21swapper/322:07:133
170179966,0cyclictest0-21swapper/300:27:353
170179966,0cyclictest0-21swapper/300:10:013
170179963,2cyclictest663-21runrttasks20:48:063
170179963,2cyclictest658-21snmpd20:17:183
170179963,2cyclictest5104-21sh21:28:143
170179963,2cyclictest3679-21rm23:13:043
170179963,2cyclictest32438-21sendmail_mailst19:40:193
170179963,2cyclictest30489-21ssh22:04:093
170179963,2cyclictest3044-11brltty19:14:303
170179963,2cyclictest30139-21sh00:36:403
170179963,2cyclictest29053-21tail23:30:153
170179963,2cyclictest275-21systemd-journal20:12:283
170179963,2cyclictest20111-21sshd21:37:043
170179963,2cyclictest17560-21ssh21:55:273
170179963,2cyclictest15858-21rm21:54:183
170179963,2cyclictest14542-21sh00:04:003
170179963,2cyclictest11046-21ssh22:56:303
170179963,1cyclictest0-21swapper/322:16:393
170179963,1cyclictest0-21swapper/300:15:523
170179962,3cyclictest674-21lldpd00:33:263
170179962,3cyclictest658-21snmpd23:51:303
170179962,3cyclictest658-21snmpd23:48:303
170179962,3cyclictest658-21snmpd23:25:103
170179962,3cyclictest658-21snmpd23:01:273
170179962,3cyclictest658-21snmpd22:41:373
170179962,3cyclictest658-21snmpd21:30:263
170179962,3cyclictest658-21snmpd20:34:013
170179962,3cyclictest658-21snmpd19:32:053
170179962,3cyclictest658-21snmpd19:28:533
170179962,3cyclictest5364-21df_inode21:05:153
170179962,3cyclictest504-21dbus-daemon21:45:003
170179962,3cyclictest31280-21expr20:50:153
170179962,3cyclictest24335-21smartctl20:35:163
170179962,3cyclictest22056-21cat22:20:173
170179962,3cyclictest20247-21grep20:25:203
170179962,3cyclictest0-21swapper/319:19:463
170179962,2cyclictest275-21systemd-journal21:45:243
170179961,4cyclictest15586-21apt-get21:15:113
170179960,6cyclictest0-21swapper/323:23:213
170179960,6cyclictest0-21swapper/323:17:063
170179960,6cyclictest0-21swapper/323:06:533
170179960,6cyclictest0-21swapper/320:40:203
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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