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2026-07-15 - 04:34
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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 Wed Jul 15, 2026 00:44:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
20962302276,17sleep20-21swapper/219:07:292
22512277246,21sleep10-21swapper/119:09:281
20812258226,21sleep00-21swapper/019:07:180
327182251223,19sleep30-21swapper/319:05:083
213122560,0sleep20-21swapper/222:26:062
50712550,0sleep00-21swapper/022:35:480
109282540,0sleep30-21swapper/321:40:213
270072530,0sleep00-21swapper/000:07:250
217972530,0sleep00-21swapper/022:26:270
233962220,0sleep30-21swapper/323:06:263
159092200,0sleep30-21swapper/322:03:433
103042160,0sleep10-21swapper/119:25:141
139262150,0sleep20-21swapper/222:02:102
12402150,0sleep10-21swapper/122:34:131
326742140,0sleep00-21swapper/023:12:150
213652140,0sleep00-21swapper/000:23:510
241699108,1cyclictest22-21ksoftirqd/122:20:021
30114290,0sleep10-21swapper/100:29:001
29408290,1sleep129411-21munin-run23:50:001
19359290,0sleep30-21swapper/323:43:433
24279984,3cyclictest275-21systemd-journal00:14:323
24169981,1cyclictest141rcu_preempt20:30:121
24129984,3cyclictest275-21systemd-journal00:25:260
14698280,0sleep20-21swapper/223:20:392
13434280,0sleep20-21swapper/223:00:202
8959270,0sleep10-21swapper/100:15:441
5708270,0sleep30-21swapper/323:55:113
32069270,0sleep20-21swapper/223:31:202
24279975,2cyclictest34-21ksoftirqd/320:50:013
24279974,2cyclictest275-21systemd-journal22:27:243
24279973,3cyclictest275-21systemd-journal23:24:293
24279973,3cyclictest275-21systemd-journal21:55:013
24279973,3cyclictest275-21systemd-journal20:24:553
24279973,2cyclictest275-21systemd-journal19:20:013
24279972,2cyclictest32122-21ssh21:34:173
24209976,1cyclictest28-21ksoftirqd/221:50:012
24209973,3cyclictest658-21snmpd23:55:192
24209973,3cyclictest560-21gdbus00:30:062
24209973,1cyclictest0-21swapper/221:26:062
24169976,1cyclictest22-21ksoftirqd/120:10:011
24169974,2cyclictest504-21dbus-daemon21:17:011
24169973,3cyclictest658-21snmpd21:48:361
24169973,3cyclictest658-21snmpd00:33:591
24169973,3cyclictest504-21dbus-daemon23:00:001
24169973,3cyclictest504-21dbus-daemon21:35:141
24169973,3cyclictest29982-21apt-get20:10:131
24129974,2cyclictest3997-21cron20:25:000
24129973,3cyclictest275-21systemd-journal23:40:000
24129973,3cyclictest11330-21diskstats20:40:140
24129971,3cyclictest9340-21munin-run22:00:020
24129970,7cyclictest0-21swapper/022:33:360
23066270,0sleep00-21swapper/022:46:530
18120273,2sleep3275-21systemd-journal00:02:013
24279966,0cyclictest0-21swapper/321:36:083
24279963,2cyclictest5541-21ssh22:55:373
24279963,2cyclictest4881-21ssh23:35:113
24279963,2cyclictest4031-21rm22:15:283
24279963,2cyclictest2461-21memory21:55:163
24279963,2cyclictest24099-21memory19:55:173
24279963,2cyclictest16624-21cron21:25:003
24279963,2cyclictest15908-21wc00:20:153
24279963,2cyclictest15618-21expr20:50:133
24279963,2cyclictest10240-21ssh22:20:073
24279963,1cyclictest0-21swapper/322:51:043
24279963,1cyclictest0-21swapper/322:32:453
24279963,1cyclictest0-21swapper/322:11:203
24279962,3cyclictest658-21snmpd23:29:303
24279962,3cyclictest658-21snmpd22:39:153
24279962,3cyclictest658-21snmpd21:49:513
24279962,3cyclictest658-21snmpd21:25:023
24279962,3cyclictest658-21snmpd21:16:113
24279962,3cyclictest658-21snmpd20:17:243
24279962,3cyclictest658-21snmpd20:05:033
24279962,3cyclictest658-21snmpd20:03:153
24279962,3cyclictest658-21snmpd19:35:053
24279962,3cyclictest658-21snmpd19:28:503
24279962,3cyclictest658-21snmpd00:26:493
24279962,3cyclictest658-21snmpd00:16:133
24279962,3cyclictest504-21dbus-daemon21:15:003
24279962,3cyclictest504-21dbus-daemon19:20:213
24279962,3cyclictest30974-21ntpq23:50:173
24279962,3cyclictest29860-21sensors_temp23:10:213
24279962,3cyclictest275-21systemd-journal21:01:043
24279962,3cyclictest18276-21grep22:05:153
24279962,3cyclictest16948-21expr19:40:123
24279962,1cyclictest0-21swapper/300:06:333
24279961,4cyclictest30469-21grep20:10:153
24279961,3cyclictest275-21systemd-journal23:34:303
24279960,6cyclictest0-21swapper/323:17:393
24279960,6cyclictest0-21swapper/323:01:103
24279960,6cyclictest0-21swapper/300:32:143
24279960,5cyclictest6861-21df_inode20:30:133
24279960,5cyclictest3216-21hddtemp_smartct19:10:153
24279960,5cyclictest12739-21grep19:30:133
24279960,0cyclictest0-21swapper/322:41:423
24279960,0cyclictest0-21swapper/300:35:153
24209966,0cyclictest0-21swapper/221:35:322
24209966,0cyclictest0-21swapper/200:17:412
24209966,0cyclictest0-21swapper/200:07:282
24209963,2cyclictest8723-21ssh23:36:552
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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