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2026-04-13 - 01:43
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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 Sun Apr 12, 2026 12:44:25)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
224632321294,18sleep10-21swapper/107:05:341
225642271241,19sleep20-21swapper/207:06:512
226532263232,21sleep30-21swapper/307:08:013
227912261236,16sleep00-21swapper/007:09:310
308222630,0sleep10-21swapper/107:25:121
176182610,0sleep00-21swapper/010:50:130
136042610,0sleep10-21swapper/111:45:551
221322600,0sleep10-21swapper/110:33:241
63692580,0sleep20-21swapper/211:22:102
243652580,0sleep30-21swapper/309:55:183
89112180,0sleep20-21swapper/209:45:442
270952170,0sleep00-21swapper/010:35:510
250122170,0sleep20-21swapper/209:35:542
182672170,0sleep20-21swapper/211:10:132
184962150,0sleep30-21swapper/309:32:153
217212130,0sleep10-21swapper/109:34:451
225112120,0sleep00-21swapper/011:12:190
116872110,0sleep30-21swapper/312:24:493
116872110,0sleep30-21swapper/312:24:493
2294499109,1cyclictest28-21ksoftirqd/211:00:002
229449990,5cyclictest275-21systemd-journal08:30:012
229379994,3cyclictest275-21systemd-journal10:14:190
229489980,1cyclictest7131-21sed08:55:163
229449980,7cyclictest387-21sh12:37:022
229429980,7cyclictest31285-21ssh12:16:181
229429980,7cyclictest26848-21ssh11:54:461
229379983,3cyclictest275-21systemd-journal11:35:130
229379983,3cyclictest275-21systemd-journal09:30:000
229379980,7cyclictest0-21swapper/010:55:120
17456280,0sleep20-21swapper/209:31:262
28505270,0sleep00-21swapper/009:38:360
229489974,2cyclictest658-21snmpd12:00:563
229489974,2cyclictest275-21systemd-journal10:04:493
229489973,3cyclictest275-21systemd-journal08:40:013
229489972,3cyclictest275-21systemd-journal10:30:013
229489970,6cyclictest12810-21diskmemload09:45:043
229449974,2cyclictest275-21systemd-journal10:41:032
229449973,3cyclictest658-21snmpd07:14:532
229449973,3cyclictest504-21dbus-daemon08:10:192
229449973,3cyclictest275-21systemd-journal08:48:192
229449973,2cyclictest658-21snmpd11:56:292
229449972,4cyclictest0-21swapper/210:30:202
229449972,3cyclictest275-21systemd-journal09:10:042
229449971,3cyclictest18235-21munin-run11:30:002
229429974,2cyclictest6367-21/usr/sbin/munin08:55:201
229429974,2cyclictest275-21systemd-journal09:54:471
229429974,2cyclictest26711-21cut07:15:141
229429973,3cyclictest504-21dbus-daemon12:40:001
229379974,2cyclictest504-21dbus-daemon11:40:450
229379973,3cyclictest658-21snmpd08:44:020
229379973,3cyclictest10492-21sensors_temp10:45:170
229379972,3cyclictest8358-21cron09:00:000
229379971,4cyclictest20187-21dump-pmu-power12:30:000
229379970,4cyclictest3687-21turbostat12:20:000
229379970,4cyclictest27173-21awk11:55:000
229379970,4cyclictest25115-21awk07:15:010
15951270,0sleep20-21swapper/209:50:172
7248260,0sleep30-21swapper/310:05:113
4958260,0sleep10-21swapper/110:03:371
229489966,0cyclictest0-21swapper/311:49:053
229489966,0cyclictest0-21swapper/311:40:183
229489966,0cyclictest0-21swapper/310:46:103
229489963,2cyclictest5921-21taskset08:52:463
229489963,2cyclictest4270-21ssh10:22:243
229489963,2cyclictest4270-21ssh10:22:243
229489963,2cyclictest4204-21ssh11:00:593
229489963,2cyclictest31211-21ssh11:37:163
229489963,2cyclictest30810-21sshd12:35:263
229489963,2cyclictest27620-21ssh10:55:273
229489963,2cyclictest275-21systemd-journal12:16:163
229489963,2cyclictest275-21systemd-journal11:55:143
229489963,2cyclictest25063-21grep10:15:193
229489963,2cyclictest24661-21ssh11:53:053
229489963,2cyclictest2086-21ssh11:20:023
229489963,2cyclictest19913-21ssh10:50:543
229489963,2cyclictest10273-21chrt09:01:243
229489963,2cyclictest0-21swapper/307:15:193
229489962,3cyclictest658-21snmpd12:26:453
229489962,3cyclictest658-21snmpd11:33:343
229489962,3cyclictest658-21snmpd09:38:183
229489962,3cyclictest658-21snmpd09:15:393
229489962,3cyclictest658-21snmpd08:05:343
229489962,3cyclictest658-21snmpd08:05:013
229489962,3cyclictest658-21snmpd07:51:543
229489962,3cyclictest658-21snmpd07:21:393
229489962,3cyclictest658-21snmpd07:10:143
229489962,3cyclictest5131-21expr07:40:123
229489962,3cyclictest27530-21ntp_kernel_err11:15:173
229489962,3cyclictest14885-21awk09:50:113
229489962,3cyclictest12328-21grep12:05:143
229489962,3cyclictest10743-21expr11:25:113
229489962,1cyclictest0-21swapper/311:11:103
229489962,1cyclictest0-21swapper/310:10:403
229489962,1cyclictest0-21swapper/309:20:413
229489962,1cyclictest0-21swapper/309:11:383
229489961,4cyclictest658-21snmpd09:25:213
229489961,3cyclictest275-21systemd-journal08:10:183
229489960,6cyclictest0-21swapper/312:31:403
229489960,6cyclictest0-21swapper/310:43:103
229489960,0cyclictest0-21swapper/312:11:563
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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