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2026-05-06 - 07:08
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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 rackbslot7.osadl.org (updated Wed May 06, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
23855991153,99cyclictest27490-21apt-get23:37:102
23855991112,37cyclictest18478-21sh23:22:242
23855991103,32cyclictest32483-21taskset21:57:542
23855991103,32cyclictest32483-21taskset21:57:542
238559910168,26cyclictest15887-21sshd00:11:572
23855991012,31cyclictest27594-21taskset20:49:502
23855991003,29cyclictest15923-21diskmemload21:29:372
23855991003,29cyclictest15923-21diskmemload21:29:372
2385599992,31cyclictest31008-21diskmemload23:19:052
2385599982,31cyclictest11933-21ssh00:04:582
23855999814,75cyclictest11093-21apt-get21:22:042
2385599962,21cyclictest352-21runrttasks22:38:092
2385599962,21cyclictest352-21runrttasks22:38:092
2385599952,29cyclictest352-21runrttasks19:54:382
23831999573,15cyclictest9978-21fschecks_time19:57:080
23855999363,20cyclictest25832-21latency_hist21:46:482
23855999271,14cyclictest297-21systemd-logind19:06:462
2385599913,7cyclictest0-21swapper/222:32:002
23831999172,13cyclictest277-21dbus-daemon21:21:450
227432918,58sleep122821-21/usr/sbin/munin18:57:211
23855999053,30cyclictest0-21swapper/200:27:112
2385599903,34cyclictest15303-21switchtime20:12:202
23847999070,13cyclictest0-21swapper/121:52:091
23847999069,12cyclictest0-21swapper/120:16:481
23855998970,11cyclictest0-21swapper/223:16:452
23855998970,11cyclictest0-21swapper/223:16:452
2385599893,39cyclictest352-21runrttasks00:16:582
2385599893,39cyclictest352-21runrttasks00:16:582
2385599893,38cyclictest30531-21/usr/sbin/munin22:47:232
2385599892,9cyclictest0-21swapper/200:07:012
23847998968,11cyclictest0-21swapper/120:36:481
23831998970,9cyclictest0-21swapper/020:18:150
2385599882,25cyclictest509-21ssh23:46:232
23847998872,12cyclictest0-21swapper/120:52:571
23831998844,13cyclictest181rcu_preempt19:02:200
2385599872,38cyclictest8990-21latency_hist23:06:482
23847998771,10cyclictest9766-21kworker/u17:2-xprtiod22:16:361
23847998768,12cyclictest0-21swapper/120:41:481
23847998761,20cyclictest20551-21sh22:32:011
23847998759,19cyclictest25899-21sshd20:46:451
23831998772,9cyclictest0-21swapper/021:27:090
23831998772,9cyclictest0-21swapper/021:27:090
23831998771,9cyclictest0-21swapper/000:02:010
236582876,63sleep00-21swapper/019:01:230
2385599863,39cyclictest11296-21idleruntime-cro22:16:452
2385599863,38cyclictest3633-21/usr/sbin/munin19:37:092
2385599863,37cyclictest21862-21/usr/sbin/munin20:32:172
2385599862,39cyclictest9613-21/usr/sbin/munin23:07:112
2385599862,27cyclictest31887-21/usr/sbin/munin19:22:232
2385599862,27cyclictest31887-21/usr/sbin/munin19:22:232
2385599862,26cyclictest6347-21ssh23:55:582
23847998670,9cyclictest0-21swapper/100:30:511
23831998668,10cyclictest0-21swapper/023:27:040
23831998665,11cyclictest0-21swapper/019:22:070
23831998665,11cyclictest0-21swapper/019:22:070
23831998659,7cyclictest181rcu_preempt21:07:470
23831998658,14cyclictest181rcu_preempt23:16:380
23831998658,14cyclictest181rcu_preempt23:16:380
23855998564,14cyclictest26922-21kworker/u19:023:36:442
23855998564,14cyclictest26922-21kworker/u19:023:36:442
2385599854,74cyclictest0-21swapper/221:11:572
23855998541,36cyclictest0-21swapper/219:17:172
23855998541,36cyclictest0-21swapper/219:17:172
2385599853,7cyclictest0-21swapper/222:16:582
2385599853,7cyclictest0-21swapper/222:16:582
2385599853,66cyclictest0-21swapper/219:57:012
2385599853,37cyclictest10576-21gpgv21:21:452
2385599853,36cyclictest32751-21/usr/sbin/munin22:52:082
2385599852,38cyclictest27423-21taskset21:48:282
2385599852,38cyclictest27423-21taskset21:48:282
2385599852,38cyclictest24668-21seq20:42:032
2385599852,36cyclictest967-21apt-get23:46:552
2385599852,36cyclictest967-21apt-get23:46:552
23847998565,13cyclictest0-21swapper/120:21:471
23847998564,8cyclictest181rcu_preempt22:43:151
23847998542,32cyclictest9064-21grep19:52:211
23831998563,11cyclictest0-21swapper/021:37:070
23831998563,11cyclictest0-21swapper/021:37:070
23831998562,11cyclictest181rcu_preempt23:02:110
23831998560,7cyclictest181rcu_preempt23:46:430
2385599844,35cyclictest19897-21grep20:27:072
2385599843,38cyclictest28942-21apt-get21:51:572
2385599843,33cyclictest18333-21/usr/sbin/munin22:27:222
2385599843,33cyclictest18333-21/usr/sbin/munin22:27:222
2385599842,36cyclictest22450-21sh00:22:172
2385599842,34cyclictest23081-21fschecks_count20:37:072
23847998468,9cyclictest0-21swapper/120:27:191
23847998467,8cyclictest0-21swapper/120:07:171
23847998465,13cyclictest1751-21cpuspeed19:32:001
2385599834,32cyclictest3592-21sh21:09:052
2385599833,37cyclictest6918-21latency19:47:112
2385599832,33cyclictest32366-21ssh21:02:222
2385599832,33cyclictest26463-21acpi22:41:562
23847998349,18cyclictest181rcu_preempt22:52:021
23847998345,11cyclictest181rcu_preempt00:06:571
23831998346,10cyclictest181rcu_preempt21:02:000
23831998343,15cyclictest181rcu_preempt22:00:160
23831998343,15cyclictest181rcu_preempt22:00:160
2385599823,37cyclictest22000-21/usr/sbin/munin23:27:192
2385599823,30cyclictest16839-21/usr/sbin/munin20:18:062
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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