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2026-08-11 - 13:52
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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 rack3slot6.osadl.org (updated Tue Aug 11, 2026 12:45:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2747821270,4chrt0-21swapper/111:05:191
74769911650,20cyclictest14-21ksoftirqd/012:10:140
74769911453,15cyclictest14-21ksoftirqd/008:30:130
74769910835,17cyclictest0-21swapper/011:40:120
74769910715,36cyclictest0-21swapper/008:25:150
74769910423,22cyclictest0-21swapper/008:45:130
74769910332,19cyclictest0-21swapper/008:05:130
728729826,30sleep10-21swapper/107:09:271
7476999664,26cyclictest14-21ksoftirqd/010:15:130
7476999568,13cyclictest14-21ksoftirqd/010:25:140
707029422,26sleep00-21swapper/007:07:380
7476999215,37cyclictest0-21swapper/009:45:160
7476998660,15cyclictest14-21ksoftirqd/010:00:150
748099845,22cyclictest26331-21apt-get08:00:131
7476998354,19cyclictest0-21swapper/007:55:160
748099818,19cyclictest18467-21apt-get09:10:121
211302810,6chrt21131-21/usr/sbin/munin07:45:220
748099808,19cyclictest7557-21apt-get07:10:131
7476998053,17cyclictest14-21ksoftirqd/010:55:130
284212800,5chrt28420-21/usr/sbin/munin08:05:221
748099796,23cyclictest21996-21apt-get10:50:141
748099786,23cyclictest20507-21apt-get09:15:231
7476997857,13cyclictest14-21ksoftirqd/007:25:150
7476997857,13cyclictest14-21ksoftirqd/007:25:150
748099777,22cyclictest2674-21apt-get08:25:161
748099776,24cyclictest18518-21apt-get10:40:131
7480997719,51cyclictest0-21swapper/112:05:241
7476997753,16cyclictest14-21ksoftirqd/012:05:170
7476997748,19cyclictest14-21ksoftirqd/010:35:150
7476997739,32cyclictest14-21ksoftirqd/010:50:220
748099767,20cyclictest7960-21apt-get08:40:121
748099767,20cyclictest7960-21apt-get08:40:121
748099766,19cyclictest24014-21apt-get09:25:121
748099765,23cyclictest11487-21apt-get10:20:131
7480997622,16cyclictest30218-21cat09:40:371
7480997620,10cyclictest3039-21needreboot09:55:291
7480997619,18cyclictest457-21dbus-daemon07:40:051
7476997649,17cyclictest14-21ksoftirqd/009:25:130
7476997648,18cyclictest14-21ksoftirqd/010:05:220
7476997647,19cyclictest14-21ksoftirqd/011:45:140
748099757,19cyclictest29860-21apt-get08:10:141
748099757,19cyclictest25756-21apt-get09:30:141
748099756,23cyclictest32526-21apt-get11:20:121
748099756,21cyclictest5626-21apt-get11:35:131
748099756,19cyclictest4154-21apt-get10:00:151
748099755,24cyclictest20786-21apt-get07:45:141
748099755,22cyclictest6188-21apt-get10:05:221
748099755,19cyclictest24569-21apt-get07:55:171
7476997547,18cyclictest14-21ksoftirqd/007:40:240
748099745,27cyclictest0-21swapper/112:28:441
748099745,20cyclictest2142-21apt-get11:25:161
748099743,19cyclictest4238-21/usr/sbin/munin11:30:221
748099743,19cyclictest4238-21/usr/sbin/munin11:30:221
7476997447,18cyclictest14-21ksoftirqd/008:10:120
283742740,6sleep014-21ksoftirqd/011:05:380
748099736,22cyclictest31345-21apt-get09:45:161
7480997316,16cyclictest503-21snmpd09:03:411
7480997314,17cyclictest24093-21cat10:55:231
7476997347,14cyclictest0-21swapper/009:05:120
748099725,17cyclictest17944-21apt-get12:10:141
748099723,31cyclictest14799-21latency_hist09:00:011
748099723,31cyclictest14799-21latency_hist09:00:011
7480997220,16cyclictest16619-21cron07:35:001
7480997220,13cyclictest25801-1kworker/u9:008:18:141
7480997218,16cyclictest13654-21df_inode07:25:211
7480997218,16cyclictest13654-21df_inode07:25:211
748099712,29cyclictest20255-21/usr/sbin/munin10:45:351
7480997122,18cyclictest17409-21ntp_states09:05:311
7480997118,12cyclictest0-21swapper/112:30:201
7480997117,16cyclictest503-21snmpd10:18:551
7480997117,14cyclictest10528-21sshd11:47:461
7480997116,17cyclictest25694-21cpu11:00:181
7480997017,17cyclictest17401-21/usr/sbin/munin07:35:261
7480997016,17cyclictest4568-21tail08:30:171
7480997016,15cyclictest8363-21wc11:40:351
7480997015,16cyclictest11458-21cat11:50:251
7476997044,16cyclictest0-21swapper/012:15:150
748099697,22cyclictest30766-21apt-get11:15:141
748099696,21cyclictest22522-21apt-get07:50:131
748099696,20cyclictest9816-21apt-get07:15:131
748099696,19cyclictest19681-21apt-get12:15:151
748099695,20cyclictest26669-21apt-get12:35:121
7480996917,15cyclictest12488-21cat07:20:341
7476996941,18cyclictest0-21swapper/012:25:140
7476996938,17cyclictest0-21swapper/010:45:150
748099686,22cyclictest11440-21apt-get08:50:151
748099685,22cyclictest27499-21apt-get09:35:181
748099684,31cyclictest0-21swapper/108:45:221
748099683,20cyclictest15154-21taskset12:00:321
7480996817,13cyclictest14155-21sort10:25:361
7480996816,12cyclictest0-21swapper/110:35:371
7476996839,17cyclictest14-21ksoftirqd/008:15:150
748099677,21cyclictest6145-21apt-get08:35:141
7476996741,18cyclictest0-21swapper/011:00:130
7476996738,17cyclictest0-21swapper/007:15:140
7476996736,17cyclictest0-21swapper/010:30:150
748099666,22cyclictest14969-21apt-get10:30:131
748099665,24cyclictest22273-21apt-get09:20:121
7480996618,20cyclictest12797-21aten2.4_r3power11:55:191
7476996640,16cyclictest0-21swapper/009:35:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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