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2026-05-09 - 14:10
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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 Sat May 09, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3688991283,105cyclictest19530-21apt-get19:46:591
3688991096,77cyclictest7236-21apt-get19:11:501
245021069,69sleep02167-21/usr/sbin/munin18:57:000
36809910456,36cyclictest27162-21apt-get22:21:490
36809910456,36cyclictest27162-21apt-get22:21:490
345021036,15sleep20-21swapper/219:00:452
36809910227,44cyclictest11242-21ssh22:48:270
3230321020,6sleep30-21swapper/323:23:423
3230321020,6sleep30-21swapper/323:23:423
36809910125,25cyclictest7841-21ssh22:42:180
36809910125,25cyclictest7841-21ssh22:42:180
3680999957,32cyclictest5888-21apt-get19:06:470
3680999554,36cyclictest0-21swapper/000:01:430
3680999528,41cyclictest0-21swapper/021:48:520
295929510,57sleep13048-21timerwakeupswit18:57:181
3680999468,17cyclictest3671-21cyclictest23:51:340
3680999464,20cyclictest30142-21apt-get22:26:480
3680999435,22cyclictest31564-21seq21:35:070
3697999347,38cyclictest0-21swapper/221:12:082
3680999360,26cyclictest0-21swapper/019:51:480
3680999333,22cyclictest13657-21diskstats23:47:220
3680999333,22cyclictest13657-21diskstats23:47:220
3697999242,42cyclictest0-21swapper/222:01:542
3688999266,15cyclictest19428-21latency_hist19:46:371
3680999235,22cyclictest2052-21seq22:32:530
3680999164,19cyclictest30668-21apt-get23:21:450
3680999164,19cyclictest30668-21apt-get23:21:450
3680999137,27cyclictest13961-21ssh21:06:180
3680999134,19cyclictest18692-21seq19:42:220
3680999126,40cyclictest0-21swapper/000:09:510
3697999047,33cyclictest0-21swapper/219:41:362
3688998968,12cyclictest300-21rs:main1
3680998937,45cyclictest0-21swapper/020:21:440
3680998937,45cyclictest0-21swapper/020:21:440
368099893,66cyclictest7236-21apt-get19:11:480
3680998922,32cyclictest0-21swapper/000:14:030
3697998846,35cyclictest24810-21kworker/u17:1-xprtiod00:16:492
3697998846,35cyclictest24810-21kworker/u17:1-xprtiod00:16:492
369799883,40cyclictest14374-21/usr/sbin/munin21:06:442
369799883,40cyclictest14374-21/usr/sbin/munin21:06:442
369799882,38cyclictest12509-21ssh21:02:122
3680998833,19cyclictest26349-21seq23:13:460
3680998829,26cyclictest0-21swapper/021:10:390
3680998829,26cyclictest0-21swapper/021:10:390
3697998768,13cyclictest11073-21diskmemload00:27:092
3697998745,34cyclictest0-21swapper/219:21:502
3697998739,42cyclictest9458-21idleruntime-cro20:56:332
3697998738,42cyclictest23732-21idleruntime21:21:562
369799873,6cyclictest0-21swapper/220:11:492
369799873,6cyclictest0-21swapper/220:11:492
3680998769,10cyclictest8108-21apt-get20:51:490
3680998751,25cyclictest26381-21apt-get21:26:430
3697998654,25cyclictest3813-21timerandwakeup21:42:082
3697998642,36cyclictest0-21swapper/220:27:062
3697998639,39cyclictest20851-21munin-plugin-st22:11:352
3697998639,39cyclictest20851-21munin-plugin-st22:11:352
369799863,7cyclictest0-21swapper/222:36:452
369799862,6cyclictest0-21swapper/220:06:452
369799862,6cyclictest0-21swapper/220:06:452
369799862,39cyclictest4076-21latency_hist23:31:362
3680998645,36cyclictest0-21swapper/023:36:450
3680998645,36cyclictest0-21swapper/023:36:450
3680998636,40cyclictest23944-21/usr/sbin/munin21:22:010
3680998634,41cyclictest18558-21ssh21:12:180
369799854,7cyclictest0-21swapper/223:36:452
369799854,7cyclictest0-21swapper/223:36:452
369799853,8cyclictest0-21swapper/221:46:462
369799853,7cyclictest0-21swapper/221:26:472
369799853,38cyclictest1-21systemd23:16:342
369799853,36cyclictest5271-21grep19:06:362
369799853,35cyclictest23305-21/usr/sbin/munin19:57:012
369799853,31cyclictest23096-21/usr/sbin/munin00:02:052
3680998551,20cyclictest32461-21apt-get20:26:430
3680998547,31cyclictest0-21swapper/020:11:490
3680998547,31cyclictest0-21swapper/020:11:490
3680998536,17cyclictest28890-21seq23:17:310
3680998535,22cyclictest10903-21ssh21:53:540
3680998523,28cyclictest0-21swapper/022:07:070
3680998523,28cyclictest0-21swapper/022:07:070
3697998467,11cyclictest19245-21apt-key19:46:362
369799844,8cyclictest0-21swapper/219:51:482
369799843,34cyclictest29187-21/usr/sbin/munin00:12:072
369799843,30cyclictest277-21dbus-daemon22:46:332
369799843,30cyclictest277-21dbus-daemon22:46:332
369799842,37cyclictest21362-21ssh22:11:512
369799842,32cyclictest16438-21ssh23:51:472
3680998443,28cyclictest0-21swapper/022:51:480
3680998443,28cyclictest0-21swapper/022:51:480
3680998432,19cyclictest15601-21seq19:34:000
3680998427,23cyclictest22115-21/usr/sbin/munin00:01:340
3680998421,30cyclictest0-21swapper/022:39:240
3697998340,37cyclictest0-21swapper/200:06:502
369799833,7cyclictest0-21swapper/222:21:482
369799833,7cyclictest0-21swapper/222:21:482
369799833,37cyclictest30645-21/usr/sbin/munin23:21:522
369799833,37cyclictest30645-21/usr/sbin/munin23:21:522
369799833,32cyclictest9947-21/usr/sbin/munin22:46:542
369799832,39cyclictest9145-21runrttasks19:16:342
3688998360,14cyclictest28964-21kworker/u17:2-rpciod21:09:161
3688998360,14cyclictest28964-21kworker/u17:2-rpciod21:09:161
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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