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2026-04-08 - 19:08
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Wed Apr 08, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
17865991183,31cyclictest24375-21grep10:49:110
17865991183,31cyclictest24375-21grep10:49:110
1746321096,16sleep20-21swapper/207:00:162
178659910639,11cyclictest0-21swapper/007:53:360
17865991043,31cyclictest24525-21timerwakeupswit07:20:110
17865991043,31cyclictest24525-21timerwakeupswit07:20:110
672421010,6sleep30-21swapper/311:14:223
672421010,6sleep30-21swapper/311:14:223
17880999947,12cyclictest181rcu_preempt07:48:472
1786599983,24cyclictest7104-21grep11:14:320
169362989,63sleep116935-21ntp_states06:59:131
17880999455,13cyclictest181rcu_preempt11:44:032
17880999455,13cyclictest181rcu_preempt11:44:032
17880999443,11cyclictest181rcu_preempt11:53:492
17880999443,11cyclictest181rcu_preempt11:53:492
17872999377,9cyclictest10890-21munin-run09:33:351
17865999166,17cyclictest17858-21cyclictest07:53:520
17865999048,35cyclictest0-21swapper/009:14:110
17880998962,21cyclictest9572-21unixbench_singl10:24:132
1788899889,66cyclictest26644-21chrt10:53:543
17880998847,10cyclictest181rcu_preempt08:29:082
17872998872,10cyclictest26703-21ssh10:54:041
17872998869,13cyclictest15056-21munin-plugin-st08:33:351
17865998768,13cyclictest23632-21fschecks_time08:58:570
17865998755,10cyclictest181rcu_preempt09:03:510
17880998657,14cyclictest9540-21ssh09:29:502
17880998549,8cyclictest181rcu_preempt07:58:372
17880998454,9cyclictest17809-21ssh09:44:092
17880998452,22cyclictest608-21sh11:04:042
17880998452,22cyclictest608-21sh11:04:042
17880998449,9cyclictest3187-21ssh12:02:082
17880998439,12cyclictest181rcu_preempt10:29:082
17880998439,12cyclictest181rcu_preempt10:29:082
1787299843,46cyclictest31-21ksoftirqd/111:11:091
1787299843,46cyclictest31-21ksoftirqd/111:11:091
1787299842,37cyclictest31-21ksoftirqd/112:08:311
17865998460,15cyclictest10781-21ssh11:20:240
185462830,9sleep00-21swapper/008:43:450
17880998351,14cyclictest3350-21ssh09:19:462
17872998369,9cyclictest9717-21ssh12:13:361
17872998369,9cyclictest9717-21ssh12:13:361
1787299833,44cyclictest31-21ksoftirqd/112:15:061
17872998310,48cyclictest31-21ksoftirqd/110:21:021
17865998364,13cyclictest24757-21diskmemload10:39:070
17865998364,13cyclictest24757-21diskmemload10:39:070
17865998350,26cyclictest21116-21ssh11:38:380
17865998350,26cyclictest21116-21ssh11:38:380
1639628311,48sleep016398-21apt-get06:58:470
1787299826,41cyclictest31-21ksoftirqd/107:20:091
1787299826,41cyclictest31-21ksoftirqd/107:20:091
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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