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2024-07-27 - 04:17
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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 Sat Jul 27, 2024 00:44:19)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
69252990,4chrt12352-21diskmemload22:42:553
69252990,4chrt12352-21diskmemload22:42:553
512899973,64cyclictest18764-21/usr/sbin/munin23:56:482
145302930,4chrt14529-21ssh22:02:070
512899923,61cyclictest23354-21apt-get23:11:432
5139999025,55cyclictest7241-21apt-get00:31:443
248522900,9sleep0161rcuc/021:26:330
5128998850,13cyclictest141rcu_preempt20:01:332
5128998850,13cyclictest141rcu_preempt20:01:332
5139998733,38cyclictest12352-21diskmemload21:07:013
5116998770,11cyclictest26980-21munin-plugin-st20:11:300
57462850,8sleep30-21swapper/323:35:023
5128998359,16cyclictest4257-21munin-plugin-st20:41:302
37862819,31sleep20-21swapper/219:01:562
512899803,53cyclictest20445-21ssh21:18:052
512899803,53cyclictest20445-21ssh21:18:052
512899792,50cyclictest30307-21runrttasks21:35:222
512899792,50cyclictest30307-21runrttasks21:35:222
5139997840,30cyclictest41-21ksoftirqd/319:16:533
5139997840,30cyclictest41-21ksoftirqd/319:16:533
512899785,45cyclictest0-21swapper/222:21:062
359727811,41sleep33598-21munin-node19:01:403
5139997737,8cyclictest141rcu_preempt23:17:363
494027711,37sleep14974-21munin-run19:06:301
5139997648,19cyclictest7522-21latency_hist20:51:323
5128997657,12cyclictest7716-21unixbench_singl23:37:052
5128997657,12cyclictest7716-21unixbench_singl23:37:052
512899763,66cyclictest23180-21grep21:22:252
512899752,48cyclictest10975-21ssh22:50:472
5139997438,16cyclictest141rcu_preempt21:13:353
512899743,42cyclictest21502-21users19:52:112
511699742,42cyclictest4536-21timerwakeupswit23:32:030
5116997410,39cyclictest12-21ksoftirqd/000:17:060
284822740,7sleep10-21swapper/121:31:551
284822740,7sleep10-21swapper/121:31:551
5128997355,11cyclictest20755-21/usr/sbin/munin23:06:452
512899733,59cyclictest29197-21fschecks_time22:26:512
512899733,53cyclictest416-21snmpd22:37:152
512899732,62cyclictest17694-21timerwakeupswit22:07:032
512899732,62cyclictest11511-21rm22:51:352
5123997351,13cyclictest14769-21cstates22:56:471
5123997350,13cyclictest9433-21fschecks_time19:16:521
5123997350,13cyclictest9433-21fschecks_time19:16:521
5139997254,10cyclictest5106-21cyclictest20:36:313
5139997224,24cyclictest141rcu_preempt19:12:093
512899723,62cyclictest31246-21ssh23:22:362
5128997229,34cyclictest0-21swapper/221:41:312
5139997121,28cyclictest141rcu_preempt21:02:083
5139997121,28cyclictest141rcu_preempt21:02:083
512899719,56cyclictest0-21swapper/200:07:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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