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2024-07-16 - 08:16
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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 Mon Jul 15, 2024 12:44:16)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7403210211,53sleep07479-21unixbench_multi07:04:010
782829915,51sleep37858-21munin-run07:07:173
7990999543,45cyclictest0-21swapper/208:57:172
65802949,51sleep26601-21ls07:02:362
799099902,54cyclictest25204-21taskset07:55:222
7982999057,11cyclictest141rcu_preempt07:32:171
799099883,57cyclictest6917-21taskset09:50:502
799099883,57cyclictest6917-21taskset09:50:502
799099882,59cyclictest9394-21taskset07:11:002
7990998759,16cyclictest2137-21sh09:42:172
799099862,56cyclictest7998-21ssh11:56:162
799099842,55cyclictest10551-21ssh10:58:472
799099842,53cyclictest15536-21memory07:27:432
797399842,59cyclictest32344-21apt-get09:37:360
7973998262,13cyclictest16387-21unixbench_multi10:08:010
7990998139,35cyclictest1-21systemd09:25:012
7982998114,33cyclictest32344-21apt-get09:37:301
257022810,9sleep325686-21munin-run10:27:173
7990998060,13cyclictest30069-21sendmail11:37:162
799099803,50cyclictest17673-21ssh10:11:572
7973998046,9cyclictest141rcu_preempt08:57:350
799099793,48cyclictest26009-21irqstats07:57:432
7990997910,44cyclictest747-21apt-get11:42:342
799099782,47cyclictest5333-21ntp_states08:32:492
7982997843,13cyclictest25-21ksoftirqd/107:35:111
7982997830,22cyclictest25-21ksoftirqd/107:52:461
799099773,47cyclictest0-21swapper/209:20:022
7982997752,16cyclictest20455-21munin-plugin-st10:17:171
7996997648,9cyclictest141rcu_preempt10:54:483
7996997631,21cyclictest363-21in:imklog10:13:473
799099763,65cyclictest30562-21ssh10:36:112
7982997650,15cyclictest0-21swapper/111:32:171
7973997647,7cyclictest141rcu_preempt11:57:430
799099752,63cyclictest29065-21entropy08:07:402
799099752,63cyclictest24688-21cat12:27:192
799099752,63cyclictest24688-21cat12:27:192
7982997543,8cyclictest25-21ksoftirqd/110:24:031
7973997548,9cyclictest141rcu_preempt11:43:140
7973997538,14cyclictest141rcu_preempt07:47:510
7973997527,11cyclictest141rcu_preempt10:12:380
7996997459,9cyclictest3146-21munin-plugin-st11:47:163
799099744,62cyclictest8470-21wc08:42:422
799099743,63cyclictest4507-21grep11:47:582
799099742,62cyclictest6843-21/usr/sbin/munin08:37:432
7982997438,13cyclictest25-21ksoftirqd/109:42:441
7982997434,23cyclictest25-21ksoftirqd/112:16:301
7982997434,23cyclictest25-21ksoftirqd/112:16:301
7982997432,16cyclictest25-21ksoftirqd/111:27:061
7973997432,25cyclictest141rcu_preempt12:03:220
7973997432,25cyclictest141rcu_preempt12:03:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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