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2024-06-20 - 08:27
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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 Thu Jun 20, 2024 00:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2438421055,14sleep30-21swapper/319:04:433
2438421055,14sleep30-21swapper/319:04:433
2492321037,62sleep024936-21sed19:05:460
2492321037,62sleep024936-21sed19:05:460
1641121000,4chrt16412-21/usr/sbin/munin20:19:362
1641121000,4chrt16412-21/usr/sbin/munin20:19:362
25806999257,10cyclictest25905-21grep00:34:430
25806999257,10cyclictest25905-21grep00:34:430
25807998951,32cyclictest9185-21munin-plugin-st22:18:591
25807998951,32cyclictest9185-21munin-plugin-st22:18:591
2580799885,55cyclictest0-21swapper/100:28:081
2580799885,55cyclictest0-21swapper/100:28:081
25809998649,12cyclictest41-21ksoftirqd/300:14:143
25809998649,12cyclictest41-21ksoftirqd/300:14:143
25809998567,8cyclictest0-21swapper/322:30:093
25809998567,8cyclictest0-21swapper/322:30:093
2580799852,51cyclictest6647-21ssh21:19:461
2580799852,51cyclictest6647-21ssh21:19:461
25809998412,46cyclictest13765-21apt-get23:19:433
25809998412,46cyclictest13765-21apt-get23:19:433
2580699843,53cyclictest26342-21ssh23:40:140
25806998431,36cyclictest30913-21kworker/u8:122:55:200
2580999839,44cyclictest0-21swapper/322:55:163
2580899836,67cyclictest25936-21apt-get23:39:522
25809998250,22cyclictest337-21dbus-daemon23:18:593
25809998250,22cyclictest337-21dbus-daemon23:18:593
25809998249,27cyclictest41-21ksoftirqd/319:34:223
25809998238,22cyclictest141rcu_preempt22:24:293
2580799823,46cyclictest5599-21munin-run21:19:001
2580799823,46cyclictest5599-21munin-run21:19:001
2580799822,54cyclictest32068-21diskmemload23:21:091
2580799822,54cyclictest32068-21diskmemload23:21:091
2580799822,50cyclictest31634-21seq19:28:181
2580799822,50cyclictest31634-21seq19:28:181
25809998157,15cyclictest31601-21idleruntime-cro23:48:593
25809998157,15cyclictest31601-21idleruntime-cro23:48:593
25809998048,11cyclictest41-21ksoftirqd/300:23:103
25807998027,45cyclictest0-21swapper/123:09:021
25807998027,45cyclictest0-21swapper/123:09:021
25806997960,12cyclictest30359-21idleruntime-cro22:53:590
25806997960,12cyclictest30359-21idleruntime-cro22:53:590
25809997846,22cyclictest12144-21cut21:29:243
2580799781,47cyclictest11180-21ssh00:09:121
2520427812,39sleep125272-21grep19:05:591
2520427812,39sleep125272-21grep19:05:591
25809997748,13cyclictest41-21ksoftirqd/321:12:463
25809997740,12cyclictest141rcu_preempt22:39:373
25809997740,12cyclictest141rcu_preempt22:39:373
25809997726,13cyclictest0-21swapper/300:34:393
25809997726,13cyclictest0-21swapper/300:34:393
25808997752,15cyclictest416-21snmpd22:19:282
25808997752,15cyclictest416-21snmpd22:19:282
25808997744,22cyclictest17852-21ssh21:39:132
25806997757,14cyclictest28811-21munin-plugin-st20:58:590
25806997757,14cyclictest28811-21munin-plugin-st20:58:590
25809997654,15cyclictest21350-21cron22:38:593
25809997639,13cyclictest41-21ksoftirqd/319:39:193
25806997642,13cyclictest141rcu_preempt00:18:240
25806997642,13cyclictest141rcu_preempt00:18:240
25806997616,24cyclictest12-21ksoftirqd/021:29:260
25809997544,14cyclictest141rcu_preempt23:54:143
25809997544,14cyclictest141rcu_preempt23:54:143
25809997541,13cyclictest41-21ksoftirqd/300:24:503
25809997541,13cyclictest41-21ksoftirqd/300:24:503
25809997541,10cyclictest41-21ksoftirqd/322:47:273
25809997541,10cyclictest41-21ksoftirqd/322:47:273
2580999753,32cyclictest141rcu_preempt23:59:343
25808997524,20cyclictest13967-21apt-get00:14:082
25808997524,20cyclictest13967-21apt-get00:14:082
25807997538,31cyclictest0-21swapper/121:54:521
2580799752,48cyclictest400-21runrttasks23:31:061
2580799752,48cyclictest400-21runrttasks23:31:061
25808997459,9cyclictest25519-21latency_hist23:39:012
25808997425,18cyclictest14205-21apt-get20:14:162
25808997425,18cyclictest14205-21apt-get20:14:162
25807997455,12cyclictest11527-21cron21:29:001
2580799742,47cyclictest23110-21ssh22:40:311
2580799742,47cyclictest23110-21ssh22:40:311
25809997339,12cyclictest41-21ksoftirqd/319:49:343
25809997338,10cyclictest0-21swapper/323:36:563
2580799733,39cyclictest27661-21ssh23:41:261
25806997357,9cyclictest24851-21unixbench_singl21:49:430
25806997357,9cyclictest24851-21unixbench_singl21:49:430
25806997325,41cyclictest131ktimers/019:19:500
25809997240,9cyclictest41-21ksoftirqd/319:26:053
25809997240,9cyclictest41-21ksoftirqd/319:26:053
25809997237,13cyclictest41-21ksoftirqd/323:04:033
25809997237,13cyclictest41-21ksoftirqd/323:04:033
25807997236,28cyclictest0-21swapper/121:39:321
2580799723,58cyclictest29712-21apt-get21:59:111
2580799723,58cyclictest29712-21apt-get21:59:111
2580699727,51cyclictest22599-21apt-get20:40:060
2580699727,51cyclictest22599-21apt-get20:40:060
25806997243,9cyclictest141rcu_preempt21:14:260
25806997243,9cyclictest141rcu_preempt21:14:260
25809997124,24cyclictest0-21swapper/321:53:473
25809997124,24cyclictest0-21swapper/321:53:473
25809997123,26cyclictest141rcu_preempt22:13:283
25809997123,26cyclictest141rcu_preempt22:13:283
2580799712,62cyclictest23931-21ssh23:35:041
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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