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2026-09-05 - 13:35
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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 Sep 05, 2026 00:44:29)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3267721296,17sleep00-21swapper/019:08:420
456991166,87cyclictest13204-21kworker/u18:1+rpciod22:20:591
3276521168,78sleep132766-21cron19:09:531
44799114102,8cyclictest170-21jbd2/mmcblk2p2-822:20:090
456991056,82cyclictest7237-21kworker/u19:1+ext4-rsv-conversion21:15:161
4569910421,44cyclictest12365-21latency_hist19:44:521
4569910334,35cyclictest0-21swapper/122:35:161
1284621010,5sleep30-21swapper/323:50:223
447999863,28cyclictest439-21cyclictest21:19:000
464999535,54cyclictest20829-21fschecks_count21:30:132
464999535,54cyclictest20829-21fschecks_count21:30:132
456999575,13cyclictest18167-21cron00:00:121
464999443,42cyclictest0-21swapper/222:00:292
464999337,49cyclictest31078-21unixbench_singl21:45:282
464999337,49cyclictest31078-21unixbench_singl21:45:282
46499933,42cyclictest6633-21cpuspeed22:50:072
46499933,35cyclictest22194-21fschecks_time00:05:142
464999331,10cyclictest0-21swapper/219:55:282
46499924,34cyclictest343-21runrttasks21:59:562
46499924,34cyclictest343-21runrttasks21:59:562
46499924,34cyclictest18237-40mandb23:59:562
456999251,34cyclictest26333-21kworker/u18:2+flush-179:019:24:551
456999251,34cyclictest26333-21kworker/u18:2+flush-179:019:24:551
46499914,33cyclictest16029-21/usr/sbin/munin23:05:282
46499914,31cyclictest343-21runrttasks22:57:092
46499913,37cyclictest28890-21/usr/sbin/munin23:25:112
46499913,36cyclictest6799-21find19:25:252
464999122,12cyclictest0-21swapper/200:15:302
44799914,56cyclictest15-21ksoftirqd/020:50:070
46499904,40cyclictest3207-21unixbench_singl00:25:292
46499904,40cyclictest3207-21unixbench_singl00:25:292
46499904,37cyclictest20253-21grep23:10:282
464999034,49cyclictest0-21swapper/222:34:542
46499903,36cyclictest13452-21/usr/sbin/munin22:10:192
46499903,36cyclictest13452-21/usr/sbin/munin22:10:192
46499903,33cyclictest10158-21unixbench_singl23:45:292
46499903,33cyclictest10158-21unixbench_singl23:45:292
46499903,32cyclictest21693-21latency_hist00:04:552
464999031,9cyclictest0-21swapper/223:04:562
464999031,9cyclictest0-21swapper/223:04:562
456999053,30cyclictest3689-21systemd-run21:54:531
456999041,40cyclictest0-21swapper/123:24:551
447999057,13cyclictest181rcu_preempt21:27:390
44799903,65cyclictest18766-21apt-get00:00:080
46499895,35cyclictest15288-21latency_hist23:54:552
46499894,37cyclictest15568-21modprobe19:54:532
46499894,35cyclictest7674-21/usr/sbin/munin21:10:212
46499893,39cyclictest6077-21ssh00:30:252
46499893,37cyclictest3704-21grep19:16:232
46499893,36cyclictest5358-21unixbench_singl21:00:272
46499893,36cyclictest343-21runrttasks20:17:252
46499893,33cyclictest25052-21/usr/sbin/munin00:10:032
46499893,33cyclictest1-21systemd20:14:532
46499893,32cyclictest32718-21switchtime20:45:272
46499893,28cyclictest1773-21processes20:50:252
464998929,8cyclictest0-21swapper/221:39:232
464998928,11cyclictest0-21swapper/222:45:252
464998928,11cyclictest0-21swapper/222:45:252
46499892,36cyclictest835-21ntp_kernel_pll_22:40:202
456998951,31cyclictest4951-21latency_hist00:29:551
456998951,31cyclictest4951-21latency_hist00:29:551
45699893,49cyclictest0-21swapper/119:25:151
464998863,18cyclictest11267-21timerandwakeup22:05:282
46499884,33cyclictest7986-21fschecks_count19:30:132
46499884,32cyclictest30524-21grep22:35:272
46499884,30cyclictest19780-21switchtime20:05:262
46499884,30cyclictest19780-21switchtime20:05:262
464998837,43cyclictest0-21swapper/219:44:522
46499883,37cyclictest23274-21fschecks_count23:16:242
46499883,36cyclictest9587-21fschecks_count19:35:142
46499883,35cyclictest25744-21cut20:25:152
46499883,35cyclictest13547-21unixbench_multi19:45:322
46499883,31cyclictest5795-21latency_hist23:39:562
46499883,31cyclictest5795-21latency_hist23:39:562
46499883,30cyclictest29721-21grep20:35:292
46499883,30cyclictest29721-21grep20:35:292
46499883,30cyclictest28492-21apt20:34:532
46499882,38cyclictest32079-21cpu23:30:072
46499882,35cyclictest17235-21taskset21:24:552
46499882,34cyclictest23184-21/usr/sbin/munin22:25:242
46499882,34cyclictest23184-21/usr/sbin/munin22:25:242
46499882,33cyclictest17457-21/usr/sbin/munin20:00:122
46499882,33cyclictest17457-21/usr/sbin/munin20:00:122
456998844,37cyclictest0-21swapper/122:14:531
456998844,37cyclictest0-21swapper/122:14:531
456998842,39cyclictest0-21swapper/121:39:541
456998834,48cyclictest3378-21sh23:35:211
456998834,48cyclictest3378-21sh23:35:211
46499876,64cyclictest11355-21runrttasks21:15:442
46499874,32cyclictest5874-21modprobe23:39:562
46499873,37cyclictest9449-21unixbench_singl00:35:282
46499873,37cyclictest498-21latency_hist21:49:542
46499873,37cyclictest2405-21latency_hist19:14:572
46499873,37cyclictest2405-21latency_hist19:14:572
46499873,35cyclictest28639-21latency_hist23:24:542
46499872,36cyclictest30750-21sed20:40:172
456998730,31cyclictest0-21swapper/122:51:401
464998638,39cyclictest0-21swapper/200:20:172
464998636,42cyclictest0-21swapper/222:21:262
46499863,35cyclictest24591-21taskset20:20:252
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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