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2023-06-07 - 17:21

x86 Intel Celeron N3350 @1100 MHz, Linux 5.10.90-rt60 (Profile)

Latency plot of system in rack #c, slot #4
Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Command line: cyclictest -l100000000 -m -Sp99 -i200 -h400 -q
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 rackcslot4.osadl.org (updated Wed Jun 07, 2023 12:45:11)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27644012329287,27sleep00-21swapper/007:08:170
27642002327276,27sleep10-21swapper/107:06:081
276468399124109,4cyclictest2875655-21kworker/u8:111:48:561
2764675991080,1cyclictest0-21swapper/011:48:570
159199810,4rtkit-daemon1590-21rtkit-daemon10:35:430
159199790,4rtkit-daemon1590-21rtkit-daemon08:45:240
159199780,4rtkit-daemon1590-21rtkit-daemon11:44:160
159199780,4rtkit-daemon1590-21rtkit-daemon09:34:490
159199770,4rtkit-daemon1590-21rtkit-daemon10:19:050
159199760,4rtkit-daemon1590-21rtkit-daemon09:17:240
159199760,3rtkit-daemon1590-21rtkit-daemon10:29:400
159199750,4rtkit-daemon1590-21rtkit-daemon08:09:340
159199740,4rtkit-daemon1590-21rtkit-daemon11:18:270
159199730,4rtkit-daemon1590-21rtkit-daemon12:14:230
159199720,4rtkit-daemon1590-21rtkit-daemon12:29:420
159199720,4rtkit-daemon1590-21rtkit-daemon11:55:020
159199720,4rtkit-daemon1590-21rtkit-daemon10:52:300
159199720,4rtkit-daemon1590-21rtkit-daemon10:48:570
159199720,4rtkit-daemon1590-21rtkit-daemon10:48:570
159199720,3rtkit-daemon1590-21rtkit-daemon12:39:400
159199690,4rtkit-daemon1590-21rtkit-daemon12:21:310
159199680,3rtkit-daemon0-21swapper/009:43:221
159199670,4rtkit-daemon1590-21rtkit-daemon08:15:530
2764675996624,25cyclictest2811782-21gltestperf09:05:200
159199660,3rtkit-daemon0-21swapper/012:31:301
159199640,4rtkit-daemon1590-21rtkit-daemon10:42:520
159199640,4rtkit-daemon1590-21rtkit-daemon09:51:500
159199640,3rtkit-daemon0-21swapper/010:14:311
2764675996314,24cyclictest2845498-21gltestperf10:30:250
2764675996311,29cyclictest2813128-21diskmemload12:18:170
159199630,4rtkit-daemon1590-21rtkit-daemon09:43:560
159199630,3rtkit-daemon0-21swapper/009:17:011
159199620,3rtkit-daemon0-21swapper/011:43:131
159199610,4rtkit-daemon1590-21rtkit-daemon11:33:150
159199610,3rtkit-daemon0-21swapper/012:35:561
159199610,3rtkit-daemon0-21swapper/011:58:321
159199610,3rtkit-daemon0-21swapper/011:39:331
159199610,3rtkit-daemon0-21swapper/011:10:541
276467599607,22cyclictest2811147-2150-motd-news09:04:550
276467599601,28cyclictest2837139-21apt-get10:10:190
159199600,3rtkit-daemon0-21swapper/012:15:061
159199600,3rtkit-daemon0-21swapper/011:07:211
159199600,3rtkit-daemon0-21swapper/011:03:121
159199600,3rtkit-daemon0-21swapper/010:16:161
159199600,3rtkit-daemon0-21swapper/009:28:541
159199600,3rtkit-daemon0-21swapper/008:56:491
159199600,3rtkit-daemon0-21swapper/008:28:091
2764683995918,16cyclictest2782895-21turbostat.cron07:59:551
2764683995915,18cyclictest2834232-21sed10:00:381
276467599596,3cyclictest141rcu_preempt07:55:300
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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