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2023-01-30 - 05:47

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 Mon Jan 30, 2023 00:45:14)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21069962272192,28sleep10-21swapper/119:07:311
21070172261220,27sleep00-21swapper/019:07:440
1591991070,3rtkit-daemon0-21swapper/019:51:040
1591991030,3rtkit-daemon0-21swapper/022:08:480
1591991010,3rtkit-daemon0-21swapper/023:49:560
1591991000,3rtkit-daemon0-21swapper/022:40:160
1591991000,3rtkit-daemon0-21swapper/020:41:210
159199990,3rtkit-daemon0-21swapper/022:25:580
159199980,3rtkit-daemon0-21swapper/021:11:520
159199970,3rtkit-daemon0-21swapper/022:02:530
159199960,3rtkit-daemon0-21swapper/021:00:000
159199960,3rtkit-daemon0-21swapper/019:27:010
159199960,3rtkit-daemon0-21swapper/000:25:580
159199940,3rtkit-daemon0-21swapper/021:20:090
159199940,3rtkit-daemon0-21swapper/021:20:090
159199940,3rtkit-daemon0-21swapper/000:15:360
159199940,3rtkit-daemon0-21swapper/000:15:360
159199930,3rtkit-daemon0-21swapper/019:35:080
159199930,3rtkit-daemon0-21swapper/000:14:540
159199910,3rtkit-daemon0-21swapper/022:56:260
159199900,3rtkit-daemon0-21swapper/022:21:030
159199900,3rtkit-daemon0-21swapper/021:01:310
159199890,3rtkit-daemon0-21swapper/023:06:560
159199880,3rtkit-daemon0-21swapper/022:15:330
159199870,3rtkit-daemon0-21swapper/023:57:310
159199860,24rtkit-daemon0-21swapper/121:37:180
159199850,3rtkit-daemon0-21swapper/023:02:430
159199830,4rtkit-daemon1590-21rtkit-daemon20:30:460
159199820,1rtkit-daemon1590-21rtkit-daemon21:28:570
159199800,3rtkit-daemon1590-21rtkit-daemon21:41:360
159199790,1rtkit-daemon1590-21rtkit-daemon23:44:430
159199790,1rtkit-daemon1590-21rtkit-daemon19:10:320
159199780,3rtkit-daemon0-21swapper/020:20:400
159199770,2rtkit-daemon0-21swapper/023:12:500
159199760,1rtkit-daemon1590-21rtkit-daemon23:34:190
159199750,17rtkit-daemon0-21swapper/121:46:350
159199740,4rtkit-daemon1590-21rtkit-daemon23:35:590
159199740,3rtkit-daemon0-21swapper/022:14:260
159199740,1rtkit-daemon1590-21rtkit-daemon21:05:360
159199740,16rtkit-daemon0-21swapper/121:50:570
159199730,1rtkit-daemon1590-21rtkit-daemon20:27:400
159199710,3rtkit-daemon1590-21rtkit-daemon23:37:091
159199710,3rtkit-daemon0-21swapper/019:16:050
159199710,22rtkit-daemon2109412-21munin-node20:00:250
21568542700,7sleep1141rcu_preempt21:10:181
159199690,3rtkit-daemon0-21swapper/019:30:351
159199670,4rtkit-daemon1590-21rtkit-daemon21:56:190
159199670,3rtkit-daemon0-21swapper/023:51:231
159199670,1rtkit-daemon1590-21rtkit-daemon20:13:170
159199660,4rtkit-daemon1590-21rtkit-daemon23:28:040
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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