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2022-05-25 - 08:37

x86 Intel Atom E3845 @1915 MHz, Linux 4.19.37-rt20 (Profile)

Latency plot of system in rack #b, slot #6
Data to construct the above plot have been generated using the RT test utility cyclictest.
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 rackbslot6.osadl.org (updated Fri May 20, 2022 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1014621660,5sleep02797099cyclictest02:20:220
2555521600,3sleep12797599cyclictest23:50:461
1349621560,4sleep22798299cyclictest01:49:442
91191980,4ptp4l401ktimersoftd/321:12:143
91191710,1ptp4l401ktimersoftd/300:26:393
126252640,5sleep12797599cyclictest02:21:231
52832630,3sleep32798699cyclictest01:08:383
277102614,45sleep00-21swapper/021:13:090
275172600,4sleep12797599cyclictest02:38:261
187032600,2sleep20-21swapper/222:00:372
181302600,5sleep32798699cyclictest00:49:143
91191590,1ptp4l401ktimersoftd/302:29:313
91191570,1ptp4l401ktimersoftd/323:37:433
91191570,1ptp4l401ktimersoftd/301:31:373
91191560,1ptp4l401ktimersoftd/302:21:303
91191560,1ptp4l401ktimersoftd/301:24:473
91191550,1ptp4l401ktimersoftd/301:01:223
154552550,2sleep10-21swapper/123:00:471
154552550,2sleep10-21swapper/123:00:471
276592534,38sleep10-21swapper/121:12:291
25952530,4sleep32798699cyclictest22:35:353
27970995140,6cyclictest9-21ksoftirqd/001:25:330
91191480,2ptp4l1715-21kworker/3:000:57:173
27975994816,9cyclictest25-21ksoftirqd/100:40:211
27975994816,9cyclictest25-21ksoftirqd/100:40:211
91191470,2ptp4l1715-21kworker/3:000:53:463
2797599475,8cyclictest25-21ksoftirqd/121:15:401
91191460,2ptp4l1715-21kworker/3:000:06:133
91191460,1ptp4l401ktimersoftd/323:24:253
2797599466,9cyclictest25-21ksoftirqd/122:25:391
2797599460,42cyclictest241ktimersoftd/123:10:191
2797599455,10cyclictest25-21ksoftirqd/123:21:111
91191440,1ptp4l401ktimersoftd/300:32:143
2797599446,9cyclictest25-21ksoftirqd/101:06:481
2797599437,9cyclictest25-21ksoftirqd/122:00:361
2797599437,9cyclictest25-21ksoftirqd/121:55:471
2797599437,9cyclictest25-21ksoftirqd/101:00:401
2797599435,9cyclictest25-21ksoftirqd/100:45:391
2797599434,7cyclictest25-21ksoftirqd/123:15:341
2797599434,7cyclictest25-21ksoftirqd/101:45:371
2797599434,7cyclictest25-21ksoftirqd/101:10:381
2797599432,6cyclictest25-21ksoftirqd/101:55:421
27975994318,10cyclictest25-21ksoftirqd/122:05:301
2797599427,9cyclictest25-21ksoftirqd/121:40:351
2797599427,8cyclictest5536-21latency_hist02:15:231
2797599427,8cyclictest5536-21latency_hist02:15:231
2797599426,9cyclictest25-21ksoftirqd/123:35:331
2797599426,9cyclictest25-21ksoftirqd/123:25:481
2797599426,9cyclictest25-21ksoftirqd/122:55:361
2797599426,8cyclictest25-21ksoftirqd/123:30:381
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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