You are here: Home / Projects / OSADL QA Farm Real-time / Latency plots / 
2023-01-30 - 05:25

x86 Intel Atom Z530 @1600 MHz, Linux 3.12.61-rt81 (Profile)

Latency plot of system in rack #1, slot #8
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 rack1slot8.osadl.org (updated Mon Jan 30, 2023 00:43:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
296542953934,12sleep10-21swapper/119:09:021
2979099924819,78cyclictest0-21swapper/020:45:220
2979199803692,78cyclictest29643-21strings20:45:231
296802673649,17sleep00-21swapper/019:09:190
29790995374,13cyclictest0-21swapper/019:12:300
2979199486444,28cyclictest0-21swapper/123:45:571
2979099459391,62cyclictest0-21swapper/023:29:140
2979099448358,79cyclictest740-21sh23:45:580
2979199390357,27cyclictest0-21swapper/119:12:311
2979199338283,31cyclictest0-21swapper/123:29:141
211999930,4rtkit-daemon2118-21rtkit-daemon23:18:501
29790999253,26cyclictest0-21swapper/019:49:130
211999920,4rtkit-daemon2118-21rtkit-daemon20:09:511
211999920,4rtkit-daemon2118-21rtkit-daemon20:02:421
211999920,4rtkit-daemon2118-21rtkit-daemon00:13:211
211999910,4rtkit-daemon2118-21rtkit-daemon23:04:551
211999910,4rtkit-daemon2118-21rtkit-daemon20:19:461
211999910,4rtkit-daemon2118-21rtkit-daemon20:11:221
211999880,4rtkit-daemon2118-21rtkit-daemon23:41:261
211999880,4rtkit-daemon2118-21rtkit-daemon22:02:481
211999880,4rtkit-daemon2118-21rtkit-daemon21:12:131
211999880,4rtkit-daemon2118-21rtkit-daemon19:38:411
211999820,3rtkit-daemon2118-21rtkit-daemon20:15:220
211999810,5rtkit-daemon2118-21rtkit-daemon21:39:381
211999810,5rtkit-daemon18416-21ssh23:21:001
211999810,4rtkit-daemon2118-21rtkit-daemon19:37:160
29790998051,22cyclictest0-21swapper/021:55:300
29790998045,28cyclictest0-21swapper/023:00:360
211999800,5rtkit-daemon2118-21rtkit-daemon23:11:401
211999800,4rtkit-daemon2118-21rtkit-daemon23:07:550
211999800,4rtkit-daemon2118-21rtkit-daemon22:20:140
211999800,4rtkit-daemon2118-21rtkit-daemon21:07:460
211999790,5rtkit-daemon2118-21rtkit-daemon21:10:480
211999790,4rtkit-daemon2118-21rtkit-daemon23:59:111
211999790,4rtkit-daemon2118-21rtkit-daemon23:59:101
211999790,4rtkit-daemon2118-21rtkit-daemon23:52:011
211999790,4rtkit-daemon2118-21rtkit-daemon23:41:460
211999790,4rtkit-daemon2118-21rtkit-daemon22:58:551
211999790,4rtkit-daemon2118-21rtkit-daemon22:48:001
211999790,4rtkit-daemon2118-21rtkit-daemon21:00:221
211999790,4rtkit-daemon2118-21rtkit-daemon19:47:361
211999790,3rtkit-daemon2118-21rtkit-daemon20:32:420
211999780,5rtkit-daemon2118-21rtkit-daemon22:07:191
211999780,5rtkit-daemon2118-21rtkit-daemon00:08:460
211999780,4rtkit-daemon2118-21rtkit-daemon23:34:111
211999780,4rtkit-daemon2118-21rtkit-daemon22:42:591
211999780,4rtkit-daemon2118-21rtkit-daemon22:42:000
211999780,4rtkit-daemon2118-21rtkit-daemon22:38:190
211999780,4rtkit-daemon2118-21rtkit-daemon22:37:141
211999780,4rtkit-daemon2118-21rtkit-daemon22:23:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional